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1

Solar panel parallel mounting configuration  

NASA Technical Reports Server (NTRS)

A spacecraft includes a plurality of solar panels interconnected with a power coupler and an electrically operated device to provide power to the device when the solar cells are insolated. The solar panels are subject to bending distortion when entering or leaving eclipse. Spacecraft attitude disturbances are reduced by mounting each of the solar panels to an elongated boom made from a material with a low coefficient of thermal expansion, so that the bending of one panel is not communicated to the next. The boom may be insulated to reduce its bending during changes in insolation. A particularly advantageous embodiment mounts each panel to the boom with a single mounting, which may be a hinge. The single mounting prevents transfer of bending moments from the panel to the boom.

Mutschler, Jr., Edward Charles (Inventor)

1998-01-01

2

ISAL 35mm NIKON camera mounted on aft flight deck onorbit station panel  

NASA Technical Reports Server (NTRS)

On aft flight deck, Investigation of Space Transportation System (STS) Atmospheric Luminosities (ISAL) bracket-mounted 35mm NIKON camera is attached to onorbit station control panel A8U. Camera lens is pointed out aft viewing window W10 and surrounded by window shade.

1983-01-01

3

Test-Anchored Vibration Response Predictions for an Acoustically Energized Curved Orthogrid Panel with Mounted Components  

NASA Technical Reports Server (NTRS)

A rich body of vibroacoustic test data was recently generated at Marshall Space Flight Center for a curved orthogrid panel typical of launch vehicle skin structures. Several test article configurations were produced by adding component equipment of differing weights to the flight-like vehicle panel. The test data were used to anchor computational predictions of a variety of spatially distributed responses including acceleration, strain and component interface force. Transfer functions relating the responses to the input pressure field were generated from finite element based modal solutions and test-derived damping estimates. A diffuse acoustic field model was employed to describe the assumed correlation of phased input sound pressures across the energized panel. This application demonstrates the ability to quickly and accurately predict a variety of responses to acoustically energized skin panels with mounted components. Favorable comparisons between the measured and predicted responses were established. The validated models were used to examine vibration response sensitivities to relevant modeling parameters such as pressure patch density, mesh density, weight of the mounted component and model form. Convergence metrics include spectral densities and cumulative root-mean squared (RMS) functions for acceleration, velocity, displacement, strain and interface force. Minimum frequencies for response convergence were established as well as recommendations for modeling techniques, particularly in the early stages of a component design when accurate structural vibration requirements are needed relatively quickly. The results were compared with long-established guidelines for modeling accuracy of component-loaded panels. A theoretical basis for the Response/Pressure Transfer Function (RPTF) approach provides insight into trends observed in the response predictions and confirmed in the test data. The software modules developed for the RPTF method can be easily adapted for quick replacement of the diffuse acoustic field with other pressure field models; for example a turbulent boundary layer (TBL) model suitable for vehicle ascent. Wind tunnel tests have been proposed to anchor the predictions and provide new insight into modeling approaches for this type of environment. Finally, component vibration environments for design were developed from the measured and predicted responses and compared with those derived from traditional techniques such as Barrett scaling methods for unloaded and component-loaded panels.

Frady, Gregory P.; Duvall, Lowery D.; Fulcher, Clay W. G.; Laverde, Bruce T.; Hunt, Ronald A.

2011-01-01

4

Analytical results and sample locality map of stream-sediment, heavy-mineral-concentrate, and rock samples from the Little Rockies, Mount Pennell, and Mount Hillers Wilderness Study Areas (UT-050-247,248,249), Garfield County, Utah  

SciTech Connect

This report presents the results of a geochemical and mineralogical survey of the Little Rockies, Mount Pennell, and Mount Hillers Wilderness Study Areas (UT-050-247,248,249), Garfield County, Utah. The Little Rockies, Mount Pennell, and Mount Hillers Wilderness Study Areas comprise about 350 mi/sup 2/ (910 km/sup 2/) in Garfield County, Utah. The study areas occupy the southern portion of the Henry Mountains and includes Mount Pennell, Mount Hillers, and Mount Ellsworth. The areas consist of a series of diorite porphyry laccoliths and their satellite bodies, all of Eocene age, which intrude the 8000 ft (2500 m) thick Henry Basin sediments which range in age from Permian to Holocene. Only Triassic and younger rocks are exposed in the areas. Samples were collected at 153 sites. At nearly all of those sites, both a stream-sediment sample and a heavy-mineral-concentrate sample were collected. Where suitable outcrop was available, rock samples were collected. In addition to the spectrographic analysis all heavy-mineral-concentrate samples were mineralogically analyzed. Minerals reported include zircon (round and euhedral), sphene, rutile, anatase, barite, apatite, scheelite, epidote, pyrite, pyroxene, arsenopyrite, amphibole, and rock fragments.

Detra, D.E.; Erickson, M.S.; Kemp, W.M. III; Willson, W.R.

1984-01-01

5

Photovoltaic module mounting system  

DOEpatents

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J.; Mittan, Margaret Birmingham; Seery, Martin N; Holland, Rodney H

2012-09-18

6

Photovoltaic module mounting system  

DOEpatents

A solar array mounting system having unique installation, load distribution, and grounding features, and which is adaptable for mounting solar panels having no external frame. The solar array mounting system includes flexible, pedestal-style feet and structural links connected in a grid formation on the mounting surface. The photovoltaic modules are secured in place via the use of attachment clamps that grip the edge of the typically glass substrate. The panel mounting clamps are then held in place by tilt brackets and/or mid-link brackets that provide fixation for the clamps and align the solar panels at a tilt to the horizontal mounting surface. The tilt brackets are held in place atop the flexible feet and connected link members thus creating a complete mounting structure.

Miros, Robert H. J. (Fairfax, CA); Mittan, Margaret Birmingham (Oakland, CA); Seery, Martin N. (San Rafael, CA); Holland, Rodney H. (Novato, CA)

2012-04-17

7

A hybrid simulated method for analyzing the optical efficiency of a head-mounted display with a quasi-crystal OLED panel.  

PubMed

Organic light emitting diodes (OLEDs) with a quasi-crystal (QC) structure are analyzed and applied in a head-mounted display (HMD) system in this study. We adopt a hybrid simulated method to evaluate the light extraction efficiency (LEE) and far-field pattern in the air, and study the relationship between them. The simulation results show that OLEDs implanted with the QC structure can provide a collimated far-field pattern to increase the brightness. Using this 10-fold QC arrangement the maxima LEE of the OLEDs can be increased by 1.20 times. Compared with conventional OLEDs, the viewing angle of the OLED panel decreases from 120 degrees to 26 degrees with an improvement in the optical efficiency of the HMD system by 2.66 times. Moreover, the normalized on-axis intensity in the pupil of the eyepiece can be enlarged up to 3.95 times which suggests that the OLED panel can save 74.68% energy while achieving the same on-axis intensity as conventional OLEDs. PMID:24922267

Chang, Kao-Der; Li, Chang-Yi; Pan, Jui-Wen; Cheng, Kuei-Yuan

2014-03-10

8

Integrated radiotherapy imaging system (IRIS): design considerations of tumour tracking with linac gantry-mounted diagnostic x-ray systems with flat-panel detectors  

NASA Astrophysics Data System (ADS)

The design of an integrated radiotherapy imaging system (IRIS), consisting of gantry mounted diagnostic (kV) x-ray tubes and fast read-out flat-panel amorphous-silicon detectors, has been studied. The system is meant to be capable of three main functions: radiographs for three-dimensional (3D) patient set-up, cone-beam CT and real-time tumour/marker tracking. The goal of the current study is to determine whether one source/panel pair is sufficient for real-time tumour/marker tracking and, if two are needed, the optimal position of each relative to other components and the isocentre. A single gantry-mounted source/imager pair is certainly capable of the first two of the three functions listed above and may also be useful for the third, if combined with prior knowledge of the target's trajectory. This would be necessary because only motion in two dimensions is visible with a single imager/source system. However, with previously collected information about the trajectory, the third coordinate may be derived from the other two with sufficient accuracy to facilitate tracking. This deduction of the third coordinate can only be made if the 3D tumour/marker trajectory is consistent from fraction to fraction. The feasibility of tumour tracking with one source/imager pair has been theoretically examined here using measured lung marker trajectory data for seven patients from multiple treatment fractions. The patients' selection criteria include minimum mean amplitudes of the tumour motions greater than 1 cm peak-to-peak. The marker trajectory for each patient was modelled using the first fraction data. Then for the rest of the data, marker positions were derived from the imager projections at various gantry angles and compared with the measured tumour positions. Our results show that, due to the three dimensionality and irregular trajectory characteristics of tumour motion, on a fraction-to-fraction basis, a 'monoscopic' system (single source/imager) is inadequate for consistent real-time tumour tracking, even with prior knowledge. We found that, among the seven patients studied with peak-to-peak marker motion greater than 1 cm, five cases have mean localization errors greater than 2 mm and two have mean errors greater than 3 mm. Because of this uncertainty associated with a monoscopic system, two source/imager pairs are necessary for robust 3D target localization. Dual orthogonal x-ray source/imager pairs mounted on the linac gantry are chosen for the IRIS. We further studied the placement of the x-ray sources/panel based on the geometric specifications of the Varian 21EX Clinac. The best configuration minimizes the localization error while maintaining a large field of view and avoiding collisions with the floor/ceiling or couch.

Berbeco, Ross I.; Jiang, Steve B.; Sharp, Gregory C.; Chen, George T. Y.; Mostafavi, Hassan; Shirato, Hiroki

2004-01-01

9

Human health and ecological toxicity potentials due to heavy metal content in waste electronic devices with flat panel displays.  

PubMed

Display devices such as cathode-ray tube (CRT) televisions and computer monitors are known to contain toxic substances and have consequently been banned from disposal in landfills in the State of California and elsewhere. New types of flat panel display (FPD) devices, millions of which are now purchased each year, also contain toxic substances, but have not previously been systematically studied and compared to assess the potential impact that could result from their ultimate disposal. In the current work, the focus is on the evaluation of end-of-life toxicity potential from the heavy metal content in select FPD devices with the intent to inform material selection and design-for-environment (DfE) decisions. Specifically, the metals antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, molybdenum, nickel, selenium, silver, vanadium, and zinc in plasma TVs, LCD (liquid crystal display) TVs, LCD computer monitors and laptop computers are considered. The human health and ecotoxicity potentials are evaluated through a life cycle assessment perspective by combining data on the respective heavy metal contents, the characterization factors in the U.S. EPA Tool for the Reduction and Assessment of Chemical and other environmental Impacts (TRACI), and a pathway and impact model. Principal contributors to the toxicity potentials are lead, arsenic, copper, and mercury. Although the heavy metal content in newer flat panel display devices creates less human health toxicity potential than that in CRTs, for ecological toxicity, the new devices are worse, especially because of the mercury in LCD TVs and the copper in plasma TVs. PMID:20056318

Lim, Seong-Rin; Schoenung, Julie M

2010-05-15

10

A comparative study on the effectiveness of piezoelectric patches for active composite panels with surface-mounted and embedded sensors and actuators  

Microsoft Academic Search

This study focuses on the effectiveness of the piezoelectric patches either surface-mounted or embedded for different composite laminate thicknesses. Primarily, two finite element models (FEMs) are considered for this study. The first FEM considers beams with varying thicknesses and non-collocated surface-mounted piezoelectric patches as sensor and actuator. Typical results are shown for four and eight layers graphite\\/epoxy composite laminates. The

Richard Russ; Mehrdad N. Ghasemi-Nejhad

2003-01-01

11

Piezoelectric performance effectiveness for active composite panels with surface-mounted and embedded sensors and actuators using direct constant voltage scheme  

Microsoft Academic Search

This work utilizes a Direct Constant Voltage (CV) Scheme as a versatile tool to study piezoelectric actuator performance effectiveness either surface-mounted or embedded. To achieve this goal calculated control Constant Voltage is employed for active vibration suppression. This paper introduces a closed form formula that replaces Design Charts for a faster and easier way to calculate actuator voltage required for

Richard Russ; Mehrdad N. Ghasemi-Nejhad

2004-01-01

12

A comparative study on the effectiveness of piezoelectric patches for active composite panels with surface-mounted and embedded sensors and actuators  

NASA Astrophysics Data System (ADS)

This study focuses on the effectiveness of the piezoelectric patches either surface-mounted or embedded for different composite laminate thicknesses. Primarily, two finite element models (FEMs) are considered for this study. The first FEM considers beams with varying thicknesses and non-collocated surface-mounted piezoelectric patches as sensor and actuator. Typical results are shown for four and eight layers graphite/epoxy composite laminates. The second FEM deals with embedded non-collocated piezoelectric patches as sensor and actuator for beams with varying thicknesses. For the embedded case one extra layer is needed to cover the piezoelectric patch and one extra cut-out layer to fill the area around the piezoelectric patch. Therefore, a composite beam for the embedded case in comparison to the surface-mounted case has always four extra constraint layers. Typical results, for these two cases, are compared for the beams with the same number of inner layers (i.e. four and eight). A surface-mounted ACX piezoelectric patch acts as a shaker in both FEMs. Numerical and experimental results from modal and harmonic analyses were compared and excellent comparisons were achieved. Cross-examination between these two FEMs determined the following. 1) The effectiveness of piezoelectric patches acting as an actuator with respect to the laminate thicknesses and the actuator distance from the beam neutral axis for both cases. 2) The influence of the constraint layers on the performance of the embedded piezoelectric patches.

Russ, Richard; Ghasemi-Nejhad, Mehrdad N.

2003-08-01

13

Piezoelectric performance effectiveness for active composite panels with surface-mounted and embedded sensors and actuators using direct constant voltage scheme  

NASA Astrophysics Data System (ADS)

This work utilizes a Direct Constant Voltage (CV) Scheme as a versatile tool to study piezoelectric actuator performance effectiveness either surface-mounted or embedded. To achieve this goal calculated control Constant Voltage is employed for active vibration suppression. This paper introduces a closed form formula that replaces Design Charts for a faster and easier way to calculate actuator voltage required for active vibration suppression. To perform a comprehensive study, three finite element models (FEMs) are developed. The first FEM considers non-collocated surface-mounted piezoelectric patches as sensor and actuator for beams with varying thicknesses. The second FEM deals with embedded non-collocated piezoelectric patches as sensor and actuator for beams with varying thicknesses and constant number of constraint layers. For this embedded case one extra layer is needed to cover the piezoelectric patch and one extra cut-out layer to fill the area around the piezoelectric patch compared to the surface-mounted. The third FEM focuses on beams having constant thicknesses with variable number of constraint layers and non-collocated embedded piezoelectric patches. A surface-mounted ACX piezoelectric patch acts as a shaker is all three FEMs. Numerical and experimental results were compared and excellent comparisons were obtained. The Direct Constant Voltage Scheme can offer useful information into the actuator performance effectiveness in terms of: 1) the piezoelectric actuator performance effectiveness with respect to the laminate thicknesses and actuator distance from the beam neutral axis either surface-mounted or embedded, and 2) the influence of the constant and variable number of constraint layers on the embedded piezoelectric effectiveness for beams with variable and constant thicknesses.

Russ, Richard; Ghasemi-Nejhad, Mehrdad N.

2004-07-01

14

Sharing the rivers: Balancing the needs of people and fish against the backdrop of heavy sediment loads downstream from Mount Rainier, Washington  

NASA Astrophysics Data System (ADS)

Despite heavy sediment loads, large winter floods, and floodplain development, the rivers draining Mount Rainier, a 4,392-m glaciated stratovolcano within 85 km of sea level at Puget Sound, Washington, support important populations of anadromous salmonids, including Chinook salmon and steelhead trout, both listed as threatened under the Endangered Species Act. Aggressive river-management approaches of the early 20th century, such as bank armoring and gravel dredging, are being replaced by more ecologically sensitive approaches including setback levees. However, ongoing aggradation rates of up to 8 cm/yr in lowland reaches present acute challenges for resource managers tasked with ensuring flood protection without deleterious impacts to aquatic ecology. Using historical sediment-load data and a recent reservoir survey of sediment accumulation, rivers draining Mount Rainer were found to carry total sediment yields of 350 to 2,000 tonnes/km2/yr, notably larger than sediment yields of 50 to 200 tonnes/km2/yr typical for other Cascade Range rivers. An estimated 70 to 94% of the total sediment load in lowland reaches originates from the volcano. Looking toward the future, transport-capacity analyses and sediment-transport modeling suggest that large increases in bedload and associated aggradation will result from modest increases in rainfall and runoff that are predicted under future climate conditions. If large sediment loads and associated aggradation continue, creative solutions and long-term management strategies are required to protect people and structures in the floodplain downstream of Mount Rainier while preserving aquatic ecosystems.

Magirl, C. S.; Czuba, J. A.; Czuba, C. R.; Curran, C. A.

2012-12-01

15

A large-scale mutant panel in wheat developed using heavy-ion beam mutagenesis and its application to genetic research  

NASA Astrophysics Data System (ADS)

Mutation analysis is a powerful tool for studying gene function. Heavy-ion beam mutagenesis is a comparatively new approach to inducing mutations in plants and is particularly efficient because of its high linear energy transfer (LET). High LET radiation induces a higher rate of DNA double-strand breaks than other mutagenic methods. Over the last 12 years, we have constructed a large-scale mutant panel in diploid einkorn wheat (Triticum monococcum) using heavy-ion beam mutagenesis. Einkorn wheat seeds were exposed to a heavy-ion beam and then sown in the field. Selfed seeds from each spike of M1 plants were used to generate M2 lines. Every year, we obtained approximately 1000 M2 lines and eventually developed a mutant panel with 10,000 M2 lines in total. This mutant panel is being systematically screened for mutations affecting reproductive growth, and especially for flowering-time mutants. To date, we have identified several flowering-time mutants of great interest: non-flowering mutants (mvp: maintained vegetative phase), late-flowering mutants, and early-flowering mutants. These novel mutations will be of value for investigations of the genetic mechanism of flowering in wheat.

Murai, Koji; Nishiura, Aiko; Kazama, Yusuke; Abe, Tomoko

2013-11-01

16

Mirror mount  

DOEpatents

A mirror mount (10) is provided that allows free pitch, yaw and roll motion of the mirror (28) while keeping the location of a point (56) on the surface of the mirror (28) fixed in the rest frame of reference of the mount (10). Yaw movement is provided by two yaw cylinders (30,32) that are bearing (52) mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell (42) that is air bearing (72,74) mounted to move between a clamp (60) and an upper pedestal bearing (44). The centers of curvature of the spherical surfaces of the shell (42) lie upon the point (56). Pitch motion and roll motion are separately and independently imparted to mirror (28) by a pair of pitch paddles (34) and a pair of roll paddles (36) that are independently and separately moved by control rods (76,80) driven by motors (78,82).

Humpal, Harold H. (San Ramon, CA)

1987-01-01

17

Mirror mount  

DOEpatents

A mirror mount is provided that allows free pitch, yaw and roll motion of the mirror while keeping the location of a point on the surface of the mirror fixed in the rest frame of reference of the mount. Yaw movement is provided by two yaw cylinders that are bearing mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell that is air bearing mounted to move between a clamp and an upper pedestal bearing. The centers of curvature of the spherical surfaces of the shell lie upon the point. Pitch motion and roll motion are separately and independently imparted to mirror by a pair of pitch paddles and a pair of roll paddles that are independently and separately moved by control rods driven by motors. 5 figs.

Humpal, H.H.

1987-11-10

18

Mirror mount  

DOEpatents

A mirror mount is provided that allows free pitch, yaw and roll motion of the mirror while keeping the location of a point on the surface of the mirror fixed in the rest frame of reference of the mount. Yaw movement is provided by two yaw cylinders that are bearing mounted to provide rotation. Pitch and roll motion is provided by a spherically annular shell that is air bearing mounted to move between a clamp and an upper pedestal bearing. The centers of curvature of the spherical surfaces of the shell lie upon the point. Pitch motion and roll motion are separately and independently imparted to mirror by a pair of pitch paddles and a pair of roll paddles that are independently and separately moved by control rods driven by motors.

Humpal, H.H.

1986-03-21

19

Mount Sinai  

Cancer.gov

Evaluation of HCC Response to Systemic Therapy with Quantitative MRIBachir Taouli (Bachir.taouli@mountsinai.org)U01CA172320Mount Sinai School of Medicine The incidence of hepatocellular carcinoma (HCC) has recently increased in the United States. HCC

20

Mirror mount  

DOEpatents

A unique lens or mirror mount having adjustable constraints at two key locations to allow for "X" and "Y" tilts of the mirror only. The device uses two pair of flexures of a type such that the pivots of the mirror gimble are rigidly fixed in all planes allowing the device to have zero stacking tolerance and zero wear over time.

Kuklo, Thomas C. (Oakdale, CA); Bender, Donald A. (Dublin, CA)

1994-01-01

21

Mirror mount  

DOEpatents

A unique lens or mirror mount having adjustable constraints at two key locations to allow for ''X'' and ''Y'' tilts of the mirror only is disclosed. The device uses two pair of flexures of a type such that the pivots of the mirror gimble are rigidly fixed in all planes allowing the device to have zero stacking tolerance and zero wear over time. 4 figs.

Kuklo, T.C.; Bender, D.A.

1994-10-04

22

Telescope mounting  

NASA Astrophysics Data System (ADS)

A mounting consisting of two revolving sections of a spherical shell is considered for the large European solar telescope. The lower section rotates about a vertical axis, and the upper section revolves on a circular bearing on the lower part. This concept allows for a well balanced and compact design. It may permit a domeless design, leading to substantial weight reduction pointing and tracking are easy, computerized, and robust. However, the telescope tube and its optical system rotate with respect to the plane of the direction of gravity. Tracking very close to the horizon and near zenith is precluded by acceleration strains on drives and bearings, although for solar observations this is not a serious drawback. The design is susceptible to wind induced vibrations. It is therefore of interest mainly in combination with an adequate active optical image stabilization scheme.

1982-04-01

23

Graphite Composite Panel Polishing Fixture  

NASA Technical Reports Server (NTRS)

The use of high-strength, lightweight composites for the fixture is the novel feature of this innovation. The main advantage is the light weight and high stiffness-to-mass ratio relative to aluminum. Meter-class optics require support during the grinding/polishing process with large tools. The use of aluminum as a polishing fixture is standard, with pitch providing a compliant layer to allow support without deformation. Unfortunately, with meter-scale optics, a meter-scale fixture weighs over 120 lb (.55 kg) and may distort the optics being fabricated by loading the mirror and/or tool used in fabrication. The use of composite structures that are lightweight yet stiff allows standard techniques to be used while providing for a decrease in fixture weight by almost 70 percent. Mounts classically used to support large mirrors during fabrication are especially heavy and difficult to handle. The mount must be especially stiff to avoid deformation during the optical fabrication process, where a very large and heavy lap often can distort the mount and optic being fabricated. If the optic is placed on top of the lapping tool, the weight of the optic and the fixture can distort the lap. Fixtures to support the mirror during fabrication are often very large plates of aluminum, often 2 in. (.5 cm) or more in thickness and weight upwards of 150 lb (68 kg). With the addition of a backing material such as pitch and the mirror itself, the assembly can often weigh over 250 lb (.113 kg) for a meter-class optic. This innovation is the use of a lightweight graphite panel with an aluminum honeycomb core for use as the polishing fixture. These materials have been used in the aerospace industry as structural members due to their light weight and high stiffness. The grinding polishing fixture consists of the graphite composite panel, fittings, and fixtures to allow interface to the polishing machine, and introduction of pitch buttons to support the optic under fabrication. In its operation, the grinding polishing fixture acts as a reaction structure to the polishing tool. It must be stiff enough to avoid imparting a distorted shape to the optic under fabrication and light enough to avoid self-deflection. The fixture must also withstand significant tangential loads from the polishing machine during operations.

Hagopian, John; Strojny, Carl; Budinoff, Jason

2011-01-01

24

Glass/Epoxy Door Panel for Automobiles  

NASA Technical Reports Server (NTRS)

Lightweight panel cost-effective. Integrally-molded intrusion strap key feature of composite outer door panel. Strap replaces bulky and heavy steel instrusion beam of conventional door. Standard steel inner panel used for demonstration purposes. Door redesigned to exploit advantages of composite outer panel thinner. Outer panel for automobilie door, made of glass/epoxy composite material, lighter than conventional steel door panel, meets same strength requirements, and less expensive.

Bauer, J. L. JR.

1985-01-01

25

Fixed mount wavefront sensor  

DOEpatents

A rigid mount and method of mounting for a wavefront sensor. A wavefront dissector, such as a lenslet array, is rigidly mounted at a fixed distance relative to an imager, such as a CCD camera, without need for a relay imaging lens therebetween.

Neal, Daniel R. (Tijeras, NM)

2000-01-01

26

Panel flutter  

NASA Technical Reports Server (NTRS)

Criteria are presented for the prediction of panel flutter, determination of its occurrence, design for its prevention, and evaluation of its severity. Theoretical analyses recommended for the prediction of flutter stability boundaries, vibration amplitudes, and frequencies for several types of panels are described. Vibration tests and wind tunnel tests are recommended for certain panels and environmental flow conditions to provide information for design of verification analysis. Appropriate design margins on flutter stability boundaries are given and general criteria are presented for evaluating the severity of possible short-duration, limited-amplitude panel flutter on nonreusable vehicles.

Dowell, E. H.

1972-01-01

27

Photovoltaic panel clamp  

DOEpatents

A photovoltaic panel clamp includes an upper and lower section. The interface between the assembled clamp halves and the module edge is filled by a flexible gasket material, such as EPDM rubber. The gasket preferably has small, finger like protrusions that allow for easy insertion onto the module edge while being reversed makes it more difficult to remove them from the module once installed. The clamp includes mounting posts or an integral axle to engage a bracket. The clamp also may include a locking tongue to secure the clamp to a bracket.

Brown, Malcolm P.; Mittan, Margaret Birmingham; Miros, Robert H. J.; Stancel, Robert

2013-03-19

28

High bandwidth optical mount  

DOEpatents

An optical mount, which directs a laser beam to a point by controlling the position of a light-transmitting optic, is stiffened so that a lowest resonant frequency of the mount is approximately one kilohertz. The optical mount, which is cylindrically-shaped, positions the optic by individually moving a plurality of carriages which are positioned longitudinally within a sidewall of the mount. The optical mount is stiffened by allowing each carriage, which is attached to the optic, to move only in a direction which is substantially parallel to a center axis of the optic. The carriage is limited to an axial movement by flexures or linear bearings which connect the carriage to the mount. The carriage is moved by a piezoelectric transducer. By limiting the carriage to axial movement, the optic can be kinematically clamped to a carriage. 5 figs.

Bender, D.A.; Kuklo, T.

1994-11-08

29

High bandwidth optical mount  

DOEpatents

An optical mount, which directs a laser beam to a point by controlling the position of a light-transmitting optic, is stiffened so that a lowest resonant frequency of the mount is approximately one kilohertz. The optical mount, which is cylindrically-shaped, positions the optic by individually moving a plurality of carriages which are positioned longitudinally within a sidewall of the mount. The optical mount is stiffened by allowing each carriage, which is attached to the optic, to move only in a direction which is substantially parallel to a center axis of the optic. The carriage is limited to an axial movement by flexures or linear bearings which connect the carriage to the mount. The carriage is moved by a piezoelectric transducer. By limiting the carriage to axial movement, the optic can be kinematically clamped to a carriage.

Bender, Donald A. (Dublin, CA); Kuklo, Thomas (Oakdale, CA)

1994-01-01

30

Mounting for windmills  

SciTech Connect

A windmill structure includes a mounting for supporting one or a large number of windmills in an elevated position above the ground so that the windmills can weathercock and align with the wind. The mounting arrangement limits movement continuously in one direction and returns the windmill to its original position.

Allison, W. D.

1980-08-12

31

Spherical mirror mount  

NASA Technical Reports Server (NTRS)

A spherical mounting assembly for mounting an optical element allows for rotational motion of an optical surface of the optical element only. In that regard, an optical surface of the optical element does not translate in any of the three perpendicular translational axes. More importantly, the assembly provides adjustment that may be independently controlled for each of the three mutually perpendicular rotational axes.

Meyer, Jay L. (Inventor); Messick, Glenn C. (Inventor); Nardell, Carl A. (Inventor); Hendlin, Martin J. (Inventor)

2011-01-01

32

Stable mirror mount  

DOEpatents

An improved mirror mount assembly is disclosed. The mirror mount assembly provides a post assembly slidable in a Y-axis orientation and a nut plate assembly slidable in an X-axis orientation and means for simultaneously locking said post assembly and said key assembly in a fixed position.

Cutburth, R.W.

1983-11-04

33

Stable mirror mount  

DOEpatents

An improved mirror mount assembly is disclosed. The mirror mount assembly provides a post assembly slidable in a Y-axis orientation and a nut plate assembly slidable in an X-axis orientation and a device for simultaneously locking the post assembly and the key assembly in a fixed position.

Cutburth, Ronald W. (Bulls Gap, TN)

1990-01-01

34

Optoelectronic Mounting Structure  

DOEpatents

An optoelectronic mounting structure is provided that may be used in conjunction with an optical transmitter, receiver or transceiver module. The mounting structure may be a flexible printed circuit board. Thermal vias or heat pipes in the head region may transmit heat from the mounting structure to the heat spreader. The heat spreader may provide mechanical rigidity or stiffness to the heat region. In another embodiment, an electrical contact and ground plane may pass along a surface of the head region so as to provide an electrical contact path to the optoelectronic devices and limit electromagnetic interference. In yet another embodiment, a window may be formed in the head region of the mounting structure so as to provide access to the heat spreader. Optoelectronic devices may be adapted to the heat spreader in such a manner that the devices are accessible through the window in the mounting structure.

Anderson, Gene R. (Albuquerque, NM); Armendariz, Marcelino G. (Albuquerque, NM); Baca, Johnny R. F. (Albuquerque, NM); Bryan, Robert P. (Albuquerque, NM); Carson, Richard F. (Albuquerque, NM); Chu, Dahwey (Albuquerque, NM); Duckett, III, Edwin B. (Albuquerque, NM); McCormick, Frederick B. (Albuquerque, NM); Peterson, David W. (Sandia Park, NM); Peterson, Gary D. (Albuquerque, NM); Reber, Cathleen A. (Corrales, NM); Reysen, Bill H. (Lafayette, CO)

2004-10-05

35

Liver Panel  

MedlinePLUS

... Hepatitis , Hemochromatosis , Wilson Disease , Cirrhosis Elsewhere On The Web American Liver Foundation MayoClinic.com: Liver function tests KidsHealth from Nemours: Hepatic [Liver] Function Panel National ...

36

Mount Jefferson, Oregon  

NSDL National Science Digital Library

This resource about Mount Jefferson, a stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, geologic and eruptive history, and historical information about it. The site explains that Mount Jefferson has erupted repeatedly for hundreds of thousands of years, with its last eruptive episode during the last major glaciation, which culminated about 15,000 years ago. Geologic evidence shows that Mount Jefferson is capable of large explosive eruptions. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

37

Thermal Compensating Mount.  

National Technical Information Service (NTIS)

This invention relates to a device for mounting an alignment sensitive component to provide stability during temperature fluctuations. Alignment sensitive components such as quartz prisms for lasers are often subjected to temperature changes which result ...

A. Jalink S. R. Campbell

1988-01-01

38

Mount Etna Eruption  

NSDL National Science Digital Library

This animation is a zoom into the Ongoing Mount Etna Eruption. The data was aquired from the MODIS instrument at 9:40 UTC on July 24, 2001. The Ash Plume and lava streaming from the volcano are clearly visible.

Perkins, Lori; Salomonson, Vincent

2001-07-25

39

Mouth Mounted Accelerometer Pack.  

National Technical Information Service (NTIS)

This patent application covers an apparatus, for measuring head accelerations of a test subject, having a mouthpiece which includes metal clips for securing the mouthpiece to the upper teeth of the test subject. Three accelerometers are secured to a mount...

A. M. Higgins

1979-01-01

40

Mechanical strain isolator mount  

NASA Technical Reports Server (NTRS)

Certain devices such as optical instruments must preserve their alignmental integrity while being subjected to mechanical strain. A mechanical strain isolator mount is provided to preserve the alignmental integrity of an alignment sensitive instrument. An alignment sensitive instrument is mounted on a rectangular base. Flexural legs are connected at their proximal ends to the rectangular base. Flexural legs are also spaced parallel to the sides. Mounting pads are connected to the legs at the distal end and the mechanical strain isolator mount is attached to the substrate by means of threaded bolts. When a mounting pad and its respective leg is subjected to lateral strain in either the X or Y direction via the substrate, the respective leg relieves the strain by bending in the direction of the strain. An axial strain on a mounting pad in the Z direction is relieved by a rotational motion of the legs in the direction of the strain. When the substrate is stress free, the flexural legs return to their original condition and thus preserve the original alignment integrity of the alignment sensitive instrument.

James, Gordon E. (inventor)

1991-01-01

41

Laboratory calibration of field reflectance panels  

NASA Technical Reports Server (NTRS)

A method used for calibrating field reflectance panels in the visible and shortwave infrared wavelength range is described. The directional reflectance factor of painted barium sulfate (BaSO4) panels is determined. The reference for this method is the hemispherical reflectance of pressed polytetrafluoroethylene (halon) powder prepared according to National Bureau of Standards (NBS) directions. The panels and a radiometer are mounted on rotation stages to measure the reflectance factor at different incidence and view angles. The sensor can be any laboratory or field filter radiometer small enough to mount on the apparatus. The method is used to measure the reflectance factors of halon and BaSO4 panels between 0.45 and 0.85 micrometers. These reflectance factors are compared to those measured by a field apparatus. The results agree to within 0.013 in reflectance at incidence angles between 15 and 75 degrees.

Biggar, S. F.; Labed, J.; Santer, R. P.; Slater, P. N.; Jackson, R. D.

1988-01-01

42

Solar panel  

SciTech Connect

A solar panel is shown for use as a double panel window structure. It has an outer frame formed by an H-shaped extrusion that has one of its outermost legs shortened, and a pair of generally parallel legs or flanges that are inwardly directed of the frame. The outer surface of these flanges are furnished with a dual pressure-sensitive adhesive tape having a width between 1/4 inch and 1 inch. A pane of transparent material is sealed around its periphery into engagement with the adhesive tape for forming a double pane solar panel. Several modifications are also shown for exerting a mechanical locking force on at least one of the panes.

Sitzler, E.R.; Moore, F.W.

1984-06-19

43

Vibration isolation mounting system  

NASA Technical Reports Server (NTRS)

A system is disclosed for mounting a vibration producing device onto a spacecraft structure and also for isolating the vibration forces thereof from the structure. The system includes a mount on which the device is securely mounted and inner and outer rings. The rings and mount are concentrically positioned. The system includes a base (secured to the structure) and a set of links which are interconnected by a set of torsion bars which allow and resist relative rotational movement therebetween. The set of links are also rotatably connected to a set of brackets which are rigidly connected to the outer ring. Damped leaf springs interconnect the inner and outer rings and the mount allow relative translational movement therebetween in X and Y directions. The links, brackets and base are interconnected and configured so that they allow and resist translational movement of the device in the Z direction so that in combination with the springs they provide absorption of vibrational energy produced by the device in all three dimensions while providing rotational stiffness about all three axes to prevent undesired rotational motions.

Carter, Sam D. (Inventor); Bastin, Paul H. (Inventor)

1995-01-01

44

Operation and maintenance cost data for residential photovoltaic modules/panels  

NASA Technical Reports Server (NTRS)

Costs associated with the operation and maintenance of residential photovoltaic modules and arrays are studied. Six basic topics related to operation and maintenance to photovoltaic arrays are investigated: maintenance; cleaning; panel replacement; gasket repair/replacement; wiring repair/replacement; and termination repair/replacement. The effects of the mounting types (rack mount, stand off mount, direct mount and integral mount) and the installation/replacement type (sequential, partial interruption and independent) are identified and described. Methods of reducing maintenance costs are suggested.

Oster, J. R., Jr.; Zaremski, D. R., Jr.; Albert, E. M.; Hawkins, S. L.

1980-01-01

45

Panel Sessions.  

ERIC Educational Resources Information Center

Lists the speakers and summarizes the issues addressed for 12 panel sessions on topics related to networking, including libraries and national networks, federal national resources and energy programs, multimedia issues, telecommuting, remote image serving, accessing the Internet, library automation, scientific information, applications of Z39.50,…

Proceedings of the ASIS Mid-Year Meeting, 1992

1992-01-01

46

Pressure vessel bottle mount  

NASA Technical Reports Server (NTRS)

A mounting assembly for mounting a composite pressure vessel to a vehicle includes a saddle having a curved surface extending between two pillars for receiving the vessel. The saddle also has flanged portions which can be bolted to the vehicle. Each of the pillars has hole in which is mounted the shaft portion of an attachment member. A resilient member is disposed between each of the shaft portions and the holes and loaded by a tightening nut. External to the holes, each of the attachment members has a head portion to which a steel band is attached. The steel band circumscribes the vessel and translates the load on the springs into a clamping force on the vessel. As the vessel expands and contracts, the resilient members expand and contract so that the clamping force applied by the band to the vessel remains constant.

Wingett, Paul (Inventor)

2001-01-01

47

Mount Shasta, California  

NSDL National Science Digital Library

This resource about Mount Shasta, a compound stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. Students learn that Mount Shasta dominates the landscape of northern California and is the largest stratovolcano of the Cascade chain at approximately 350 cubic kilometers. Mount Shasta hosts five glaciers, including the Whitney Glacier, the largest in California. Shastina is a large subsidiary cone that rises to 3,758 meters on the west flank of the compound volcano. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

48

MOUNT BALDY WILDERNESS, ARIZONA.  

USGS Publications Warehouse

The Mount Baldy Wilderness, Arizona, was surveyed for mineral resources and was judged to have little or no promise for the occurrence of mineral resources. No mineral deposits, mining claims, or concentrations of trace metals were recognized within the area. No oil test holes have been drilled within the area; holes drilled about 35 mi north of the area were not productive. Further study of the Mount Baldy Wilderness would seem warranted only in the event that economic deposits of minerals or petroleum are found in nearby areas.

Finnell, Tommy, L.; Soule, John, H.

1984-01-01

49

Touch panel  

US Patent & Trademark Office Database

A touch panel of the present invention in which a piezoelectric substrate is fixed to a movable plate or a supporting substrate has a reduced weight, size, and thickness by providing simpler wiring. The touch panel comprises: a movable plate having an input manipulation surface; a supporting substrate, disposed with a slight insulation gap from the movable plate, for supporting the movable plate from a back surface thereof; conductive layers on the movable plate and the supporting substrate on their respective opposing surfaces; and a piezoelectric substrate fixed to the movable plate or the supporting substrate. A pair of driving electrodes on the piezoelectric substrate are fixed to respective opposing surfaces of the piezoelectric substrate. A conductive layer electrode of the movable plate, a conductive layer electrode of the supporting substrate, and the pair of driving electrodes of the piezoelectric substrate are withdrawn integrally using a single connector tail.

2007-06-05

50

Torpedo Motor Mounting Structure.  

National Technical Information Service (NTIS)

The torpedo motor mounting structure provides noise-isolation and facilitates motor installation and removal. The frame of the motor is provided with end-bells having generally frusto-conical surfaces, and the torpedo tailcone section is provided with a p...

J. G. Shmorhun E. H. Lenker

1964-01-01

51

Apollo Telescope Mount Illustration  

NASA Technical Reports Server (NTRS)

The Apollo Telescope Mount (ATM) served as the first marned astronomical observatory in space. It was designed for solar research from Earth orbit aboard the Skylab. This image is a cutaway illustration of the ATM canister with callouts and characteristics. The ATM was designed and developed by the Marshall Space Flight Center.

1972-01-01

52

Apollo Telescope Mount Illustration  

NASA Technical Reports Server (NTRS)

The Apollo Telescope Mount (ATM) served as the first marned astronomical observatory in space. It was designed for solar research from Earth orbit aboard the Skylab. This image is a cutaway illustration of the ATM canister with callouts. The ATM was designed and developed by the Marshall Space Flight Center.

1971-01-01

53

Apollo Telescope Mount Illustration  

NASA Technical Reports Server (NTRS)

The Apollo Telescope Mount (ATM) served as the first marned astronomical observatory in space. It was designed for solar research from Earth orbit aboard the Skylab. This image is a cutaway illustration of the ATM canister. The ATM was designed and developed by the Marshall Space Flight Center.

1971-01-01

54

Mount. Etna, Sicily  

NASA Technical Reports Server (NTRS)

Mount. Etna, (37.5 N, 15.0E) a still active volcano on the east coast of Sicily, is almost always seen venting steam into the atmosphere. Just to the south of the volcano is the coastal port city of Catania.

1981-01-01

55

52. VIEW OF REMAINS OF ORIGINAL 1907 CONTROL PANEL, LOCATED ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

52. VIEW OF REMAINS OF ORIGINAL 1907 CONTROL PANEL, LOCATED ON NORTH WALL OF EAST END OF CONTROL ROOM. PORTIONS OF THIS PANEL REMAINED IN USE UNTIL THE PLANT CLOSED. THE METERS AND CONTROLS ARE MOUNTED ON SOAPSTONE PANELS. THE INSTRUMENT IN THE LEFT CENTER OF THE PHOTOGRAPH IS A TIRRILL VOLTAGE REGULATOR. - New York, New Haven & Hartford Railroad, Cos Cob Power Plant, Sound Shore Drive, Greenwich, Fairfield County, CT

56

Spray-ring mounting assembly  

SciTech Connect

This patent describes a thrust augmentation combustor for a gas turbine engine having a duct, an assembly for mounting a spray ring or the like to the duct and having improved vibration isolation characteristics. It comprises a clevis arranged for fixed mounting to the duct, a circular pin mounted in the clevis, an elongated slider having a central circular axial bore and mounted for rotational movement on the pin, the slider having at least two parallel exterior sidewalls, and a bracket for mounting the spray ring having an elongated bore mounted on the slider.

Barcza, W.K.; Concordia, M.J.

1992-07-07

57

Mount St. Helens Rebirth  

NASA Technical Reports Server (NTRS)

The catastrophic eruption of Mt. St. Helens 20 years ago today (on May 18, 1980), ranks among the most important natural events of the twentieth century in the United States. Because Mt. St. Helens is in a remote area of the Cascades Mountains, only a few people were killed by the eruption, but property damage and destruction totaled in the billions of dollars. Mount St. Helens is an example of a composite or stratovolcano. These are explosive volcanoes that are generally steep-sided, symmetrical cones built up by the accumulation of debris from previous eruptions and consist of alternating layers of lava flows, volcanic ash and cinder. Some of the most photographed mountains in the world are stratovolcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Hood in Oregon, and Mount Rainier in Washington. The recently erupting Mount Usu on the island of Hokkaido in Japan is also a stratovolcano. Stratovolcanoes are characterized by having plumbing systems that move magma from a chamber deep within the Earth's crust to vents at the surface. The height of Mt. St. Helens was reduced from about 2950 m (9677 ft) to about 2550 m (8364 ft) as a result of the explosive eruption on the morning of May 18. The eruption sent a column of dust and ash upwards more than 25 km into the atmosphere, and shock waves from the blast knocked down almost every tree within 10 km of the central crater. Massive avalanches and mudflows, generated by the near-instantaneous melting of deep snowpacks on the flanks of the mountain, devastated an area more than 20 km to the north and east of the former summit, and rivers choked with all sorts of debris were flooded more than 100 km away. The area of almost total destruction was about 600 sq. km. Ash from the eruption cloud was rapidly blown to the northeast and east producing lightning which started many small forest fires. An erie darkness caused by the cloud enveloped the landscape more than 200 km from the blast area, and ash could be seen falling from the sky over the Great Plains, more than 1500 km distant. This image was acquired by Landsat 7 on Aug. 22, 1999. It was produced at 30-m resolution using bands 3, 2, and 1 to display red, green, and blue, respectively ('true color'). Some of the effects of the massive eruption on May 18, 1980, can still be seen clearly, especially on the northern and eastern flanks of Mount St. Helens, which are still mostly barren (shades of white and gray). The crater is in the center of the image. Note the streaking from the crater (gray on the image). These are the remnants of pyroclastic flows (superheated avalanches of gas, ash and pieces of rock) that carved deep channels down the slopes and onto the relatively flat areas near the base of the mountain. The partially-filled Spirit Lake can be seen just to the northeast of the crater (blue-black on the image), and the where most of the energy was directed during the blast is the gray area immediately to the northwest of the crater. However, on other parts of the mountain, the rejuvenation process is obvious. Ash deposits have supplied minerals which have accelerated vegetation growth (various shades of green). Though far from what it looked like 20 years ago, Mount St Helens is actively recovering. Data courtesy Landsat 7 project and EROS Data Center. Caption by James Foster, NASA Goddard Space Flight Center.

2002-01-01

58

Mount Horeb Digital Collections  

NSDL National Science Digital Library

Visitors to Wisconsin often find themselves wandering through Mount Horeb, which is no surprise given its historical and cultural curiosities. This digital collection from the University of Wisconsin Digital Collections (UWDC) offers a range of printed materials depicting the early 20th century in this quaint town. The items here include church histories, family memories, books about the celebrated Norway Building, and other publications from the Mount Horeb Area Historical Society. All told, there are 23 documents here, including several rare photographs of John F. Kennedy giving campaign speeches during his 1960 trek through Wisconsin. It's worth noting that visitors can search the entire collection and, if they choose, go on to the complete state of Wisconsin collection homepage.

2012-01-01

59

Plasma Screen Floating Mount  

DOEpatents

A mounting system for a flat display screen, particularly a plasma display screen, suspends the screen separately in each of the x-, y- and z-directions. A series of frames located by linear bearings and isolated by springs and dampers allows separate controlled movement in each axis. The system enables the use of relatively larger display screens in vehicles in which plasma screen are subject to damage from vibration.

Eakle, Robert F. (New Ellenton, SC); Pak, Donald J. (Martine, GA)

2004-10-26

60

Dental articulator mount  

US Patent & Trademark Office Database

A mounting apparatus for a dental articulator including a stationary base, a rigid support member extending from the base and an upper clamp for releasably receiving and supporting the articulator upper member. An adjustable support piece is retained on the rigid support member and is adapted to contact the articulator lower member to limit the lowermost position thereof while permitting at least lateral movement of the articulator lower member relative to the articulator upper member to thus stimulate human jaw movements.

1988-07-19

61

EMU helmet mounted display  

NASA Technical Reports Server (NTRS)

A helmet mounted display device is disclosed for projecting a display on a flat combiner surface located above the line of sight where the display is produced by two independent optical channels with independent LCD image generators. The display has a fully overlapped field of view on the combiner surface and the focus can be adjusted from a near field of four feet to infinity.

Marmolejo, Jose (inventor); Smith, Stephen (inventor); Plough, Alan (inventor); Clarke, Robert (inventor); Mclean, William (inventor); Fournier, Joseph (inventor)

1990-01-01

62

Mount Hood, Oregon  

NSDL National Science Digital Library

This resource about Mt. Hood, a stratovolcano in the Cascade Range, features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. Mount Hood, Oregon's highest peak, forms a prominent backdrop to the state's largest city, Portland. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

63

Mount Mayon Erupts in the Philippines  

NSDL National Science Digital Library

Mount Mayon, one of the most active volcanoes in the Philippines, erupted on February 24, 2000, after lying dormant for eight months. The active volcano spewed lava, rocks, and ash repeatedly over the next three days. Volcanologists at the Philippine Institute of Volcanology and Seismology have warned of the likely possibility of bigger eruptions in the near future, with the greatest effects on the southeast and southwest sectors of the volcano. The volcano has already hurled molten boulders and 3,000-meter columns of ash into the air forcing an evacuation of some 50,000 people in a eight-kilometer radius around the crater. Volcanic debris estimated at 60 million metric tons are now lodged into the volcano's gullies. Heavy rainfall could cause more calamity in the form of mudflows. This week's In the News takes a closer look at the volcanic activity at Mount Mayon.

Ramanujan, Krishna.

64

Mount Sinai Hospital: Blueprint  

NSDL National Science Digital Library

Led by Dr. Christopher Hogue of the Samuel Lunenfeld Research Institute at Mount Sinai Hospital the Blueprint Initiative "develops, hosts and maintains public biological databases and Bioinformatics software tools such as BIND, SeqHound and Distributed Folding." The Blueprint research program also has a sister node located at the National University of Singapore. In addition to providing access to a variety of databases and software, the Blueprint website offers links to a number of downloadable research publications. Site visitors will also find job postings (when available) in the areas of software development, and curation. Additional Blueprint services include user help, educational and outreach support, and product documentation.

65

Heat exchanger panel  

NASA Technical Reports Server (NTRS)

The present invention relates to a heat exchanger panel which has broad utility in high temperature environments. The heat exchanger panel has a first panel, a second panel, and at least one fluid containment device positioned intermediate the first and second panels. At least one of the first panel and the second panel have at least one feature on an interior surface to accommodate the at least one fluid containment device. In a preferred embodiment, each of the first and second panels is formed from a high conductivity, high temperature composite material. Also, in a preferred embodiment, the first and second panels are joined together by one or more composite fasteners.

Warburton, Robert E. (Inventor); Cuva, William J. (Inventor)

2005-01-01

66

Clamp-mount device  

NASA Technical Reports Server (NTRS)

A clamp-mount device is disclosed for mounting equipment to an associated I-beam and the like structural member of the type having oppositely extending flanges wherein the device comprises a base and a pair of oppositely facing clamping members carried diagonally on the base clamping flanges therebetween and having flange receiving openings facing one another. Lock means are carried diagonally by the base opposite the clamping members locking the flanges in the clamping members. A resilient hub is carried centrally of the base engaging and biasing a back side of the flanges maintaining tightly clamped and facilitating use on vertical as well as horizontal members. The base turns about the hub to receive the flanges within the clamping members. Equipment may be secured to the base by any suitable means such as bolts in openings. Slidable gate latches secure the hinged locks in an upright locking position. The resilient hub includes a recess opening formed in the base and a rubber-like pad carried in this opening being depressably and rotatably carried therein.

Clark, K. H. (inventor)

1983-01-01

67

Surface mount component jig  

DOEpatents

A device for bending and trimming the pins of a dual-inline-package component and the like for surface mounting rather than through mounting to a circuit board comprises, in a first part, in pin cutter astride a holder having a recess for holding the component, a first spring therebetween, and, in a second part, two flat members pivotally interconnected by a hinge and urged to an upward peaked position from a downward peaked position by a second spring. As a downward force is applied to the pin cutter it urges the holder downward, assisted by the first spring and a pair of ridges riding on shoulders of the holder, to carry the component against the upward peaked flat members which guide the pins outwardly. As the holder continues downwardly, the flat members pivot to the downward peaked position bending the pins upwardly against the sides of the holder. When the downward movement is met with sufficient resistance, the ridges of the pin cutter ride over the holder's shoulders to continue downward to cut any excess length of pin.

Kronberg, James W. (Beech Island, SC)

1990-08-07

68

Stable mirror mount  

SciTech Connect

This patent describes a mirror mount for supporting a mirror where the mirror is oriented in an x-ray plane. The mirror mount comprising post assembly means for supporting the mirror, first keyway means for orienting the post assembly means such that the post assembly means are slidable only in a first direction parallel to a y-axis orientation, and including first screw holes, nut plate means for supporting the first keyway means and including second screw holes, second keyway means for supporting the nut plate means such that the nut plate means are slidable only in a second direction normal to the first direction and parallel to an x-axis orientation such that the post assembly means and the nut plate means are each slidable in a plane parallel to the x-y plane, and locking means normal to the x-y plane including a single screw type locking member movable in a third direction orthogonal to the first and second directions between a first position through the first and second screw holes for simultaneously locking in a single step in clamping engagement the first and second keyway means.

Cutburth, R.W.

1990-01-09

69

Stability and Control Properties of Saddle-Mounted Truck Combinations.  

National Technical Information Service (NTIS)

Newly manufactured, heavy-duty trucks are often transported over the highway in a combination of units comprising the so-called 'saddle-mount' configuration. In the study, the braking, roll stability, and performance of such configurations in rapid evasiv...

R. Ervin A. Mathew

1985-01-01

70

Mount Vesuvius, Italy  

NASA Technical Reports Server (NTRS)

This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Mt. Vesuvius, Italy was acquired September 26, 2000. The full-size false-color image covers an area of 36 by 45 km. Vesuvius overlooks the city of Naples and the Bay of Naples in central Italy. (Popocatepetl and Mount Fuji are other volcanos surrounded by dense urban areas.) In 79 AD, Vesuvius erupted cataclysmically, burying all of the surrounding cites with up to 30 m of ash. The towns of Pompeii and Herculanaeum were rediscovered in the 18th century, and excavated in the 20th century. They provide a snapshot of Roman life from 2000 years ago: perfectly preserved are wooden objects, food items, and the casts of hundreds of victims. Vesuvius is intensively monitored for potential signs of unrest that could signal the beginning of another eruption. Image courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team

2002-01-01

71

Mount Usu Erupts  

NSDL National Science Digital Library

The snow-covered peak of the 2,402-foot (732-meter) Mount Usu erupted today, spewing black smoke and ash and forcing over 15,000 people from their homes. Historically one of Japan's most active volcanoes, Usu last erupted in 1978 after a number of earthquakes which formed a new and smaller volcano by its side. Mudslides triggered by that eruption killed three people in 1978, but so far no casualties have been reported from this eruption, which was predicted by experts. While volcanologists doubt that another major explosion will occur, they have not ruled out further activity. Another concern is mudslides, as the hot ash and smoke could quickly melt the mountain's thick carpet of snow.

De Nie, Michael W.

72

Mount St. Helens  

NSDL National Science Digital Library

The Mount St. Helens Web page was built by a student in Vancouver, Washington and offers images, stories, and curriculum related to the eruption of the volcano in 1980. Over 1,500 images are available allowing tours of the volcano before, during, and after the eruption. Learn about the people, animals, and plants affected by the blast, and find out how the earth heals itself from an event of this magnitude. The Living Laboratory Curriculum section takes advantage of a unique opportunity to relate a presently-observable volcanic phenomenon to study plant succession, animal behavior, evolutionary and geologic processes, ecology, weather patterns and environmental issues. Links to other volcano-related sites include NASA's Volcano World.

73

MAVRIC pressure sensor mounting apparatus  

NASA Technical Reports Server (NTRS)

Unsteady pressure sensor, holding sleeve, and mounting block with orifice. For MAVRIC I model test in the Transonic Dynamics Tunnel. Model for Aeroelastic Validation Research Involving Computation (MAVRIC).

2000-01-01

74

Mount St. Helens Flyover  

NASA Technical Reports Server (NTRS)

This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) image of Mt. St. Helens volcano in Washington State was acquired on August 8, 2000 and covers an area of 37 by 51 km. Mount Saint Helens, a volcano in the Cascade Range of southwestern Washington that had been dormant since 1857, began to show signs of renewed activity in early 1980. On 18 May 1980, it erupted with such violence that the top of the mountain was blown off, spewing a cloud of ash and gases that rose to an altitude of 19 kilometers. The blast killed about 60 people and destroyed all life in an area of some 180 square kilometers (some 70 square miles), while a much larger area was covered with ash and debris. It continues to spit forth ash and steam intermittently. As a result of the eruption, the mountain's elevation decreased from 2,950 meters to 2,549 meters. The simulated fly-over was produced by draping ASTER visible and near infrared image data over a digital topography model, created from ASTER's 3-D stereo bands. The color was computer enhanced to create a 'natural' color image, where the vegetation appears green. The topography has been exaggerated 2 times to enhance the appearance of the relief. Landsat7 aquired an image of Mt. St. Helens on August 22, 1999. Image and animation courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.

2002-01-01

75

SEMMSS accelerometer mount transmissibility evaluation  

SciTech Connect

Two candidate accelerometer mount adhesives were tested for vibration transmissibility using the same fixture and procedures described previously. The transmissibility is normalized relative to the base-case threaded stud accelerometer mount, and these two adhesives are ranked with the four previously tested adhesives according to performance.

Andriulli, J.B.

1987-05-01

76

Scattering Effects of Solar Panels on Space Station Antenna Performance  

NASA Technical Reports Server (NTRS)

Characterizing the scattering properties of the solar array panels is important in predicting Space Station antenna performance. A series of far-field, near-field, and radar cross section (RCS) scattering measurements were performed at S-Band and Ku-Band microwave frequencies on Space Station solar array panels. Based on investigation of the measured scattering patterns, the solar array panels exhibit similar scattering properties to that of the same size aluminum or copper panel mockup. As a first order approximation, and for worse case interference simulation, the solar array panels may be modeled using perfect reflecting plates. Numerical results obtained using the Geometrical Theory of Diffraction (GTD) modeling technique are presented for Space Station antenna pattern degradation due to solar panel interference. The computational and experimental techniques presented in this paper are applicable for antennas mounted on other platforms such as ship, aircraft, satellite, and space or land vehicle.

Panneton, Robert J.; Ngo, John C.; Hwu, Shian U.; Johnson, Larry A.; Elmore, James D.; Lu, Ba P.; Kelley, James S.

1994-01-01

77

Bioburden release of Ariane 5 Fairing Acoustic Protection Panels  

NASA Astrophysics Data System (ADS)

The ESA-NASA ExoMars mission will be subject to strict Planetary Protection constrictions. The original ExoMars mission concept was based on an Ariane 5 launch system. Like all launch systems, the Ariane 5 fairing is lined with acoustic protection panels. These panels consist of an outer polyester/cotton fabric and an inner open celled foam. During launch the panels will be exposed to vibrations and a decrease in pressure. A release of possible external and/ or embedded microbes would cause a contamination of the satellite. Planetary Protection requirements for ExoMars imply the determination of the bioburden release from the Ariane 5 Fairing Acoustic Protection Panels (FAP-panels). Thus a study at ESTEC was performed comparing the bioburden release of a sterilized and non-sterilized panel by simulating a launch environment. Panels were mounted in test jigs above a sterile ground plate. Sterile stainless steel witness plates for the determination of bioburden release were mounted on the latter. The launch environment was simulated in two different tests. In a vacuum chamber the panels were exposed to a depressurization event. For the simulation of the vibrations the jigs were mounted in the Large European Acoustic Facility (LEAF) at ESTEC. After each test witness plates were demounted under sterile conditions and analyzed for microbial growth by incubating them in agar. Furthermore pieces of the outer fabric as well as the inner foam were taken and examined for embedded microbes. In total the amount of embedded microbes was very low and there was no significant difference between the sterilized and non-sterilized panel concerning the released bioburden. Thus sterilization of the Ariane 5 FAP-panels seems not necessary to comply with Planetary Protection constraints. Although the ExoMars project will use a different launch system in the new mission concept, the data acquired during these tests can be used for future scientific satellites launched with Ariane 5.

Stieglmeier, Michaela; Rohr, Thomas; Schmeitzky, Olivier; Rumler, Peter; Kminek, Gerhard

78

Detector Mount Design for IGRINS  

NASA Astrophysics Data System (ADS)

The Immersion Grating Infrared Spectrometer (IGRINS) is a near-infrared wide-band high-resolution spectrograph jointly developed by the Korea Astronomy and Space Science Institute and the University of Texas at Austin. IGRINS employs three HAWAII-2RG Focal Plane Array (H2RG FPA) detectors. We present the design and fabrication of the detector mount for the H2RG detector. The detector mount consists of a detector housing, an ASIC housing, a Field Flattener Lens (FFL) mount, and a support base frame. The detector and the ASIC housing should be kept at 65 K and the support base frame at 130 K. Therefore they are thermally isolated by the support made of GFRP material. The detector mount is designed so that it has features of fine adjusting the position of the detector surface in the optical axis and of fine adjusting yaw and pitch angles in order to utilize as an optical system alignment compensator. We optimized the structural stability and thermal characteristics of the mount design using computer-aided 3D modeling and finite element analysis. Based on the structural and thermal analysis, the designed detector mount meets an optical stability tolerance and system thermal requirements. Actual detector mount fabricated based on the design has been installed into the IGRINS cryostat and successfully passed a vacuum test and a cold test.

Oh, Jae Sok; Park, Chan; Cha, Sang-Mok; Yuk, In-Soo; Park, Kwijong; Kim, Kang-Min; Chun, Moo-Young; Ko, Kyeongyeon; Oh, Heeyoung; Jeong, Ueejeong; Nah, Jakyoung; Lee, Hanshin; Jaffe, Daniel T.

2014-06-01

79

SXI prototype mirror mount  

NASA Astrophysics Data System (ADS)

The purpose of this contract was to provide optomechanical engineering and fabrication support to the Solar X-ray Imager (SXI) program in the areas of mirror, optical bench and camera assemblies of the telescope. The Center for Applied Optics (CAO) worked closely with the Optics and S&E technical staff of MSFC to develop and investigate the most viable and economical options for the design and fabrication of a number of parts for the various telescope assemblies. All the tasks under this delivery order have been successfully completed within budget and schedule. A number of development hardware parts have been designed and fabricated jointly by MSFC and UAH for the engineering model of SXI. The major parts include a nickel electroformed mirror and a mirror mount, plating and coating of the ceramic spacers, and gold plating of the contact rings and fingers for the camera assembly. An aluminum model of the high accuracy sun sensor (HASS) was also designed and fabricated. A number of fiber optic tapers for the camera assembly were also coated with indium tin oxide and phosphor for testing and evaluation by MSFC. A large number of the SXI optical bench parts were also redesigned and simplified for a prototype telescope. These parts include the forward and rear support flanges, front aperture plate, the graphite epoxy optical bench and a test fixture for the prototype telescope. More than fifty (50) drawings were generated for various components of the prototype telescope. Some of these parts were subsequently fabricated at UAH machine shop or at MSFC or by the outside contractors. UAH also provide technical support to MSFC staff for a number of preliminary and critical design reviews. These design reviews included PDR and CDR for the mirror assembly by United Technologies Optical Systems (UTOS), and the program quarterly reviews, and SXI PDR and CDR. UAH staff also regularly attended the monthly status reviews, and made a significant number of suggestions to improve the design, assembly and alignment of the telescope. Finally, a high level assembly and alignment plan for the entire telescope was prepared by UAH. This plan addresses the sequence of assembly, the required assembly and alignment tolerances, and the methods to verify the alignment at each step during the assembly process. This assembly and alignment plan will be used to assemble and integrate the engineering model (EM) of the telescope. Later on, based on this plan more detailed assembly and alignment procedures will be developed for the lower-level assemblies of SXI.

1995-04-01

80

SXI prototype mirror mount  

NASA Technical Reports Server (NTRS)

The purpose of this contract was to provide optomechanical engineering and fabrication support to the Solar X-ray Imager (SXI) program in the areas of mirror, optical bench and camera assemblies of the telescope. The Center for Applied Optics (CAO) worked closely with the Optics and S&E technical staff of MSFC to develop and investigate the most viable and economical options for the design and fabrication of a number of parts for the various telescope assemblies. All the tasks under this delivery order have been successfully completed within budget and schedule. A number of development hardware parts have been designed and fabricated jointly by MSFC and UAH for the engineering model of SXI. The major parts include a nickel electroformed mirror and a mirror mount, plating and coating of the ceramic spacers, and gold plating of the contact rings and fingers for the camera assembly. An aluminum model of the high accuracy sun sensor (HASS) was also designed and fabricated. A number of fiber optic tapers for the camera assembly were also coated with indium tin oxide and phosphor for testing and evaluation by MSFC. A large number of the SXI optical bench parts were also redesigned and simplified for a prototype telescope. These parts include the forward and rear support flanges, front aperture plate, the graphite epoxy optical bench and a test fixture for the prototype telescope. More than fifty (50) drawings were generated for various components of the prototype telescope. Some of these parts were subsequently fabricated at UAH machine shop or at MSFC or by the outside contractors. UAH also provide technical support to MSFC staff for a number of preliminary and critical design reviews. These design reviews included PDR and CDR for the mirror assembly by United Technologies Optical Systems (UTOS), and the program quarterly reviews, and SXI PDR and CDR. UAH staff also regularly attended the monthly status reviews, and made a significant number of suggestions to improve the design, assembly and alignment of the telescope. Finally, a high level assembly and alignment plan for the entire telescope was prepared by UAH. This plan addresses the sequence of assembly, the required assembly and alignment tolerances, and the methods to verify the alignment at each step during the assembly process. This assembly and alignment plan will be used to assemble and integrate the engineering model (EM) of the telescope. Later on, based on this plan more detailed assembly and alignment procedures will be developed for the lower-level assemblies of SXI.

1995-01-01

81

Mounting Arrangement for an Inertial Measurement Unit.  

National Technical Information Service (NTIS)

In a mounting arrangement for an instrument, such as an inertial measurement unit, a mounting frame is pivotably mounted to a platform for rotation about a vertical axis and a support frame is rotatably mounted to the mounting frame for rotation about a h...

K. D. Shenkle

1982-01-01

82

The in-flight calibration of a helicopter-mounted Daedalus multispectral scanner  

SciTech Connect

A convenient way that has been used to calibrate, in-flight, a helicopter-mounted Daedalus multispectral scanner is described. It used four large canvas panels laid out in a square with a Spectralon panel as a reference. A calibrated Barnes modular multispectral radiometer, carried on a 2.2-m boom was rotated around a 2.5-m high tripod at the center of the square. The radiometer sampled the four large panels and the Spectralon panel once every two minutes. Atmospheric spectral transmittance measurements were made using a filter radiometer on an autotracking mount during the morning of the flight. The reflectance and optical depth data were used in an atmospheric radiative transfer code to predict the spectral radiances at the scanner. The calibration was completed by comparing the image digital counts to the predicted spectral radiances. 7 refs., 2 figs., 5 tabs.

Balick, L.K.; Golanics, C.J.; Shines, J.E. (EG and G Energy Measurements, Inc., Las Vegas, NV (USA)); Biggar, S.F.; Slater, P.N. (Arizona Univ., Tucson, AZ (USA). Optical Sciences Center)

1991-01-01

83

In-flight calibration of a helicopter-mounted Daedalus multispectral scanner  

Microsoft Academic Search

A convenient technique that has been used to calibrate, in-flight, a helicopter-mounted Daedalus multispectral scanner is described. It used four large canvas panels laid out in a square with a Spectralon panel as a reference. A calibrated Barnes modular multispectral radiometer, carried on a 2.2-m boom, was rotated around a 2.5-m high tripod at the center of the square. The

Lee K. Balick; Charles J. Golanics; Janet E. Shines; Stuart F. Biggar; Philip N. Slater

1991-01-01

84

Textile Repair Shop, Trailer Mounted.  

National Technical Information Service (NTIS)

The document provides test methods and techniques necessary to determine the technical performance and safety characteristics of trailer mounted textile repair shops, and their associated tools and equipment. (Author)

1968-01-01

85

Kinematic high bandwidth mirror mount  

DOEpatents

An adjustable mirror mount system for a mirror is disclosed comprising a mirror support having a planar surface thereon, a mirror frame containing a mirror and having a planar surface behind the mirror facing the planar surface of the mirror support and parallel to the reflecting surface of the mirror and mounted pivotally to the mirror support at a point central to the frame, a first adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along one axis lying in the plane of the planar surface of the mirror frame; and a second adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along a second axis lying in the plane of the planar surface of the mirror frame and perpendicular to the first axis.

Kuklo, Thomas C. (Oakdale, CA)

1995-01-01

86

Kinematic high bandwidth mirror mount  

DOEpatents

An adjustable mirror mount system for a mirror is disclosed comprising a mirror support having a planar surface thereon, a mirror frame containing a mirror and having a planar surface behind the mirror facing the planar surface of the mirror support and parallel to the reflecting surface of the mirror and mounted pivotally to the mirror support at a point central to the frame, a first adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along one axis lying in the plane of the planar surface of the mirror frame; and a second adjustment means between the mirror support and the mirror frame spaced from the central pivot mount for adjusting the movement of the mirror along a second axis lying in the plane of the planar surface of the mirror frame and perpendicular to the first axis. 7 figures.

Kuklo, T.C.

1995-03-21

87

Dry tilt network at Mount Rainier, Washington  

USGS Publications Warehouse

In addition to its primary responsibility of monitoring active Mount St. Helens, the David A. Johnston Cascades Volcano Observatory (CVO) has been charged with obtaining baseline geodetic and geochemical information at each of the other potentially active Cascade volcanoes. Dry tilt and/or trilateration networks were established during 1975-82 at Mount Baker, Mount St. Helens, Mount Hood, Mount Shasta, Lassen Peak, Crater Lake, and Long Valley caldera; coverage was extended during September 1982 to include Mount Rainier.

Dzurisin, Daniel; Johnson, D. J.; Symonds, R. B.

1984-01-01

88

TRMM Solar Array Panels  

NASA Technical Reports Server (NTRS)

This final report presents conclusions/recommendations concerning the TRMM Solar Array; deliverable list and schedule summary; waivers and deviations; as-shipped performance data, including flight panel verification matrix, panel output detail, shadow test summary, humidity test summary, reverse bias test panel; and finally, quality assurance summary.

1998-01-01

89

Optical mounts for harsh environments  

NASA Astrophysics Data System (ADS)

Development and testing of a lightweight-kinematic optical mount with integrated passive vibration-and-shock mitigation technologies and simple / robust optical alignment functionality is presented. Traditionally, optical mounts are designed for use in laboratory environments where the thermal-mechanical environments are carefully controlled to preserve beam path conditions and background disturbances are minimized to facilitate precise optically based measurements. Today's weapon and surveillance systems, however, have optical sensor suites where static and dynamic alignment performance in the presence of harsh operating environments is required to nearly the same precision and where the system cannot afford the mass of laboratory-grade stabilized mounting systems. Jitter and alignment stability is particularly challenging for larger optics operating within moving vehicles and aircraft where high shock and significant temperature excursions occur. The design intent is to have the mount be suitable for integration into existing defense and security optical systems while also targeting new commercial and military components for improved structural dynamic and thermal distortion performance. A mount suitable for moderate-sized optics and an integrated disturbance-optical metrology system are described. The mount design has performance enhancements derived from the integration of proven aerospace mechanical vibration and shock mitigation technologies (i.e. multi-axis passive isolation and integral damping), precision alignment adjustment and lock-out functionality, high dimensional stability materials and design practices which provide benign optical surface figure errors under harsh thermal-mechanical loading. Optical jitter, alignment, and wave-front performance testing of an eight-inch-aperture optical mount based on this design approach are presented to validate predicted performance improvements over an existing commercial off-the-shelf (COTS) design.

Mimovich, Mark E.; Griffee, Jonathan C.; Goodding, James C.

2009-08-01

90

Broadband transmission noise reduction of smart panels featuring piezoelectric shunt circuits and sound-absorbing material  

Microsoft Academic Search

The possibility of a broadband noise reduction of piezoelectric smart panels is experimentally studied. A piezoelectric smart panel is basically a plate structure on which piezoelectric patches with electrical shunt circuits are mounted and sound-absorbing material is bonded on the surface of the structure. Sound-absorbing material can absorb the sound transmitted at the midfrequency region effectively while the use of

Jaehwan Kim; Joong-Kuen Lee

2002-01-01

91

Safety Panel Resources  

NASA Technical Reports Server (NTRS)

The goal of this paper is to explore what resources are potentially available to safety panels and to provide some guidance on how to utilize those resources. While the examples used in this paper will concentrate on the Flight Equipment and Reliability Review Panel (FESRRP) and Extravehicular Activity (EVA) hardware that have come through that panel, as well as resources at Johnson Space Center, the paper will address how this applies to safety panels in general, and where possible cite examples for other safety panels.

Stewart, Christine E.

2008-01-01

92

Organized Continuity Panel Reassignment  

PubMed Central

Background Structured continuity clinical experience is required in all primary care residency programs. There is a paucity of data on whether continuity patient panels are routinely used, what the ideal panel composition is, how panels are managed within residency programs across the country, and the outcomes related to this training requirement. Methods We designed an organized continuity panel reassignment process with the goal of producing balanced resident panels, that is, panels with similar numbers of patients by race/ethnicity, sex, and age group, as well as comparable numbers of patients with diabetes and those with high health care use. This project focused on postgraduate year-1 (PGY-1) panels to use balanced panels for redesign and focus of their initial training experiences on practice-based learning and patient care continuity. Results Findings suggest improved parity in patient care experiences through more evenly distributed panels. Furthermore, the focus on panel review and case management enhanced the curriculum for PGY-1 residents, whose clinical experiences and diabetes clinical quality indicators compared more favorably to residents in earlier classes. Conclusions Balanced continuity panels provide an enhanced substrate for building clinical curricula. Preliminary data suggest that this process helped contribute to improved quality indicators for patients with diabetes.

Bennett, Kevin; Baxley, Elizabeth; Carter, Charles; Stanek, Michele

2011-01-01

93

Interactive optical panel  

DOEpatents

An interactive optical panel assembly 34 includes an optical panel 10 having a plurality of ribbon optical waveguides 12 stacked together with opposite ends thereof defining panel first and second faces 16, 18. A light source 20 provides an image beam 22 to the panel first face 16 for being channeled through the waveguides 12 and emitted from the panel second face 18 in the form of a viewable light image 24a. A remote device 38 produces a response beam 40 over a discrete selection area 36 of the panel second face 18 for being channeled through at least one of the waveguides 12 toward the panel first face 16. A light sensor 42,50 is disposed across a plurality of the waveguides 12 for detecting the response beam 40 therein for providing interactive capability.

Veligdan, James T. (Manorville, NY) [Manorville, NY

1995-10-03

94

Interactive optical panel  

DOEpatents

An interactive optical panel assembly includes an optical panel having a plurality of ribbon optical waveguides stacked together with opposite ends thereof defining panel first and second faces. A light source provides an image beam to the panel first face for being channeled through the waveguides and emitted from the panel second face in the form of a viewable light image. A remote device produces a response beam over a discrete selection area of the panel second face for being channeled through at least one of the waveguides toward the panel first face. A light sensor is disposed across a plurality of the waveguides for detecting the response beam therein for providing interactive capability. 10 figs.

Veligdan, J.T.

1995-10-03

95

Ice Volumes on Cascade Volcanoes: Mount Rainier, Mount Hood, Three Sisters, and Mount Shasta  

USGS Publications Warehouse

During the eruptions of Mount St. Helens the occurrence of floods and mudflows made apparent the need for predictive water-hazard analysis of other Cascade volcanoes. A basic requirement for such analysis is information about the volumes and distributions of snow and ice on other volcanoes. A radar unit contained in a backpack was used to make point measurements of ice thickness on major glaciers of Mount Rainier, Wash.; Mount Hood, Oreg.; the Three Sisters, Oreg.; and Mount Shasta, Calif. The measurements were corrected for slope and were used to develop subglacial contour maps from which glacier volumes were measured. These values were used to develop estimation methods for finding volumes of unmeasured glaciers. These methods require a knowledge of glacier slope, altitude, and area and require an estimation of basal shear stress, each estimate derived by using topographic maps updated by aerial photographs. The estimation methods were found to be accurate within ?20 percent on measured glaciers and to be within ?25 percent when applied to unmeasured glaciers on the Cascade volcanoes. The estimation methods may be applicable to other temperate glaciers in similar climatic settings. Areas and volumes of snow and ice are as follows: Mount Rainier, 991 million ft2, 156 billion ft3; Mount Hood, 145 million ft2, 12 billion ft3; Three Sisters, 89 million ft2, 6 billion ft3; and Mount Shasta, 74 million ft2, 5 billion ft3. The distribution of ice and firn patches within 58 glacierized basins on volcanoes is mapped and listed by altitude and by watershed to facilitate water-hazard analysis.

Driedger, Carolyn L.; Kennard, Paul M.

1986-01-01

96

Mount Fuji [CI] Line Survey  

Microsoft Academic Search

We have constructed the Mount Fuji submillimeter-wave telescope at Nishiyasugawara (alt. 3725 m) near the summit of Mt. Fuji (alt. 3774 m). Thanks to the excellent condition of Mt. Fuji, we have successfully carried out the [CI] survey toward more than 40 square degrees of sky, including Orion MC, Taurus MC, Rosetta MC, DR 15, DR 21, NGC 1333, NGC

Takeshi Sakai; Satoshi Yamamoto

2005-01-01

97

36 Views of Mount Rainier  

ERIC Educational Resources Information Center

Look for ways to take students on virtual journeys to faraway places, and then connect the experience to something they can relate to on a more personal level. In this article, the author describes a block-printing unit inspired by Japanese printmaker, Katsushika Hokusai (1760-1849), and his series of art prints, "Thirty-six Views of Mount Fuji."…

Fortune, Tracy

2011-01-01

98

Mount Rainier active cascade volcano  

NASA Technical Reports Server (NTRS)

Mount Rainier is one of about two dozen active or recently active volcanoes in the Cascade Range, an arc of volcanoes in the northwestern United States and Canada. The volcano is located about 35 kilometers southeast of the Seattle-Tacoma metropolitan area, which has a population of more than 2.5 million. This metropolitan area is the high technology industrial center of the Pacific Northwest and one of the commercial aircraft manufacturing centers of the United States. The rivers draining the volcano empty into Puget Sound, which has two major shipping ports, and into the Columbia River, a major shipping lane and home to approximately a million people in southwestern Washington and northwestern Oregon. Mount Rainier is an active volcano. It last erupted approximately 150 years ago, and numerous large floods and debris flows have been generated on its slopes during this century. More than 100,000 people live on the extensive mudflow deposits that have filled the rivers and valleys draining the volcano during the past 10,000 years. A major volcanic eruption or debris flow could kill thousands of residents and cripple the economy of the Pacific Northwest. Despite the potential for such danger, Mount Rainier has received little study. Most of the geologic work on Mount Rainier was done more than two decades ago. Fundamental topics such as the development, history, and stability of the volcano are poorly understood.

1994-01-01

99

Helicopter Flight to Mount Redoubt  

USGS Multimedia Gallery

Scientists from the USGS Alaska Volcano Observatory (AVO) examine deposits on the lobe of the Drift Glacier with the summit of Mount Redoubt and its steaming lava dome in distance. This photo was taken during the first helicopter flight funded by the American Recovery and Reinvestment Act funds, whi...

2009-10-09

100

SAG Compensated Vibration Isolation Mount.  

National Technical Information Service (NTIS)

A sag-compensated vibration isolation mount includes a cylindrical rubber body element and a circular band extending around the body element. The band is formed from a shape-memory alloy metal which has a predetermined transition temperature. The band is ...

S. Dickinson

1993-01-01

101

Aerospace safety advisory panel  

NASA Technical Reports Server (NTRS)

This report from the Aerospace Safety Advisory Panel (ASAP) contains findings, recommendations, and supporting material concerning safety issues with the space station program, the space shuttle program, aeronautics research, and other NASA programs. Section two presents findings and recommendations, section three presents supporting information, and appendices contain data about the panel membership, the NASA response to the March 1993 ASAP report, and a chronology of the panel's activities during the past year.

1994-01-01

102

Isolation mounts scatterometry with RCWA and PML  

NASA Astrophysics Data System (ADS)

In this paper, we examine the sensitivity of scatterometry for the isolation mounts on the substrate by applying PML in RCWA. We analyze the reflectance from the silicon and resist single mount and the silicon double mounts on the silicon substrate. First, we investigate the mode convergences and the beam width dependences of reflectance. Second, we show the propagation properties of the electromagnetic fields propagating for the isolation mounts on the silicon substrate. Finally, we examine the wavelength properties of reflectance calculated by changing the beam width, the mount width and the mount height for single mount and the silicon mount positions for the double silicon mounts. Then, we understand that the scatterometry observation is possible in several decade microns beam width.

Shirasaki, Hirokimi

2014-04-01

103

Flat panels in future ground combat vehicles  

NASA Astrophysics Data System (ADS)

The efforts of the design team for the Crewman's Associate Advanced Technology Demonstration (CA ATD) and its use of advanced display concepts is discussed. This team has the responsibility of identifying future technologies with the potential for maximizing human- machine interaction for incorporation into future crew station designs for ground combat vehicles. The design process utilizes extensive user involvement in all stages. This is critical to developing systems that have complex functions, yet are simple to maintain and operate. Described are the needs which have driven the U.S. Army towards the use of flat panels. Ultimately, the army is looking at smaller, lighter, more deployable ground combat vehicles. This goal is driving individual components to have characteristics such as low weight, low power usage, and reduced volume while maintaining ruggedness and functionality. The potential applications for flat panels in ground vehicles is also discussed. The army is looking at applications for out-the-window views (virtual periscopes), multi-functional displays, and head mounted displays to accomplish its goals of designing better crew interfaces. The army's requirements in regards to the technologies that must be developed and supported by flat panel displays are also discussed in this section. In conclusion, future projections of the use of flat panels for the Crewman's Associate ATD will be outlined. Projections will be made in terms of physical numbers and promising technologies that fulfill the goals of the CAATD and achieve the approval of the user community.

Gurd, Eric D.; Forest, Coryne A.

1996-05-01

104

Vacuum thermal insulation panel  

Microsoft Academic Search

A vacuum thermal insulation panel comprises a pair of laminated plastic and aluminum sheets together with a plastic edge strip sealed to the edges of the sheets so as to define an evacuable volume in which a glass fiber mat is disposed. The insulation panel of the present invention takes advantage of the light-weight, low cost and low thermal conductivity

J. R. Young; R. M. Schreck

1984-01-01

105

Arecibo Evaluation Panel.  

National Technical Information Service (NTIS)

The activity of the Arecibo Evaluation Panel during the five years from 15 August 1962 to 14 August 1967 is briefly summarized. The Panel was formed at the request of the Advanced Research Projects Agency to assist in evaluating plans and programs for res...

R. N. Bracewell

1967-01-01

106

Microgravity Science Research Panel  

NASA Technical Reports Server (NTRS)

This document is a transcription of the Microgravity Science Research Panel's discussion about their research and about some of the contributions that they feel have been important to the field during their time with the program. The panel includes Dr. Eugene Trinh, Dr. Lawrence DeLucas, Dr. Charles Bugg, Dr. David Larson, and Dr. Simon Ostrach.

Carpenter, Bradley M.; Trinh, Eugene H.; DeLucas, Lawrence J.; Larson, David; Koss, Matthew; Ostrach, Simon

2000-01-01

107

New mineral physics panels  

NASA Astrophysics Data System (ADS)

The AGU Committee on Mineral Physics has formed itself into six panels. The committee chairman is Orson L. Anderson of the Department of Earth and Space Sciences, University of California, Los Angeles; foreign secretary is Robert Liebermann, Department of Earth and Space Sciences, State University of New York, Stony Brook. The six panels are as follows.

108

Trailer skirt panel  

US Patent & Trademark Office Database

A skirt panel is provided herein for interconnection to another abutted similar skirt panel for attachment beneath a lower, outer longitudinally-extending edge of a trailer including a rear wheel assembly of a tractor-trailer rig, thereby to provide a continuous fairing extending downwardly from the trailer. The skirt panel includes a monolithic, generally-rectangular composite reinforced thermoplastic structure, having vertical lateral side edges configured and arranged for connection to associated vertical lateral side edges of abutting similar skirt panels. This provides a longitudinally-extending fairing for extending contiguously on each side of the trailer, a front face of the thermoplastic structure being provided with a plurality of longitudinally-extending, vertically-spaced-apart arcuate protrusions. The outer face of the thermoplastic panel preferably also is provided with dimples. The reinforcing comprising a panel secured to an inner face of the skirt panel and is provided with laterally-extending means whereby abutting skirt panels are secured to one another; whereby, when said fairing is secured to a lower portion of said trailer, the fairing extends downwardly from the trailer to from 60% to 80% of the distance to the road, so that a portion of any impinging air is directed laterally around the wheels of the rear wheel bogeys to reduce the aerodynamic drag of the trailer and of the wheel assembly.

2009-08-25

109

Analysis of Panel Data  

Microsoft Academic Search

Panel data models have become increasingly popular among applied researchers due to their heightened capacity for capturing the complexity of human behavior as compared to cross-sectional or time series data models. As a consequence, richer panel data sets also have become increasingly available. This 2003 second edition is a substantial revision of the highly successful first edition of 1986. Advances

Cheng Hsiao

1986-01-01

110

Solar Panel Test Set.  

National Technical Information Service (NTIS)

The report describes the Solar Panel Test Set developed for testing solar cell panels in artificial sunlight at an equivalent sunlight intensity of 140 mW/sq.cm. The test set uses iodine-quartz (tungsten) lamps as the radiant-energy source, and the emergi...

W. E. Ray

1970-01-01

111

A passive vibration-cancelling isolation mount  

NASA Technical Reports Server (NTRS)

An analysis of an idealized passive vibration-cancelling two-terminal mount with one degree of freedom at each mechanical terminal isolating a nonrigid machine from a nonrigid foundation is presented. To evaluate a vibration-cancelling (VC) mount, its effectiveness as a function of frequency is compared with the effectiveness of both conventional and compound mounts isolating a rigid machine from a nonrigid foundation. The comparisons indicate that a carefully designed and manufactured VC mount should provide substantially greater vibration reduction at its cancellation frequency than either a conventional or compound mount having the same low frequency stiffness, i.e., stiffness at the natural frequency of the machine mount system.

Sykes, Alan O.

1987-01-01

112

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

The Aerospace Safety Advisory Panel (ASAP) provided oversight on the safety aspects of many NASA programs. In addition, ASAP undertook three special studies. At the request of the Administrator, the panel assessed the requirements for an assured crew return vehicle (ACRV) for the space station and reviewed the organization of the safety and mission quality function within NASA. At the behest of Congress, the panel formed an independent, ad hoc working group to examine the safety and reliability of the space shuttle main engine. Section 2 presents findings and recommendations. Section 3 consists of information in support of these findings and recommendations. Appendices A, B, C, and D, respectively, cover the panel membership, the NASA response to the findings and recommendations in the March 1992 report, a chronology of the panel's activities during the reporting period, and the entire ACRV study report.

1993-01-01

113

Solar energy absorbing panel  

SciTech Connect

A solar energy absorbing panel is provided which may be integrally incorporated into a conventional building structure so that it does not protrude from the normal contour of the building , and which utilizes components of the building structure as a part of the collecting apparatus to thereby minimize the cost thereof. The panel is composed of a plurality of interconnected side-by-side, generally u-shaped sections, with the adjacent sides of adjacent sections forming parallel fins which facilitate transfer of heat to air passed therealong. Also, slot means are provided at one end edge of the panel which is adapted to receive the other end edge of another like panel therein, whereby the panels may be joined in an end-to-end arrangement.

McArthur, W.H.

1981-09-01

114

Panel 5: Microbiology and Immunology Panel  

PubMed Central

Objective The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. Data Sources PubMed database of the National Library of Medicine. Review Methods Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. Conclusion Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. Implications for Practice The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media.

Murphy, Timothy F.; Chonmaitree, Tasnee; Barenkamp, Stephen; Kyd, Jennelle; Nokso-Koivisto, Johanna; Patel, Janak A.; Heikkinen, Terho; Yamanaka, Noboru; Ogra, Pearay; Swords, W. Edward; Sih, Tania; Pettigrew, Melinda M.

2014-01-01

115

Mount McLoughlin, Oregon  

NSDL National Science Digital Library

This resource about Mount McLoughlin, a steep-sided, dominantly basaltic andesite lava cone above a lower Pliocene and Pleistocene basaltic andesite shield in the Cascades, features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. The site explains that it was formerly known as Mt. Pitt or Mt. Pit, but was renamed to honor John McLoughlin, one of the most influential figures of the fur trade and settlement periods of Pacific Northwest history. Mount McLoughlin is commonly called an andesitic volcano as inferred from its steep-sided form. Links labeled 'Special Items of Interest' include information about volcanic highlights and features, points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.

116

Piezocomposite SmartPanels for active control of underwater vibration and noise  

NASA Astrophysics Data System (ADS)

Piezocomposite SmartPanels, consisting of 1-3 actuators and pressure sensors and net-shape PZT accelerometers in a large area, low profile panel, have been fabricated and evaluated. Single layer and two-layer 100 X 100 mm and 250 X 250 mm SmartPanels have been tested for actuator authority, surface displacement uniformity, sensor-actuator coupling, and surface vibration reduction. Single layer SmartPanels have demonstrated a broad band 20 dB underwater surface vibration reduction. Current development activities include electronics integration for surface mounted SmartPanels and investigation of SmartPads in hybrid active-passive vibration isolation mounts. SmartPanels draw upon PZT injection molding technology, which is used to produce cost- effective and robust 1-3 piezocomposite materials. The piezocomposites are used extensively for SonoPanel transducers in a number of sensor and actuator applications. SonoPanels are qualified for US Navy applications, based on successful completion of pressure and shock tests, and are available in sizes up to 750 X 750 mm. Applications and performance for SmartPanels and SonoPanels are descried, including multi-element arrays, velocity sensors, and underwater vibration and noise reduction devices.

Gentilman, Richard L.; Fiore, Daniel; Torri, Robert; Glynn, James

1998-06-01

117

Quaternary glaciation of Mount Everest  

NASA Astrophysics Data System (ADS)

The Quaternary glacial history of the Rongbuk valley on the northern slopes of Mount Everest is examined using field mapping, geomorphic and sedimentological methods, and optically stimulated luminescence (OSL) and 10Be terrestrial cosmogenic nuclide (TCN) dating. Six major sets of moraines are present representing significant glacier advances or still-stands. These date to >330 ka (Tingri moraine), >41 ka (Dzakar moraine), 24-27 ka (Jilong moraine), 14-17 ka (Rongbuk moraine), 8-2 ka (Samdupo moraines) and ˜1.6 ka (Xarlungnama moraine), and each is assigned to a distinct glacial stage named after the moraine. The Samdupo glacial stage is subdivided into Samdupo I (6.8-7.7 ka) and Samdupo II (˜2.4 ka). Comparison with OSL and TCN defined ages on moraines on the southern slopes of Mount Everest in the Khumbu Himal show that glaciations across the Everest massif were broadly synchronous. However, unlike the Khumbu Himal, no early Holocene glacier advance is recognized in the Rongbuk valley. This suggests that the Khumbu Himal may have received increased monsoon precipitation in the early Holocene to help increase positive glacier mass balances, while the Rongbuk valley was too sheltered to receive monsoon moisture during this time and glaciers could not advance. Comparison of equilibrium-line altitude depressions for glacial stages across Mount Everest reveals asymmetric patterns of glacier retreat that likely reflects greater glacier sensitivity to climate change on the northern slopes, possibly due to precipitation starvation.

Owen, Lewis A.; Robinson, Ruth; Benn, Douglas I.; Finkel, Robert C.; Davis, Nicole K.; Yi, Chaolu; Putkonen, Jaakko; Li, Dewen; Murray, Andrew S.

2009-07-01

118

Polishing Your Transparencies: Mounting, Masking, Overlays.  

ERIC Educational Resources Information Center

This brief guide discusses the mounting of overhead transparencies on frames, the types of mounts, the proper masking for presentation, and the use of overlays. Numerous line drawings provide the reader with a helpful visual reference. (RAO)

Jobe, Holly; Cannon, Glenn

119

A Comprehensive Plan, Mount Pleasant, Tennessee.  

National Technical Information Service (NTIS)

The Comprehensive Plan includes an analysis of Mount Pleasant's economic characteristics and the problems that exist. It considers future national trends and how they will effect Mount Pleasant in the years to come. It discusses the city's population in r...

1973-01-01

120

Mounting support for a photovoltaic module  

DOEpatents

A mounting support for a photovoltaic module is described. The mounting support includes a foundation having an integrated wire-way ledge portion. A photovoltaic module support mechanism is coupled with the foundation.

Brandt, Gregory Michael; Barsun, Stephan K.; Coleman, Nathaniel T.; Zhou, Yin

2013-03-26

121

Engineering of Head-Mounted Projective Displays  

Microsoft Academic Search

Head-mounted projective displays ~HMPD's! are a novel type of head-mounted display. A HMPD consists of a miniature projection lens mounted upon the user's head and retroreflective sheeting material placed strategically in the environment. First, the imaging concept of a HMPD is reviewed and its potential advantages and disadvantages are discussed. The design and a bench prototype implemen- tation are then

Hong Hua; Axelle Girardot; Chunyu Gao; Jannick P. Rolland

2000-01-01

122

Mount Stromlo and Siding Spring Observatories  

NASA Astrophysics Data System (ADS)

Mount Stromlo and Siding Spring Observatories (MSSSO) are the astronomicalobservatories of the Australian National University. The facilities at MountStromlo Observatory were originally established as the Commonwealth SolarObservatory which commenced operation in the Australian Capital Territory in1924. Expansion after the Second World War saw Mount Stromlo Observatory moveinto stellar astrophysic...

Murdin, P.

2003-04-01

123

Holding fixture for metallographic mount polishing  

DOEpatents

A fixture is described for holding mounted specimens for polishing, having an arm; a body attached to one end of the arm, the body having at least one flange having an opening to accommodate a mounted specimen; and a means applying pressure against the outer surface of the mounted specimen to hold the specimen in contact with the polishing surface. 3 figs.

Barth, C.H.; Cramer, C.E.

1997-12-30

124

POPOVER Review Panel report  

SciTech Connect

The POPOVER series of high explosive (HE) certification tests was conducted at the Big Explosives Experimental Facility (BEEF) in Area 4 of the Nevada Test Site (NTS). The two primary objectives of POPOVER were to certify that: (1) BEEF meets DOE requirements for explosives facilities and is safe for personnel-occupied operations during testing of large charges of conventional HE. (2) Facility structures and equipment will function as intended when subjected to the effects of these charges. After careful analysis of test results, the POPOVER Review Panel concludes that the POPOVER series met both objectives. Further details on the Review Panel`s conclusions are included in Section 7--Findings and Recommendations.

Davito, A.; Baker, C.J.; King, C.J.; Costerus, B.; Nelson, T.; Prokosch, D.; Pastrnak, J.; Grace, P.

1996-04-10

125

Rifle-mounted gunshot locator  

NASA Astrophysics Data System (ADS)

Ultra Electronics has developed a gunshot location sensor small enough to be rifle-mounted. It measures range and direction (bearing and elevation), providing an immediate benefit to the soldier who is carrying it. It is small enough to be fitted unobtrusively on a wide range of other mobile or fixed platforms. The sensor operates standalone, but can also be wirelessly networked, potentially enabling real-time plotting of live-fire contacts, which could revolutionize the commander's view of an engagement and his ability to concentrate firepower. This paper describes the technology, the results of trials, and the potential applications for such a sensor.

Wignall, Alan; Martin, John

2009-05-01

126

Mount Apatite Park, Auburn, Maine  

NSDL National Science Digital Library

This guide discusses the geology, mineralogy, and mineral collecting opportunities of the Mount Apatite quarries at Auburn, Maine. Topics include the history and occurrence of the granite pegmatites, which contain collectible specimens of apatite, tourmaline, lepidolite, and other minerals; the history of glaciation in the area; and the history of the mining industry in Auburn, an important producer of commercial feldspar in the early 1900s. There is also information for mineral collectors, including permission and access, directions, and information on the exposures and how to extract specimens from them. References and links to additonal information are included.

127

Vacuum thermal insulation panel  

SciTech Connect

A vacuum thermal insulation panel comprises a pair of laminated plastic and aluminum sheets together with a plastic edge strip sealed to the edges of the sheets so as to define an evacuable volume in which a glass fiber mat is disposed. The insulation panel of the present invention takes advantage of the light-weight, low cost and low thermal conductivity of plastic materials to form an evacuable volume into which a glass fiber insulating mat is disposed for support of the panel which is evacuated to provide improved thermal insulation. Additionally, a gas permeation barrier is employed on the edge strip of the panel to minimize gas permeation at its edges. A metal foil layer provides gas permeation protection through the large surface areas of the sheets themselves.

Young, J.R.; Schreck, R.M.

1984-04-24

128

Comprehensive Metabolic Panel  

MedlinePLUS

... Pages On This Site Apart from the Related Tests noted above, there are no other related pages on this site. Elsewhere On The Web MedlinePlus Medical Encyclopedia: Comprehensive metabolic panel » See all ...

129

BMP (Basic Metabolic Panel)  

MedlinePLUS

... Pages On This Site Apart from the Related Tests noted above, there are no other related pages on this site. Elsewhere On The Web MedlinePlus Medical Encyclopedia: Basic metabolic panel » See all ...

130

Concentrating Solar Panels.  

National Technical Information Service (NTIS)

Soliant Energy is a venture-capital-backed startup focused on bringing advanced concentrating solar panels to market. Our fundamental innovation is that we are the first company to develop a racking solar concentrator specifically for commercial rooftop a...

M. Deck

2010-01-01

131

Panel acoustic contribution analysis.  

PubMed

Formulations are derived to analyze the relative panel acoustic contributions of a vibrating structure. The essence of this analysis is to correlate the acoustic power flow from each panel to the radiated acoustic pressure at any field point. The acoustic power is obtained by integrating the normal component of the surface acoustic intensity, which is the product of the surface acoustic pressure and normal surface velocity reconstructed by using the Helmholtz equation least squares based nearfield acoustical holography, over each panel. The significance of this methodology is that it enables one to analyze and rank relative acoustic contributions of individual panels of a complex vibrating structure to acoustic radiation anywhere in the field based on a single set of the acoustic pressures measured in the near field. Moreover, this approach is valid for both interior and exterior regions. Examples of using this method to analyze and rank the relative acoustic contributions of a scaled vehicle cabin are demonstrated. PMID:23363099

Wu, Sean F; Natarajan, Logesh Kumar

2013-02-01

132

Autoimmune liver disease panel  

MedlinePLUS

... liver/kidney microsomal antibodies Anti-mitochondrial antibodies Anti-nuclear antibodies Anti-smooth muscle antibodies Sometimes the panel may also include other tests. Often immune protein levels in the blood are ...

133

Commerical Research Panel  

NASA Technical Reports Server (NTRS)

This document is a transcription of the Commercial Research Panel's discussion at 'The Spacelab Accomplishments Forum'. Dr. Stodieck, Dr. David Klaus, Dr. Weija Zhou, and Dr. Albert Sacco talk about the commercial research that has taken place on Spacelab.

Kearns, Joel K.; Stodieck, Louis; Klaus, David; Zhou, Wei-Ja; Sacco, Albert

2000-01-01

134

Medical Expenditure Panel Survey  

Cancer.gov

The Medical Expenditure Panel Survey (MEPS) is a nationally representative survey of the civilian noninstitutionalized population in the United States supported by the Agency for Healthcare Research and Quality (AHRQ). Data are collected over five rounds of in-person interviews that cover a consecutive two-year period. Each MEPS panel is a subsample of the prior year National Health Interview Survey (NHIS) respondents.

135

Panel Library And Editor  

NASA Technical Reports Server (NTRS)

Panel Library and Editor computer program is grapical-user-interface builder program for use on workstations of Silicon Graphics IRIS family. Program creates "widgets" manipulated by user. Appearance similar to X-Windows System. Used by programmers to write user-friendly mouse-driven application programs for IRIS workstations. Panel Library (v9.8) and Editor (v1.1) written in C Language and Scheme.

Raible, Eric; Tristram, David; Walatka, Pam

1992-01-01

136

Propulsion Systems Panel deliberations  

NASA Technical Reports Server (NTRS)

The Propulsion Systems Panel was established because of the specialized nature of many of the materials and structures technology issues related to propulsion systems. This panel was co-chaired by Carmelo Bianca, MSFC, and Bob Miner, LeRC. Because of the diverse range of missions anticipated for the Space Transportation program, three distinct propulsion system types were identified in the workshop planning process: liquid propulsion systems, solid propulsion systems and nuclear electric/nuclear thermal propulsion systems.

Bianca, Carmelo J.; Miner, Robert; Johnston, Lawrence M.; Bruce, R.; Dennies, Daniel P.; Dickenson, W.; Dreshfield, Robert; Karakulko, Walt; Mcgaw, Mike; Munafo, Paul M.

1993-01-01

137

Nozzle and shroud assembly mounting structure  

DOEpatents

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion. 3 figs.

Faulder, L.J.; Frey, G.A.; Nielsen, E.W.; Ridler, K.J.

1997-08-05

138

Nozzle and shroud assembly mounting structure  

DOEpatents

The present nozzle and shroud assembly mounting structure configuration increases component life and reduces maintenance by reducing internal stress between the mounting structure having a preestablished rate of thermal expansion and the nozzle and shroud assembly having a preestablished rate of thermal expansion being less than that of the mounting structure. The mounting structure includes an outer sealing portion forming a cradling member in which an annular ring member is slidably positioned. The mounting structure further includes an inner mounting portion to which a hooked end of the nozzle and shroud assembly is attached. As the inner mounting portion expands and contracts, the nozzle and shroud assembly slidably moves within the outer sealing portion.

Faulder, Leslie J. (San Diego, CA); Frey, deceased, Gary A. (late of Seattle, WA); Nielsen, Engward W. (El Cajon, CA); Ridler, Kenneth J. (San Diego, CA)

1997-01-01

139

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

During 1997, the Aerospace Safety Advisory Panel (ASAP) continued its safety reviews of NASA's human space flight and aeronautics programs. Efforts were focused on those areas that the Panel believed held the greatest potential to impact safety. Continuing safe Space Shuttle operations and progress in the manufacture and testing of primary components for the International Space Station (ISS) were noteworthy. The Panel has continued to monitor the safety implications of the transition of Space Shuttle operations to the United Space Alliance (USA). One area being watched closely relates to the staffing levels and skill mix in both NASA and USA. Therefore, a section of this report is devoted to personnel and other related issues that are a result of this change in NASA's way of doing business for the Space Shuttle. Attention will continue to be paid to this important topic in subsequent reports. Even though the Panel's activities for 1997 were extensive, fewer specific recommendations were formulated than has been the case in recent years. This is indicative of the current generally good state of safety of NASA programs. The Panel does, however, have several longer term concerns that have yet to develop to the level of a specific recommendation. These are covered in the introductory material for each topic area in Section 11. In another departure from past submissions, this report does not contain individual findings and recommendations for the aeronautics programs. While the Panel devoted its usual efforts to examining NASA's aeronautic centers and programs, no specific recommendations were identified for inclusion in this report. In lieu of recommendations, a summary of the Panel's observations of NASA's safety efforts in aeronautics and future Panel areas of emphasis is provided. With profound sadness the Panel notes the passing of our Chairman, Paul M. Johnstone, on December 17, 1997, and our Staff Assistant, Ms. Patricia M. Harman, on October 5, 1997. Other changes to the Panel composition during the past year were: the resignation of Mr. Dennis E. Fitch as a Consultant; the appointment of Mr. Roger D. Schaufele as a Consultant; and the assignment of Ms. Susan M. Smith as Staff Assistant.

1998-01-01

140

Optimization of aircraft interior panels  

NASA Technical Reports Server (NTRS)

Eight different graphite composite panels were fabricated using four different resin matrices. The resin matrices included Hercules 71775, a blend of vinylpolystyrpyridine and bismaleimide, H795, a bismaleimide, Cycom 6162, a phenolic, and PSP 6022M, a polystyrylpyridine. Graphite panels were fabricated using fabric or unidirectional tape. This report describes the processes for preparing these panels and some of their mechanical, thermal and flammability properties. Panel properties are compared with state-of-the-art epoxy fiberglass composite panels.

Kourtides, Demetrius A.; Roper, Willard D.

1986-01-01

141

Effect of panel alignment and surface finish on bond strength  

SciTech Connect

The flexural strength of bonded acrylic is tested as a function of panel alignment and bond surface finish. Bond strength was shown to be highly dependent on both parameters with only a narrow range of values yielding a high strength bond. This study was performed for the heavy water-containing acrylic vessel for the Sudbury Neutrino Observatory detector.

Wouters, J.M.; Doe, P.J. [Los Alamos National Lab., NM (United States); Baker, W.E. [New Mexico Univ., Albuquerque, NM (United States)

1991-10-01

142

Mount St. Helens: the aftermath  

SciTech Connect

During the May 18, 1980 eruption of Mount St. Helens, ash fell over a 100,000 sq mile area to the east. The Idaho studies showed that, although the ashfall altered the food chains of some forest streams, within a year they fully recovered. The effects of ashfall on lake benthic organisms are still being assessed by sediment sampling. The Montana studies reported on snow avalanche models adapted to mudflows, trophic impact of ash deposits on Montana lakes, and the volcanic ash as nutrient subsidy to sub-alpine lakes. The Oregon studies reported herring and smelt egg and larvae damage due to suspended ash. The drainage patterns in eruption debris were studied along with the filling of Columbia River berths with ash.

Flaherty, D.C.

1983-01-01

143

In Brief: Mount Wilson centennial  

NASA Astrophysics Data System (ADS)

The 60-inch reflecting telescope at Mount Wilson Observatory, in southern California, which helped scientists measure the Milky Way and determine our solar system's position within it, celebrates its 100th anniversary in December. ``The 60-inch continued the Copernican Revolution by dethroning the Sun from the center of our galaxy,'' noted observatory director Harold McAlister. The telescope, with its silver-on-glass reflectors, also established the basic design for observatory telescopes on Earth. Capable of operating in several different optical configurations, the telescope was the first one built primarily for photographic and spectrographic use. With its 5-foot-diameter mirror, the telescope was the largest in the world until 1917. The telescope is retired from active science but is made available to groups for viewing astronomical objects. The observatory was founded by astronomer George Ellery Hale under the auspices of the Carnegie Institution of Washington. For more information, visit http://www.mtwilson.edu.

Showstack, Randy

2008-11-01

144

Aerospace safety advisory panel  

NASA Technical Reports Server (NTRS)

The Aerospace Safety Advisory Panel (ASAP) monitored NASA's activities and provided feedback to the NASA Administrator, other NASA officials and Congress throughout the year. Particular attention was paid to the Space Shuttle, its launch processing and planned and potential safety improvements. The Panel monitored Space Shuttle processing at the Kennedy Space Center (KSC) and will continue to follow it as personnel reductions are implemented. There is particular concern that upgrades in hardware, software, and operations with the potential for significant risk reduction not be overlooked due to the extraordinary budget pressures facing the agency. The authorization of all of the Space Shuttle Main Engine (SSME) Block II components portends future Space Shuttle operations at lower risk levels and with greater margins for handling unplanned ascent events. Throughout the year, the Panel attempted to monitor the safety activities related to the Russian involvement in both space and aeronautics programs. This proved difficult as the working relationships between NASA and the Russians were still being defined as the year unfolded. NASA's concern for the unique safety problems inherent in a multi-national endeavor appears appropriate. Actions are underway or contemplated which should be capable of identifying and rectifying problem areas. The balance of this report presents 'Findings and Recommendations' (Section 2), 'Information in Support of Findings and Recommendations' (Section 3) and Appendices describing Panel membership, the NASA response to the March 1994 ASAP report, and a chronology of the panel's activities during the reporting period (Section 4).

1995-01-01

145

Panel methods: An introduction  

NASA Technical Reports Server (NTRS)

Panel methods are numerical schemes for solving (the Prandtl-Glauert equation) for linear, inviscid, irrotational flow about aircraft flying at subsonic or supersonic speeds. The tools at the panel-method user's disposal are (1) surface panels of source-doublet-vorticity distributions that can represent nearly arbitrary geometry, and (2) extremely versatile boundary condition capabilities that can frequently be used for creative modeling. Panel-method capabilities and limitations, basic concepts common to all panel-method codes, different choices that were made in the implementation of these concepts into working computer programs, and various modeling techniques involving boundary conditions, jump properties, and trailing wakes are discussed. An approach for extending the method to nonlinear transonic flow is also presented. Three appendices supplement the main test. In appendix 1, additional detail is provided on how the basic concepts are implemented into a specific computer program (PANAIR). In appendix 2, it is shown how to evaluate analytically the fundamental surface integral that arises in the expressions for influence-coefficients, and evaluate its jump property. In appendix 3, a simple example is used to illustrate the so-called finite part of the improper integrals.

Erickson, Larry L.

1990-01-01

146

Alternative Shear Panel Configurations for Light Wood Construction. Development, Seismic Performance, and Design Guidance  

NASA Astrophysics Data System (ADS)

Shear panels are used in light wood construction to resist lateral loads resulting from earthquakes or strong winds. These panels are typically made of wooden sheathing nailed to building frame members, but this standard panel design interferes with the installation of sheet insulation. A non-insulated shear panel conducts heat between the building interior and exterior wasting considerable amounts of energy. Several alternative shear panel designs were developed to avoid this insulation-mounting problem and sample panels were tested according to standard cyclic test protocols. One of the alternative designs consisted of diagonal steel straps nailed directly to the structural framing. Several others consisted of sheathing nailed to 2 x 4 framing then set into a larger 2 x 6 structural frame in such a way that no sheathing protruded beyond the edge of the 2 x 6 members. Also samples of industry-standard shear panels were constructed and tested in order to establish a performance baseline. Analytical models were developed to size test panels and predict panel behavior. A procedure was developed for establishing design capacities based on both test data and established baseline panel design capacity. The behavior of each panel configuration is documented and recommended design capacities are presented.

Wilcoski, James; Fischer, Chad; Allison, Tim; Malach, Kelly Jo

2002-04-01

147

Oven wall panel construction  

DOEpatents

An oven roof or wall is formed from modular panels, each of which comprises an inner fabric and an outer fabric. Each such fabric is formed with an angle iron framework and somewhat resilient tie-bars or welded at their ends to flanges of the angle irons to maintain the inner and outer frameworks in spaced disposition while minimizing heat transfer by conduction and permitting some degree of relative movement on expansion and contraction of the module components. Suitable thermal insulation is provided within the module. Panels or skins are secured to the fabric frameworks and each such skin is secured to a framework and projects laterally so as slidingly to overlie the adjacent frame member of an adjacent panel in turn to permit relative movement during expansion and contraction.

Ellison, Kenneth (20 Avondale Cres., Markham, CA); Whike, Alan S. (R.R. #1, Caledon East, both of Ontario, CA)

1980-04-22

148

Mounting and Alignment of IXO Mirror Segments  

NASA Technical Reports Server (NTRS)

A suspension-mounting scheme is developed for the IXO (International X-ray Observatory) mirror segments in which the figure of the mirror segment is preserved in each stage of mounting. The mirror, first fixed on a thermally compatible strongback, is subsequently transported, aligned and transferred onto its mirror housing. In this paper, we shall outline the requirement, approaches, and recent progress of the suspension mount processes.

Chan, Kai-Wing; Zhang, William; Evans, Tyler; McClelland, Ryan; Hong, Melinda; Mazzarella, James; Saha, Timo; Jalota, Lalit; Olsen, Lawrence; Byron, Glenn

2010-01-01

149

Optical Mounts for Cryogenic Beam Splitters  

NASA Technical Reports Server (NTRS)

Spring-loaded optical mounts maintain flatness and alinement of rigid, framed, or pellicle beam splitters over wide temperature range, despite differences in thermal expansion amoung materials. Mounts permit optical adjustments at ambient temperature even though optical system operated subsequently within few degrees of absolute zero. Mounts useful as holders for integrated-circuit master patterns, survey targets, vibrating membranes, noise- or pressure-sensing membranes, osmosis filters, and fuel-cell elements.

Rudman, A. A.

1985-01-01

150

PRSEUS Acoustic Panel Fabrication  

NASA Technical Reports Server (NTRS)

This report describes the development of a novel structural concept, Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS), that addresses the demanding fuselage loading requirements for the Hybrid Wing or Blended Wing Body (BWB) airplane configuration with regards to acoustic response. A PRSEUS panel was designed and fabricated and provided to NASA-LaRC for acoustic response testing in the Structural Acoustics Loads and Transmission (SALT) facility). Preliminary assessments of the sound transmission characteristics of a PRSEUS panel subjected to a representative Hybrid Wing Body (HWB) operating environment were completed for the NASA Environmentally Responsible Aviation (ERA) Program.

Nicolette, Velicki; Yovanof, Nicolette P.; Baraja, Jaime; Mathur, Gopal; Thrash, Patrick; Pickell, Robert

2011-01-01

151

Predicting the vibroacoustic response of satellite equipment panels.  

PubMed

Modern satellites are constructed of large, lightweight equipment panels that are strongly excited by acoustic pressures during launch. During design, performing vibroacoustic analyses to evaluate and ensure the integrity of the complex electronics mounted on the panels is critical. In this study the attached equipment is explicitly addressed and how its properties affect the panel responses is characterized. FEA and BEA methods are used to derive realistic parameters to input to a SEA hybrid model of a panel with multiple attachments. Specifically, conductance/modal density and radiation efficiency for nonhomogeneous panel structures with and without mass loading are computed. The validity of using the spatially averaged conductance of panels with irregular features for deriving the structure modal density is demonstrated. Maidanik's proposed method of modifying the traditional SEA input power is implemented, illustrating the importance of accounting for system internal couplings when calculating the external input power. The predictions using the SEA hybrid model agree with the measured data trends, and are found to be most sensitive to the assumed dynamic mass ratio (attachments/structure) and the attachment internal loss factor. Additional experimental and analytical investigations are recommended to better characterize dynamic masses, modal densities and loss factors. PMID:12656381

Conlon, S C; Hambric, S A

2003-03-01

152

Mount Meager landslide flow history  

NASA Astrophysics Data System (ADS)

Gravitational instabilities, such as landslides, avalanches, or debris flows, play a key role in erosional processes and represent one of the major natural hazards in mountainous, coastal, and volcanic regions. Despite the great amount of field, experimental and numerical work devoted to this problem, the understanding of the physical processes at work in gravitational flows is still an open issue, in particular due to the lack of observations relevant to their dynamics. In this context, the seismic signal generated by gravitational flows is a unique opportunity to obtain information on their dynamics. Indeed, as shown recently by Favreau et al., (2010), simulation of the seismic signal generated by landslides makes it possible to discriminate different flow scenarios and estimate rheological parameters. Global and regional seismic networks continuously record gravitational instabilities, so this new method will help gather new data on landslide behavior, particularly when combined with a landslide numerical modeling. Using this approach, we focus on the 6 August 2010 Mount Meager landslide: a 48.5 Mm3 rockslide-debris flow occurring in the Mount Meager Volcanic complex in the Southwest British Columbia. This landslide traveled over 12.7 km in just a few minutes time and was recorded by 25 broadband seismic stations. The time history of the forces exerted by the landslide on the ground surface was inverted from the seismic waveforms. The forcing history revealed the occurrence of a complicated initiation and showed features attributable to flow over a complicated path that included two sharp turns and runup at a valley wall barrier. To reliably interpret this signal and thus obtain detailed information about the dynamics of the landslide, we ran simulations for a range of scenarios by varying the coefficient of friction and the number, mass, and timings of subevents and compute the forces generated in each case. By comparing the results of these simulations to the forces obtained from the seismic data, we are able to reconstruct the event and better understand its dynamics in unprecedented detail.

Moretti, L.; Allstadt, K.; Mangeney, A.; Capdeville, Y.; Stutzmann, E.; Bouchut, F.

2013-12-01

153

Composite panel development at JPL  

NASA Technical Reports Server (NTRS)

Parametric computer studies can be use in a cost effective manner to determine optimized composite mirror panel designs. An InterDisciplinary computer Model (IDM) was created to aid in the development of high precision reflector panels for LDR. The materials properties, thermal responses, structural geometries, and radio/optical precision are synergistically analyzed for specific panel designs. Promising panels designs are fabricated and tested so that comparison with panel test results can be used to verify performance prediction models and accommodate design refinement. The iterative approach of computer design and model refinement with performance testing and materials optimization has shown good results for LDR panels.

Mcelroy, Paul; Helms, Rich

1988-01-01

154

Detail east panel of east truss showing rollling panels and ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Detail east panel of east truss showing rollling panels and counter weights. View south - New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Lift Bridge, Spanning Fort Point Channel, Boston, Suffolk County, MA

155

Panel Discussion III  

NASA Astrophysics Data System (ADS)

I. Hubeny Does anyone from the panel have a theme question to start with today? V. Trimble It's another one-liner: From an active galaxy meeting many years ago when people talked about spiral structure. I was reminded by Dr. Rucinski's talk of Lodewijk Woltjer's remark: ``The larger our ignorance, the stronger the magnetic field.''

Allard, F.; Batten, A.; Budding, E.; Devinney, E.; Eggleton, P.; Hatzes, A.; Hubeny, I.; Kley, W.; Lammer, H.; Linnell, A.; Trimble, V.; Wilson, R. E.

2012-04-01

156

Vacuum insulating panel  

Microsoft Academic Search

Theoretical aspects and practical possibilities for realization of a new type of thermal insulation, vacuum panel insulation (VPI), are given. From a functional point of view, it is a flat all metal Dewar flask with an array of supporting beads. They span metal foils at desired distances and limit conduction by internal, near-point contacts. Model studies and first reports show

V Nemani?

1995-01-01

157

Advanced Solar Panel Designs  

NASA Technical Reports Server (NTRS)

Solar panel designs that utilize new high-efficiency solar cells and lightweight rigid panel technologies are described. The resulting designs increase the specific power (W/kg) achievable in the near-term and are well suited to meet the demands of higher performance small satellites (smallsats). Advanced solar panel designs have been developed and demonstrated on two NASA SBIR contracts at Applied Solar. The first used 19% efficient, large area (5.5 cm x 6.5 cm) GaAs/Ge solar cells with a lightweight rigid graphite epoxy isogrid substrate configuration. A 1,445 sq cm coupon was fabricated and tested to demonstrate 60 W/kg with a high potential of achieving 80 W/kg. The second panel design used new 22% efficiency, dual-junction GaInP2/GaAs/Ge solar cells combined with a lightweight aluminum core/graphite fiber mesh facesheet substrate. A 1,445 sq cm coupon was fabricated and tested to demonstrate 105 W/kg with the potential of achieving 115 W/kg.

Ralph, E. L.; Linder, E. B.

1995-01-01

158

World Bank Inspection Panel.  

National Technical Information Service (NTIS)

The purpose of the study is simply to ensure a better understanding of the inspection function as envisaged in the resolution establishing the Panel. It will attempt to serve this purpose by shedding light in the first chapter on the circumstances which l...

I. F. I. Shihata

1994-01-01

159

17. VIEW OF MOUNTING PRESS. 200ton to mount gear and ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. VIEW OF MOUNTING PRESS. 200-ton to mount gear and wheels on axles, Baldwin Press. Jim Lumadue and Tom Morgan, operators. - Juniata Shops, Erecting Shop & Machine Shop, East of Fourth Avenue, between Fourth & Fifth Streets, Altoona, Blair County, PA

160

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report covers the activities of the Aerospace Safety Advisory Panel (ASAP) for calendar year 1998-a year of sharp contrasts and significant successes at NASA. The year opened with the announcement of large workforce cutbacks. The slip in the schedule for launching the International Space Station (ISS) created a five-month hiatus in Space Shuttle launches. This slack period ended with the successful and highly publicized launch of the STS-95 mission. As the year closed, ISS assembly began with the successful orbiting and joining of the Functional Cargo Block (FGB), Zarya, from Russia and the Unity Node from the United States. Throughout the year, the Panel maintained its scrutiny of NASA's safety processes. Of particular interest were the potential effects on safety of workforce reductions and the continued transition of functions to the Space Flight Operations Contractor. Attention was also given to the risk management plans of the Aero-Space Technology programs, including the X-33, X-34, and X-38. Overall, the Panel concluded that safety is well served for the present. The picture is not as clear for the future. Cutbacks have limited the depth of talent available. In many cases, technical specialties are 'one deep.' The extended hiring freeze has resulted in an older workforce that will inevitably suffer significant departures from retirements in the near future. The resulting 'brain drain' could represent a future safety risk unless appropriate succession planning is started expeditiously. This and other topics are covered in the section addressing workforce. The major NASA programs are also limited in their ability to plan property for the future. This is of particular concern for the Space Shuttle and ISS because these programs are scheduled to operate well into the next century. In the case of the Space Shuttle, beneficial and mandatory safety and operational upgrades are being delayed because of a lack of sufficient present funding. Likewise, the ISS has little flexibility to begin long lead-time items for upgrades or contingency planning. For example, the section on computer hardware and software contains specific findings related to required longer range safety-related actions. NASA can be proud of its accomplishments this past year, but must remain ever vigilant, particularly as ISS assembly begins to accelerate. The Panel will continue to focus on both the short- and long-term aspects of risk management and safety planning. This task continues to be made manageable and productive by the excellent cooperation the Panel receives from both NASA and its contractors. Particular emphasis will continue to be directed to longer term workforce and program planning issues as well as the immediate risks associated with ISS assembly and the initial flights of the X-33 and X-34. Section 2 of this report presents specific findings and recommendations generated by ASAP activities during 1998. Section 3 contains more detailed information in support of these findings and recommendations. Appendix A is a current roster of Panel members, consultants, and staff. Appendix B contains NASA's response to the findings and recommendations from the 1997 ASAP Annual Report. Appendix C details the fact-finding activities of the Panel in 1998. During the year, Mr. Richard D. Blomberg was elected chair of the Panel and Vice Admiral (VADM) Robert F Dunn was elected deputy chair. VADM Bernard M. Kauderer moved from consultant to member. Mr. Charles J. Donlan retired from the Panel after many years of meritorious service. Ms. Shirley C. McCarty and Mr. Robert L. ('Hoot') Gibson joined the Panel as consultants.

1999-01-01

161

Mount Fuji [CI] Line Survey  

NASA Astrophysics Data System (ADS)

We have constructed the Mount Fuji submillimeter-wave telescope at Nishiyasugawara (alt. 3725 m) near the summit of Mt. Fuji (alt. 3774 m). Thanks to the excellent condition of Mt. Fuji, we have successfully carried out the [CI] survey toward more than 40 square degrees of sky, including Orion MC, Taurus MC, Rosetta MC, DR 15, DR 21, NGC 1333, NGC 2264, W 3, W 44, W 51, L 134, ?-Oph. Our [CI] survey have revealed that the [CI] 492 GHz emission widely extends to the molecular clouds. The spatial and velocity structures of the [CI] 492 GHz emission resemble those of 13CO J=1--0 in many molecular clouds, implying that [CI] 492 GHz and 13CO J=1--0 are emitted from the same gas. The column density of C^0 linearly correlates with that of CO up to high A_V, suggesting that C^0 exist in the deep interior of molecular clouds. In several regions, we have found that the distributions of C^0 and CO are different from each other. The C^0-rich area is found in the Hieles' cloud 2. The C^+/CO/C^0 configuration is found in DR 15, ?-Oph, M 17, Orion KL, and NGC 1333. These results indicate that an origin of C^0 is unrelated with the photodissociation process. We discuss the observed C^0 distributions in relation to the non-equilibrium chemistry.

Sakai, Takeshi; Yamamoto, Satoshi

2005-06-01

162

Advanced solar panel designs  

NASA Technical Reports Server (NTRS)

Solar panel designs that utilize new high-efficiency solar cells and lightweight rigid panel technologies are described. The resulting designs increase the specific power (W/kg) achievable in the near-term and are well suited to meet the demands of higher performance small satellites (smallsats). Advanced solar panel designs have been developed and demonstrated on two NASA SBIR contracts at Applied Solar. The first used 19% efficient, large area (5.5 cm x 6.5 cm) GaAs/Ge solar cells with a lightweight rigid graphite epoxy isogrid substrate configuration. A 1,445 cm(exp 2) coupon was fabricated and tested to demonstrate 60 W/kg with a high potential of achieving 80 W/kg. The second panel design used new 22% efficiency, dual junction GaInP2/GaAs/Ge solar cells combined with a lightweight aluminum core/graphite fiber mesh facesheet substrate. A 1,445 cm(exp 2) coupon was fabricated and tested to demonstrate 105 W/kg with the potential of achieving 115 W/kg. This paper will address the construction details for the GaAs/isogrid and dual-junction GaAs/carbon mesh panel configurations. These are ultimately sized to provide 75 Watts and 119 Watts respectively for smallsats or may be used as modular building blocks for larger systems. GaAs/isogrid and dual-junction GaAs/carbon mesh coupons have been fabricated and tested to successfully demonstrate critical performance parameters and results are also provided here.

Ralph, E. L.; Linder, E. B.

1996-01-01

163

Design of Fiber Reinforced Foam Sandwich Panels for Large Ares V Structural Applications  

NASA Technical Reports Server (NTRS)

The preliminary design of three major structural components within NASA's Ares V heavy lift vehicle using a novel fiber reinforced foam composite sandwich panel concept is presented. The Ares V payload shroud, interstage, and core intertank are designed for minimum mass using this panel concept, which consists of integral composite webs separated by structural foam between two composite facesheets. The HyperSizer structural sizing software, in conjunction with NASTRAN finite element analyses, is used. However, since HyperSizer does not currently include a panel concept for fiber reinforced foam, the sizing was performed using two separate approaches. In the first, the panel core is treated as an effective (homogenized) material, whose properties are provided by the vendor. In the second approach, the panel is treated as a blade stiffened sandwich panel, with the mass of the foam added after completion of the panel sizing. Details of the sizing for each of the three Ares V components are given, and it is demonstrated that the two panel sizing approaches are in reasonable agreement for thinner panel designs, but as the panel thickness increases, the blade stiffened sandwich panel approach yields heavier panel designs. This is due to the effects of local buckling, which are not considered in the effective core property approach.

Bednarcyk, Brett A.; Arnold, Steven M.; Hopkins, Dale A.

2010-01-01

164

A flexible cruciform journal bearing mount  

NASA Technical Reports Server (NTRS)

Flexible mount achieves low roll, pitch and yaw stiffnesses while maintaining high radial stiffness by holding bearing pad in fixed relationship to deep web cruciform member and holding this member in fixed relationship to bearing support. This mount has particular application in small, high performance gas turbines.

Frost, A. E.; Geiger, W. A.

1973-01-01

165

Novel surface mount LED ammonia sensors  

Microsoft Academic Search

Low-cost colorimetric ammonia gas sensors have been developed using a pair of surface mount light emitting diodes (LEDs), ammonia specific chemochromic reagent and a simple PIC microcontroller circuit. The key feature of this sensor is the use of an LED, rather than a photodiode, for light detection. The use of surface mount diodes means a significant reduction in the final

Roderick L. Shepherd; William S. Yerazunis; King Tong Lau; Dermot Diamond

2004-01-01

166

Flexible pivot mount eliminates friction and hysteresis  

NASA Technical Reports Server (NTRS)

Flexible steel pivot mount, suspended by flat vertical beryllium copper springs, is capable of rotation, free of hysteresis and starting friction. Mount requires no lubrication, is made in varying sizes, and is driven with either dc torque motor or mechanical linkage.

Highman, C. O.

1970-01-01

167

Mount Rainier: An Interactive Learning Module  

NSDL National Science Digital Library

This module studies the hazards posed by Mount Rainier, a mainland volcano near Seattle, Washington. The lessons explain the geographical context of Mount Rainier, how people prepare for the worst near the volcano (including hazard area identification and emergency and evacuation plans), hazards from eruption (tephra fall, lava flow, and pyroclastic flow), and hazards without eruption (sector collapse, glacial outburst flooding, and lahars).

Carsell, Kim

168

Optimized superstationary anastigmatic mounts of concave gratings.  

PubMed

Two subfamilies of concave grating superstationary anastigmatic mounts that provide minimum chromatic aberrations are described. The obtained approximate formulas can be used to design flat-field spectrographs and multi/demultiplexers for optical communication networks. Two specific mounts and their performance are presented. PMID:18259300

Churin, E G; Bayvel, P; Midwinter, J E

1997-07-20

169

Three-point spherical mirror mount  

DOEpatents

A three-point spherical mirror mount for use with lasers is disclosed. The improved mirror mount is adapted to provide a pivot ring having an outer surface with at least three spaced apart mating points to engage an inner spherical surface of a support housing.

Cutburth, R.W.

1984-01-23

170

Three-point spherical mirror mount  

DOEpatents

A three-point spherical mirror mount for use with lasers is disclosed. The improved mirror mount is adapted to provide a pivot ring having an outer surface with at least three spaced apart mating points to engage an inner spherical surface of a support housing.

Cutburth, Ronald W. (Bulls Gap, TN)

1990-01-01

171

Helmet-Mounted Liquid-Crystal Display  

NASA Technical Reports Server (NTRS)

Helmet-mounted binocular display provides text and images for almost any wearer; does not require fitting for most users. Accommodates users from smallest interpupillary distance to largest. Two liquid-crystal display units mounted in helmet. Images generated seen from any position head can assume inside helmet. Eyes directed to position for best viewing.

Smith, Steve; Plough, Alan; Clarke, Robert; Mclean, William; Fournier, Joseph; Marmolejo, Jose A.

1991-01-01

172

Evaluation of Space Debris Impact on Spacecraft Structure Panels  

NASA Astrophysics Data System (ADS)

Mission-critical components of unmanned spacecraft, such as electronic equipment, are often mounted on the interior surfaces of structure panels. This study investigated debris impact damage to structure panels to assess the degree to which they can protect components. If debris perforates a structure panel but is stopped by the equipment chassis, the impact will not affect the probability of mission success. The ballistic limit of the chassis therefore equals to the damage limit of the structure panel. To estimate this damage limit, hypervelocity impact experiments were conducted on sets of a honeycomb sandwich panel, simulating a structure panel, fixed directly to an aluminum alloy plate, simulating an equipment chassis, with no gap between the two. Debris environment models show that alumina debris particles smaller than 1 mm in diameter are dominant in low earth orbit, and the average impact velocity is over 10 km/sec. However, advanced techniques are required to accelerate small solid projectiles to such speeds, so steel projectiles at 6 km/sec were used to simulate the impact pressure caused by alumina impacting at 9 km/sec. The depths of the resulting impact craters on the chassis plates were measured with an optical microscope, and the damage limit equation of the structure panels was derived from the crater depths. The calculated damage limit equation was compared with the SRL ballistic limit equations. As a result, it was found that the equation obtained in this study showed safety results but was too robust. The stand-off distance between honeycomb sandwich panel and aluminum alloy plate was effective to decrease depths of craters in the plate.

Higashide, Masumi; Onose, Naomi; Hasegawa, Sunao

173

LCD Panels: The Electronic Wonder.  

ERIC Educational Resources Information Center

Describes Liquid Crystal Display (LCD) panels and their use in the classroom. Topics discussed include active versus passive matrix panels; the number of pixels; projectors, including transmissive or reflective overhead projectors; costs; and vendors that supply LCDs. (LRW)

Anderson, Glenn

1994-01-01

174

Laser optical element mounting arrangement and method  

SciTech Connect

This patent describes a method of mounting and sealing an optical element of a laser to a mounting support member of the laser comprising the steps of providing an optical element mounting surface the the support member with a smooth surface which is sufficiently smooth to form a vacuum seal with a surface of the optical element, the vacuum seal preventing at least to a large and acceptable degree, movement of gases through the seal between the optical element and the mounting support member as a result of a gas pressure differential across the seal during operation of the laser and contacting the surface of the optical element with the mounting surface of the support member, at ambient temperature to form the vacuum seal between the surfaces without the use of a sealant between the surfaces, and therein the vacuum seal between the surfaces can be broken and remade without use of a sealant.

Whitehouse, D.R.

1988-10-11

175

GPS Attitude Determination Using Deployable-Mounted Antennas  

NASA Technical Reports Server (NTRS)

The primary objective of this investigation is to develop a method to solve for spacecraft attitude in the presence of potential incomplete antenna deployment. Most research on the use of the Global Positioning System (GPS) in attitude determination has assumed that the antenna baselines are known to less than 5 centimeters, or one quarter of the GPS signal wavelength. However, if the GPS antennas are mounted on a deployable fixture such as a solar panel, the actual antenna positions will not necessarily be within 5 cm of nominal. Incomplete antenna deployment could cause the baselines to be grossly in error, perhaps by as much as a meter. Overcoming this large uncertainty in order to accurately determine attitude is the focus of this study. To this end, a two-step solution method is proposed. The first step uses a least-squares estimate of the baselines to geometrically calculate the deployment angle errors of the solar panels. For the spacecraft under investigation, the first step determines the baselines to 3-4 cm with 4-8 minutes of data. A Kalman filter is then used to complete the attitude determination process, resulting in typical attitude errors of 0.50.

Osborne, Michael L.; Tolson, Robert H.

1996-01-01

176

Flank instability of Mount Etna  

NASA Astrophysics Data System (ADS)

Mount Etna geodetic and satellite monitoring systems have been recording surface deformation characterized by an instability of the E flank of the volcano for about 20 years. The seaward sliding of the E flank is observed either during summit and flank eruptions but also during quiescent recharging phases. Many investigations have not yet been able to give answers to the following questions: i) is the sliding affecting a thin or thick layer of the volcanic/sedimentary cover? ii) is this movement occurring along a sliding plane or is it accommodated by anelastic deformation? iii) if a sliding plane exists, where is it located? iv) if an anelastic material is responsible for the deformation, is it represented by pleistocenic clays or by the incoherent part of the flysh layers? v) which rheology best represents this behavior? vi) what is the role played by gravity? Unfortunately, indirect investigations such as tomographic, stratigraphic, geoelectric or seismic reflection studies have not been able to provide a unique interpretation of volcanic edifice structure. Our purpose here is to select the most reliable features evidenced by recent studies and build a finite element model able to reproduce the basic patterns of the observed surface deformation. The geometry of the model includes both topography and the top of the sedimentary basement, together with a synthetic reconstruction of the internal layering constrained by geology and seismic tomography. Rheological parameters of the Etnean lithotypes are constrained by laboratory experiments conducted in the framework of FLANK INGV-DPC project. First we study a series of 2D models trying to understand the role of gravity, internal layering, rheology and sliding plane. Then we move to a more realistic and more complex 3D model including also the tectonic structures that may play a relevant role accommodating the observed eastward movements of the E flank. We study the effects of magma accumulation in a isotropic spherical cavity (0.5 km radius) located at almost 5 km b.s.l. northwest of the summit craters, according to the results of numerous recently published papers. Among the results obtained, we want to remark that a significant contribution to increase the deformation in the E sector of Mount Etna may be due to the asymmetrical distribution of elastic parameters related to the presence of a high velocity body underneath summit craters imaged by seismic tomography. Moreover, when yield stress dependent rheologies are taken into account we observe that the initialization of stress in the model is very important. According to different assumptions about the initial stress distribution we predict different results characterized by a total or partial relaxation of the differential stress due to the gravity load. In the first case, only small effects on the computations are observed while in the latter case the flank collapse continuously overestimating the observed deformation. These preliminary results suggest that model assumptions severely influence the assessment of the physical mechanisms that may lead to flank instability.

Cianetti, Spina; Casarotti, Emanuele; Giunchi, Carlo

2010-05-01

177

Clinical Space Medicine Panel  

NASA Technical Reports Server (NTRS)

The practice of space medicine is diverse. It includes routine preventive medical care of astronauts and pilots, the development of inflight medical capability and training of flight crews as well as the preflight, inflight, and postflight medical assessment and monitoring. The Johnson Space Center Medical Operations Branch is a leader in the practice of space medicine. The papers presented in this panel will demonstrate some of the unique aspects of space medicine.

Baisden, Denise L.; Billica, Roger (Technical Monitor)

2000-01-01

178

National Reading Panel  

NSDL National Science Digital Library

On April 13, 2000, the National Reading Panel (NRP) released the results of "the largest, most comprehensive evidenced-based review ever conducted of research on how children learn reading." Established in response to a 1997 congressional directive, the NRP is composed of "leading scientists in reading research, representatives of colleges of education, reading teachers, educational administrators, and parents." The NRP Homepage offers background information, additional documents, and related links.

179

An improved loopless mounting method for cryocrystallography  

NASA Astrophysics Data System (ADS)

Based on a recent loopless mounting method, a simplified loopless and bufferless crystal mounting method is developed for macromolecular crystallography. This simplified crystal mounting system is composed of the following components: a home-made glass capillary, a brass seat for holding the glass capillary, a flow regulator, and a vacuum pump for evacuation. Compared with the currently prevalent loop mounting method, this simplified method has almost the same mounting procedure and thus is compatible with the current automated crystal mounting system. The advantages of this method include higher signal-to-noise ratio, more accurate measurement, more rapid flash cooling, less x-ray absorption and thus less radiation damage to the crystal. This method can be extended to the flash-freeing of a crystal without or with soaking it in a lower concentration of cryoprotectant, thus it may be the best option for data collection in the absence of suitable cryoprotectant. Therefore, it is suggested that this mounting method should be further improved and extensively applied to cryocrystallographic experiments.

Qi, Jian-Xun; Jiang, Fan

2010-01-01

180

Decoupling analysis for a powertrain mounting system with a combination of hydraulic mounts  

NASA Astrophysics Data System (ADS)

The existing torque roll axis(TRA) decoupling theories for a powertrain mounting system assume that the stiffness and viscous damping properties are constant. However, real-life mounts exhibit considerable spectrally varying stiffness and damping characteristics, and the influence of the spectrally-varying properties of the hydraulic mounts on the powertrain system cannot be ignored. To overcome the deficiency, an analytical quasi-linear model of the hydraulic mount and the coupled properties of the powertrain and hydraulic mounts system are formulated. The influence of the hydraulic mounts on the TRA decoupling of a powertrain system is analytically examined in terms of eigensolutions, frequency, and impulse responses, and then a new analytical axiom is proposed based on the TRA decoupling indices. With the experimental setup of a fixed decoupler hydraulic mount in the context of non-resonant dynamic stiffness testing procedure, the quasi-linear model of the hydraulic mount is verified by comparing the predictions with the measurement. And the quasi-linear formulation of the coupled system is also verified by comparing the frequency responses with the numerical results obtained by the direct inversion method. Finally, the mounting system with a combination of hydraulic mounts is redesigned in terms of the stiffness, damping and mount locations by satisfying the new axiom. The frequency and time domain results of the redesigned system demonstrate that the torque roll axis of the redesigned powertrain mounting system is indeed decoupled in the presence of hydraulic mounts (given oscillating torque or impulsive torque excitation). The proposed research provides an important basis and method for the research on a powertrain system with spectrally-varying mount properties, especially for the TRA decoupling.

Hu, Jinfang; Chen, Wuwei; Huang, He

2013-07-01

181

Analysis of Wind Forces on Roof-Top Solar Panel  

NASA Astrophysics Data System (ADS)

Structural loads on solar panels include forces due to high wind, gravity, thermal expansion, and earthquakes. International Building Code (IBC) and the American Society of Civil Engineers are two commonly used approaches in solar industries to address wind loads. Minimum Design Loads for Buildings and Other Structures (ASCE 7-02) can be used to calculate wind uplift loads on roof-mounted solar panels. The present study is primarily focused on 2D and 3D modeling with steady, and turbulent flow over an inclined solar panel on the flat based roof to predict the wind forces for designing wind management system. For the numerical simulation, 3-D incompressible flow with the standard k-? was adopted and commercial CFD software ANSYS FLUENT was used. Results were then validated with wind tunnel experiments with a good agreement. Solar panels with various aspect ratios for various high wind speeds and angle of attacks were modeled and simulated in order to predict the wind loads in various scenarios. The present study concluded to reduce the strong wind uplift by designing a guide plate or a deflector before the panel.

Panta, Yogendra; Kudav, Ganesh

2011-03-01

182

An orientable solar panel system for nanospacecraft  

NASA Astrophysics Data System (ADS)

An orientable deployed solar array system for 1-5 kg weight nanospacecraft is described, enhancing the achievable performance of these typically power-limited systems. The system is based on a deployable solar panel system, previously developed with cooperation between Laboratorio di Sistemi Aerospaziali of University of Roma “la Sapienza” and the company IMT (Ingegneria Marketing Tecnologia). The system proposed is a modular one, and suitable in principle for the 1U, 2U and 3U standard Cubesat bus, even if the need for three axis attitude stabilization makes it typically preferred for 3U Cubesats. The size of each solar panel is the size of a lateral Cubesat surface. A single degree of freedom maneuvering capability is given to the deployed solar array, in order to follow the apparent motion of the sun as close as possible, given the mission requirements on the spacecraft attitude. Considerable effort has been devoted to design the system compatible with the Cubesat standard, being mounted outside on the external spacecraft structure, without requiring modifications on the standard prescriptions. The small available volume is the major constraint, which forces to use miniaturized electric motor technology. The system design trade-off is discussed, leading to the selection of an architecture based on two independently steerable solar array wings.

Santoni, Fabio; Piergentili, Fabrizio; Candini, Gian Paolo; Perelli, Massimo; Negri, Andrea; Marino, Michele

2014-08-01

183

Large thermal protection system panel  

NASA Technical Reports Server (NTRS)

A protective panel for a reusable launch vehicle provides enhanced moisture protection, simplified maintenance, and increased temperature resistance. The protective panel includes an outer ceramic matrix composite (CMC) panel, and an insulative bag assembly coupled to the outer CMC panel for isolating the launch vehicle from elevated temperatures and moisture. A standoff attachment system attaches the outer CMC panel and the bag assembly to the primary structure of the launch vehicle. The insulative bag assembly includes a foil bag having a first opening shrink fitted to the outer CMC panel such that the first opening and the outer CMC panel form a water tight seal at temperatures below a desired temperature threshold. Fibrous insulation is contained within the foil bag for protecting the launch vehicle from elevated temperatures. The insulative bag assembly further includes a back panel coupled to a second opening of the foil bag such that the fibrous insulation is encapsulated by the back panel, the foil bag, and the outer CMC panel. The use of a CMC material for the outer panel in conjunction with the insulative bag assembly eliminates the need for waterproofing processes, and ultimately allows for more efficient reentry profiles.

Myers, Franklin K. (Inventor); Weinberg, David J. (Inventor); Tran, Tu T. (Inventor)

2003-01-01

184

Two degree of freedom camera mount  

NASA Technical Reports Server (NTRS)

A two degree of freedom camera mount. The camera mount includes a socket, a ball, a first linkage and a second linkage. The socket includes an interior surface and an opening. The ball is positioned within an interior of the socket. The ball includes a coupling point for rotating the ball relative to the socket and an aperture for mounting a camera. The first and second linkages are rotatably connected to the socket and slidably connected to the coupling point of the ball. Rotation of the linkages with respect to the socket causes the ball to rotate with respect to the socket.

Ambrose, Robert O. (Inventor)

2003-01-01

185

Mount Shasta Wilderness study area, California  

SciTech Connect

The Mount Shasta Wilderness study area was surveyed in 1975. It lies wholly on the slopes and summit area of Mount Shasta and consists almost entirely of the products of geologically young volcanism. Small deposits of volcanic cinders and pumice are present. The volcanic system of Mount Shasta is judged to have probable resource potential for geothermal energy but that potential is least within the wilderness study area boundaries. Because any geothermal energy resource beneath the volcano would lie at considerable depths, exploration or development would be most likely at lower altitudes on the gentler slopes outside the study area.

Christiansen, R.L.; Tuchek, E.T.

1984-01-01

186

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This Annual Report of the Aerospace Safety Advisory Panel (ASAP) presents results of activities during calendar year 2001. The year was marked by significant achievements in the Space Shuttle and International Space Station (ISS) programs and encouraging accomplishments by the Aerospace Technology Enterprise. Unfortunately, there were also disquieting mishaps with the X-43, a LearJet, and a wind tunnel. Each mishap was analyzed in an orderly process to ascertain causes and derive lessons learned. Both these accomplishments and the responses to the mishaps led the Panel to conclude that safety and risk management is currently being well served within NASA. NASA's operations evidence high levels of safety consciousness and sincere efforts to place safety foremost. Nevertheless, the Panel's safety concerns have never been greater. This dichotomy has arisen because the focus of most NASA programs has been directed toward program survival rather than effective life cycle planning. Last year's Annual Report focused on the need for NASA to adopt a realistically long planning horizon for the aging Space Shuttle so that safety would not erode. NASA's response to the report concurred with this finding. Nevertheless, there has been a greater emphasis on current operations to the apparent detriment of long-term planning. Budget cutbacks and shifts in priorities have severely limited the resources available to the Space Shuttle and ISS for application to risk-reduction and life-extension efforts. As a result, funds originally intended for long-term safety-related activities have been used for operations. Thus, while safety continues to be well served at present, the basis for future safety has eroded. Section II of this report develops this theme in more detail and presents several important, overarching findings and recommendations that apply to many if not all of NASA's programs. Section III of the report presents other significant findings, recommendations and supporting material applicable to specific program areas. Appendix A presents a list of Panel members. Appendix B contains the reaction of the ASAP to NASA's response to the calendar year 2000 findings and recommendations. In accordance with a practice started last year, this Appendix includes brief narratives as well as classifications of the responses as 'open,' 'closed,' or 'continuing.' Appendix C details the Panel's activities during the reporting period.

2002-01-01

187

X-band slotted array test panel and test fixture  

NASA Technical Reports Server (NTRS)

Data from the development of the X-band slotted array test band, X-band array test fixture, and the X/L-band test fixture for the Support Instrumentation Requirements program are documented. An X-band array was built and installed with an existing L-band module in such a way as to permit antenna pattern measurements in a series of nonplanar configurations that might simulate the thermal effects of nonuniform solar illumination on the array in a space environment. This was accomplished with eight X-band subpanels mounted adjacently on individually adjusted supports which were then co-mounted to a larger frame which served to mount and physically distort the existing L-band module. The L-band module is a heavy electrical breadboard array section that was fabricated to demonstrate the performance capabilities of a slotted waveguide array at L-band frequencies. Drawings, mechanical analysis, and descriptions of test configurations are presented.

1979-01-01

188

Vibration dissipation mount for motors or the like  

DOEpatents

A vibration dissipation mount which permits the mounting of a motor, generator, or the like such that the rotatable shaft thereof passes through the mount and the mount permits the dissipation of self-induced and otherwise induced vibrations wherein the mount comprises a pair of plates having complementary concave and convex surfaces, a semi-resilient material being disposed therebetween.

Small, Thomas R. (Brookeville, MD)

1987-01-01

189

Broadband transmission noise reduction of smart panels featuring piezoelectric shunt circuits and sound-absorbing material.  

PubMed

The possibility of a broadband noise reduction of piezoelectric smart panels is experimentally studied. A piezoelectric smart panel is basically a plate structure on which piezoelectric patches with electrical shunt circuits are mounted and sound-absorbing material is bonded on the surface of the structure. Sound-absorbing material can absorb the sound transmitted at the midfrequency region effectively while the use of piezoelectric shunt damping can reduce the transmission at resonance frequencies of the panel structure. To be able to reduce the sound transmission at low panel resonance frequencies, piezoelectric damping using the measured electrical impedance model is adopted. A resonant shunt circuit for piezoelectric shunt damping is composed of resistor and inductor in series, and they are determined by maximizing the dissipated energy through the circuit. The transmitted noise-reduction performance of smart panels is tested in an acoustic tunnel. The tunnel is a square cross-sectional tube and a loudspeaker is mounted at one side of the tube as a sound source. Panels are mounted in the middle of the tunnel and the transmitted sound pressure across panels is measured. When an absorbing material is bonded on a single plate, a remarkable transmitted noise reduction in the midfrequency region is observed except for the fundamental resonance frequency of the plate. By enabling the piezoelectric shunt damping, noise reduction is achieved at the resonance frequency as well. Piezoelectric smart panels incorporating passive absorbing material and piezoelectric shunt damping is a promising technology for noise reduction over a broadband of frequencies. PMID:12243188

Kim, Jaehwan; Lee, Joong-Kuen

2002-09-01

190

Mounting Technology Based on Bump Technology,  

National Technical Information Service (NTIS)

One of Fuji Electric's characteristic technologies is bump technology. The paper outlines the features andd processes of the mounting technology based on the bump technology such as solder bumping, gold bumping, and packaging, and introduces some products...

A. Amana H. Shirahata O. Hirohashi

1988-01-01

191

Hyperostosis frontalis interna mimicking Mount Fuji sign.  

PubMed

We report an interesting case of 'Hyperostosis frontalis interna' in a 73-yr-old female whose MRI pictures mimics the CT appearance of 'Mount Fuji sign' in tension pneumocephalus a neurological emergency. PMID:21751633

Prakash, B; Pranesh, M B; Parimalam, N; Harish Kumar, R

2011-03-01

192

Mount Sinai CCOP - National Cancer Institute  

Cancer.gov

The Mount Sinai Community Clinical Oncology Program (MSCCOP) is a nonprofit community-based program committed to providing novel clinical research to cancer treatment patients and to healthy individuals who may be at risk for cancer.

193

Shoe Repair Shop, Trailer-Mounted.  

National Technical Information Service (NTIS)

The document provides test methods and techniques necessary to determine the technical performance and safety characteristics of trailer-mounted shoe repair shops, and their associated tools and equipment. (Author)

1969-01-01

194

Clothing Repair Shop, Trailer-Mounted.  

National Technical Information Service (NTIS)

The document provides test methods and techniques to determine the technical performance and safety characteristics of trailer-mounted clothing repair shops, and their associated tools and equipment. (Author)

1969-01-01

195

Shoe Repair Shop, Trailer-Mounted.  

National Technical Information Service (NTIS)

The document provides test metrology and test techniques to determine to what degree trailer-mounted shoe repair shops, and their associated tools and equipment, perform the mission as described in qualitative materiel requirements (QMR's), small developm...

1969-01-01

196

Reliability Analysis of Surface Mount Technology (SMT).  

National Technical Information Service (NTIS)

This report indoctrinates the reader with the understanding of what is involved and necessary in designing and assessing the reliability of surface mount products. Deterministic methods were used to identify the primary design and environmental drivers an...

C. A. Myers K. K. Chakrabarti D. H. Merlino E. G. Palmer E. F. Pello

1993-01-01

197

Reliability Assessment of Surface Mount Technology (SMT).  

National Technical Information Service (NTIS)

This report documents an in-house study that was conducted in order to assess the current reliability problems associated with surface mount technology (SMT). Specific areas investigated included failure modes, design guidelines, reliability prediction te...

G. A. Bivens

1988-01-01

198

High frequency testing of rubber mounts.  

PubMed

Rubber and fluid-filled rubber engine mounts are commonly used in automotive and aerospace applications to provide reduced cabin noise and vibration, and/or motion accommodations. In certain applications, the rubber mount may operate at frequencies as high as 5000 Hz. Therefore, dynamic stiffness of the mount needs to be known in this frequency range. Commercial high frequency test machines are practically nonexistent, and the best high frequency test machine on the market is only capable of frequencies as high as 1000 Hz. In this paper, a high frequency test machine is described that allows test engineers to study the high frequency performance of rubber mounts at frequencies up to 5000 Hz. PMID:12071247

Vahdati, Nader; Saunders, L Ken Lauderbaugh

2002-04-01

199

History and hazards of Mount Rainier, Washington  

USGS Publications Warehouse

Mount Rainier is an active volcano that first erupted about half a million years ago. Because of Rainier's great height (14,410 feet above sea level) and northerly location, glaciers have cut deeply into its lavas, making it appear deceptively older than it actually is. Mount Rainier is known to have erupted as recently as in the 1840s, and large eruptions took place as recently as about 1,000 and 2,300 years ago.

Sisson, Thomas W.

1995-01-01

200

Volcanic hazards at Mount Shasta, California  

USGS Publications Warehouse

The eruptions of Mount St. Helens, Washington, in 1980 served as a reminder that long-dormant volcanoes can come to life again. Those eruptions, and their effects on people and property, also showed the value of having information about volcanic hazards well in advance of possible volcanic activity. This pamphlet about Mount Shasta provides such information for the public, even though the next eruption may still be far in the future.

Crandell, Dwight R.; Nichols, Donald R.

1989-01-01

201

Stationary anastigmatic mounts of concave gratings.  

PubMed

The general equations for parameters of concave grating mounts that provide stationary and superstationary astigmatism at the wavelength of correction are derived for the first time, to the best of our knowledge. These can be used to design grating multi/demultiplexers for wavelength-division multiplexed optical communication systems and high-resolution, narrow-band spectrographs. Important special cases of stationary anastigmatic mounts and their performance are presented. PMID:18253362

Churin, E G; Bayvel, P; Stavdas, A; Midwinter, J E; Hill, A M

1997-05-20

202

Mount Rainier: living with perilous beauty  

USGS Publications Warehouse

Mount Rainier is an active volcano reaching more than 2.7 miles (14,410 feet) above sea level. Its majestic edifice looms over expanding suburbs in the valleys that lead to nearby Puget Sound. USGS research over the last several decades indicates that Mount Rainier has been the source of many volcanic mudflows (lahars) that buried areas now densely populated. Now the USGS is working cooperatively with local communities to help people live more safely with the volcano.

Scott, Kevin M.; Wolfe, Edward W.; Driedger, Carolyn L.

1998-01-01

203

Motorized control for mirror mount apparatus  

DOEpatents

A motorized control and automatic braking system for adjusting mirror mount apparatus is disclosed. The motor control includes a planetary gear arrangement to provide improved pitch adjustment capability while permitting a small packaged design. The motor control for mirror mount adjustment is suitable for laser beam propagation applications. The brake is a system of constant contact, floating detents which engage the planetary gear at selected between-teeth increments to stop rotation instantaneously when the drive motor stops.

Cutburth, Ronald W. (Tracy, CA)

1989-01-01

204

Raster graphic helmet-mounted display study  

NASA Technical Reports Server (NTRS)

A design of a helmet mounted display system is presented, including a design specification and development plan for the selected design approach. The requirements for the helmet mounted display system and a survey of applicable technologies are presented. Three helmet display concepts are then described which utilize lasers, liquid crystal display's (LCD's), and subminiature cathode ray tubes (CRT's), respectively. The laser approach is further developed in a design specification and a development plan.

Beamon, William S.; Moran, Susanna I.

1990-01-01

205

Plate-fin panel heat exchanger and panel components thereof  

SciTech Connect

A plate-fin panel for a heat exchanger may be either formed as an aluminum extrusion or fabricated from a corrugated metal sheet sandwiched between two flat metal sheets. The extruded aluminum version may be clad with protective sheet metal jackets made of, or coated with, a corrosion resistant Cu-Ni alloy. Individual panel sections can be joined together by tongue and groove engagement to obtain a total desired panel width if available extrusion press or rolling mill capacity is insufficient. The plate-fin panels are assembled into slotted headering plates, and a layer of synthetic plastics potting compound seals dissimilar metal joints against electrolytic corrosion as well as leakage and provides sufficient adhesive strength to reduce or eliminate the need for welding the panels to the headers. Mechanical brush or hydraulic jet apparatus is capable of continuously or intermittently cleaning slime or encrustations from all panel surfaces exposed to seawater.

Heronemus, W.E.

1985-02-05

206

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report covers the activities of the Aerospace Safety Advisory Panel (ASAP) for calendar year 1998-a year of sharp contrasts and significant successes at NASA. The year opened with the announcement of large workforce cutbacks. The slip in the schedule for launching the International Space Station (ISS) created a 5-month hiatus in Space Shuttle launches. This slack period ended with the successful and highly publicized launch of the STS-95 mission. As the year closed, ISS assembly began with the successful orbiting and joining of the Functional Cargo Block (FGB), Zarya, from Russia and the Unity Node from the United States. Throughout the year, the Panel maintained its scrutiny of NASAs safety processes. Of particular interest were the potential effects on safety of workforce reductions and the continued transition of functions to the Space Flight Operations Contractor. Attention was also given to the risk management plans of the Aero-Space Technology programs, including the X-33, X-34, and X-38. Overall, the Panel concluded that safety is well served for the present. The picture is not as clear for the future. Cutbacks have limited the depth of talent available. In many cases, technical specialties are "one deep." The extended hiring freeze has resulted in an older workforce that will inevitably suffer significant departures from retirements in the near future. The resulting "brain drain" could represent a future safety risk unless appropriate succession planning is started expeditiously. This and other topics are covered in the section addressing workforce. In the case of the Space Shuttle, beneficial and mandatory safety and operational upgrades are being delayed because of a lack of sufficient present funding. Likewise, the ISS has little flexibility to begin long lead-time items for upgrades or contingency planning.

1999-01-01

207

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

The results of the Panel's activities are presented in a set of findings and recommendations. Highlighted here are both improvements in NASA's safety and reliability activities and specific areas where additional gains might be realized. One area of particular concern involves the curtailment or elimination of Space Shuttle safety and reliability enhancements. Several findings and recommendations address this area of concern, reflecting the opinion that safety and reliability enhancements are essential to the continued successful operation of the Space Shuttle. It is recommended that a comprehensive and continuing program of safety and reliability improvements in all areas of Space Shuttle hardware/software be considered an inherent component of ongoing Space Shuttle operations.

1992-01-01

208

Solar energy panel  

SciTech Connect

This patent describes a solar panel. It comprises: a main body portion and a pair of caps in a mating arrangement at the opposite ends of the main body portion. The main body portion comprises an integrated sheet formed from a pair of spaced skins separated by a series of uniformly spaced parallel ribs running the full length of the two skins, each pair of spaced ribs defining a channel for the flow of fluid. The body portion is disposed within the caps, and has a series of adjacent channels.

Sherwood, D.A.

1990-02-06

209

Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This report presents the results of the Aerospace Safety Advisory Panel (ASAP) activities during 2002. The format of the report has been modified to capture a long-term perspective. Section II is new and highlights the Panel's view of NASA's safety progress during the year. Section III contains the pivotal safety issues facing NASA in the coming year. Section IV includes the program area findings and recommendations. The Panel has been asked by the Administrator to perform several special studies this year, and the resulting white papers appear in Appendix C. The year has been filled with significant achievements for NASA in both successful Space Shuttle operations and International Space Station (ISS) construction. Throughout the year, safety has been first and foremost in spite of many changes throughout the Agency. The relocation of the Orbiter Major Modifications (OMMs) from California to Kennedy Space Center (KSC) appears very successful. The transition of responsibilities for program management of the Space Shuttle and ISS programs from Johnson Space Center (JSC) to NASA Headquarters went smoothly. The decision to extend the life of the Space Shuttle as the primary NASA vehicle for access to space is viewed by the Panel as a prudent one. With the appropriate investments in safety improvements, in maintenance, in preserving appropriate inventories of spare parts, and in infrastructure, the Space Shuttle can provide safe and reliable support for the ISS for the foreseeable future. Indications of an aging Space Shuttle fleet occurred on more than one occasion this year. Several flaws went undetected in the early prelaunch tests and inspections. In all but one case, the problems were found prior to launch. These incidents were all handled properly and with safety as the guiding principle. Indeed, launches were postponed until the problems were fully understood and mitigating action could be taken. These incidents do, however, indicate the need to analyze the Space Shuttle certification criteria closely. Based on this analysis, NASA can determine the need to receritfy the vehicles and to incorporate more stringent inspections throughout the process to minimize launch schedule impact. A highly skilled and experience workforce will be increasingly important for safe and reliable operations as the Space Shuttle vehicles and infrastructure continue to age.

2002-01-01

210

Head-mounted workstation displays for airborne reconnaissance applications  

NASA Astrophysics Data System (ADS)

Aircraft reconnaissance operators need to access increasing amounts of information to perform their job effectively. Unfortunately, there is no excess weight, space or power capacity in most airborne platforms for the installation of additional display surfaces. Head mounted workstation displays solve these weight, space and power problems and mitigate information overload by providing a user-friendly interface to displayed information. Savings can be tremendous for large platforms. Over 18 kW of power and over 5,000 pounds could be saved on each Rivet Joint or AWACS platform. Even small platforms such as the E-2C or UAV ground control stations benefit from removal of large, heavy CRT or LCD displays. In addition, head mounted workstation displays provide an increased capability for collaborative mission planning and reduce motion-induced nausea. Kaiser Electronics has already designed and demonstrated a prototype system, VIEWTM, that addresses the needs of the airborne workstation operator. This system is easily reconfigured for multiple tasks and can be designed as a portable workstation for use anywhere within the aircraft (especially for maintenance or supervisory roles). We have validated the VIEWTM design with hundreds of user trials within the airborne reconnaissance community. Adopting such a display system in reconnaissance aircraft will gain significant benefits such as longer on-station time, increased operational altitude and improved operator performance.

Browne, Michael P.

1998-09-01

211

Design status of heavy ion injector program  

Microsoft Academic Search

Design and development of a sixteen beam, heavy ion injector is in progress at Los Alamos National Laboratory (LANL) to demonstrate the injector technology for the High Temperature Experiment (HTE) proposed by Lawrence Berkeley Laboratory. The injector design provides for individual ion sources mounted to a support plate defining the sixteen beam array. The beamlets are electrostatically accelerated through a

E. O. Ballard; E. A. Meyer; H. L. Rutkowski; F. W. Van Haaften

1985-01-01

212

Microgap flat panel display  

DOEpatents

A microgap flat panel display which includes a thin gas-filled display tube that utilizes switched X-Y "pixel" strips to trigger electron avalanches and activate a phosphor at a given location on a display screen. The panel utilizes the principal of electron multiplication in a gas subjected to a high electric field to provide sufficient electron current to activate standard luminescent phosphors located on an anode. The X-Y conductive strips of a few micron widths may for example, be deposited on opposite sides of a thin insulating substrate, or on one side of the adjacent substrates and function as a cathode. The X-Y strips are separated from the anode by a gap filled with a suitable gas. Electrical bias is selectively switched onto X and Y strips to activate a "pixel" in the region where these strips overlap. A small amount of a long-lived radioisotope is used to initiate an electron avalanche in the overlap region when bias is applied. The avalanche travels through the gas filled gap and activates a luminescent phosphor of a selected color. The bias is adjusted to give a proportional electron multiplication to control brightness for given pixel.

Wuest, Craig R. (Danville, CA)

1998-01-01

213

Microgap flat panel display  

DOEpatents

A microgap flat panel display is disclosed which includes a thin gas-filled display tube that utilizes switched X-Y ``pixel`` strips to trigger electron avalanches and activate a phosphor at a given location on a display screen. The panel utilizes the principal of electron multiplication in a gas subjected to a high electric field to provide sufficient electron current to activate standard luminescent phosphors located on an anode. The X-Y conductive strips of a few micron widths may for example, be deposited on opposite sides of a thin insulating substrate, or on one side of the adjacent substrates and function as a cathode. The X-Y strips are separated from the anode by a gap filled with a suitable gas. Electrical bias is selectively switched onto X and Y strips to activate a ``pixel`` in the region where these strips overlap. A small amount of a long-lived radioisotope is used to initiate an electron avalanche in the overlap region when bias is applied. The avalanche travels through the gas filled gap and activates a luminescent phosphor of a selected color. The bias is adjusted to give a proportional electron multiplication to control brightness for given pixel. 6 figs.

Wuest, C.R.

1998-12-08

214

A Wide Field-of-view Head Mounted Projective Display using Hyperbolic Half-silvered Mirrors  

Microsoft Academic Search

ABSTRACT The development ,of a ,wide ,field-of-view (FOV) head mounted display (HMD) has been a technological ,challenge for decades. Previous HMDs tackled this problem,using multiple display units (tiling) or multiple,curved mirrors. The former approach,tends to beexpensive and heavy, whereas the latter approach tends to suffer from image ,distortion and a small ,exit pupil. In order to provide a wide FOV

Kiyoshi Kiyokawa

2007-01-01

215

Heat pipe thermal conditioning panel  

NASA Technical Reports Server (NTRS)

The technology involved in designing and fabricating a heat pipe thermal conditioning panel to satisfy a broad range of thermal control system requirements on NASA spacecraft is discussed. The design specifications were developed for a 30 by 30 inch heat pipe panel. The fundamental constraint was a maximum of 15 gradient from source to sink at 300 watts input and a flux density of 2 watts per square inch. The results of the performance tests conducted on the panel are analyzed.

Saaski, E. W.

1973-01-01

216

Taking the Heat: Handling the Shuttle's RCC Wing Panels  

NASA Technical Reports Server (NTRS)

Innovative inspection technology was developed to inspect the Reinforced Carbon-Carbon (RCC) wing panels on the vehicle, thus eliminating need to remove/reinstall all 44 RCC panels for inspections per processing flow. Manually holding inspection tools up to the RCC panels was a 3-person job with high risk of personnel injury and flight hardware damage. To further enhance ergonomics, reduce personnel/flight hardware risks, and improve repeatability, an inspection cart and fixture were constructed to physically secure the instruments for Inspectors during 652 inspection points per flow. The electric lift used to handle RCCs was also utilized to raise the heavy, bulky inspection equipment up to the wing leading edge.

Stegles, Katrine S.

2008-01-01

217

Modal analysis of gear housing and mounts  

NASA Technical Reports Server (NTRS)

Dynamic finite element analysis of a real gear housing is presented. The analysis was conducted for the housing without the rotating components (gears, shafts, and bearings). Both rigid and flexible mounting conditions for the gear housing are considered in this analysis. The flexible support simulates the realistic mounting condition on a rotorcraft, and the rigid one is analyzed for comparison purposes. The effect of gear housing stiffeners is also evaluated. The results indicate that the first six natural modes of the flexibly mounted gear housing in the 0 to 200 Hz range correspond to the translational and rotational rigid body vibration modes of the housing. Above this range, the housing plate elastic modes begin to occur. In the case of the rigid mount, only the housing plate elastic modes are observed which are verified by modal analysis experiments. Parametric studies show that the housing plate stiffeners and rigid mounts tend to increase most of the natural frequencies, the lower ones being affected the most.

Lim, Teik C.; Singh, RAJ.; Zakrajsek, James J.

1989-01-01

218

Optics Alignment Panel  

NASA Technical Reports Server (NTRS)

The Optics Alignment Panel (OAP) was commissioned by the HST Science Working Group to determine the optimum alignment of the OTA optics. The goal was to find the position of the secondary mirror (SM) for which there is no coma or astigmatism in the camera images due to misaligned optics, either tilt or decenter. The despace position was reviewed of the SM and the optimum focus was sought. The results of these efforts are as follows: (1) the best estimate of the aligned position of the SM in the notation of HDOS is (DZ,DY,TZ,TY) = (+248 microns, +8 microns, +53 arcsec, -79 arcsec), and (2) the best focus, defined to be that despace which maximizes the fractional energy at 486 nm in a 0.1 arcsec radius of a stellar image, is 12.2 mm beyond paraxial focus. The data leading to these conclusions, and the estimated uncertainties in the final results, are presented.

Schroeder, Daniel J.

1992-01-01

219

Planar electroluminescent panel techniques  

NASA Technical Reports Server (NTRS)

Investigations of planar electroluminescent multipurpose displays with latch-in memory are described. An 18 x 24 in. flat, thin address panel with elements spacing of 0.100 in. was constructed which demonstrated essentially uniform luminosity of 3-5 foot lamberts for each of its 43200 EL cells. A working model of a 4-bit EL-PC (electroluminescent photoconductive) electrooptical decoder was made which demonstrated the feasibility of this concept. A single-diagram electroluminescent display device with photoconductive-electroluminescent latch-in memory was constructed which demonstrated the conceptual soundness of this principle. Attempts to combine these principles in a single PEL multipurpose display with latch-in memory were unsuccessful and were judged to exceed the state-of-the-art for close-packed (0.10 in. centers) photoconductor-electroluminescent cell assembly.

Kerr, C.; Kell, R. E.

1973-01-01

220

Space deployable domed solar concentrator with foldable panels and hinge therefor  

NASA Technical Reports Server (NTRS)

A space deployable solar energy concentrator is formed of a dome-shaped arrangement of compactly stowable flat panel segments mounted on a collapsible, space-deployable support structure of interconnected linear components. The support structure is comprised of a plurality of tensioned, curvilinear edge strips which extend in a radial direction from a prescribed vertex of a surrounding umbrella-like framework of radially extending rib members. Between a respective pair of radially-extending, curvilinear edge strips an individual wedge-shaped panel section is formed of a plurality of multi-segment lens panel strips each of which is supported in tension between the pair of edge strips by a pair of circumferentially extending catenary cord members connected to a pair of ribs of the surrounding umbrella-like framework. A respective lens panel strip is comprised of a plurality of flat, generally rectangular-shaped, energy-directing panels arranged side-by-side in the circumferential direction of the dome. Adjacent panels are interconnected by flexible U-shaped hinges which overlap opposing edges of adjacent panels and engage respective cylindrically-shaped, load distribution bars that slide within the flexible hinges. Because each U-shaped hinge is flexible, it is permitted to shift in the circumferential direction of the panel section to facilitate stowage and deployment of the dome.

Grayson, Fred G. (Inventor); Miller, Warren H. (Inventor); Sturgis, James D. (Inventor)

1989-01-01

221

Third-generation Rowland holographic mounting.  

PubMed

Holographic gratings using aspheric blanks and/or aberrated laser recording sources are most often required to achieve high spectral resolution over a large spectral range. We propose a configuration derived from the optimized holographic Rowland mounting, where the grating is recorded by the interference of two aberrated wave fronts diffracted from concave holographic gratings. These two auxiliary gratings are recorded with laser point sources, and the three blanks are spherical, which is well suited to the severe far-UV constraints on shape and polishing. In addition to the correction of astigmatism, coma C(1), and spherical aberration S(1) given by the optimized Rowland mounting, this mounting cancels, at least at one point of the spectrum, coma C(2) and spherical aberrations S(2) and S(3). PMID:20706498

Duban, M

1991-10-01

222

Mounting system for optical frequency reference cavities  

NASA Technical Reports Server (NTRS)

A technique for reducing the vibration sensitivity of laser-stabilizing optical reference cavities is based upon an improved design and mounting method for the cavity, wherein the cavity is mounted vertically. It is suspended at one plane, around the spacer cylinder, equidistant from the mirror ends of the cavity. The suspension element is a collar of an extremely low thermal expansion coefficient material, which surrounds the spacer cylinder and contacts it uniformly. Once the collar has been properly located, it is cemented in place so that the spacer cylinder is uniformly supported and does not have to be squeezed at all. The collar also includes a number of cavities partially bored into its lower flat surface, around the axial bore. These cavities are support points, into which mounting base pins will be inserted. Hence the collar is supported at a minimum of three points.

Notcutt, Mark (Inventor); Hall, John L. (Inventor); Ma, Long-Sheng (Inventor)

2008-01-01

223

Ball mounting fixture for a roundness gage  

DOEpatents

A ball mounting fixture for a roundness gage is disclosed. The fixture includes a pair of chuck assemblies oriented substantially transversely with respect to one another and mounted on a common base. Each chuck assembly preferably includes a rotary stage and a wobble plate affixed thereto. A ball chuck affixed to each wobble plate is operable to selectively support a ball to be measured for roundness, with the wobble plate permitting the ball chuck to be tilted to center the ball on the axis of rotation of the rotary stage. In a preferred embodiment, each chuck assembly includes a vacuum chuck operable to selectively support the ball to be measured for roundness. The mounting fixture enables a series of roundness measurements to be taken with a conventional rotating gagehead roundness instrument, which measurements can be utilized to determine the sphericity of the ball.

Gauler, Allen L. (Los Alamos, NM); Pasieka, Donald F. (Los Alamos, NM)

1983-01-01

224

Ball mounting fixture for a roundness gage  

DOEpatents

A ball mounting fixture for a roundness gage is disclosed. The fixture includes a pair of chuck assemblies oriented substantially transversely with respect to one another and mounted on a common base. Each chuck assembly preferably includes a rotary stage and a wobble plate affixed thereto. A ball chuck affixed to each wobble plate is operable to selectively support a ball to be measured for roundness, with the wobble plate permitting the ball chuck to be tilted to center the ball on the axis of rotation of the rotary stage. In a preferred embodiment, each chuck assembly includes a vacuum chuck operable to selectively support the ball to be measured for roundness. The mounting fixture enables a series of roundness measurements to be taken with a conventional rotating gagehead roundness instrument, which measurements can be utilized to determine the sphericity of the ball. 6 figs.

Gauler, A.L.; Pasieka, D.F.

1983-11-15

225

An Integrated Cyber Panel System  

Microsoft Academic Search

The DARPA Cyber Panel program has funded research in defending mission-critical information systems from strategic coordinated attacks. This research spans many areas including novel sensors, alert correlation and reduction, visual correlation, mission impact assessment, and response. This paper describes the integration of Cyber Panel technologies from the different areas into an advanced cyber defense system and the demonstration of that

Laura S. Tinnel; O. Sami Saydjari; Joshua W. Haines

2003-01-01

226

Panel Bed Filter. Final Report.  

National Technical Information Service (NTIS)

Studies were undertaken to test the filtration performance of the panel bed filter at 300 exp 0 F in a laboratory unit; to test puffback cleaning of the filter in a tall panel representing a single element of a commercial design; to study the filtration p...

K. C. Lee I. Rodon M. S. Wu R. Pfeffer A. M. Squires

1977-01-01

227

Mounting an EUV Schwarzschild microscope lens  

NASA Astrophysics Data System (ADS)

A 21x Schwarzschild microscope lens for the EUV spectral range with a numerical aperture of 0.2 was designed and fabricated. The mechanical design of the lens had to comply with high requirements on surface figure amounting to 0.4 nm r.m.s. error for both mirrors. An optimized mirror mount was developed which is based on solid state hinges. In particular, gravity load, intrinsic stresses of the multilayer reflective coating as well as mounting forces and possibilities for mirror adjustment had to be considered. To provide a completely hydro-carbon free design the hinges were connected to the mirror by flux-less soldering.

Peschel, Thomas; Banse, Henrik; Damm, Christoph; Eberhardt, Ramona

2005-09-01

228

Trying to Breathe on Mount Everest  

NSDL National Science Digital Library

At high altitudes, Earth's atmosphere is much thinner than it is at sea level. Mountain climbers trying to reach the highest peaks have to overcome a lack of oxygen. Mount Everest, the highest point in the world, seems to be at the limit of human capabilities. This video segment, adapted from a NOVA television broadcast, describes the symptoms of mountain sickness (oxygen deprivation) and shows how climbers ascending Mount Everest combat mountain sickness. The segment is three minutes thirty-four seconds in length.

229

Predicted and measured strain responses of isotropic panels to base excitation  

NASA Technical Reports Server (NTRS)

The accuracy of classical linear theory for predicting acceleration and strain for cantilevered and Clamped-Free-Clamped-Free (C-F-C-F) panels excited through the base is studied. Aluminum, steel and titanium plates of various dimensions and thicknessess were vibration tested, using a broadband random signal applied through a shaker mounting fixture. The strains were measured at 9 locations on the cantilevered panels and at 5 locations on the C-F-C-F panels. Predictions were based on the Ritz method. The measured accelerations of the base were input to the analysis for the forcing function. Comparisons between predicted and measured strain acceleration spectra were within an average error of 20 percent for both the cantilevered and C-F-C-F panels.

Lyle, Karen H.; Leatherwood, Jack D.; Daniels, Edward F.

1988-01-01

230

7 CFR 2902.19 - Composite panels.  

Code of Federal Regulations, 2010 CFR

...ENERGY POLICY AND NEW USES,DEPARTMENT OF... § 2902.19 Composite panels. (a...2) Acoustical composite panels. Engineered...products designed for use as structural and...specifications require the use of biobased composite panels....

2009-01-01

231

7 CFR 2902.19 - Composite panels.  

Code of Federal Regulations, 2010 CFR

...ENERGY POLICY AND NEW USES, DEPARTMENT OF... § 2902.19 Composite panels. (a...2) Acoustical composite panels. Engineered...products designed for use as structural and...specifications require the use of biobased composite panels....

2010-01-01

232

Lightweight, self-evacuated insulation panels  

NASA Technical Reports Server (NTRS)

Multilayer insulation of prefabricated panels is developed for cryogenic storage tanks. System utilizes panels of aluminized Mylar separated by sheets of low conductivity polyurethane foam. Panels are self-evacuated by cryopumping of gaseous carbon dioxide at time of use.

Dengler, R. P.; Niendorf, L. R.; Nies, G. E.; Perkins, P. J., Jr.

1970-01-01

233

76 FR 3677 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC 20506...Coordinator, Panel Operations, National Endowment for the Arts. [FR Doc....

2011-01-20

234

76 FR 23845 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC 20506...Coordinator, Panel Operations, National Endowment for the Arts. [FR Doc....

2011-04-28

235

Optimisation for surface mount placement machines  

Microsoft Academic Search

Optimisation of feeder setup and component placement sequence are very important to the efficiency of surface mount placement machines. Much works have been conducted to solve this problem. However, the technological characteristics of the placement machine influences the nature of the planning problems to be solved and the formulation of the associated models. As a result, little consensus exists as

Masri Ayob; Peter Cowling; Graham Kendall

2002-01-01

236

Cardiothoracic Surgery at The Mount Sinai Hospital  

Microsoft Academic Search

Beginning in the early years of the twentieth century, there has been a continuing record of significant contributions made by Mount Sinai physicians to the surgical management of thoracic and cardiovas- cular pathology. The availability of intratracheal anesthesia, a method developed at this institution, was the sine qua non which made it possible for surgeons to perform thoracic, and later

ROBERT S. LITWAK

237

Electro-optic component mounting device.  

National Technical Information Service (NTIS)

A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aper...

M. E. Gruchalla

1993-01-01

238

Bearing-Mounting Concept Accommodates Thermal Expansion  

NASA Technical Reports Server (NTRS)

Pins or splines allow radial expansion without slippage. Design concept for mounting rotary bearing accommodates differential thermal expansion between bearing and any structure(s) to which bearing connected. Prevents buildup of thermal stresses by allowing thermal expansion to occur freely but accommodating expansion in such way not to introduce looseness. Pin-in-slot configuration also maintains concentricity.

Nespodzany, Robert; Davis, Toren S.

1995-01-01

239

Mount St. Helens, May 18, 1980  

NSDL National Science Digital Library

This GIF image is part of the U.S. Geological Survey's Cascades Volcano Observatory website, which includes pictures (archived and real-time), written reports, seismic data, and other materials on volcanology, including a glossary and links to other relevant sites. These images show Mount St. Helens while it was erupting on May 18th, 1980.

240

Thermally Compensated Fiber Bragg Grating Mount.  

National Technical Information Service (NTIS)

A thermally compensated fiber Bragg grating package is used with a fiber optic sensor. The package includes a Bragg grating mount connected at each end of a sensor mandrel. An optical fiber is wound around the sensor mandrel and a fiber portion having a B...

G. H. Ames

2007-01-01

241

Fixture For Mounting A Pressure Sensor  

NASA Technical Reports Server (NTRS)

Fixture for mounting pressure sensor in aerodynamic model simplifies task of removal and replacement of sensor in event sensor becomes damaged. Makes it unnecessary to dismantle model. Also minimizes any change in aerodynamic characteristics of model in event of replacement. Removable pressure sensor installed in fixture in wall of model. Wires from sensor pass through channel under surface.

Cagle, Christopher M.

1995-01-01

242

Shock absorbing mount for electrical components  

NASA Technical Reports Server (NTRS)

A shock mount for installing electrical components on circuit boards is described. The shock absorber is made of viscoelastic material which interconnects the electrical components. With this system, shocks imposed on one component of the circuit are not transmitted to other components. A diagram of a typical circuit is provided.

Dillon, R. F., Jr.; Mayne, R. C. (inventors)

1975-01-01

243

SSM-Peilien Kiinnitys (Mounting of SSM's).  

National Technical Information Service (NTIS)

A step by step description of how to mount SSM's (Second Surface Mirrors) on the space instruments is presented. Experiences of the first SSM implementation are described. The Soho satellite has in its payload, an instrument ERNE, which has a radiation wi...

J. Pohjonen

1993-01-01

244

Fixture for mounting small parts for processing  

DOEpatents

A fixture for mounting small parts, such as fusion target spheres or microelectronic components. A glass stalk is drawn and truncated near its tip. The truncated end of the glass stalk is dipped into silicone rubber forming an extending streamer. After the rubber cures for approximately 24 hours, a small part is touched to the streamer, and will be held securely throughout processing.

Foreman, Larry R. (2456 36th St., Los Alamos, NM 87544) [2456 36th St., Los Alamos, NM 87544; Gomez, Veronica M. (Rte. 5 Box 283, Santa Fe, NM 87501) [Rte. 5 Box 283, Santa Fe, NM 87501; Thomas, Michael H. (Rte. 3-193-1, Espanola, NM 87532) [Rte. 3-193-1, Espanola, NM 87532

1990-01-01

245

Vibration mounts for noise and vibration control  

SciTech Connect

Isolating noise and vibration is of major importance in engine applications whether on board ship or land. Ulstein Bergen, for instance, has virtually standardized on Metalastik D Series mounts for its range of lean-burn, gas engines used in power generation and cogeneration plants. In the largest engine installations, the Metalastik suspension system can carry as much as 47 tons, total weight. The system is designed to isolate the forces generated by a three megawatt engine able to develop full power within 10 seconds of starting. In setups of this size, as many as 24 mounts are arranged underneath the baseplate of the power unit. Metalastik recently announced an entirely new and innovative mounting for marine applications. The new Cushymount K mounting incorporates four separate rubber/metal spring elements housed between top and bottom iron castings. The design combines three-way control of engine movement with relatively large deflection in the rubber. The new design is claimed to be robust and easy to install by means of four bolt holes on the top and bottom castings. Other recommended applications include compressors, exhaust gas silencers, refrigeration/air-conditioning plant and similar ancillary equipment. 2 figs.

Mullins, P.

1995-04-01

246

Performance of PV panels for solar energy conversion at the South Pole  

NASA Astrophysics Data System (ADS)

Expanding research facilities at the Amundson-Scott South pole station require increased electric power generation. Presently, electric power generation is by diesel generators using the JP8 fuel. As the station is accessible only for a short supply period during the austral summer, there are limitations upon the supply of fuel for power generation. This makes it necessary to seriously consider the use of the renewable energy sources. Although there is no sunlight for six months in the year, abundant solar energy is available during the remaining 6 months because of the clear skies, the clarity of air and the low humidity at the south pole. As the buildings at the south pole are built either without windows or with only porthole type windows, large areas on the walls and the roof are available for mounting the photovoltaic (PV) panels. In addition there is unlimited space around the station for constructing a PV panel 'farm'. In this paper four types of PV panels are evaluated; the 2-axis tracking panels, vertical 1-axis tracking panels, fixed vertical panels on the walls of buildings and mounted outdoors, and fixed horizontal panels on the roofs of the buildings. Equations are developed for the power output in KW/sq. ft and annual energy in kWh/sq. ft for each type of panel. The equations include the effects of the inclination of the sun above the horizon, the movement of the sun around the horizon, the direct, reflected and diffused components of the solar radiation, the characteristics of the solar cells and the types of dc/ac inverters used to interface the output of the cells with the existing ac power. A conceptual design of a 150-kW PV generation system suitable for the south pole is also discussed in this paper.

Peeran, Syed M.

247

Investigation of articulated panel dynamics  

NASA Astrophysics Data System (ADS)

An articulated panel dynamics experiment to evaluate present analysis and ground test methods as well as damping effectiveness is proposed. The experiment uses an existing panel design which was extensively analyzed and tested. These data provide a firm basis for evaluating the adequacy of panel analysis and ground test methodology. The key issues for future large space structure panel designs are addressed: the critical launch transient and vibroacoustic loading; the deployment analysis adequacy including air and gravitational effects; and the orbital resonant frequencies and mode shapes of deployed panel assemblies. By using an existing mature design that was thoroughly tested, the effort can focus on correlation of actual flight results with existing predictions. A second panel assembly incorporating passive damping is proposed to provide a direct measure of damped panel benefits that can be obtained. These benefits include: reduced launch loads and responses; and highly damped deployed modes. Existing space-qualified viscoelastic epoxy, in combination with composite materials or an alternate more effective damping material, will be used.

Stahle, C. V., Jr.

1984-01-01

248

Aerospace Safety Advisory Panel  

NASA Astrophysics Data System (ADS)

This report provides findings, conclusions and recommendations regarding the National Space Transportation System (NSTS), the Space Station Freedom Program (SSFP), aeronautical projects and other areas of NASA activities. The main focus of the Aerospace Safety Advisory Panel (ASAP) during 1988 has been monitoring and advising NASA and its contractors on the Space Transportation System (STS) recovery program. NASA efforts have restored the flight program with a much better management organization, safety and quality assurance organizations, and management communication system. The NASA National Space Transportation System (NSTS) organization in conjunction with its prime contractors should be encouraged to continue development and incorporation of appropriate design and operational improvements which will further reduce risk. The data from each Shuttle flight should be used to determine if affordable design and/or operational improvements could further increase safety. The review of Critical Items (CILs), Failure Mode Effects and Analyses (FMEAs) and Hazard Analyses (HAs) after the Challenger accident has given the program a massive data base with which to establish a formal program with prioritized changes.

1989-03-01

249

78 FR 74174 - Humanities Panel Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...NATIONAL FOUNDATION ON THE ARTS AND THE HUMANITIES Humanities Panel Advisory Committee AGENCY: National Endowment for the Humanities. ACTION: Notice of Charter Renewal for Humanities Panel Advisory...

2013-12-10

250

Acoustic fatigue and sound transmission characteristics of a ram composite panel design  

NASA Technical Reports Server (NTRS)

An experimental study to determine the acoustic fatigue characteristics of a flat multi-layered structural panel is described. The test panel represented a proposed design for the outer skin of a research application module to be housed within the space shuttle orbiter vehicle. The test specimen was mounted in one wall of the Wyle 100,000 cu ft reverberation room and exposed to a broadband acoustic environment having an overall level of 145 db. The test panel was exposed to nine separate applications of the acoustic environment, each application consisting of 250 seconds duration. Upon completion of the ninth test run, the specimen was exposed to a simulated micrometeoroid impact near the panel center. One additional test run of 250 seconds duration was then performed to complete the overall simulation of 50 flight missions. The experimental results show that no significant fatigue damage occurred until the test specimen was exposed to a simulated micrometeoroid impact. The intermediate foam layer forming the core of the test specimen suffered considerable damage due to this impact, causing a marked variation in the dynamic characteristics of the overall test panel. During the final application of the acoustic environment, the strain and acceleration response spectra showed considerable variation from those spectra obtained prior to impact of the panel. Fatigue damage from acoustic loading however, was limited to partial de-bonding around the edges of the composite panel.

Cockburn, J. A.; Chang, K. Y.; Kao, G. C.

1972-01-01

251

NCI DEA - President's Cancer Panel  

Cancer.gov

National Institutes of Health, National Cancer Institute, Division of Extramural Activities - Home Page Skip to Main Content Home Funding Advisory Consumer Guides FAQs & Glossary Awarded Research Division of Extramural Activities President's Cancer Panel Site

252

MEDICAL EXPENDITURE PANEL SURVEY (MEPS)  

EPA Science Inventory

The Medical Expenditure Panel Survey, or MEPS as it is commonly called, is the third (and most recent) in a series of national probability surveys conducted by AHRQ on the financing and utilization of medical care in the United States....

253

Exascale Workshop Panel Report Meeting  

SciTech Connect

The Exascale Review Panel consists of 12 scientists and engineers with experience in various aspects of high-performance computing and its application, development, and management. The Panel hear presentations by several representatives of the workshops and town meetings convened over the past few years to examine the need for exascale computation capability and the justification for a U.S. Department of Energy (DOE) program to develop such capability. This report summarizes information provided by the presenters and substantial written reports to the Panel in advance of the meeting in Washington D.C. on January 19-20, 2010. The report also summarizes the Panel's conclusions with regard to the justification of a DOE-led exascale initiative.

Khaleel, Mohammad A.

2010-07-01

254

Lightweight graphite/polyimide panels  

NASA Technical Reports Server (NTRS)

Panels are constructed of honeycombed polyimide/graphite core covered with thin face sheet of same material. Fabrication is based on extension of thin-gage graphite technology and modification of glass filament polyimide honeycomb techniques.

Poesch, J. G.; Merlette, J. B.

1973-01-01

255

PRSEUS Panel Fabrication Final Report  

NASA Technical Reports Server (NTRS)

NASA and the Boeing Company have been working together under the Environmentally Responsible Aviation Project to develop stitched unitized structure for reduced weight, reduced fuel burn and reduced pollutants in the next generation of commercial aircraft. The structural concept being evaluated is PRSEUS (Pultruded Rod Stitched Efficient Unitized Structure). In the PRSEUS concept, dry carbon fabric, pultruded carbon rods, and foam are stitched together into large preforms. Then these preforms are infused with an epoxy resin into large panels in an out-of-autoclave process. These panels have stiffeners in the length-wise and width-wise directions but contain no fasteners because all stiffeners are stitched to the panel skin. This document contains a description of the fabrication of panels for use in the 30-foot-long Multi-Bay Box test article to be evaluated at NASA LaRC.

Linton, Kim A.; Velicki, Alexander; Hoffman, Krishna; Thrash, Patrick; Pickell, Robert; Turley, Robert

2014-01-01

256

Deposits of large volcanic debris avalanches at Mount St. Helens and Mount Shasta volcanoes  

Microsoft Academic Search

Large volcanic debris avalanches are among the world's largest mass movements. The rockslide-debris avalanche of the May 18, 1980, eruption of Mount St. Helens produced a 2.8 km³ deposit and is the largest historic mass movement. A Pleistocene debris avalanche at Mount Shasta produced a 26 km³ deposit that may be the largest Quaternary mass movement. The hummocky deposits at

Glicken

1985-01-01

257

NASA Aerospace Safety Advisory Panel  

NSDL National Science Digital Library

Established by Congress after the Apollo spacecraft fire in January 1967, the Aerospace Safety Advisory Panel (ASAP) is an independent group of experts tasked with advising "the NASA Administrator and Congress on all safety-related issues -- design, development, manufacturing, flight preparation, and missions operations -- concerning NASA's human space flight programs." The ASAP homepage features the text of previous annual reports and general information about the Panel and its activities.

258

Stress-Simulating Witness Panels  

NASA Technical Reports Server (NTRS)

Special panel fixtures developed for verifying integrity of bonds between propellants and insulators in solid-fuel rocket motors by applying, to specimens of propellant and insulator material, stresses similar to those caused by shrinkage during fabrication of motors. Assemblies of fixtures and specimens called "stress-simulating witness panels." Concept also applicable to stress testing of bonds in other manufactured products subject to shrinkage or to swelling.

Graham, Robert P.; Biegert, Lydia L.

1995-01-01

259

Analysis of adjusting effects of mounting force on frequency conversion of mounted nonlinear optics.  

PubMed

Motivated by the need to increase the second harmonic generation (SHG) efficiency of nonlinear optics with large apertures, a novel mounting configuration with active adjusting function on the SHG efficiency is proposed and mechanically and optically studied. The adjusting effects of the mounting force on the distortion and stress are analyzed by the finite element methods (FEM), as well as the contribution of the distortion and stress to the change in phase mismatch, and the SHG efficiency are theoretically stated. Further on, the SHG efficiency is calculated as a function of the mounting force. The changing trends of the distortion, stress, and the SHG efficiency with the varying mounting force are obtained, and the optimal ones are figured out. Moreover, the mechanism of the occurrence of the optimal values is studied and the adjusting strategy is put forward. Numerical results show the robust adjustment of the mounting force, as well as the effectiveness of the mounting configuration, in increasing the SHG efficiency. PMID:24514062

Su, Ruifeng; Liu, Haitao; Liang, Yingchun; Lu, Lihua

2014-01-10

260

Systems and methods for mirror mounting with minimized distortion  

NASA Technical Reports Server (NTRS)

A method for mounting a mirror for use in a telescope includes attaching the mirror to a plurality of adjustable mounts; determining a distortion in the mirror caused by the plurality adjustable mounts, and, if the distortion is determined to be above a predetermined level: adjusting one or more of the adjustable mounts; and determining the distortion in the mirror caused by the adjustable mounts; and in the event the determined distortion is determined to be at or below the predetermined level, rigidizing the adjustable mounts.

Antonille, Scott R. (Inventor); Wallace, Thomas E. (Inventor); Content, David A. (Inventor); Wake, Shane W. (Inventor)

2012-01-01

261

Adjustable link for kinematic mounting systems  

DOEpatents

An adjustable link for kinematic mounting systems is disclosed. The adjustable link is a low-cost, passive device that provides backlash-free adjustment along its single constraint direction and flexural freedom in all other directions. The adjustable link comprises two spheres, two sockets in which the spheres are adjustable retain, and a connection link threadly connected at each end to the spheres, to provide a single direction of restraint and to adjust the length or distance between the sockets. Six such adjustable links provide for six degrees of freedom for mounting an instrument on a support. The adjustable link has applications in any machine or instrument requiring precision adjustment in six degrees of freedom, isolation from deformations of the supporting platform, and/or additional structural damping. The damping is accomplished by using a hollow connection link that contains an inner rod and a viscoelastic separation layer between the two. 3 figs.

Hale, L.C.

1997-07-01

262

Shaft mount for data coupler system  

NASA Technical Reports Server (NTRS)

A device for mounting a data transmission apparatus to a rotating, tapered, and instrumented shaft is provided. This device permits attachment without interfering with shaft rotation or the accuracy of data output, and prevents both radial and axial slippage of the data transmission apparatus. The mounting device consists of a sleeve assembly which is attached to the shaft by means of clamps that are situated at some distance removed from the instrumented area of the shaft. The data transmission device is secured to the sleeve such that the entire assembly rotates with the shaft. Shim adjustments between sleeve sections assure that a minimum compressive load is transferred to the instrumented area of the shaft and a rubber lining is affixed to a large portion of the interior surface of the sleeve to absorb vibration.

Elliott, James R., Jr. (inventor); Lord, Mark T. (inventor)

1993-01-01

263

Adjustable link for kinematic mounting systems  

DOEpatents

An adjustable link for kinematic mounting systems. The adjustable link is a low-cost, passive device that provides backlash-free adjustment along its single constraint direction and flexural freedom in all other directions. The adjustable link comprises two spheres, two sockets in which the spheres are adjustable retain, and a connection link threadly connected at each end to the spheres, to provide a single direction of restraint and to adjust the length or distance between the sockets. Six such adjustable links provide for six degrees of freedom for mounting an instrument on a support. The adjustable link has applications in any machine or instrument requiring precision adjustment in six degrees of freedom, isolation from deformations of the supporting platform, and/or additional structural damping. The damping is accomplished by using a hollow connection link that contains an inner rod and a viscoelastic separation layer between the two.

Hale, Layton C. (Livermore, CA)

1997-01-01

264

Digital Encyclopedia: George Washington's Mount Vernon  

NSDL National Science Digital Library

What was George Washington's life like at Mount Vernon? This frequent question is answered in fine form by this Digital Encyclopedia, compiled by a variety of scholars in collaboration with the Mount Vernon Estate. It is particularly appropriate that there is such a copious compendium of facts on the goings-on at Mt. Vernon, as Washington was enamored of encyclopedias during his life. Drawing on a range of primary sources, this project brings together hundreds of entries divided into over a dozen topics, including Military, Slavery, Food and Drink, and Animals. The Personal area is quite compelling, as it includes entries on Barbados, smallpox and, of course, the celebrated myths surrounding Washington's false teeth.

265

Fixture for mounting small parts for processing  

DOEpatents

A fixture for mounting small parts, such as fusion target spheres or microelectronic components is disclosed. A glass stalk is drawn and truncated near its tip. The truncated end of the glass stalk is dipped into silicone rubber forming an extending streamer. After the rubber cures for approximately 24 hours, a small part is touched to the streamer, and will be held securely throughout processing. 5 figs.

Foreman, L.R.; Gomez, V.M.; Thomas, M.H.

1990-05-29

266

Fine pitch package mounting with TAB tape  

Microsoft Academic Search

The authors describe the basic concepts, development, assembly, and qualification testing of a ceramic leaded package for high-pin-count VLSI (>200 I\\/Os). The design has been aimed at achieving high-speed logic, testability, and reliability for a small pitch (<25 mil) package. To improve the electrical performance, ground and voltage distributions are separated from the logic circuitry connected by the surface mounting

G. Dehaine; J. Joly

1989-01-01

267

Anchorage of Surface Mounted FRP Reinforcement  

Microsoft Academic Search

This paper presents a novel anchor system called U-anchor that can be used to significantly improve the performance of surface mounted reinforcement for concrete\\/masonry made of fiber reinforced polymer (FRP) composites. In applications where bond and\\/or development length of FRP are critical, the U-anchor prevents debonding of the reinforcement. The anchor is based on the idea of embedding a bent

A. Khalifa; T. Alkhrdaji; A. Nanni; S. Lansburg

1999-01-01

268

On Mounting Delicate Bryophytes in Glycerol  

Microsoft Academic Search

Glycerine jelly is an effective substitute microscopic mounting medium for now dif­ ficult-to-obtain gum chloral preparations. It does not collapse most thin bryophyte tissues, pre­ serves color responses of cell walls to potassium hydroxide solution, and is made from easily obtained, non-poisonous ingredients. Like other glycerol-based mountants, it evaporates only very slowly and, with luting, is essentially permanent. The study

Richard H. Zander

1997-01-01

269

Observational Results from Mount Stony Brook Observatory  

Microsoft Academic Search

The Mount Stony Brook Observatory consists of a recently upgraded 0.35m Schmidt-Cassegrain telescope instrumented with several CCD cameras. Mt. Stony Brook, located on the Stony Brook campus, in a maritime environment approximately 40 miles East of New York City suffers from poor seeing and a bright sky. However, it offers one major advantage over larger telescopes: availability. We will describe

J. Petreshock; S. Wolk; N. Adams; F. Walter

1995-01-01

270

Solar rotation results at Mount Wilson  

NASA Technical Reports Server (NTRS)

Solar rotation results from Doppler velocity measurements made at Mount Wilson over a period of more than 14 years are presented based on a single reduction procedure. The observations were made with the wavelength 5250.2 A line of Fe I, and wavelength shifts of the line were simultaneously recorded. Data from 188 rotations are presented. Measurements of scattered light along with its effect on the measured rotation rate are given.

Howard, R.; Adkins, J. M.; Boyden, J. E.; Cragg, T. A.; Gregory, T. S.; Labonte, B. J.; Padilla, S. P.; Webster, L.

1983-01-01

271

Heavy Lifting  

NSDL National Science Digital Library

In this activity, learners work in NASA teams to build balloon-powered rockets using identical parts and compete to launch the greatest number of paper clips to "space" (the ceiling). The rockets learners build model the Ares V heavy lift launchers that carry heavy payloads into orbit. This lesson plan includes background information, tips, discussion questions and answers, and a "Mission Report" sheet for learners.

Shearer, Deborah A.; Gregory L. Vogt, Ed D.

2012-06-26

272

Dynamics of the Mount Nyiragongo lava lake  

NASA Astrophysics Data System (ADS)

permanent and presently rising lava lake at Mount Nyiragongo constitutes a major potential geological hazard to the inhabitants of the Virunga volcanic region in the Democratic Republic of Congo (DRC) and Rwanda. Based on two field campaigns in June 2010 and 2011, we estimate the lava lake level from the southeastern crater rim (~400 m diameter) and lava lake area (~46,550 m2), which constrains, respectively, the lava lake volume (~9 × 106 m3) and volume flow rate needed to keep the magma in a molten state (0.6 to 3.5 m3 s-1). A bidirectional magma flow model, which includes the characterization of the conduit diameter and funnel-shaped lava lake geometry, is developed to constrain the amount of magma intruded/emplaced within the magmatic chamber and rift-related structures that extend between Mount Nyiragongo's volcanic center and the city of Goma, DRC, since Mount Nyiragongo's last eruption (17 January 2002). Besides matching field data of the lava lake level covering the period 1977 to 2002, numerical solutions of the model indicate that by 2022, 20 years after the January 2002 eruption, between 300 and 1700 × 106 m3 (0.3 to 1.7 km3) of magma could have intruded/emplaced underneath the edifice, and the lava lake volume could exceed 15 × 106 m3.

Burgi, P.-Y.; Darrah, T. H.; Tedesco, D.; Eymold, W. K.

2014-05-01

273

Detection Performance of Upgraded "Polished Panel" Optical Receiver Concept on the Deep-Space Network's 34 Meter Research Antenna  

NASA Technical Reports Server (NTRS)

Initial optical communications experiments with a Vertex polished aluminum panel have been described. The polished panel was mounted on the main reflector of the DSN's research antenna at DSS-13. The PSF was recorded via remotely controlled digital camera mounted on the subreflector structure. Initial PSF generated by Jupiter showed significant tilt error and some mechanical deformation. After upgrades, the PSF improved significantly, leading to much better concentration of light. Communications performance of the initial and upgraded panel structure were compared. After the upgrades, simulated PPM symbol error probability decreased by six orders of magnitude. Work is continuing to demonstrate closed-loop tracking of sources from zenith to horizon, and better characterize communications performance in realistic daytime background environments.

Vilnrotter, Victor A.

2012-01-01

274

Restraint Age Forming Of Machined Panels  

NASA Technical Reports Server (NTRS)

Panels bent permanently without cracking. In restraint age forming, panel wrapped onto mandrel having necessary curved contour, restrained on mandrel clamps and vacuum, and heat treated. When panel released after end of heat treatment, retains contour of mandrel except for small springback. Process repeatable: panels subsequently processed under same mechanical and thermal conditions on same contour emerge with same final contour.

Wood, Rebecca

1993-01-01

275

Geometric Visibility of Mirror-Mounted Turn Signals.  

National Technical Information Service (NTIS)

Turn signals mounted on exterior rearview mirrors are increasingly being used as original equipment on passenger cars and light trucks. The potential for mirror-mounted turn signals (MMTS) to improve the geometric visibility of turn signals is examined in...

M. P. Reed M. J. Flannagan

2003-01-01

276

Mounting apparatus for a nozzle guide vane assembly  

DOEpatents

The present invention provides a ceramic nozzle guide assembly with an apparatus for mounting it to a metal nozzle case that includes an intermediate ceramic mounting ring. The mounting ring includes a plurality of projections that are received within a plurality of receptacles formed in the nozzle case. The projections of the mounting ring are secured within the receptacles by a ceramic retainer that allows contact between the two components only along arcuate surfaces thus eliminating sliding contact between the components. 8 figs.

Boyd, G.L.; Shaffer, J.E.

1995-09-12

277

Integral Flexure Mounts for Metal Mirrors for Cryogenic Use  

NASA Technical Reports Server (NTRS)

Semi-kinematic, six-degree-of-freedom flexure mounts have been incorporated as integral parts of metal mirrors designed to be used under cryogenic conditions as parts of an astronomical instrument. The design of the mirrors and their integral flexure mounts can also be adapted to other instruments and other operating temperatures. In comparison with prior kinematic cryogenic mirror mounts, the present mounts are more compact and can be fabricated easily using Ram-EDM (electrical discharge machining) process

Zewari, S. Wahid; Hylan, Jason E.; Irish, Sandra M.; Ohl, Raymond G.; Conkey, Shelly B.

2006-01-01

278

Chemical composition of Mount St. Helens volcanic ash  

NASA Astrophysics Data System (ADS)

Volcanic ash samples from the May 18, 1980, Mount St. Helens eruption were analyzed for major, minor, and trace composition by a variety of analytical techniques. Results indicate that the basic composition of the ash consists of approximately 65% SiO2, 18% Al2O3, 5% FetO3, 2% MgO, 4% CaO, 4% Na2O, and 0.1% S. Thirty seven trace metals are reported including Ba, Cu, Mn, Sr, V, Zn, and Zr. A change in the chemical composition of the ash as a function of distance from the volcano is related to a similar change in physical characteristics of the ash. Water soluble components were also determined after column leaching experiments were performed. Concentration levels of soluble salts were found to be moderately high (1500-2000 µg/g) with molar ratios suggesting the presence of NaCl, KCl, CaSO4, and MgSO4. Heavy metals such as Cu, Co, Mn, and Zn were found at appreciable concentrations (10-1000 µg/g). Unexpectedly high concentration levels of ammonium (45 µg/g) and nitrate (100 µg/g) ions as well as dissolved organic carbon (130 µg/g) were observed in several ash leachates. Results for fluoride and boron show low average levels of ˜5 and ˜ 0.5µg/g, respectively.

Taylor, H. E.; Lichte, F. E.

1980-11-01

279

High temperature structural sandwich panels  

NASA Astrophysics Data System (ADS)

High strength composites are being used for making lightweight structural panels that are being employed in aerospace, naval and automotive structures. Recently, there is renewed interest in use of these panels. The major problem of most commercial available sandwich panels is the fire resistance. A recently developed inorganic matrix is investigated for use in cases where fire and high temperature resistance are necessary. The focus of this dissertation is the development of a fireproof composite structural system. Sandwich panels made with polysialate matrices have an excellent potential for use in applications where exposure to high temperatures or fire is a concern. Commercial available sandwich panels will soften and lose nearly all of their compressive strength temperatures lower than 400°C. This dissertation consists of the state of the art, the experimental investigation and the analytical modeling. The state of the art covers the performance of existing high temperature composites, sandwich panels and reinforced concrete beams strengthened with Fiber Reinforced Polymers (FRP). The experimental part consists of four major components: (i) Development of a fireproof syntactic foam with maximum specific strength, (ii) Development of a lightweight syntactic foam based on polystyrene spheres, (iii) Development of the composite system for the skins. The variables are the skin thickness, modulus of elasticity of skin and high temperature resistance, and (iv) Experimental evaluation of the flexural behavior of sandwich panels. Analytical modeling consists of a model for the flexural behavior of lightweight sandwich panels, and a model for deflection calculations of reinforced concrete beams strengthened with FRP subjected to fatigue loading. The experimental and analytical results show that sandwich panels made with polysialate matrices and ceramic spheres do not lose their load bearing capability during severe fire exposure, where temperatures reach several hundred degrees Centigrade. Hence the material has excellent potential for various types of applications. The analytical predictions from both models provide reasonably accurate results. Glass, AR-glass, carbon and Nicalon tows and carbon fabrics could be successfully used as skin reinforcements increasing the flexural stiffness and strength of the core. No occurrence of fiber delamination was observed.

Papakonstantinou, Christos G.

280

75 FR 1285 - Vehicle-Mounted Earth Stations (VMES)  

Federal Register 2010, 2011, 2012, 2013

...07-101; FCC 09-64] Vehicle-Mounted Earth Stations (VMES) AGENCY: Federal Communications...to Govern the Use of Vehicle-Mounted Earth Stations in Certain Frequency Bands Allocated...and Service Rules for Vehicle-Mounted Earth Stations (VMES). Form Number: Not...

2010-01-11

281

Consumer panel study on elderly people's wishes concerning services.  

PubMed

This study informs on the wishes and needs of elderly people themselves regarding services for the elderly. The data for the study were gathered using a consumer panel method. Elderly people desire assistance in heavy cleaning chores, in outdoor activities and in carrying out their personal business. Elderly people felt that there should be more recreational services available. Elderly people link aging with feelings of insecurity and loneliness. Becoming a service user for the first time is felt to be a very difficult step to take, and so this decision is postponed as long as possible. The elderly people desire a service for assessing their individual service needs in an organized, expert and objective fashion. The study indicates that elderly people value the human contact gained through service provision. The consumer panel method for collecting data was successful. PMID:20047767

Valkila, Noora; Litja, Heli; Aalto, Leena; Saari, Arto

2010-01-01

282

Design status of heavy ion injector program  

SciTech Connect

Design and development of a sixteen beam, heavy ion injector is in progress at Los Alamos National Laboratory (LANL) to demonstrate the injector technology for the High Temperature Experiment (HTE) proposed by Lawrence Livermore Laboratory (LBL). The injector design provides for individual ion sources mounted to a support plate defining the sixteen beam array. The beamlets are electrostatically accelerated through a series of electrodes inside an evacuated (10/sup -7/ torr) high voltage (HV) accelerating column.

Ballard, E.O.; Meyer, E.A.; Rutkowski, H.L.; Shurter, R.P.; Van Haaften, F.W.; Riepe, K.B.

1985-01-01

283

ATST telescope mount: telescope of machine tool  

NASA Astrophysics Data System (ADS)

The Advanced Technology Solar Telescope (ATST) will be the largest solar telescope in the world, and will be able to provide the sharpest views ever taken of the solar surface. The telescope has a 4m aperture primary mirror, however due to the off axis nature of the optical layout, the telescope mount has proportions similar to an 8 meter class telescope. The technology normally used in this class of telescope is well understood in the telescope community and has been successfully implemented in numerous projects. The world of large machine tools has developed in a separate realm with similar levels of performance requirement but different boundary conditions. In addition the competitive nature of private industry has encouraged development and usage of more cost effective solutions both in initial capital cost and thru-life operating cost. Telescope mounts move relatively slowly with requirements for high stability under external environmental influences such as wind buffeting. Large machine tools operate under high speed requirements coupled with high application of force through the machine but with little or no external environmental influences. The benefits of these parallel development paths and the ATST system requirements are being combined in the ATST Telescope Mount Assembly (TMA). The process of balancing the system requirements with new technologies is based on the experience of the ATST project team, Ingersoll Machine Tools who are the main contractor for the TMA and MT Mechatronics who are their design subcontractors. This paper highlights a number of these proven technologies from the commercially driven machine tool world that are being introduced to the TMA design. Also the challenges of integrating and ensuring that the differences in application requirements are accounted for in the design are discussed.

Jeffers, Paul; Stolz, Günter; Bonomi, Giovanni; Dreyer, Oliver; Kärcher, Hans

2012-09-01

284

Habitat changes: Mount Haggin Wildlife Management Area  

USGS Publications Warehouse

In 1984, a rest-rotation grazing system was established on the Mount Haggin Wildlife Management Area (MHWMA) in southwest Montana. The area is a mixture of wet and dry meadow types, grass/shrublands, and forest. Prior to implementing the grazing system, photo-monitoring points were established on the MHWMA at locations were cattle concentrate were grazing. The area consists of a three pasture rest-rotation system incorporating 20,000 acres. Photo essays revealed changes in riparian, lowland, and upland sites within the grazing system. In addition, gross changes in the amount of willow present were documented.

Frisina, M. R.; Keigley, R. B.

2004-01-01

285

Mount Pinatubo: Predicting a Volcanic Eruption  

NSDL National Science Digital Library

In spite of the unpredictability of volcanoes, scientists have learned to read the many signs they display prior to an eruption, in the hope of minimizing damage to lives and personal property. This video segment describes efforts of scientists at the Pinatubo Volcanic Observatory to read the signs presented by Mount Pinatubo, just before it unleashed one of the most powerful eruptions of the 20th century. The segment is six minutes fifty-seven minutes in length. A background essay and list of discussion questions supplement the video.

2011-06-10

286

Fixture for assembling solar panels  

NASA Technical Reports Server (NTRS)

Vacuum fixture attaches array of silicon solar cells to mounting plate made of clear glass which holds and protects cells. Glass plate transmits, rather than absorbs, solar energy thus cooling cells for efficient operation. Device therefore reduces handling of cells and interconnecting conductors to one operation.

Dillard, P. A.; Fritz, W. M.

1979-01-01

287

Application of a Broadband Active Vibration Control System to a Helicopter Trim Panel  

NASA Technical Reports Server (NTRS)

This paper discusses testing of a broadband active vibration control concept on an interior trim panel in a helicopter cabin mockup located at ONERA's Centre de Toulouse. The control system consisted of twelve diamond-shaped piezoelectric actuators distributed around a 1.2m x 1.2m trim panel. Accelerometers were mounted at the four vertices of each diamond. The aspect ratio of the diamond was based on the dielectric constants of the piezoelectric material in order to create an actuator-sensor pair that was collocated over a broad frequency range. This allowed robust control to be implemented using simple, low power analog electronics. Initial testing on a thick acrylic window demonstrated the capability of the controller, but actuator performance was less satisfactory when mounted on a composite sandwich trim panel. This may have been due to the orthotropic nature of the trim panel, or due to its much higher stiffness relative to the acrylic window. Insights gained from a finite element study of the actuator-sensor-structural system are discussed.

Cabell, Randolph H.; Schiller, Noah H.; Simon, Frank

2013-01-01

288

Analytical modeling and active vibration suppression of adaptive composite panels with optimal actuator configurations  

NASA Astrophysics Data System (ADS)

In this paper, models of adaptive composite panels with surface-mounted/embedded piezoelectric patches are analytically built using the Lagrange-Rayleigh-Ritz method (LRRM), verified through experiments and finite element method (FEM), and used in piezoelectric actuator placement optimization and vibration control. Two panels are considered: a cantilevered adaptive composite beam (ACB) and an adaptive circular composite plate (ACCP) with complex boundaries. The inertia and stiffness of the surface-mounted/embedded piezoelectric patches are included in the developed models. To obtain the mode shapes of the ACCP, which are essential to the LRRM modeling, the method of separation of variables is employed and Bessel series and modified Bessel series are introduced. The built models are verified by experiments for the ACB and by the FEM for the ACCP. The actuation configurations of the piezoelectric patches in the panels are optimized based on the introduced analytical model. Finally, with the optimal locations of the piezoelectric patches, the vibration suppression of the ACB and the ACCP is experimentally and numerically carried out, and excellent vibration suppressions for both adaptive panels are obtained.

Yan, Su; Ghasemi-Nejhad, Mehrdad N.

2007-12-01

289

Panel Discussion II. Reconciling Observations and Modeling of Star Formation at High Redshifts  

NASA Astrophysics Data System (ADS)

This is the written account of the second of two panel discussions, on Reconciling observations and modeling of star formation at high redshifts. The chair of the panel was Pavel Kroupa, and panel members were Marc Balcells, John Beckman, Christopher Conselice, and Joseph Silk. After a short introduction by each of the panelists, panel and audience entered into a lively discussion, centered around the following six themes: the mass function of pre-stellar gas clouds; a possible top-heavy initial mass function at high redshifts versus mini-quasars as the first sources of ionization; the integrated galactic initial mass function; possible differences in specific star formation rates in disks and in massive galaxies; whether merging rates yield a wrong prediction for massive galaxies, and what is the physics behind the onset of the red sequence of galaxies; and the case of dark matter-dominated dwarf galaxies versus tidal dwarf galaxies.

Knapen, J. H.

2008-06-01

290

Side-mounted monorail transportation system  

SciTech Connect

A monorail transit system is described comprising: a beam adapted to be supported on a ground-supported foundation, the beam having two opposite sides, at least one of which has respective truck means provided thereon; a transit car body; at least one transit car truck and a transit car guide means for each transit car body; each transit car truck and each transit car guide means comprising a frame having first wheel means mounted thereon for rotation and disposed in rolling engagement with the track means for providing vertical support, and second and third wheel means mounted thereon for rotation and disposed in rolling engagement with the track means for providing horizontal support; each transit car truck and the transit car guide means further including an arm based on the respective the frame and arching upwardly and outwardly therefrom to an upper outer end at which a respective first securement means is provided; each transit car truck and transit car guide means for each car body being spaced from one another longitudinally of the respective track means.

Owen, W.E.

1987-09-01

291

Helmet-mounted video display system  

NASA Astrophysics Data System (ADS)

The Litton Soldier Vision Sub-system is a lightweight, low power, display system that can be mounted on the soft cap, helmet or bare head, of a soldier in the field. The head mounting approach allows hands-free operation by the soldier, thereby providing the ability to run stand shoot while still being able to observe the computer's display. Likewise, command post staff, maintenance technicians, even firemen, can function in a similar manner. The system contains four major components: HMD, electronics unit, battery housing, and cables. The HMD is a folded path design using a 60 hertz refresh active matrix liquid crystal display, with backlight from an array of six light-emitting diodes. The typical power source is a nominal 9 VDC lithium battery, the BA-5600, but rechargeable batteries can also be used. Extensive design effort has been expended to add the shielding and filters necessary for unimpaired operation in close proximity to tactical radios. The entire system, including battery and cables, weighs approximately 2.3 pounds. Small size, low power, and light weight allow the system to be used in many varied applications, including display of maintenance manuals, remote medical assistance, and field reconnaissance.

Dague, Mark W.

1997-06-01

292

Volcanic hazards at Mount Rainier, Washington  

USGS Publications Warehouse

Mount Rainier is a large stratovolcano of andesitic rock in the Cascade Range of western Washington. Although the volcano as it now stands was almost completely formed before the last major glaciation, geologic formations record a variety of events that have occurred at the volcano in postglacial time. Repetition of some of these events today without warning would result in property damage and loss of life on a catastrophic scale. It is appropriate, therefore, to examine the extent, frequency, and apparent origin of these phenomena and to attempt to predict the effects on man of similar events in the future. The present report was prompted by a contrast that we noted during a study of surficial geologic deposits in Mount Rainier National Park, between the present tranquil landscape adjacent to the volcano and the violent events that shaped parts of that same landscape in the recent past. Natural catastrophes that have geologic causes - such as eruptions, landslides, earthquakes, and floods - all too often are disastrous primarily because man has not understood and made allowance for the geologic environment he occupies. Assessment of the potential hazards of a volcanic environment is especially difficult, for prediction of the time and kind of volcanic activity is still an imperfect art, even at active volcanoes whose behavior has been closely observed for many years. Qualified predictions, however, can be used to plan ways in which hazards to life and property can be minimized. The prediction of eruptions is handicapped because volcanism results from conditions far beneath the surface of the earth, where the causative factors cannot be seen and, for the most part, cannot be measured. Consequently, long-range predictions at Mount Rainier can be based only on the past behavior of the volcano, as revealed by study of the deposits that resulted from previous eruptions. Predictions of this sort, of course, cannot be specific as to time and locale of future events, and clearly are valid only if the past behavior is, as we believe, a reliable guide. The purpose of this report is to infer the events recorded by certain postglacial deposits at Mount Rainier and to suggest what bearing similar events in the future might have on land use within and near the park. In addition, table 2 (page 22) gives possible warning signs of an impending eruption. We want to increase man's understanding of a possibly hazardous geologic environment around Mount Rainier volcano, yet we do not wish to imply for certain that the hazards described are either immediate or inevitable. However, we do believe that hazards exist, that some caution is warranted, and that some major hazards can be avoided by judicious planning. Most of the events with which we are concerned are sporadic phenomena that have resulted directly or indirectly from volcanic eruptions. Although no eruptions (other than steam emission) of the volcano in historic time are unequivocally known (Hopson and others, 1962), pyroclastic (air-laid) deposits of pumice and rock debris attest to repeated, widely spaced eruptions during the 10,000 years or so of postglacial time. In addition, the constituents of some debris flows indicate an origin during eruptions of molten rock; other debris flows, because of their large size and constituents, are believed to have been caused by steam explosions. Some debris flows, however, are not related to volcanism at all.

Crandell, Dwight Raymond; Mullineaux, Donal Ray

1967-01-01

293

Anaglyph with Landsat Overlay, Mount Meru, Tanzania  

NASA Technical Reports Server (NTRS)

Mount Meru is an active volcano located just 70 kilometers (44 miles) west of Mount Kilimanjaro. It reaches 4,566 meters (14,978 feet) in height but has lost much of its bulk due to an eastward volcanic blast sometime in its distant past, perhaps similar to the eruption of Mount Saint Helens in Washington State in 1980. Mount Meru most recently had a minor eruption about a century ago. The several small cones and craters seen in the vicinity probably reflect numerous episodes of volcanic activity. Mount Meru is the topographic centerpiece of Arusha National Park, but Ngurdoto Crater to the east (image top) is also prominent. The fertile slopes of both volcanoes rise above the surrounding savanna and support a forest that hosts diverse wildlife, including nearly 400 species of birds, and also monkeys and leopards, while the floor of Ngurdoto Crater hosts herds of elephants and buffaloes.

The stereoscopic effect of this anaglyph was created by first draping a Landsat satellite image over a digital elevation data from the Shuttle Radar Topography Mission (SRTM), and then generating two differing perspectives, one for each eye. When viewed through special glasses, the result is a vertically exaggerated view of the Earth's surface in its full three dimensions. Anaglyph glasses cover the left eye with a red filter and cover the right eye with a blue filter.

Landsat has been providing visible and infrared views of the Earth since 1972. SRTM elevation data matches the 30-meter (98-foot) resolution of most Landsat images and will substantially help in analyzing the large and growing Landsat image archive, managed by the U.S. Geological Survey (USGS).

Elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect 3-D measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter (approximately 200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between NASA, the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Earth Science Enterprise, Washington, D.C.

Size: 37.1 kilometers (23.0 miles) by 20.3 kilometers (12.6 miles) Location: 3.2 degrees South latitude, 36.7 degrees East longitude Orientation: East at top Image Data: Landsat Bands 1, 2, 3, and 4 blended as gray. Original Data Resolution: SRTM 1 arc-second (30 meters or 98 feet) Date Acquired: February 2000 (SRTM), February 21, 2000 (Landsat 7)

2002-01-01

294

Microchannel formation in polyimide by heavy ion irradiation. For the electric packaging board.  

National Technical Information Service (NTIS)

The relations between the formation of microchannels and the conditions of heavy ion irradiation and the etching have been examined for 35 (mu)m thick polyimide mounted on copper plate, which was irradiated over a mask by the heavy ions. A NaClO aqueous s...

Y. Matsumoto Y. Matsuura Y. Hibino K. Kawakami Y. Komaki

1993-01-01

295

NAS Panel faults export controls  

NASA Astrophysics Data System (ADS)

A study prepared by a top-level panel says that current export controls on militarily sensitive U.S. technology may be “overcorrecting” previous weaknesses in that system, resulting in “a complex and confusing control system” that makes it more difficult for U.S. businesses to compete in international markets. Moreover, this control system has “an increasingly corrosive effect” on U.S. relations with allies. The panel recommended that the United States concentrate more effort on bringing about uniformity in the export control policies of countries belonging to the Coordinating Committee on Multilateral Export Controls (CoCom), i.e., most of the member nations in NATO (the North Atlantic Treaty Organization) and Japan.The 21-member panel was appointed by the Committee on Science, Engineering, and Public Policy (COSEPUP), a joint unit of the National Academy of Sciences (NAS), the National Academy of Engineering (NAE), and the Institute of Medicine (IOM). The panel, composed of administrators, researchers, and former government officials, was chaired by AGU member Lew Allen, Jr., director of the Jet Propulsion Laboratory (Pasadena, Calif.) and former chief of staff of the U.S. Air Force. Their report was supported by NAS funds, by a number of private organizations (including AGU), by the U.S. Departments of Commerce, Defense, Energy, and State, by the National Science Foundation, and by the National Aeronautics and Space Administration.

Katzoff, Judith A.

296

RAPID: Prototyping control panel interfaces  

Microsoft Academic Search

RAPID is a design environment to support human factors specialists in designing user interfaces for small control panels. RAPID permits modeling of both the appearance and behavior of operator interfaces. Its main goal is to allow exploration of a greater number of design alternatives by decreasing the time and effort required to generate and evaluate those alternatives. It is a

Karl Freburger; Honeywell Bull

1987-01-01

297

The Aibs Shark Research Panel.  

National Technical Information Service (NTIS)

The AIBS Shark Research Panel was established on June 1958 to expedite and activate recommendations formulated at the ONR sponsored conference on Basic Research Approaches to the Development of Shark Repellents and (2) to serve as a clearing house for all...

J. R. Olive

1971-01-01

298

Panel I: Technology and Jobs.  

ERIC Educational Resources Information Center

Panel I features two case histories of state government, university, and private corporation cooperation to bring technology to the workplace (Microelectronics Center of North Carolina and Ben Franklin Partnership Program) and presentations about Burlington Industries and General Electric Company investments in technology to save jobs and boost…

Appalachia, 1984

1984-01-01

299

Projection-Type Graphics Panel.  

National Technical Information Service (NTIS)

Projector-type large-screen display devices are currently being widely used. The new projection-type graphics panel utilizes 70 inch screens arranged in two vertical and four horizontal rows, so that images projected from the eight projectors at the rear ...

M. Miyagawa K. Yamawaki

1989-01-01

300

Phosphors for plasma display panels  

Microsoft Academic Search

Excitation and emission characteristics were reviewed for phosphors which were reported, applied, or suggested for the plasma display panel (PDP). Correlation of luminescence characteristics to the host crystal structure and the activator of the phosphor was explained. Improvements of the PDP phosphor for practicality were considered.

Chang-Hong Kim; Il-Eok Kwon; Cheol-Hee Park; Young-Ju Hwang; Hyun-Sook Bae; Byung-Yong Yu; Chong-Hong Pyun; Guang-Yan Hong

2000-01-01

301

Deposits of large volcanic debris avalanches at Mount St. Helens and Mount Shasta volcanoes  

SciTech Connect

Large volcanic debris avalanches are among the world's largest mass movements. The rockslide-debris avalanche of the May 18, 1980, eruption of Mount St. Helens produced a 2.8 km/sup 3/ deposit and is the largest historic mass movement. A Pleistocene debris avalanche at Mount Shasta produced a 26 km/sup 3/ deposit that may be the largest Quaternary mass movement. The hummocky deposits at both volcanoes consist of rubble divided into (1) block facies that comprises unconsolidated pieces of the old edifice transported relatively intact, and (2) matrix facies that comprises a mixture of rocks from the old mountain and material picked up from the surrounding terrain. At Mount St. Helens, the juvenile dacite is found in the matrix facies, indicating that matrix facies formed from explosions of the erupting magma as well as from disaggregation and mixing of blocks. The block facies forms both hummocks and interhummock areas in the proximal part of the St. Helens avalanche deposit. At Mount St. Helens, the density of the old cone is 21% greater than the density of the avalanche deposit. Block size decreases with distance. Clast size, measured in the field and by sieving, coverages about a mean with distance, which suggests that blocks disaggregated and mixed together during transport.

Glicken, H.

1985-01-01

302

PANEL CODE FOR PLANAR CASCADES  

NASA Technical Reports Server (NTRS)

The Panel Code for Planar Cascades was developed as an aid for the designer of turbomachinery blade rows. The effective design of turbomachinery blade rows relies on the use of computer codes to model the flow on blade-to-blade surfaces. Most of the currently used codes model the flow as inviscid, irrotational, and compressible with solutions being obtained by finite difference or finite element numerical techniques. While these codes can yield very accurate solutions, they usually require an experienced user to manipulate input data and control parameters. Also, they often limit a designer in the types of blade geometries, cascade configurations, and flow conditions that can be considered. The Panel Code for Planar Cascades accelerates the design process and gives the designer more freedom in developing blade shapes by offering a simple blade-to-blade flow code. Panel, or integral equation, solution techniques have been used for several years by external aerodynamicists who have developed and refined them into a primary design tool of the aircraft industry. The Panel Code for Planar Cascades adapts these same techniques to provide a versatile, stable, and efficient calculation scheme for internal flow. The code calculates the compressible, inviscid, irrotational flow through a planar cascade of arbitrary blade shapes. Since the panel solution technique is for incompressible flow, a compressibility correction is introduced to account for compressible flow effects. The analysis is limited to flow conditions in the subsonic and shock-free transonic range. Input to the code consists of inlet flow conditions, blade geometry data, and simple control parameters. Output includes flow parameters at selected control points. This program is written in FORTRAN IV for batch execution and has been implemented on an IBM 370 series computer with a central memory requirement of approximately 590K of 8 bit bytes. This program was developed in 1982.

Mcfarland, E. R.

1994-01-01

303

Mount St. Helens 1980 and Mount Pelee 1902—Flow or surge?  

NASA Astrophysics Data System (ADS)

The far-reaching directed “blast” of Mount St. Helens and the devastating nuees ardentes of Mount Pelée produced deposits that in many places consist of three main layers: a basal gravelly or sandy layer 1, a massive or bedded ash layer 2, and a capping ash-cloud layer 3. These thin and in part landscape-mantling deposits are generally ascribed to pyroclastic surges, and the dune bedding seen in parts of layer 2 has reinforced this interpretation. There are several reasons, however, for preferring a pyroclastic-flow origin: (1) much of layer 2 is unequivocal pyroclastic flow; (2) the tripartite subdivision and landscape mantling habit is similar to that displayed by ignimbrites of the low-aspect-ratio type; (3) the deflation of a pyroclastic surge and the subsequent deposition of particulate material will tend not to conserve the fine ash and dust that are abundant in valley-ponded parts of layer 2 and cannot explain the observed tendency for layer 2 to show stronger fines depletion on ridges than in valley bottoms; and (4) the coarseness and the variance of grain size found within dune-bedded bed sets in Mount St. Helens layer 2 are like those of very weak pyroclastic surges, and the dune bedding most likely resulted from local minor turbulence (as could have been caused by surface roughness in a mountainous terrain littered with tree stumps and fallen trees) in a thin depositing pyroclastic flow. The directed blast and nuees ardentes at Mount St. Helens and Mount Pelée are interpreted to have been violently emplaced pyroclastic flows producing deposits of low-aspect-ratio type, the characteristics of which stem from an exceptionally high flow velocity.

Walker, George P. L.; McBroome, Lisa A.

1983-10-01

304

Fire and forest history at Mount Rushmore.  

PubMed

Mount Rushmore National Memorial in the Black Hills of South Dakota is known worldwide for its massive sculpture of four of the United States' most respected presidents. The Memorial landscape also is covered by extensive ponderosa pine (Pinus ponderosa) forest that has not burned in over a century. We compiled dendroecological and forest structural data from 29 plots across the 517-ha Memorial and used fire behavior modeling to reconstruct the historical fire regime and forest structure and compare them to current conditions. The historical fire regime is best characterized as one of low-severity surface fires with occasional (> 100 years) patches (< 100 ha) of passive crown fire. We estimate that only approximately 3.3% of the landscape burned as crown fire during 22 landscape fire years (recorded at > or = 25% of plots) between 1529 and 1893. The last landscape fire was in 1893. Mean fire intervals before 1893 varied depending on spatial scale, from 34 years based on scar-to-scar intervals on individual trees to 16 years between landscape fire years. Modal fire intervals were 11-15 years and did not vary with scale. Fire rotation (the time to burn an area the size of the study area) was estimated to be 30 years for surface fire and 800+ years for crown fire. The current forest is denser and contains more small trees, fewer large trees, lower canopy base heights, and greater canopy bulk density than a reconstructed historical (1870) forest. Fire behavior modeling using the NEXUS program suggests that surface fires would have dominated fire behavior in the 1870 forest during both moderate and severe weather conditions, while crown fire would dominate in the current forest especially under severe weather. Changes in the fire regime and forest structure at Mount Rushmore parallel those seen in ponderosa pine forests from the southwestern United States. Shifts from historical to current forest structure and the increased likelihood of crown fire justify the need for forest restoration before a catastrophic wildfire occurs and adversely impacts the ecological and aesthetic setting of the Mount Rushmore sculpture. PMID:19263892

Brown, Peter M; Wienk, Cody L; Symstad, Amy J

2008-12-01

305

49 CFR 845.22 - Technical panel.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Technical panel. 845.22 Section...INCIDENT HEARINGS AND REPORTS Conduct of Hearing § 845.22 Technical panel. The Director...members of the Board's technical staff to participate...

2013-10-01

306

Installation package for concentrating solar collector panels  

NASA Technical Reports Server (NTRS)

The concentrating solar collector panels comprise a complete package array consisting of collector panels using modified Fresnel prismatic lenses for a 10 to 1 concentrating ratio, supporting framework, fluid manifolding and tracking drive system, and unassembled components for field erection.

1978-01-01

307

Retaining Ring Fastener for Solar Panels  

NASA Technical Reports Server (NTRS)

Simple articulating linkage secures solar panels into supporting framework. Five element linkage collapses into W-shape for easy placement into framework, then expands to form rectangle of same dimensions as those of panel.

Wilson, A. H.

1983-01-01

308

21 CFR 660.3 - Reference panel.  

Code of Federal Regulations, 2013 CFR

...LABORATORY TESTS Antibody to Hepatitis B Surface Antigen § 660.3 Reference panel. A Reference Hepatitis B Surface Antigen Panel shall...and specificity of Antibody to Hepatitis B Surface Antigen. [40 FR...

2013-04-01

309

21 CFR 660.3 - Reference panel.  

Code of Federal Regulations, 2011 CFR

...LABORATORY TESTS Antibody to Hepatitis B Surface Antigen § 660.3 Reference panel. A Reference Hepatitis B Surface Antigen Panel shall...and specificity of Antibody to Hepatitis B Surface Antigen. [40 FR...

2011-04-01

310

75 FR 56146 - Arts Advisory Panel; Meetings  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel; Meetings...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2010-09-15

311

76 FR 50499 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2011-08-15

312

76 FR 63664 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2011-10-13

313

75 FR 27825 - Arts Advisory Panel  

Federal Register 2010, 2011, 2012, 2013

...THE ARTS AND THE HUMANITIES National Endowment for the Arts Arts Advisory Panel Pursuant...the Office of AccessAbility, National Endowment for the Arts, 1100 Pennsylvania Avenue...Guidelines & Panel Operations, National Endowment for the Arts, Washington, DC...

2010-05-18

314

Mount Hood exploration, Oregon: a case history  

SciTech Connect

An assessment program of Mount Hood is giving information useful for geothermal development in the area and is expected to characterize and aid in exploration of other Cascade volcanoes. These studies have shown the presence of thermal waters coming to the surface around the south flank of the mountain and subsurface flow in other areas. Geothermal gradient drilling shows the average heat flow in the area to be about two times normal increasing toward the summit. Two commercial exploration programs resulting in drilling are underway; Northwest Natural Gas is exploring the west side for direct utilization in the Portland area, and Wy'East is exploring near Timberline Lodge on the south flank. On the west side adequate temperatures have been found but the wells have not found enough permeability to be useful. At Timberline Lodge a 4000' well appears to have sufficient temperature, but it has not yet been tested. Further exploration and testing will continue this summer.

Bowen, R.G.

1981-05-01

315

A visit to Mount St. Helens  

SciTech Connect

The May 18, 1980, eruption displaced roughly 2.6 km[sup 3] of rock and devastated more than 500 km[sup 2] of forest, mostly to the north of the mountain. Trees within 10--15 km of the mountain peak were burned and uprooted. Beyond that, high winds and flying debris created a blowdown zone. Up to 150 m of rock and ice covered some areas. Accumulations of ash were measured as much as 330 km from the volcano. Mud flows choked nearby rivers and streams. Two years later, the US Congress established the 44,000-hectare Mount St. Helens National Volcanic Monument. The Act essentially directed the USDA Forest Service to allow the area to recover naturally. The paper reviews what changes the ecosystem has been going through since the eruption and the lessons learned that suggest some new resource management techniques.

Meadows, D.G.

1994-04-01

316

Temperature compensated sleeve type mirror mount  

NASA Technical Reports Server (NTRS)

The primary mirror of a large (26-inch diameter aperture) solar telescope was made of glass ceramic and designed with an integral hub on the back of the center of the mirror. This permits heat from the mirror to radiate off its back to a nearby cold plate. To permit mounting without high stresses, the hub was ground down to a smooth cylindrical surface 3.5 inch in diameter. The ground surface was then acid-etched to remove 0.007 inch (on the diameter) by immersion for five minutes in a mixture of four parts 92% sulfuric acid and three parts 50% hydrofluoric acid. The acid etching removes microcracks from the ground Cer-Vit surface. An Invar sleeve was fabricated to fit over the hub with about 0.010 inch radial (0.020 inch diametral) clearance.

1973-01-01

317

Reusable vibration resistant integrated circuit mounting socket  

SciTech Connect

This invention discloses a novel form of socket for integrated circuits to be mounted on printed circuit boards. The socket uses a novel contact which is fabricated out of a bimetallic strip with a shape which makes the end of the strip move laterally as temperature changes. The end of the strip forms a barb which digs into an integrated circuit lead at normal temperatures and hold it firmly in the contact, preventing loosening and open circuits from vibration. By cooling the contact containing the bimetallic strip the barb end can be made to release so that the integrated circuit lead can be removed from the socket without damage either to the lead or to the socket components.

Evans, C.N.

1993-12-31

318

Reusable vibration resistant integrated circuit mounting socket  

DOEpatents

This invention discloses a novel form of socket for integrated circuits to be mounted on printed circuit boards. The socket uses a novel contact which is fabricated out of a bimetallic strip with a shape which makes the end of the strip move laterally as temperature changes. The end of the strip forms a barb which digs into an integrated circuit lead at normal temperatures and holds it firmly in the contact, preventing loosening and open circuits from vibration. By cooling the contact containing the bimetallic strip the barb end can be made to release so that the integrated circuit lead can be removed from the socket without damage either to the lead or to the socket components.

Evans, Craig N. (Irwin, PA)

1995-01-01

319

Article mounting and position adjustment stage  

DOEpatents

An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole.

Cutburth, Ronald W. (Tracy, CA) [Tracy, CA; Silva, Leonard L. (Livermore, CA) [Livermore, CA

1988-01-01

320

In the wake of Mount St Helens.  

PubMed

On May 18, 1980, Mount St Helens, Washington State's most active volcano, erupted violently. Volcanic eruptions in recent geologic history have demonstrated tremendous environmental impact and caused significant loss of human life. Volcanic ash expelled during the eruption was deposited on much of eastern Washington and had a profound effect on local air quality. Although ash is relatively inert, analysis revealed a small but significant amount of free crystalline silica, the causative agent of silicosis. The fine particles of ash were of respirable size, and there was a remarkable increase in the volume of respiratory cases seen in emergency departments during the period of high airborne particulate levels. Numerous cases of injury indirectly related to the fall of ash were also seen. The long-term effect of exposure to this volcanic ash is unknown. A prompt, coordinated community medical response is necessary to protect the general population from the potential hazard of exposure to volcanic ash. PMID:7073033

Nania, J; Bruya, T E

1982-04-01

321

MOUNT HOOD WILDERNESS AND ADJACENT AREAS, OREGON.  

USGS Publications Warehouse

A mineral survey of the Mount Hood Wilderness, Oregon, was conducted. Geochemical data indicate two areas of substantiated mineral-resource potential containing weak epithermal mineralization: an area of the north side of Zigzag Mountain where vein-type lead-zinc-silver deposits occur and an area of the south side of Zigzag Mountain, where the upper part of a quartz diorite pluton has propylitic alteration associated with mineralization of copper, gold, silver, lead, and zinc in discontinuous veins. Geothermal-resource potential for low- to intermediate-temperature (less than 248 degree F) hot-water systems in the wilderness is probable in these areas. Part of the wilderness is classified as a Known Geothermal Resource Area (KGRA), which is considered to have probable geothermal-resource potential, and two parts of the wilderness have been included in geothermal lease areas.

Keith, T. E. C.; Causey, J. D.

1984-01-01

322

Environmental evaluation of Surface Mounted Devices (SMD)  

SciTech Connect

We evaluated the comparative reliability of solder interconnections used for Leadless Chip Carriers (LCCs), Meaded, and flat-pack hybrid microcircuits mounted on FR-4 glass epoxy printed wiring boards (PWBs). The board assemblies, with solder attached microcircuits, were repeatedly thermal cycled from - 65 to +125{degrees}C. We recognize that this temperature range far exceeds most testing of assemblies. The purposes of these tests were to evaluate worst-case conditions and to obtain comparative information. Identical PWB assemblies, using these three component types, were subjected to both thermal shock testing (1 cycle every 42 minutes) and temperature cycle testing (1 cycle every 3 hours). The double testing evaluated the differences in stress application and evaluated the potential of replacing slow transition, expensive temperature cycle testing (which has been an industry standard for years) with the much more rapid thermal shock testing.

Barr, V.C.; Andrade, A.D.

1997-06-01

323

Solder Mounting Technologies for Electronic Packaging  

SciTech Connect

Soldering provides a cost-effective means for attaching electronic packages to circuit boards using both small scale and large scale manufacturing processes. Soldering processes accommodate through-hole leaded components as well as surface mount packages, including the newer area array packages such as the Ball Grid Arrays (BGA), Chip Scale Packages (CSP), and Flip Chip Technology. The versatility of soldering is attributed to the variety of available solder alloy compositions, substrate material methodologies, and different manufacturing processes. For example, low melting temperature solders are used with temperature sensitive materials and components. On the other hand, higher melting temperature solders provide reliable interconnects for electronics used in high temperature service. Automated soldering techniques can support large-volume manufacturing processes, while providing high reliability electronic products at a reasonable cost.

VIANCO, PAUL T.

1999-09-23

324

Article mounting and position adjustment stage  

DOEpatents

An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole. 6 figs.

Cutburth, R.W.; Silva, L.L.

1988-05-10

325

Rack assembly for mounting solar modules  

DOEpatents

A rack assembly is provided for mounting solar modules over an underlying body. The rack assembly may include a plurality of rail structures that are arrangeable over the underlying body to form an overall perimeter for the rack assembly. One or more retention structures may be provided with the plurality of rail structures, where each retention structure is configured to support one or more solar modules at a given height above the underlying body. At least some of the plurality of rail structures are adapted to enable individual rail structures to be sealed over the underlying body so as to constrain air flow underneath the solar modules. Additionally, at least one of (i) one or more of the rail structures, or (ii) the one or more retention structures are adjustable so as to adapt the rack assembly to accommodate solar modules of varying forms or dimensions.

Plaisted, Joshua Reed; West, Brian

2012-09-04

326

Rack assembly for mounting solar modules  

DOEpatents

A rack assembly is provided for mounting solar modules over an underlying body. The rack assembly may include a plurality of rail structures that are arrangeable over the underlying body to form an overall perimeter for the rack assembly. One or more retention structures may be provided with the plurality of rail structures, where each retention structure is configured to support one or more solar modules at a given height above the underlying body. At least some of the plurality of rail structures are adapted to enable individual rail structures o be sealed over the underlying body so as to constrain air flow underneath the solar modules. Additionally, at least one of (i) one or more of the rail structures, or (ii) the one or more retention structures are adjustable so as to adapt the rack assembly to accommodate solar modules of varying forms or dimensions.

Plaisted, Joshua Reed (Oakland, CA); West, Brian (San Francisco, CA)

2010-12-28

327

76 FR 23298 - Bottom Mount Combination Refrigerator-Freezers From the Republic of Korea: Initiation of...  

Federal Register 2010, 2011, 2012, 2013

...Administration [C-580-866] Bottom Mount Combination Refrigerator-Freezers From the Republic...petition concerning imports of bottom mount combination refrigerator-freezers (bottom mount...refrigerators. See ``Bottom Mount Combination Refrigerator-Freezers From the...

2011-04-26

328

Helmet-mounted display (day/night)  

NASA Astrophysics Data System (ADS)

A dangerous situation is created when the pilot looks inside the cockpit for instrument information when flying combat and low altitude missions. While looking at instruments, a pilot cannot be performing situation analysis; yet not looking at instruments runs such risks as flying into the ground, particularly in low visibility conditions or in relatively featureless terrain where visual cues for altitude and attitude are inadequate or deceptive. The AN/AVS-7 HMD solves this problem for night flight for both helicopters and fixed wing aircraft which must operate in a 'nap of the earth' flight regime. The display unit mounts on the AN/AVS-6 night vision goggles and provides symbology overlaid on the pilot's outside view; cockpit instrument information is thus provided through the goggles. The pilot is immediately aware of changes in either his surroundings or the instrument readings. This minimizes the risk of critical information being missed in one area while the pilot is looking in the other. The 'day' HMD version of the AN/AVS-7 display now carries these advantages into daytime flights. This display unit operates in conditions from full sunlight to dusk, provides the same symbology as the night display, and connects to the night display interface with no aircraft modification. The day HMD mounts to the helmet using the attachment points previously reserved for the night vision goggles. This display improves the safety of daytime operations by keeping the eyes 'out of the cockpit' in difficult situations such as those presented during landings, cargo lifting and flight utilizing terrain masking. It offers the possibility of a less stressful way of familiarizing the pilot with the symbology and of the dynamic relationships it has to the aircraft and background motions. This familiarization is now accomplished during night flights using night vision goggles. The 'day' HMD is also a useful maintenance aid, easing the ground crew's checkout of the aircraft systems during the day.

Givens, Gerald S.; Yona, Zvi

1996-06-01

329

Artificial Surface-Mounted Molecular Dipolar Rotors  

NASA Astrophysics Data System (ADS)

Several types of dipolar molecules have been synthesized and mounted on flat surfaces of solids and mercury. Each molecule contains an axle about which the dipolar rotor can rotate. In azimuthal rotors, the axle is normal to the surface, and in altitudinal rotors, it is parallel to the surface. The rotor-carrying surfaces have been characterized by standard tools: grazing incidence spectroscopy, ellipsometry, Auger spectroscopy, scanning microscopy, and in the case of mercury, also Langmuir isotherm and electrochemistry. The response of the mounted rotors to electric field has been studied by dielectric measurements as a function of temperature. The resulting data have been compared with the results of molecular dynamics simulations performed using the Universal Force Field of Rappe and Goddard. For a rotating electric field, these can be summarized in the form of log-log plots of electric field strength versus frequency. Different regions in this "rotor phase diagram" correspond to different types of response by the rotor to the driving field: synchronous rotation, asynchronous rotation, random driven motion, random thermal motion, and hindered motion. In order for the rotor to act like an electrical motor, at low frequencies the driving force has to overcome the larger of the two resisting factors, random thermal motion or intrinsic potential barrier to rotation, and at high frequencies, it needs to overcome friction (intramolecular energy redistribution from the driven rotational mode into other degrees of freedom). A simple "shaking washboard" model fits the computational results well and permits the outcome of a large number of numerical simulations to be summarized in values of a frequency-dependent friction constant.

Michl, Josef

2003-03-01

330

Lightweight composites for modular panelized construction  

NASA Astrophysics Data System (ADS)

Rapid advances in construction materials technology have enabled civil engineers to achieve impressive gains in the safety, economy, and functionality of structures built to serve the common needs of society. Modular building systems is a fast-growing modern, form of construction gaining recognition for its increased efficiency and ability to apply modern technology to the needs of the market place. In the modular construction technique, a single structural panel can perform a number of functions such as providing thermal insulation, vibration damping, and structural strength. These multifunctional panels can be prefabricated in a manufacturing facility and then transferred to the construction site. A system that uses prefabricated panels for construction is called a "panelized construction system". This study focuses on the development of pre-cast, lightweight, multifunctional sandwich composite panels to be used for panelized construction. Two thermoplastic composite panels are proposed in this study, namely Composite Structural Insulated Panels (CSIPs) for exterior walls, floors and roofs, and Open Core Sandwich composite for multifunctional interior walls of a structure. Special manufacturing techniques are developed for manufacturing these panels. The structural behavior of these panels is analyzed based on various building design codes. Detailed descriptions of the design, cost analysis, manufacturing, finite element modeling and structural testing of these proposed panels are included in this study in the of form five peer-reviewed journal articles. The structural testing of the proposed panels involved in this study included flexural testing, axial compression testing, and low and high velocity impact testing. Based on the current study, the proposed CSIP wall and floor panels were found satisfactory, based on building design codes ASCE-7-05 and ACI-318-05. Joining techniques are proposed in this study for connecting the precast panels on the construction site. Keywords: Modular panelized construction, sandwich composites, composite structural insulated panels (CSIPs).

Vaidya, Amol S.

331

Silicone-Rubber Tooling for Hollow Panels  

NASA Technical Reports Server (NTRS)

Wave-free contour surface obtained by using flexible mold. Silicone-rubber layup tool, when used in conjunction with hard plastic laminating mold defining desired contour, produces panel with wave-free surface that accurately reproduces shape of mold. In addition to providing porous hollow-panel wing structure that acts as duct for transporting sucked boundary layer tooling, also used to fabricate high-strength lightweight door panels and any single-or compound-contour panel.

Gallimore, F. H.

1985-01-01

332

Piezoelectric Smart Panels for Broadband Noise Reduction  

Microsoft Academic Search

This article presents the noise reduction performance of piezoelectric smart panels featuring piezoelectric shunt damping. A piezoelectric smart panel is a plate structure on which a piezoelectric patch with an electrical shunt circuit is attached. When an incidence sound is impinged on the panel structure, the structure vibrates and the attached piezoelectric patch produces electrical energy, which is effectively dissipated

Jaehwan Kim; Young-Chae Jung

2006-01-01

333

Camera Mount for a Head-Up Display  

NASA Technical Reports Server (NTRS)

A mounting mechanism was designed and built to satisfy requirements specific to a developmental head-up display (HUD) to be used by pilots in a Boeing 757 airplane. This development was necessitated by the fact that although such mounting mechanisms were commercially available for other airplanes, there were none for the 757. The mounting mechanism supports a miniature electronic camera that provides a forward view. The mechanism was designed to be integrated with the other HUD instrumentation and to position the camera so that what is presented to the pilot is the image acquired by the camera, overlaid with alphanumeric and/or graphical symbols, from a close approximation of the pilot s natural forward perspective. The mounting mechanism includes an L-shaped mounting arm that can be adjusted easily to the pilot s perspective, without prior experience. The mounting mechanism is lightweight and flexible and presents little hazard to the pilot.

Geoge, Wayne; Barnes, Monica; Johnson, Larry; Shelton, Kevin

2007-01-01

334

A multiple pointing-mount control strategy for space platforms  

NASA Technical Reports Server (NTRS)

A new disturbance-adaptive control strategy for multiple pointing-mount space platforms is proposed and illustrated by consideration of a simplified 3-link dynamic model of a multiple pointing-mount space platform. Simulation results demonstrate the effectiveness of the new platform control strategy. The simulation results also reveal a system 'destabilization phenomena' that can occur if the set of individual platform-mounted experiment controllers are 'too responsive.'

Johnson, C. D.

1992-01-01

335

ASAP Aerospace Safety Advisory Panel  

NASA Technical Reports Server (NTRS)

This is the First Quarterly Report for the newly reconstituted Aerospace Safety Advisory Panel (ASAP). The NASA Administrator rechartered the Panel on November 18,2003, to provide an independent, vigilant, and long-term oversight of NASA's safety policies and programs well beyond Return to Flight of the Space Shuttle. The charter was revised to be consistent with the original intent of Congress in enacting the statute establishing ASAP in 1967 to focus on NASA's safety and quality systems, including industrial and systems safety, risk-management and trend analysis, and the management of these activities.The charter also was revised to provide more timely feedback to NASA by requiring quarterly rather than annual reports, and by requiring ASAP to perform special assessments with immediate feedback to NASA. ASAP was positioned to help institutionalize the safety culture of NASA in the post- Stafford-Covey Return to Flight environment.

2004-01-01

336

Flat Panel Vacuum Thermal Insulation  

Microsoft Academic Search

Evacuated mats of glass fiber made up of fibers of proper size and orientation are capable of supporting a compressive mechanical loading of at least one atmosphere and yet maintain a thermal conductivity of less than 10 microcalories?cm°C sec. The use of such a glass fiber mat as a filler makes possible an evacuated flat-panel thermal insulation which is comparable

H. M. Strong; F. P. Bundy; H. P. Bovenkerk

1960-01-01

337

Vibration damping in sandwich panels  

Microsoft Academic Search

Currently, there is incomplete knowledge of the damping level and its sources in satellite structures and a suitable method\\u000a to model it constitutes a necessary step for reliable dynamic predictions. As a first step of a damping characterization,\\u000a the damping of honeycomb structural panels, which is identified as a main contributor to global damping, has been considered\\u000a by ALCATEL SPACE.

M. R. Maheri; R. D. Adams; J. Hugon

2008-01-01

338

Shop Equipment, General Purpose and Organization Repair, Vehicular-Mounted.  

National Technical Information Service (NTIS)

The document provides test methods and techniques necessary to determine the technical performance and safety characteristics of vehicular mounted shop equipment, and their associated tools and equipment. (Author)

1969-01-01

339

Static Performance of a Wing-Mounted Thrust Reverser Concept  

NASA Technical Reports Server (NTRS)

An experimental investigation was conducted in the Jet-Exit Test Facility at NASA Langley Research Center to study the static aerodynamic performance of a wing-mounted thrust reverser concept applicable to subsonic transport aircraft. This innovative engine powered thrust reverser system is designed to utilize wing-mounted flow deflectors to produce aircraft deceleration forces. Testing was conducted using a 7.9%-scale exhaust system model with a fan-to-core bypass ratio of approximately 9.0, a supercritical left-hand wing section attached via a pylon, and wing-mounted flow deflectors attached to the wing section. Geometric variations of key design parameters investigated for the wing-mounted thrust reverser concept included flow deflector angle and chord length, deflector edge fences, and the yaw mount angle of the deflector system (normal to the engine centerline or parallel to the wing trailing edge). All tests were conducted with no external flow and high pressure air was used to simulate core and fan engine exhaust flows. Test results indicate that the wing-mounted thrust reverser concept can achieve overall thrust reverser effectiveness levels competitive with (parallel mount), or better than (normal mount) a conventional cascade thrust reverser system. By removing the thrust reverser system from the nacelle, the wing-mounted concept offers the nacelle designer more options for improving nacelle aero dynamics and propulsion-airframe integration, simplifying nacelle structural designs, reducing nacelle weight, and improving engine maintenance access.

Asbury, Scott C.; Yetter, Jeffrey A.

1998-01-01

340

Panel urges cloning ethics boards  

SciTech Connect

A 7-month review of the system that guides U.S. policy on the ethical, legal, and social issues (ELSI) of the Human Genome Project has concluded that it is time for a radical overhaul. A report completed last month recommends that a high-level policy board be created in the office of the Secretary of Health and Human Services to help develop policies on such sensitive issues as genetic privacy, antidiscrimination legislation, public education on genetic risks, and the regulation of genetic testing. If accepted, the proposal-from a review panel chaired by attorney Mark Rothstein of the University of Houston and geneticist M. Anne Spence of the University of California, Irvine-would create a new panel of 15 to 18 members to serve as {open_quotes}a public forum for discussion of ... critical issues.{close_quotes} This panel would replace the current advisory body, known as the ELSI Working Group, and end what the report calls a {open_quotes}discordance{close_quotes} between the broad scope of the Working Group and the {open_quotes}very limited focus{close_quotes} of the research program under which it operates.

Marshall, E.

1997-01-03

341

High efficiency, high density terrestrial panel. [for solar cell modules  

NASA Technical Reports Server (NTRS)

Terrestrial panels were fabricated using rectangular cells. Packing densities in excess of 90% with panel conversion efficiencies greater than 13% were obtained. Higher density panels can be produced on a cost competitive basis with the standard salami panels.

Wohlgemuth, J.; Wihl, M.; Rosenfield, T.

1979-01-01

342

Distribution of melt beneath Mount St Helens and Mount Adams inferred from magnetotelluric data  

NASA Astrophysics Data System (ADS)

Three prominent volcanoes that form part of the Cascade mountain range in Washington State (USA)-Mounts St Helens, Adams and Rainier-are located on the margins of a mid-crustal zone of high electrical conductivity. Interconnected melt can increase the bulk conductivity of the region containing the melt, which leads us to propose that the anomalous conductivity in this region is due to partial melt associated with the volcanism. Here we test this hypothesis by using magnetotelluric data recorded at a network of 85 locations in the area of the high-conductivity anomaly. Our data reveal that a localized zone of high conductivity beneath this volcano extends downwards to join the mid-crustal conductor. As our measurements were made during the recent period of lava extrusion at Mount St Helens, we infer that the conductivity anomaly associated with the localized zone, and by extension with the mid-crustal conductor, is caused by the presence of partial melt. Our interpretation is consistent with the crustal origin of silicic magmas erupting from Mount St Helens, and explains the distribution of seismicity observed at the time of the catastrophic eruption in 1980 (refs 9, 10).

Hill, Graham J.; Caldwell, T. Grant; Heise, Wiebke; Chertkoff, Darren G.; Bibby, Hugh M.; Burgess, Matt K.; Cull, James P.; Cas, Ray A. F.

2009-11-01

343

Foam-injected sandwich panels with continuous-reinforced facings  

NASA Astrophysics Data System (ADS)

Thermoplastic foam injection molding (FIM) in combination with insert molding (IM) offers a possibility to generate sandwich panels in a one-step process. The prepared face sheets are first positioned inside the mold. A preheating process is carried out using quartz infrared emitters, which are mounted on a linear robot, before the mold is closed. The injection of the gas/melt mixture is combined with an embossing of the mold to further improve the face-core-adhesion. Finally, to initiate the foaming process, adjust the extent of foaming of the core and achieve the desired component dimensions, a mold opening stroke is carried out. The process described was performed with different facing materials, layer dimensions and overall wall thicknesses. Drawn PP fabrics (Curv®) as well as PP/GF70 tapes and consolidated sheets (unidirectional) were used to generate sandwich panels in a range of 5 to 6.4 mm thickness. PP was also chosen to form the foamed core which, in combination with the Curv® face sheets, produces a fully recyclable self-reinforced polymer (SRP) composite. Detailed process descriptions and the results of bending tests demonstrate the high potential. Other focuses are the preheating process and the foam structure.

Menrath, A.; Henning, F.; Huber, T.; Roch, A.; Riess, C.

2014-05-01

344

High-bandwidth remote flat panel display interconnect system  

NASA Astrophysics Data System (ADS)

High performance electronic displays (CRT, AMLCD, TFEL, plasma, etc.) require wide bandwidth electrical drive signals to produce the desired display images. When the image generation and/or image processing circuitry is located within the same line replaceable unit (LRU) as the display media, the transmission of the display drive signals to the display media presents no unusual design problems. However, many aircraft cockpits are severely constrained for available space behind the instrument panel. This often forces the system designer to specify that only the display media and its immediate support circuitry are to be mounted in the instrument panel. A wide bandwidth interconnect system is then required to transfer image data from the display generation circuitry to the display unit. Image data transfer rates of nearly 1.5 Gbits/second may be required when displaying full motion video at a 60 Hz field rate. In addition to wide bandwidth, this interconnect system must exhibit several additional key characteristics: (1) Lossless transmission of image data; (2) High reliability and high integrity; (3) Ease of installation and field maintenance; (4) High immunity to HIRF and electrical noise; (5) Low EMI emissions; (6) Long term supportability; and (7) Low acquisition and maintenance cost. Rockwell Collins has developed an avionics grade remote display interconnect system based on the American National Standards Institute Fibre Channel standard which meets these requirements. Readily available low cost commercial off the shelf (COTS) components are utilized, and qualification tests have confirmed system performance.

Peterson, Darrel G.

1999-08-01

345

Analytical comparison of three stiffened panel concepts  

NASA Technical Reports Server (NTRS)

Three stiffened panel concepts are evaluated to find optimized designs for integral stiffeners in the barrels of Reusable Launch Vehicle fuel tanks. The three panel concepts considered are a T-stiffened panel, a panel with one blade stiffener centered between each pair of T-stiffeners, and a panel with two blade stiffeners equally spaced between each pair of T-stiffeners. The panels are optimized using PASCO for a range of compressive loads, and the computed areal weight for each panel is used to compare the concepts and predict tank weights. The areal weight of the T-stiffened panel with one blade is up to seven-percent lower than the other panel concepts. Two tank construction methods are compared for a representative tank design with three barrels. In the first method, 45-degree circumferential sections of a barrel are each designed to carry the same maximum load in the barrel. In the second method, each barrel section is designed for the maximum load in that section. Representative tanks designed with the first method are over 250 lb heavier than tanks designed using the second method. Optimized panel designs and areal weights are also computed for variation of the nominal panel length and skin thickness.

Maloney, Jill M.; Wu, K. Chauncey; Robinson, James C.

1995-01-01

346

X-38 Mounted on Pylon of B-52 Mothership  

NASA Technical Reports Server (NTRS)

A close-up view of the X-38 research vehicle mounted under the wing of the B-52 mothership prior to a 1997 test flight. The X-38, which was designed to help develop technology for an emergency crew return vehicle (CRV) for the International Space Station, is one of many research vehicles the B-52 has carried aloft over the past 40 years. NASA B-52, Tail Number 008, is an air launch carrier aircraft, 'mothership,' as well as a research aircraft platform that has been used on a variety of research projects. The aircraft, a 'B' model built in 1952 and first flown on June 11, 1955, is the oldest B-52 in flying status and has been used on some of the most significant research projects in aerospace history. Some of the significant projects supported by B-52 008 include the X-15, the lifting bodies, HiMAT (highly maneuverable aircraft technology), Pegasus, validation of parachute systems developed for the space shuttle program (solid-rocket-booster recovery system and the orbiter drag chute system), and the X-38. The B-52 served as the launch vehicle on 106 X-15 flights and flew a total of 159 captive-carry and launch missions in support of that program from June 1959 to October 1968. Information gained from the highly successful X-15 program contributed to the Mercury, Gemini, and Apollo human spaceflight programs as well as space shuttle development. Between 1966 and 1975, the B-52 served as the launch aircraft for 127 of the 144 wingless lifting body flights. In the 1970s and 1980s, the B-52 was the launch aircraft for several aircraft at what is now the Dryden Flight Research Center, Edwards, California, to study spin-stall, high-angle-of attack, and maneuvering characteristics. These included the 3/8-scale F-15/spin research vehicle (SRV), the HiMAT (Highly Maneuverable Aircraft Technology) research vehicle, and the DAST (drones for aerodynamic and structural testing). The aircraft supported the development of parachute recovery systems used to recover the space shuttle solid rocket booster casings. It also supported eight orbiter (space shuttle) drag chute tests in 1990. In addition, the B-52 served as the air launch platform for the first six Pegasus space boosters. During its many years of service, the B-52 has undergone several modifications. The first major modification was made by North American Aviation (now part of Boeing) in support of the X-15 program. This involved creating a launch-panel-operator station for monitoring the status of the test vehicle being carried, cutting a large notch in the right inboard wing flap to accommodate the vertical tail of the X-15 aircraft, and installing a wing pylon that enables the B-52 to carry research vehicles and test articles to be air-launched/dropped. Located on the right wing, between the inboard engine pylon and the fuselage, this wing pylon was subjected to extensive testing prior to its use. For each test vehicle the B-52 carried, minor changes were made to the launch-panel operator's station. Built originally by the Boeing Company, the NASA B-52 is powered by eight Pratt & Whitney J57-19 turbojet engines, each of which produce 12,000 pounds of thrust. The aircraft's normal launch speed has been Mach 0.8 (about 530 miles per hour) and its normal drop altitude has been 40,000 to 45,000 feet. It is 156 feet long and has a wing span of 185 feet. The heaviest load it has carried was the No. 2 X-15 aircraft at 53,100 pounds. Project manager for the aircraft is Roy Bryant.

1997-01-01

347

Noise reduction performance of smart panels incorporating piezoelectric shunt damping  

Microsoft Academic Search

Performance test for transmitted noise reduction of smart panels is experimentally studied. Smart panel is a panel that is utilized a passive material at high frequencies and piezoelectric shunt damping at low frequencies. A multi-mode shunt damping is investigated by using the tuning method based on measured electrical impedance. Three configurations of smart panels are tested: single panel, single panel

Jaehwan Kim; Jin-Young Choi; Ran H. Cabell

2002-01-01

348

Solar collector mounting and support apparatus  

SciTech Connect

A solar collector system is described of the type having a movable surface for receiving solar radiation having improved means for rotatably supporting the movable surface and for rotating the collector surface. A support axle for the collector includes a ball at one end which is carried within a cylindrical sleeve in the solar collector to support the weight of the collector. A torque transmitting arm comprising a flexible flat strip is connected at one end to the axle and at the other end to the collector surface. An improved rotational drive mechanism includes a first sprocket wheel carried on the axle and a second sprocket wheel supported on a support pylon with a drive chain engaging both sprockets. A double acting piston also supported by the pylon is coupled to the chain so that the chain may be driven by a hydraulic control system to rotate the collector surfaces as required. An improved receiver tube support ring is also provided for use with the improved mounting and support apparatus to improve overall efficiency by reducing thermal losses.

Hutchison, J.A.

1981-12-22

349

Virtual sine arm kinematic mount system  

SciTech Connect

A novel kinematic mount system for a vertical focusing mirror of the soft x-ray spectroscopy beamline at the Advanced Photon Source is described. The system contains three points in a horizontal plane. Each point consists of two horizontal linear precision stages, a spherical ball bearing, and a vertical precision stage. The horizontal linear stages are aligned orthogonally and are conjoined by a spherical ball bearing, supported by the vertical linear stage at each point. The position of each confined horizontal stage is controlled by a motorized micrometer head by spring-loading the flat tip of the micrometer head onto a tooling ball fixing on the carriage of the stage. A virtual sine arm is formed by tilting the upstream horizontal stage down and the two downstream horizontal stages up by a small angle. The fine pitch motion is achieved by adjusting the upstream stage. This supporting structure is extremely steady due to a relatively large span across the supporting points and yields extremely high resolution on the pitch motion. With a one degree tilt and a microstepping motor, the authors achieved a 0.4 nanoradian resolution on the mirror pitch motion.

Xu, Z.; Randall, K.J. [Argonne National Lab., IL (United States). Advanced Photon Source

1997-09-01

350

Electro-optic component mounting device  

DOEpatents

A technique is provided for integrally mounting a device such as an electro-optic device (50) in a transmission line to avoid series resonant effects. A center conductor (52) of the transmission line has an aperture (58) formed therein for receiving the device (50). The aperture (58) splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface (54), which is spaced apart from the center conductor with a dielectric material (56). One set of electrodes formed on the surface of the electro-optic device (50) is directly connected to the center conductor 52 and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface (54). The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage ( 60) formed therein for passage of optical signals to an electro-optic device.

Gruchalla, Michael E. (Albuquerque, NM)

1994-01-01

351

Overview of Mount Washington Icing Sensors Project  

NASA Technical Reports Server (NTRS)

NASA, the FAA, the Department of Defense, the National Center for Atmospheric Research and NOAA are developing techniques for retrieving cloud microphysical properties from a variety of remote sensing technologies. The intent is to predict aircraft icing conditions ahead of aircraft. The Mount Washington Icing Sensors Project MWISP), conducted in April, 1999 at Mt. Washington, NH, was organized to evaluate technologies for the prediction of icing conditions ahead of aircraft in a natural environment, and to characterize icing cloud and drizzle environments. April was selected for operations because the Summit is typically in cloud, generally has frequent freezing precipitation in spring, and the clouds have high liquid water contents. Remote sensing equipment, consisting of radars, radiometers and a lidar, was placed at the base of the mountain, and probes measuring cloud particles, and a radiometer, were operated from the Summit. NASA s Twin Otter research aircraft also conducted six missions over the site. Operations spanned the entire month of April, which was dominated by wrap-around moisture from a low pressure center stalled off the coast of Labrador providing persistent upslope clouds with relatively high liquid water contents and mixed phase conditions. Preliminary assessments indicate excellent results from the lidar, radar polarimetry, radiosondes and summit and aircraft measurements.

Ryerson, Charles C.; Politovich, Marcia K.; Rancourt, Kenneth L.; Koenig, George G.; Reinking, Roger F.; Miller, Dean R.

2003-01-01

352

The Mount Kozak magmatic complex, Western Anatolia  

NASA Astrophysics Data System (ADS)

The Mount Kozak igneous complex is located close to the towns of Ayval?k, Bergama and Burhaniye in the Western Anatolia, Turkey. Magmatic activity occurred during the Late Oligocene-Early Miocene, beginning with the emplacement of the Kozak pluton. Sheet intrusive rocks formed around it coevally. They are surrounded by the volcanic rocks, partly contemporaneously with the emplacement of the granitic rocks during the Early Miocene. The Upper Oligocene-Lower Miocene magmatic rocks of the Kozak region are represented by a high-K, calc-alkaline suite of predominantly intermediate and acidic composition. Their geochemical characteristics suggest that the magmas are hybrid, and were formed from a similar source, representing mantle-derived magmas, contaminated by crustal materials. The cogenetic plutonic rocks, the hypabyssal rocks and the overlying volcanic associations are related to one another in space and time, and appear to have been connected to a shallow level granitic intrusion in a caldera collapse setting. The calc-alkaline magmatic activity waned during the Middle Miocene. When the volcanism was rejuvenated during the Late Miocene-Pliocene, alkaline basalt lavas were formed as fissure eruptions.

Altunkaynak, ?.; Y?lmaz, Y.

1998-10-01

353

Potential climate impact of Mount Pinatubo eruption  

NASA Technical Reports Server (NTRS)

The GISS global-climate model is used to make a preliminary estimate of Mount Pinatubo's climate impact. Assuming the aerosol optical depth is nearly twice as great as for the 1982 El Chichon eruption, the model forecasts a dramatic but temporary break in recent global warming trends. The simulations indicate that Pinatubo occurred too late in the year to prevent 1991 from becoming one of the warmest years in instrumental records, but intense aerosol cooling is predicted to begin late in 1991 and to maximize late in 1992. The predicted cooling is sufficiently large that by mid 1992 it should even overwhelm global warming associated with an El Nino that appears to be developing, but the El Nino could shift the time of minimum global temperature into 1993. The model predicts a return to record warm levels in the later 1990s. The effect is estimated of the predicted global cooling on such practical matters as the severity of the coming Soviet winter and the dates of cherry blossoming next spring.

Hansen, James; Lacis, Andrew; Ruedy, Reto; Sato, Makiko

1992-01-01

354

Electro-optic component mounting device  

DOEpatents

A technique is provided for integrally mounting a device such as an electro-optic device in a transmission line to avoid series resonant effects. A center conductor of the transmission line has an aperture formed therein for receiving the device. The aperture splits the center conductor into two parallel sections on opposite sides of the device. For a waveguide application, the center conductor is surrounded by a conductive ground surface which is spaced apart from the center conductor with a dielectric material. One set of electrodes formed on the surface of the electro-optic device is directly connected to the center conductor and an electrode formed on the surface of the electro-optic device is directly connected to the conductive ground surface. The electrodes formed on the surface of the electro-optic device are formed on curved sections of the surface of the device to mate with correspondingly shaped electrodes on the conductor and ground surface to provide a uniform electric field across the electro-optic device. The center conductor includes a passage formed therein for passage of optical signals to an electro-optic device. 10 figs.

Gruchalla, M.E.

1994-09-13

355

Potential climate impact of Mount Pinatubo eruption  

NASA Astrophysics Data System (ADS)

We use the GISS global climate model to make a preliminary estimate of Mount Pinatubo's climate impact. Assuming the aerosol optical depth is nearly twice as great as for the 1982 El Chichon eruption, the model forecasts a dramatic but temporary break in recent global warming trends. The simulations indicate that Pinatubo occurred too late in the year to prevent 1991 from becoming one of the warmest years in instrumental records, but intense aerosol cooling is predicted to begin late in 1991 and to maximize late in 1992. The predicted cooling is sufficiently large that by mid 1992 it should even overwhelm global warming associated with an El Nino that appears to be developing, but the El Nino could shift the time of minimum global temperature into 1993. The model predicts a return to record warm levels in the later 1990s. We estimate the effect of the predicted global cooling on such practical matters as the severity of the coming Soviet winter and the dates of cherry blossoming next spring, and discuss caveats which must accompany these preliminary simulations.

Hansen, James; Lacis, Andrew; Ruedy, Reto; Sato, Makiko

356

Improvement of the Useful Temperature Range of Rubber Shock Mounts.  

National Technical Information Service (NTIS)

Shock mounts prepared from compounds based on emulsion polymerized SBR, solution-polymerized SBR, and high-strength silicone elastomers were tested under shear loads over a temperature range from -67F to +158F. Silicone mounts exhibit negligible change in...

J. D. Ruby

1970-01-01

357

Climatological analysis of precipitation patterns over Mount Baldo (Southern Alps)  

Microsoft Academic Search

The mountain range of Mount Baldo is an elongated chain in the southern Prealps. Bounded on the western side by Lake Garda, and on the eastern side by the parallel-running deep furrow of the River Adige Valley, the whole Mount Baldo range stretches in the direction southwest-northeast for about 40 km, from the southern highlands of Caprino Veronese up to

G. Poletti; D. Zardi; M. de Franceschi

2010-01-01

358

Hyperstereopsis in helmet-mounted NVDs: slope perception  

Microsoft Academic Search

Modern helmet-mounted night vision devices, such as the Thales TopOwl helmet, project imagery from intensifiers mounted on the sides of the helmet onto the helmet faceplate. This produces a situation of hyperstereopsis in which binocular disparities are magnified. This has the potential to distort the perception of slope in depth (an important cue to landing), because the slope cue provided

Geoffrey W. Stuart; Patrick Flanagan; Peter Gibbs

2007-01-01

359

Hyperstereopsis in helmet-mounted NVDs: time to contact estimation  

Microsoft Academic Search

The side mounting of the night-vision sensors on some helmet-mounted systems creates a situation of hyperstereopsis in which the binocular cues available to the operator are exaggerated such that distances around the point of fixation are increased. For a moving surface approaching the observer, the increased apparent distance created by hyperstereopsis should result in greater apparent speed of approach towards

Patrick Flanagan; Geoffrey W. Stuart; Peter Gibbs

2007-01-01

360

Hyperstereopsis in helmet-mounted NVDs: absolute distance perception  

Microsoft Academic Search

Modern helmet-mounted night vision devices, such as the Thales TopOwl helmet, project imagery from intensifiers mounted on the side of the helmet onto the helmet faceplate. The increased separation of the cameras induces hyperstereopsis - the exaggeration of the stereoscopic disparities that support the perception of relative depth around the point of fixation. Increased camera separation may also affect absolute

Patrick Flanagan; Geoffrey W. Stuart; Peter Gibbs

2007-01-01

361

A Modal Analysis of Lamellar Diffraction Gratings in Conical Mountings  

Microsoft Academic Search

A rigorous modal analysis of lamellar gratings, i.e. gratings having rectangular grooves, in conical mountings is presented. It is an extension of the analysis of Botten et al. which considered non-conical mountings. A key step in the extension is a decomposition of the electromagnetic field in the grating region into two orthogonal components. A computer program implementing this extended modal

Lifeng Li

1993-01-01

362

Maintenance Procedure Display: Head Mounted Display (HMD) Evaluations  

NASA Technical Reports Server (NTRS)

A viewgraph presentation describing maintenance procedures for head mounted displays is shown. The topics include: 1) Study Goals; 2) Near Eye Displays (HMDs); 3) Design; 4) Phase I-Evaluation Methods; 5) Phase 1 Results; 6) Improved HMD Mounting; 7) Phase 2 -Evaluation Methods; 8) Phase 2 Preliminary Results; and 9) Next Steps.

Whitmore, Milrian; Litaker, Harry L., Jr.; Solem, Jody A.; Holden, Kritina L.; Hoffman, Ronald R.

2007-01-01

363

AERIAL VIEW, LAUREL HILL CEMETERY (LEFT) AND MOUNT PEACE CEMETERY ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

AERIAL VIEW, LAUREL HILL CEMETERY (LEFT) AND MOUNT PEACE CEMETERY (RIGHT). LOCATED ACROSS RIDGE AVENUE FROM LAUREL HILL CEMETERY, MOUNT PEACE CEMETERY WAS FOUNDED BY THE ODD FELLOWS CEMETERY COMPANY IN 1865. - Laurel Hill Cemetery, 3822 Ridge Avenue, Philadelphia, Philadelphia County, PA

364

Adapter plate assembly for adjustable mounting of objects  

SciTech Connect

An object mounting adapted assembly, for securely mounting an object in readily rejustable precise orientation with respect to a mounting surface containing an array of affixation apertures is described comprising: an adapter member, formed to have a base portion having a first surface shaped to contactingly match the mounting surface, the base portion being provided with at least one slot aperture having a length longer than its width, and the adapter member having an object holding portion to securely hold the object mounted thereat; a generally cylindrical locking member, having a first cylindrical portion with a diameter slightly smaller than the width of the slot aperture and a length smaller than the thickness of the base portion around the slot for freely translating along and rotating within the slot aperture during use; the locking member having a second portion having a dimension, normal to the diameter of the axis of the first cylindrical portion, larger than the width of the slot aperture; and the locking member also having a through aperture offset from and parallel to the axis of the first cylindrical portion thereof; and connecting means, passing through the aperture in the locking member and at least one of the affixation apertures of the mounting surface, for connecting the adapter member to the mounting surface with the adapter member clamps between the mounting surface and the second portion of the locking member.

Blackburn, R.S.

1987-08-18

365

Remote, mobile telemedicine: the satellite transmission of medical data from Mount Logan.  

PubMed

The purpose of this investigation was to demonstrate the potential of remote, mobile telemedicine during a four-week, high-altitude mountaineering expedition to Mount Logan, Canada's highest summit. Using a mobile satellite terminal and a laptop computer (both powered by a photovoltaic solar panel), ECG tracings and blood pressure measurements, in addition to colour images, short-segment video and audio clips were transmitted during the course of the ascent. The data were transmitted via a mobile communications satellite to a ground station in Ottawa, a distance of over 4000 km. The data were then transferred to the public switched data network and delivered to the University of Ottawa Heart Institute for analysis. Similarly, data were transmitted from the ground station to the expedition team on Mount Logan throughout the ascent. Using this technique, medical diagnosis and emergency care can be facilitated in extreme and isolated locations lacking a telecommunications infrastructure. Such technology has applications in developing countries, disaster response efforts, remote civilian and military operations, and in space operations. PMID:9218396

Otto, C; Pipe, A

1997-01-01

366

Measurements of slope distances and vertical angles at Mount Baker and Mount Rainier, Washington, Mount Hood and Crater Lake, Oregon, and Mount Shasta and Lassen Peak, California, 1980-1984  

USGS Publications Warehouse

Personnel of the U.S.Geological Survey's Cascades Volcano Observatory established trilateration networks at Mount Baker, Mount Rainier, Mount Hood, Crater Lake, Mount Shasta, and Lassen Peak in 1980-1984. These networks are capable of detecting changes in slope distance of several centimeters or more. The networks were established to provide baseline information on potentially active volcanoes and were designed along guidelines found useful at Mount St. Helens. Periodic reoccupation of the networks is planned as part of the overall monitoring program of Cascades volcanoes. Methodology, slope distance and vertical angle data, maps of the networks, and benchmark descriptions are presented in this report. Written benchmark descriptions are augmented by photographs, which we have found by experience to very useful in relocating the marks. All repeat measurements at the six volcanoes are probably within measurement error.

Chadwick, W. W.

1985-01-01

367

Automated solar panel assembly line  

NASA Technical Reports Server (NTRS)

The initial stage of the automated solar panel assembly line program was devoted to concept development and proof of approach through simple experimental verification. In this phase, laboratory bench models were built to demonstrate and verify concepts. Following this phase was machine design and integration of the various machine elements. The third phase was machine assembly and debugging. In this phase, the various elements were operated as a unit and modifications were made as required. The final stage of development was the demonstration of the equipment in a pilot production operation.

Somberg, H.

1981-01-01

368

Decadal Survey: Planetary Rings Panel  

NASA Astrophysics Data System (ADS)

The National Research Council's Committee on Planetary and Lunar Exploration(COMPLEX) met earlier this year to begin the organization of a major activity, "A New Strategy for Solar System Exploration." Several members of the planetary rings community formed an ad hoc panel to discuss the current state and future prospects for the study of planetary rings. In this paper we summarize fundamental questions of ring science, list the key science questions expected to occupy the planetary rings community for the decade 2003-2013, outline the initiatives, missions, and other supporting activities needed to address those questions, and recommend priorities.

Gordon, M. K.; Cuzzi, J. N.; Lissauer, J. J.; Poulet, F.; Brahic, A.; Charnoz, S.; Ferrari, C.; Burns, J. A.; Nicholson, P. D.; Durisen, R. H.; Rappaport, N. J.; Spilker, L. J.; Yanamandra-Fisher, P.; Bosh, A. S.; Olkin, C.; Larson, S. M.; Graps, A. L.; Krueger, H.; Black, G. J.; Festou, M.; Karjalainen, R.; Salo, H. J.; Murray, C. D.; Showalter, M. R.; Dones, L.; Levison, H. F.; Namouni, F.; Araki, S.; Lewis, M. C.; Brooks, S.; Colwell, J. E.; Esposito, L. W.; Horanyi, M.; Stewart, G. R.; Krivov, A.; Schmidt, J.; Spahn, F.; Hamilton, D. P.; Giuliatti-Winter, S.; French, R. G.

2001-11-01

369

Perspective with Landsat Overlay, Mount Kilimanjaro, Tanzania  

NASA Technical Reports Server (NTRS)

Mount Kilimanjaro (Kilima Njaro or 'shining mountain' in Swahili), the highest point in Africa, reaches 5,895 meters (19,340 feet) above sea level, tall enough to maintain a permanent snow cap despite being just 330 kilometers (210 miles) south of the equator. It is the tallest free-standing mountain on the Earth's land surface world, rising about 4,600 meters (15,000 feet) above the surrounding plain. Kilimanjaro is a triple volcano (has three peaks) that last erupted perhaps more than 100,000 years ago but still exudes volcanic gases. It is accompanied by about 20 other nearby volcanoes, some of which are seen to the west (left) in this view, prominently including Mount Meru, which last erupted only about a century ago. The volcanic mountain slopes are commonly fertile and support thick forests, while the much drier grasslands of the plains are home to elephants, lions, and other savanna wildlife.

This 3-D perspective view was generated using topographic data from the Shuttle Radar Topography Mission (SRTM), a Landsat 7 satellite image, and a false sky. Topographic expression is vertically exaggerated two times.

Landsat has been providing visible and infrared views of the Earth since 1972. SRTM elevation data matches the 30-meter (98-foot) resolution of most Landsat images and will substantially help in analyzing the large and growing Landsat image archive, managed by the U.S. Geological Survey (USGS).

Elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect 3-D measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter (approximately 200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between NASA, the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Earth Science Enterprise, Washington, D.C.

Size: View width 124 kilometers (77 miles), View distance 166 kilometers (103 miles) Location: 3 degrees South latitude, 37 degrees East longitude Orientation: View North, 2 degrees below horizontal, 2 times vertical exaggeration Image Data: Landsat Bands 3, 2+4, 1 as red, green, blue, respectively. Original Data Resolution: SRTM 1 arc-second (30 meters or 98 feet), Thematic Mapper 30 meters (98 feet) Date Acquired: February 2000 (SRTM), A February 21, 2000 (Landsat 7)

2002-01-01

370

LUCIE ROV-mounted laser imaging system  

NASA Astrophysics Data System (ADS)

A careful analysis of the scattering and absorption data base of the waters off the coasts of Canada has persuaded us that a laser assisted camera system will have a significantly improved viewing performance over conventional systems. With this purpose in mind, we designed and built the laser underwater camera image enhancer system (LUCIE). The system uses a 2 kHz diode-pumped frequency-doubled Nd:YAG laser as an illumination source. The light is collected by a 10 cm diameter zoom lens. The detector is a gated image intensifier with a 7 ns gate and a gain which is continuously variable from 500 to 1,000,000. The gate delay is adjusted to the focal distance of the lens system. This ensures that only the scattering occurring near the target is seen by the camera system. In the strongly scattering waters typical of harbor approaches this system has a range of from 4 to 6 times that of a conventional camera with floodlights. The system has been tested in a water tank facility at DREV and has been mounted on the HYSUB 5000 remotely operated vehicle (ROV) for sea trials. The images from the system are sent to the surface via a high performance analog link with a bandwidth of 8 MHz. The images are processed to remove the effect of marine snow. This processing and the high repetition rate of the laser, which ensures a lack of speckle, both contribute significantly to the clarity of the images. The NEARSCAT transmissometer- nephelometer system is operated simultaneously with the LUCIE system and this allows us to have the fundamental data necessary for evaluating the performance of the imaging system and validating transmission, scattering, and imaging models.

Fournier, Georges R.; Bonnier, Deni; Forand, J. Luc; Pace, Paul W.

1992-12-01

371

Development of a Plasma Panel Muon Detector  

SciTech Connect

A radiation detector technology based on Plasma Display Panels (PDP), the underlying engine of panel plasma television displays is being investigated. Emerging from this well established television technology is the Plasma Panel Sensor (PPS), a novel variant of the micropattern radiation detector. The PPS is fundamentally a fast, high resolution detector comprised of an array of plasma discharge cells operating in a hermetically sealed gas mixture. We report on the PPS development effort, including proof-of-principle results of laboratory signal observations.

Levin, Daniel S. [University of Michigan; Ball, Robert [University of Michigan; Beene, James R [ORNL; Benhammou, Yan [Tel Aviv University; Chapman, J. Wehrley [University of Michigan; Dai, T. [University of Michigan; Etzion, E [Tel Aviv University; Friedman, Dr. Peter S. [Integrated Sensors, LLC; Ben Moshe, M. [Tel Aviv University; Silver, Yiftah [Tel Aviv University; Varner Jr, Robert L [ORNL; Weaverdyck, Curtis [University of Michigan; White, Sebastion [Brookhaven National Laboratory (BNL); Zhou, Bing [University of Michigan

2010-01-01

372

Development of a plasma panel muon detector  

Microsoft Academic Search

A radiation detector technology based on plasma display panels (PDPs), the underlying engine of panel plasma television displays, is being investigated. Emerging from this well-established television technology is the Plasma Panel Sensor (PPS), a novel variant of the micro-pattern radiation detector. The PPS is fundamentally a fast, high-resolution detector comprised of an array of plasma discharge cells, operating in a

D. S. Levin; R. Ball; J. R. Beene; Y. Benhammou; J. W. Chapman; T. Dai; E. Etzion; P. S. Friedman; M. Ben Moshe; Y. Silver; R. L. Varner; C. Weaverdyck; S. White; B. Zhou

2011-01-01

373

A novel triple-actuating mechanism of an active air mount for vibration control of precision manufacturing machines: experimental work  

NASA Astrophysics Data System (ADS)

With the goal of vibration control and isolation in a clean room, we propose a new type of air mount which consists of pneumatic, electromagnetic (EM), and magnetorheological (MR) actuators. The air mount is installed below a semiconductor manufacturing machine to reduce the adverse effects caused by unwanted vibration. The proposed mechanism integrates the forces in a parallel connection of the three actuators. The MR part is designed to operate in an air spring in which the EM part is installed. The control logic is developed with a classical method and a switching mode to avoid operational mismatch among the forces developed. Based on extended microprocessors, a portable, embedded controller is installed to execute both nonlinear logic and digital communication with the peripherals. The pneumatic forces constantly support the heavy weight of an upper structure and maintain the level of the air mount. The MR damper handles the transient response, while the EM controller reduces the resonance response, which is switched mutually with a threshold. Vibration is detected by laser displacement sensors which have submicron resolution. The impact test results of three tons load weight demonstrate practical feasibility by showing that the proposed triple-actuating mechanism can reduce the transient response as well as the resonance in the air mount, resulting in accurate motion of the semiconductor manufacturing machine.

Kim, Hyung-Tae; Kim, Cheol-Ho; Choi, Seung-Bok; Moon, Seok-Jun; Song, Won-Gil

2014-07-01

374

Panel Discussion i: Higgs Boson  

NASA Astrophysics Data System (ADS)

Questions to discuss: * If the SM with elementary Higgs field is completely confirmed with the discovery of a heavy scalar boson at LHC and Tevatron? * Does the Higgs mass value of 126 GeV point to the need of new physics below the Planck scale? * Do we need the next Higgs factory to solve problems with its identification? * How can we distinguish extended Higgs sector from the standard one as well as from the composite Higgs?

Kiselev, V.; Arbuzov, B.; Bernardi, G.; Knochel, A.; Nikolaidou, R.; Riva, F.

2014-03-01

375

Optimal design of engine mount using an artificial life algorithm  

NASA Astrophysics Data System (ADS)

When designing fluid mounts, design parameters can be varied in order to obtain a desired notch frequency and notch depth. The notch frequency is a function of the mount parameters and is typically selected by the designer to occur at the vibration disturbance frequency. Since the process of choosing these parameters can involve some trial and error, it seems to be a great application for obtaining optimal performance of the mount. Many combinations of parameters are possible to give us the desired notch frequency, but the question is which combination provides the lowest depth? Therefore, an automatic optimal technique is needed to optimize the fluid mount. In this study, the enhanced artificial life algorithm (EALA) is applied to minimizing transmissibility of a fluid mount at the desired notch frequency, and at the notch and resonant frequencies. The present hybrid algorithm is the synthesis of a conventional artificial life algorithm with the random tabu search (R-tabu) method and then, the time for searching optimal solution could be reduced from the conventional artificial life algorithm and its solution accuracy became better. The results show that the performance of the optimized mount by using the hybrid algorithm has been better than that of the conventional fluid mount.

Ahn, Young Kong; Song, Jin Dae; Yang, Bo-Suk

2003-03-01

376

Silicon Carbide Mounts for Fabry-Perot Interferometers  

NASA Technical Reports Server (NTRS)

Etalon mounts for tunable Fabry- Perot interferometers can now be fabricated from reaction-bonded silicon carbide structural components. These mounts are rigid, lightweight, and thermally stable. The fabrication of these mounts involves the exploitation of post-casting capabilities that (1) enable creation of monolithic structures having reduced (in comparison with prior such structures) degrees of material inhomogeneity and (2) reduce the need for fastening hardware and accommodations. Such silicon carbide mounts could be used to make lightweight Fabry-Perot interferometers or could be modified for use as general lightweight optical mounts. Heretofore, tunable Fabry-Perot interferometer structures, including mounting hardware, have been made from the low-thermal-expansion material Invar (a nickel/iron alloy) in order to obtain the thermal stability required for spectroscopic applications for which such interferometers are typically designed. However, the high mass density of Invar structures is disadvantageous in applications in which there are requirements to minimize mass. Silicon carbide etalon mounts have been incorporated into a tunable Fabry-Perot interferometer of a prior design that originally called for Invar structural components. The strength, thermal stability, and survivability of the interferometer as thus modified are similar to those of the interferometer as originally designed, but the mass of the modified interferometer is significantly less than the mass of the original version.

Lindemann, Scott

2011-01-01

377

Uncertainties in predicting solar panel power output  

NASA Technical Reports Server (NTRS)

The problem of calculating solar panel power output at launch and during a space mission is considered. The major sources of uncertainty and error in predicting the post launch electrical performance of the panel are considered. A general discussion of error analysis is given. Examples of uncertainty calculations are included. A general method of calculating the effect on the panel of various degrading environments is presented, with references supplied for specific methods. A technique for sizing a solar panel for a required mission power profile is developed.

Anspaugh, B.

1974-01-01

378

Development of Electrostatically Clean Solar Array Panels  

NASA Technical Reports Server (NTRS)

Certain missions require Electrostatically Clean Solar Array (ECSA) panels to establish a favorable environment for the operation of sensitive scientific instruments. The objective of this program was to demonstrate the feasibility of an ECSA panel that minimizes panel surface potential below 100mV in LEO and GEO charged particle environments, prevents exposure of solar cell voltage and panel insulating surfaces to the ambient environment, and provides an equipotential, grounded structure surrounding the entire panel. An ECSA panel design was developed that uses a Front Side Aperture-Shield (FSA) that covers all inter-cell areas with a single graphite composite laminate, composite edge clips for connecting the FSA to the panel substrate, and built-in tabs that interconnect the FSA to conductive coated coverglasses using a conductive adhesive. Analysis indicated the ability of the design to meet the ECSA requirements. Qualification coupons and a 0.5m x 0.5m prototype panel were fabricated and tested for photovoltaic performance and electrical grounding before and after exposure to acoustic and thermal cycling environments. The results show the feasibility of achieving electrostatic cleanliness with a small penalty in mass, photovoltaic performance and cost, with a design is structurally robust and compatible with a wide range of current solar panel technologies.

Stern, Theodore G.

2000-01-01

379

Apparent Brecciation Gradient, Mount Desert Island, Maine  

NASA Astrophysics Data System (ADS)

Mount Desert Island, Maine, comprises a shallow level, Siluro-Devonian igneous complex surrounded by a distinctive breccia zone ("shatter zone" of Gilman and Chapman, 1988). The zone is very well exposed on the southern and eastern shores of the island and provides a unique opportunity to examine subvolcanic processes. The breccia of the Shatter Zone shows wide variation in percent matrix and clast, and may represent a spatial and temporal gradient in breccia formation due to a single eruptive or other catastrophic volcanic event. The shatter zone was divided into five developmental stages based on the extent of brecciation: Bar Harbor Formation, Sols Cliffs breccia, Seeley Road breccia, Dubois breccia, and Great Head breccia. A digital camera was employed to capture scale images of representative outcrops using a 0.5 m square Plexiglas frame. Individual images were joined in Adobe Photoshop to create a composite image of each outcrop. The composite photo was then exported to Adobe Illustrator, which was used to outline the clasts and produce a digital map of the outcrop for analysis. The fractal dimension (Fd) of each clast was calculated using NIH Image and a Euclidean distance mapping method described by Bérubé and Jébrak (1999) to quantify the morphology of the fragments, or the complexity of the outline. The more complex the fragment outline, the higher the fractal dimension, indicating that the fragment is less "mature" or has had less exposure to erosional processes, such as the injection of an igneous matrix. Sols Cliffs breccia has an average Fd of 1.125, whereas Great Head breccia has an average Fd of 1.040, with the stages between having intermediate values. The more complex clasts of the Sols Cliffs breccia with a small amount (26.38%) of matrix material suggests that it is the first stage in a sequence of brecciation ending at the more mature, matrix-supported (71.37%) breccia of Great Head. The results of this study will be used to guide isotopic and geochemical analysis of the matrix igneous material in the attempt to better understand the dynamic processes that occur in subvolcanic environments and the mechanisms involved in breccia formation.

Hawkins, A. T.; Johnson, S. E.

2004-05-01

380

High-performance mount for the SOAR telescope project  

NASA Astrophysics Data System (ADS)

The telescope mount is an important component for the success of the Southern Observatory for Astronomical Research (SOAR) scientific mission. The SOAR telescope structure must have the best combination of extremely high structural stiffness, low torque bearings, sophisticated encoder pick-offs and smooth drive trains so that the servo system can achieve closed loop control in the sub-arc second regime. While challenging, these parameters are achievable. Once assembled, this mount will enable the telescope to have superior image viewing quality and large payload capacities. This paper will address the telescope mount structure, drive system performance, structural analysis and thermal design.

Hermann, Kerstan G.; Finley, David S.; Gienger, Al

2000-08-01

381

Methods and apparatus for radially compliant component mounting  

DOEpatents

Methods and apparatus for a mounting assembly for a liner of a gas turbine engine combustor are provided. The combustor includes a combustor liner and a radially outer annular flow sleeve. The mounting assembly includes an inner ring surrounding a radially outer surface of the liner and including a plurality of axially extending fingers. The mounting assembly also includes a radially outer ring coupled to the inner ring through a plurality of spacers that extend radially from a radially outer surface of the inner ring to the outer ring.

Bulman, David Edward (Cincinnati, OH); Darkins, Jr., Toby George (Loveland, OH); Stumpf, James Anthony (Columbus, IN); Schroder, Mark S. (Greenville, SC); Lipinski, John Joseph (Simpsonville, SC)

2012-03-27

382

Design of infrared astronomical satellite /IRAS/ primary mirror mounts  

NASA Technical Reports Server (NTRS)

The design of an operational mount to rigidly secure the primary mirror to its baseplate without the introduction of figure error always proves to be a major task on diffraction limited optical systems. A summary of the design of the Infrared Astronomical Satellite (IRAS) primary mirror mount is given. The mirror was designed to be alligned and tested at room temperature and operated in a zero 'g' field at temperatures of 2K. To minimize overstressing, a stiffness requirement of greater than 150 Hz was required for cold launch and room temperature vibration acceptance testing. Additional isolation was required to minimize strains, introduced via the mounting base, due to thermal and mechanical distortions.

Schreibman, M.; Young, P.

1980-01-01

383

The azimuth axes mechanisms for the ATST telescope mount assembly  

NASA Astrophysics Data System (ADS)

The ATST Telescope Mount Assembly uses for the Azimuth axes mechanisms bearing and drive technologies as developed for the machine tool industry. An overview on the ATST mount project and design and its verification by analysis, simulation and tests are given in two separate papers of this conference. This paper describes the main design and accuracy features of the bearing and drive subsystems, their adaption to the ATST mount and their influence on the telescope structural design, and gives a hint to the challenges in the upcoming manufacturing, installation and commissioning phases.

Kärcher, Hans J.; Weis, Ulrich; Dreyer, Oliver; Jeffers, Paul F.; Bonomi, Giovanni

2012-09-01

384

Energy efficiency improvements for refrigerator/freezers using prototype doors containing gas-filled panel insulating systems  

SciTech Connect

Energy efficiency improvements in domestic refrigerator/freezers, are directly influenced by the overall thermal performance of the cabinet and doors. An advanced system for reducing heat gain is Gas-Filled Panel thermal insulation technology. Gas-Filled Panels contain a low-conductivity, inert gas at atmospheric pressure and employ a reflective baffle to suppress radiation and convection within the gas. This paper presents energy use test results for a 1993 model 500 liter top mount refrigerator/freezer operated with its original doors and with a series of alternative prototype doors. Gas-Filled Panel technology was used in two types of prototype refrigerator/freezer doors. In one design, panels were used in composite with foam in standard metal door pans; this design yielded no measurable energy savings. In the other design, special polymer door pans were fitted with panels that fill nearly all of the available insulation volume; this design yielded a 6.5% increase in energy efficiency for the entire refrigerator/freezer. The EPA Refrigerator Analysis computer program has been used to predict the change in daily energy consumption with the alternative doors. The computer model also projects a 25% energy efficiency improvement for a refrigerator/freezer that would use Gas-Filled Panel insulation throughout the cabinet as well as the doors.

Griffith, B.; Arasteh, D.; Tuerler, D.

1995-01-01

385

Using commercial AMLCD panels for a wide range of dual-use applications  

NASA Astrophysics Data System (ADS)

This paper describes the application of commercially available, active matrix liquid crystal panels to a wide variety of environments both commercial and military. Such environments include the dashboard of a city transportation bus and agricultural vehicle, the cockpit of a commercial jet airliner, and hard mounted on a howitzer field artillery piece. Each environment will be discussed and then a comparison will be made between the environments and how they relate to the display design. The application of finite element analysis to the design methodology will also be discussed. Test results will then be presented for the various applications as well as results of usage in the field. Design techniques of ruggedization for utilization of the same panels in other severe environments such as Army tanks will also be discussed.

Seinfeld, Robert D.; Herman, Robert

1999-08-01

386

6. COMPRESSOR CONTROL PANELS: AT LEFT, 6,000 P.S.I. PANEL, CIRCA ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

6. COMPRESSOR CONTROL PANELS: AT LEFT, 6,000 P.S.I. PANEL, CIRCA 1957; AT RIGHT, FACING CAMERA, 10,000 P.S.I. PANEL. - Edwards Air Force Base, Air Force Rocket Propulsion Laboratory, Helium Compression Plant, Test Area 1-115, intersection of Altair & Saturn Boulevards, Boron, Kern County, CA

387

Correlation Results for a Mass Loaded Vehicle Panel Test Article Finite Element Models and Modal Survey Tests  

NASA Technical Reports Server (NTRS)

High-fidelity Finite Element Models (FEMs) were developed to support a recent test program at Marshall Space Flight Center (MSFC). The FEMs correspond to test articles used for a series of acoustic tests. Modal survey tests were used to validate the FEMs for five acoustic tests (a bare panel and four different mass-loaded panel configurations). An additional modal survey test was performed on the empty test fixture (orthogrid panel mounting fixture, between the reverb and anechoic chambers). Modal survey tests were used to test-validate the dynamic characteristics of FEMs used for acoustic test excitation. Modal survey testing and subsequent model correlation has validated the natural frequencies and mode shapes of the FEMs. The modal survey test results provide a basis for the analysis models used for acoustic loading response test and analysis comparisons

Maasha, Rumaasha; Towner, Robert L.

2012-01-01

388

Panel Discussion: WIYN Observatory: Partnerships  

NASA Astrophysics Data System (ADS)

As part of its "meeting-in-a-meeting" highlighting the scientific contributions and the new instrumentation available at WIYN, the Observatory partners are providing a forum for discussion of potential partnership arrangements for national 4-meter class telescopes. In this session, WIYN and other operators of 4-meter class telescopes will join in a panel discussion that features their plans for the future, possible strategies for broadening the user base from the community, and potential synergies and partnerships with existing and planned large survey projects and facilities. This session is intended to facilitate a conversation within the national community that explores potential future partnership arrangements to provide stable operational models for moderate aperture facilities that currently serve a large user base in the US.

Jannuzi, Buell

2013-06-01

389

AQUEOUS HOMOGENEOUS REACTORTECHNICAL PANEL REPORT  

SciTech Connect

Considerable interest has been expressed for developing a stable U.S. production capacity for medical isotopes and particularly for molybdenum- 99 (99Mo). This is motivated by recent re-ductions in production and supply worldwide. Consistent with U.S. nonproliferation objectives, any new production capability should not use highly enriched uranium fuel or targets. Conse-quently, Aqueous Homogeneous Reactors (AHRs) are under consideration for potential 99Mo production using low-enriched uranium. Although the Nuclear Regulatory Commission (NRC) has guidance to facilitate the licensing process for non-power reactors, that guidance is focused on reactors with fixed, solid fuel and hence, not applicable to an AHR. A panel was convened to study the technical issues associated with normal operation and potential transients and accidents of an AHR that might be designed for isotope production. The panel has produced the requisite AHR licensing guidance for three chapters that exist now for non-power reactor licensing: Reac-tor Description, Reactor Coolant Systems, and Accident Analysis. The guidance is in two parts for each chapter: 1) standard format and content a licensee would use and 2) the standard review plan the NRC staff would use. This guidance takes into account the unique features of an AHR such as the fuel being in solution; the fission product barriers being the vessel and attached systems; the production and release of radiolytic and fission product gases and their impact on operations and their control by a gas management system; and the movement of fuel into and out of the reactor vessel.

Diamond, D.J.; Bajorek, S.; Bakel, A.; Flanagan, G.; Mubayi, V.; Skarda, R.; Staudenmeier, J.; Taiwo, T.; Tonoike, K.; Tripp, C.; Wei, T.; Yarsky, P.

2010-12-03

390

Analytical structural efficiency studies of borsic/aluminum compression panels  

NASA Technical Reports Server (NTRS)

Analytically determined mass-strength curves, strain-strength curves, and dimensions are presented for structurally efficient hat-stiffened panels, corrugation-stiffened panels, hat-stiffened honeycomb-core sandwich panels, open-section corrugation panels, and honeycomb-core sandwich panels. The panels were assumed to be fabricated from either titanium, borsic/aluminum, or a combination of these materials. Borsic/aluminum panels and titanium panels reinforced with borsic/aluminum were lighter and stiffer than comparably designed titanium panels. Reinforced titanium panels had the same extensional stiffness as comparably designed Borsic/aluminum panels. For a given load, the structural efficiency of the hat-stiffened honeycomb-core sandwich panel was higher than the structural efficiency of the other stiffened panels.

Mcwithey, R. R.

1976-01-01

391

Wind tunnel testing of panel flutter control using piezoelectric actuation and iterative gain tuning  

NASA Astrophysics Data System (ADS)

This is the second part of a companion paper entitled 'Unified Approach of Active Panel Vibration and Flutter Control using Piezoelectric Actuation and Iterative Root Locus Method.' This paper reports the wind-tunnel test results of panel flutter suppression which is based on the methodology described in the companion paper. Composite panels with one-sided surface- mounted piezoelectric actuators and strain sensors are manufactured. Because the piezoelectric actuators are mounted on one side of the panels only, in plane forces and bending moments are induced simultaneously when the actuators are excited with input voltages. Strain and strain-rate signals picked up by strain gages and electronic differentiators are the system outputs for feedback. Three different configurations are tested and their results are compared, which are: one set of piezo-actuators at leading edge, one set of piezo-actuators at trailing edge, and two independent sets of piezo-actuators at leading and trailing edges respectively. The nonlinear finite element dynamic models for various configurations are introduced. While the experimental setup allows a systematic way of tuning the gains during the test, the theoretical control designs are introduced which comprises the iterative root locus method and the output feedback optimum algorithm. Reasonable details of test procedures are described and major findings of this research are in order. Firstly, strain level at leading edge is about 25% of that at trailing edge. Secondly, actuators at leading edge are more effective than those at trailing edge. Finally, flutter dynamic pressure can be raised by 20 to approximately 30% using active control.

Ho, Ming-Tsang; Chen, Roger R.; Chu, Li-Chun

1997-06-01

392

Re-active Passive (RAP) Devices for Control of Noise Transmission through a Panel  

NASA Technical Reports Server (NTRS)

Re-Active Passive (RAP) devices have been developed to control low frequency (<1000 Hz) noise transmission through a panel. These devices use a combination of active, re-active, and passive technologies packaged into a single unit to control a broad frequency range utilizing the strength of each technology over its best suited frequency range. The RAP device uses passive constrained layer damping to cover the relatively high frequency range (>200 Hz), reactive distributed vibration absorber) to cover the medium frequency range (75 to 250 Hz), and active control for controlling low frequencies (<200 Hz). The device was applied to control noise transmission through a panel mounted in a transmission loss test facility. Experimental results are presented for the bare panel, and combinations of passive treatment, reactive treatment, and active control. Results indicate that three RAP devices were able to increase the overall broadband (15-1000 Hz) transmission loss by 9.4 dB. These three devices added a total of 285 grams to the panel mass of 6.0 kg, or approximately 5%, not including control electronics.

Carneal, James P.; Giovanardi, Marco; Fuller, Chris R.; Palumbo, Daniel L.

2008-01-01

393

212. MOUNT SINAI CHURCH OF GOD AT 530 SOUTH TWENTIETH ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

212. MOUNT SINAI CHURCH OF GOD AT 530 SOUTH TWENTIETH STREET, SOUTH SIDE - Russell Neighborhood, Bounded by Congress & Esquire Alley, Fifteenth & Twenty-first Streets, Louisville, Jefferson County, KY

394

29 CFR 1926.553 - Base-mounted drum hoists.  

Code of Federal Regulations, 2013 CFR

...OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) SAFETY AND HEALTH REGULATIONS FOR CONSTRUCTION Helicopters, Hoists, Elevators, and Conveyors § 1926.553 Base-mounted drum hoists. (a) General requirements....

2013-07-01

395

Development and characterization for the automated surface mount assembly.  

National Technical Information Service (NTIS)

Development of the ability to automatically assemble surface mount devices on circuits is described, including the characterization of the assembly process and improvements made to the system to increase the accuracy and repeatability of this process. The...

S. S. Yerganian J. V. Grice

1996-01-01

396

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. DETAIL VIEW OF CUPOLA ATOP OPERATOR'S CABIN WHICH MOUNTS SIGNAL HORNS, WEATHER VANE - Sacramento River Bridge, Spanning Sacramento River at California State Highway 275, Sacramento, Sacramento County, CA

397

Mount Rainier National Park Visitor Study, Summer 2012.  

National Technical Information Service (NTIS)

This visitor study report profiles a systematic random sample of Mount Rainier National Park (NP) visitors during August 410, 2012. A total of 1,113 questionnaires were distributed to visitor groups. Of those, 702 questionnaires were returned, resulting i...

M. F. Manni S. J. Hollenhorst Y. Le

2013-01-01

398

Precision mounting for instrument optical elements provided by polyimide bonding  

NASA Technical Reports Server (NTRS)

Epoxy resin-coated polyimide plastic is used for bonding materials with different thermal coefficients in applications requiring precision mounting, especially where vibrations, temperature extremes, and low pressures are encountered. Low vapor pressure of the bonding material precludes outgassing problems.

Mueller, T. F.

1969-01-01

399

Surface-mounted flat conductor cable for home wiring  

NASA Technical Reports Server (NTRS)

The concepts are discussed which are being considered and developed for surface-mounted wiring using flat conductor cable. Safety aspects, problems being encountered, and advantages are also discussed.

Hankins, J. D.; Carden, J. R.

1974-01-01

400

11. Submersible torpedo tube mounted on platform of elevator at ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. Submersible torpedo tube mounted on platform of elevator at northeast (starboard) elevator tower. - Naval Torpedo Station, Firing Pier, North end of Gould Island in Narragansett Bay, Newport, Newport County, RI

401

Standard Avionics Packaging, Mounting, and Cooling Baseline Study.  

National Technical Information Service (NTIS)

This is the final report on a study concerning the development of an avionics packaging, mounting, and environmental (PME) standard and an associated cost-benefit analysis. The report compares military and commercial airlines avionics generic standards to...

S. Baily A. Jackson J. Russell C. N. D. Smith N. Sullivan

1980-01-01

402

17. Side view of steam dome mounted on top of ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

17. Side view of steam dome mounted on top of boiler; dome is marked 'Mirrlees & Tate, 1865, Glasgow.' - Hacienda Azucarera La Concepcion, Sugar Mill Ruins, .3 Mi. W. of Junction of Rts. 418 & 111, Victoria, Agaudilla Municipio, PR

403

6. ROOF DETAIL OF MIRROR MOUNTS FOR VIEWING LAUNCH FROM ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

6. ROOF DETAIL OF MIRROR MOUNTS FOR VIEWING LAUNCH FROM INSIDE BLOCKHOUSE, PAD A IN BACKGROUND; VIEW TO EAST. - Cape Canaveral Air Station, Launch Complex 17, Facility 28401, East end of Lighthouse Road, Cape Canaveral, Brevard County, FL

404

FEATURE B. MACHINE GUN POSITION WITH LEWIS MOUNT, VIEW FACING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

FEATURE B. MACHINE GUN POSITION WITH LEWIS MOUNT, VIEW FACING NORTHWEST. - Naval Air Station Barbers Point, Battery-Machine Gun Positions, South of Point Cruz Road & west of Coral Sea Road, Ewa, Honolulu County, HI

405

FEATURE C. MACHINE GUN POSITION WITH REMNANT OF MOUNT, VIEW ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

FEATURE C. MACHINE GUN POSITION WITH REMNANT OF MOUNT, VIEW FACING SOUTH-SOUTHEAST. - Naval Air Station Barbers Point, Battery-Machine Gun Positions, South of Point Cruz Road & west of Coral Sea Road, Ewa, Honolulu County, HI

406

6. INTERIOR DETAIL OF GUN MOUNT ON TERRACE, LOOKING EAST ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

6. INTERIOR DETAIL OF GUN MOUNT ON TERRACE, LOOKING EAST (1992). - Wright-Patterson Air Force Base, Area B, Building 22, Armament Laboratory & Gun Range, On flightline between Tenth & Eleventh Streets, Dayton, Montgomery County, OH

407

FEATURE B. MACHINE GUN POSITION WITH LEWIS MOUNT, VIEW FACING ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

FEATURE B. MACHINE GUN POSITION WITH LEWIS MOUNT, VIEW FACING NORTHWEST (with scale stick). - Naval Air Station Barbers Point, Battery-Machine Gun Positions, South of Point Cruz Road & west of Coral Sea Road, Ewa, Honolulu County, HI

408

The Alaska resource data files: Mount Katmai (MK) quadrangle  

USGS Publications Warehouse

This report gives descriptions of the mineral occurrences in the Mount Katmai 1:250,000-scale quadrangle, Alaska. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska.

compiled by Wilson, Frederic H.; Church, Stanley E.; Bickerstaff, Damon P.

2006-01-01

409

Issue of Visual Correction Compatibility with Helmet-Mounted Displays.  

National Technical Information Service (NTIS)

This paper examines the compatibility issues of helmet-mounted display (HMD) designs, the requirement for providing compatible vision correction, and the methods available in order to achieve this requirement. First, the problem of limited HMD eye clearan...

C. E. Rash M. E. Kalich C. van de Pol B. S. Reynolds

2002-01-01

410

Temperature Measurement on Operating Surface Mounted Lighting Fixtures.  

National Technical Information Service (NTIS)

Potentially hazardous temperatures may result from adding thermal insulation in the attic above surface mounted incandescent lighting fixtures and/or operating these fixtures with lamps of higher wattage than specified. This study was concerned with the r...

P. M. Fulcomer

1979-01-01

411

Low radioactivity material for use in mounting radiation detectors  

NASA Technical Reports Server (NTRS)

Two materials, sapphire and synthetic quartz, have been found for use in Ge detector mounting assemblies. These materials combine desirable mechanical, thermal, and electrical properties with the radioactive cleanliness required to detect minimal amounts of K, Th, and U.

Fong, Marshall; Metzger, Albert E.; Fox, Richard L.

1988-01-01

412

38. Close view of west pier showing land span mounted ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

38. Close view of west pier showing land span mounted on movable rocker cleat resting on pier. VIEW NORTHEAST - Broadway Bridge, Spanning Foundry Street, MBTA Yard, Fort Point Channel, & Lehigh Street, Boston, Suffolk County, MA

413

Development of stitching reinforcement for transport wing panels  

NASA Technical Reports Server (NTRS)

The NASA Advanced Composites Technology (ACT) program has the objective of providing the technology required to obtain the full benefit of weight savings and performance improvements offered by composite primary aircraft structures. Achieving the objective is dependent upon developing composite materials and structures which are damage tolerant and economical to manufacture. Researchers are investigating stitching reinforcement combined with resin transfer molding to produce materials meeting the ACT program objective. Research is aimed at materials, processes, and structural concepts for application in both transport wings and fuselages, but the emphasis to date has been on wing panels. Empirical guidelines are being established for stitching reinforcement in structures designed for heavy loads. Results are presented from evaluation tests investigating stitching types, threads, and density (penetrations per square inch). Tension strength, compression strength, and compression after impact data are reported.

Palmer, Raymond J.; Dow, Marvin B.; Smith, Donald L.

1991-01-01

414

Panel fabrication utilizing GaAs solar cells  

NASA Technical Reports Server (NTRS)

The development of the GaAs solar cells for space applications is described. The activities in the fabrication of GaAs solar panels are outlined. Panels were fabricated while introducing improved quality control, soldering laydown and testing procedures. These panels include LIPS II, San Marco Satellite, and a low concentration panel for Rockwells' evaluation. The panels and their present status are discussed.

Mardesich, N.

1984-01-01

415

Vibration isolation of automotive vehicle engine using periodic mounting systems  

NASA Astrophysics Data System (ADS)

Customer awareness and sensitivity to noise and vibration levels have been raised through increasing television advertisement, in which the vehicle noise and vibration performance is used as the main market differentiation. This awareness has caused the transportation industry to regard noise and vibration as important criteria for improving market shares. One industry that tends to be in the forefront of the technology to reduce the levels of noise and vibration is the automobile industry. Hence, it is of practical interest to reduce the vibrations induced structural responses. The automotive vehicle engine is the main source of mechanical vibrations of automobiles. The engine is vulnerable to the dynamic action caused by engine disturbance force in various speed ranges. The vibrations of the automotive vehicle engines may cause structural failure, malfunction of other parts, or discomfort to passengers because of high level noise and vibrations. The mounts of the engines act as the transmission paths of the vibrations transmitted from the excitation sources to the body of the vehicle and passengers. Therefore, proper design and control of these mounts are essential to the attenuation of the vibration of platform structures. To improve vibration resistant capacities of engine mounting systems, vibration control techniques may be used. For instance, some passive and semi-active dissipation devices may be installed at mounts to enhance vibration energy absorbing capacity. In the proposed study, a radically different concept is presented whereby periodic mounts are considered because these mounts exhibit unique dynamic characteristics that make them act as mechanical filters for wave propagation. As a result, waves can propagate along the periodic mounts only within specific frequency bands called the "Pass Bands" and wave propagation is completely blocked within other frequency bands called the "Stop Bands". The experimental arrangements, including the design of mounting systems with plain and periodic mounts will be studied first. The dynamic characteristics of such systems will be obtained experimentally in both cases. The tests will be then carried out to study the performance characteristics of periodic mounts with geometrical and/or material periodicity. The effectiveness of the periodicity on the vibration levels of mounting systems will be demonstrated theoretically and experimentally. Finally, the experimental results will be compared with the theoretical predictions.

Asiri, S.

2005-05-01

416

A panel data test for poverty traps  

Microsoft Academic Search

This article develops a threshold panel data nonlinearity test for poverty traps. The new testing strategy extends the work on nonlinearity tests for panel data by considering threshold nonlinearities in the fixed-effects components. Monte Carlo simulations are conducted to evaluate the finite-sample performance of these tests. The tests are applied to the relationship between Gross Domestic Product (GDP) per capita

Antonio F. Galvao Jr; Gabriel Montes-Rojas; Jose Olmo

2013-01-01

417

Integrating Panels into the Production Homebuilding Process.  

National Technical Information Service (NTIS)

How do builders decide whether to use panelized house systems. What factors come into play when a builder is contemplating making a move to panelized construction. And for what reasons would builders who are inclined to try a new building technology choos...

2005-01-01

418

MoMLA: From Panel to Gallery  

ERIC Educational Resources Information Center

The work presented here in this "Panel to Gallery" was originally produced and assembled for the 2012 Modern Language Association Conference in Seattle, Washington. Similar to "From Gallery to Webtext", the event Victor curated for the 2006 College Composition and Communication Conference, this "Panel to Gallery" event at MLA set aside the…

Vitanza, Victor, Ed.; Kuhn, Virginia, Ed.

2013-01-01

419

Sound insulation improvement using honeycomb sandwich panels  

Microsoft Academic Search

Research results on acoustic treatment technology of honeycomb material to improve noise transmission loss characteristics of light-weight panels are presented in this paper. A prediction model has been presented to describe the transmission loss of the honeycomb panels based on the knowledge of their structural modal parameters. A series of test specimens with aluminum sheets, and fiber reinforced concrete sheets

Huang Wen-chao; Ng Chung-fai

1998-01-01

420

Forming Process Simulation of Truss Core Panel  

NASA Astrophysics Data System (ADS)

Honeycomb panel is widely used as flooring or wall material in various structure including buildings, aircraft, train and so on due to high stiffness and lightness at present. Honeycomb panel, however, has a disadvantage that adhesive used to glue honeycomb core and top plate may burn by fire. On the other hand truss core panel has equivalent stiffness as honeycomb panel and is expected to be an alternative to honeycomb panel as it is safer for fire. However, in general, difficulty exists to form truss core and forming techniques should be developed for practice use of truss core panel. In this paper, firstly theoretical forming limitation is discussed for tetrahedral truss core . Secondly single stage forming simulation of truss core panel using explicit FEM technique was performed for preliminary investigation to estimate formability and thickness distribution. Finally multi-stage forming simulation was presented and possibility to apply press forming for truss core panel production through the simulation. In addition some results of the simulation was compared with the experiment and good agreement of both results was shown.

Tokura, Sunao; Hagiwara, Ichiro

421

Drag force acting on biofouled net panels  

Microsoft Academic Search

Measurements were made to assess the increase in drag on aquaculture cage netting due to biofouling. Drag force was obtained by towing net panels, perpendicular to the incident flow, in experiments conducted in a tow tank and in the field. The net panels were fabricated from netting stretched within a 1m2 pipe frame. They were towed at various speeds, and

M. Robinson Swift; David W. Fredriksson; Alexander Unrein; Brett Fullerton; Oystein Patursson; Kenneth Baldwin

2006-01-01

422

Uncertainties in Predicting Solar Panel Power Output.  

National Technical Information Service (NTIS)

The problem of calculating solar panel power output at launch and during a space mission is considered. The major sources of uncertainty and error in predicting the post launch electrical performance of the panel are considered. A general discussion of er...

B. Anspaugh

1974-01-01

423

Getters for flat-panel displays  

Microsoft Academic Search

Getters play a crucial role in solution of the main technical issues on the way to commercial exploitation of new flat-panel technologies: packaging, reliability and lifetime. The production steps of flat-panel displays (FPDs) often include a long baking and exhaust process to minimize the impurity content prior to the final sealing, which dramatically increases the manufacturing costs up to a

S. Tominetti; M. Amiotti

2002-01-01

424

National Mathematics Advisory Panel Preliminary Report  

ERIC Educational Resources Information Center

The National Mathematics Advisory Panel was established within the Department of Education as part of the President's "American Competitiveness Initiative" through Executive Order 13398, April 18, 2006. This document fulfills the obligation of that order to issue a Preliminary Report no later than January 31, 2007. The Panel chose to divide into…

US Department of Education, 2007

2007-01-01

425

Improving Strength of Postbuckled Panels Through Stitching  

NASA Technical Reports Server (NTRS)

The behavior of blade-stiffened graphite-epoxy panels with impact damage is examined to determine the effect of adding through-the-thickness stitches in the stiffener flange-to-skin interface. The influence of stitches is evaluated by examining buckling and failure for panels with failure loads up to 3.5 times greater than buckling loads. Analytical and experimental results from four configurations of panel specimens are presented. For each configuration, two panels were manufactured with skin and flanges held together with through-the-thickness stitches introduced prior to resin infusion and curing and one panel was manufactured with no stitches holding the flange to the skin. No mechanical fasteners were used for the assembly of any of these panels. Panels with and without low-speed impact damage were loaded to failure in compression. Buckling and failure modes are discussed. Stitching had little effect on buckling loads but increased the failure loads of impact-damaged panels by up to 30%.

Jegley, Dawn C.

2007-01-01

426

Sliding, Insulating Window Panel Reduces Heat Loss.  

ERIC Educational Resources Information Center

A new sliding insulated panel reduces window heat loss up to 86 percent, and infiltration 60-90 percent, paying for itself in 3-9 years. This article discusses the panel's use and testing in the upper Midwest, reporting both technical characteristics and users' reactions. (MCG)

School Business Affairs, 1984

1984-01-01

427

Clamping Device for Pressurized Module Radiator Panel.  

National Technical Information Service (NTIS)

A clamping system for the pressurized module radiator panels of the Columbus Space Station is described. The main functions of the clamping system are to support flight loads on the radiator, and provide the radiator panel with a quasi-isostatic, high sti...

J. J. Gonzalezvallejo J. Arino L. Gutierrez

1990-01-01

428

Noise transmission by viscoelastic sandwich panels  

NASA Technical Reports Server (NTRS)

An analytical study on low frequency noise transmission into rectangular enclosures by viscoelastic sandwich panels is presented. Soft compressible cores with dilatational modes and hard incompressible cores with dilatational modes neglected are considered as limiting cases of core stiffness. It is reported that these panels can effect significant noise reduction.

Vaicaitis, R.

1977-01-01

429

Circuits in the Sun: Solar Panel Physics  

ERIC Educational Resources Information Center

Typical commercial solar panels consist of approximately 60 individual photovoltaic cells connected in series. Since the usual Kirchhoff rules apply, the current is uniform throughout the circuit, while the electric potential of the individual devices is cumulative. Hence, a solar panel is a good analog of a simple resistive series circuit, except…

Gfroerer, Tim

2013-01-01

430

Mobile mounted laser Doppler vibrometer array for acoustic landmine detection  

Microsoft Academic Search

The use of a laser Doppler vibrometer (LDV) to sense the acoustic-to-seismic coupling ratio for buried landmine detection has previously been demonstrated. During these experiments, the LDV is mounted on a fixed platform and the beam moves continuously across the ground. Experiments show that fixed mounted LDV can achieve scanning speeds up to 3.6 km\\/h for successful detection of buried

Richard D. Burgett; Marshall R. Bradley; Michael Duncan; Jason Melton; Amit K. Lal; Vyacheslav Aranchuk; Cecil F. Hess; James M. Sabatier; Ning Xiang

2003-01-01

431

Using a Head-Mounted Camera to Infer Attention Direction  

ERIC Educational Resources Information Center

A head-mounted camera was used to measure head direction. The camera was mounted to the forehead of 20 6- and 20 12-month-old infants while they watched an object held at 11 horizontal (-80° to + 80°) and 9 vertical (-48° to + 50°) positions. The results showed that the head always moved less than required to be on target. Below 30° in the…

Schmitow, Clara; Stenberg, Gunilla; Billard, Aude; von Hofsten, Claes

2013-01-01

432

An infrasound array study of Mount St. Helens  

Microsoft Academic Search

The ongoing activity of Mount St. Helens provides an opportunity to study the infrasonic wavefield produced by an active, silica-rich volcano. In late October 2004, as a pilot experiment for the Acoustic Surveillance for Hazardous Eruptions (ASHE) project, we deployed two infrasound arrays, each co-located with a broadband seismometer and weather station, to continuously record seismo-acoustic signals from Mount St.

Robin S. Matoza; Michael A. H. Hedlin; Milton A. Garcés

2007-01-01

433

Mount Rainier: learning to live with volcanic risk  

USGS Publications Warehouse

Mount Rainier in Washington state is an active volcano reaching more than 2.7 miles (14,410 feet) above sea level. Its majestic edifice looms over expanding suburbs in the valleys that lead to nearby Puget Sound. USGS research over the last several decades indicates that Mount Rainier has been the source of many volcanic mudflows (lahars) that buried areas now densely populated. Now the USGS is working cooperatively with local communities to help people live more safely with the volcano.

Driedger, C. L.; Scott, K. M.

2002-01-01

434

Fire and Mud: Eruptions and Lahars of Mount Pinatubo, Philippines  

NSDL National Science Digital Library

This book is a collection of papers about the 1991 eruptions of Mount Pinatubo, its subsequent widespread lahars, and volcanic hazards mitigation. The book includes papers on eruption hazards assessment and reaction to warnings; the ancient eruptive history, and pre-1991 modern geothermal exploration of Mount Pinatubo; related geophysical papers; sulfur dioxide emissions; studies of the rocks including pumice types; and the impact of the eruption, including building damage and socioeconomic effects, as well as the atmospheric impact.

435

Impact absorbing blade mounts for variable pitch blades  

NASA Technical Reports Server (NTRS)

A variable pitch blade and blade mount are reported that are suitable for propellers, fans and the like and which have improved impact resistance. Composite fan blades and blade mounting arrangements permit the blades to pivot relative to a turbine hub about an axis generally parallel to the centerline of the engine upon impact of a large foreign object, such as a bird. Centrifugal force recovery becomes the principal energy absorbing mechanism and a blade having improved impact strength is obtained.

Ravenhall, R.; Salemme, C. T.; Adamson, A. P. (inventors)

1977-01-01

436

Non-Linear Modelling of Hydraulic Mounts: Theory and Experiment  

NASA Astrophysics Data System (ADS)

This paper focuses on the development of a complete non-linear model of a hydraulic engine mount and the evaluation of the model using a unique experimental apparatus. The model is capable of capturing both the low- and high-frequency behavior of hydraulic mounts. The results presented here provide a significant improvement over existing models by considering all non-linear aspects of a hydraulic engine mount. Enhancements to already published non-linear models include a continuous function that follows a simplistic yet effective approach to capture the switching effect and leakage through the decoupler, and upper chamber bulge damping. It is shown that the model developed here provides the appropriate system response over the full range of loading conditions (frequency and amplitude) encountered in practice. In order to obtain the parameter values for the non-linear model, a unique test apparatus is introduced. Using the experimental set-up, it is possible to verify the model of individual components of the mount, and later on test the behavior of the whole assembly. These data also establish the relative importance of several damping, inertia and stiffness terms. In addition, the measured responses of the mounts to loading at various frequencies and amplitudes are compared to the predictions of the mathematical model. The comparisons generally show a very good agreement (better than 10%), which corroborate the non-linear model of the mount. It is felt that this work will help engineers in reducing mount design time, by providing insight into the effects of various parameters within the mount.

GEISBERGER, A.; KHAJEPOUR, A.; GOLNARAGHI, F.

2002-01-01

437

Space Radar Image of Mount Pinatubo Volcano, Philippines  

NASA Technical Reports Server (NTRS)

These are color composite radar images showing the area around Mount Pinatubo in the Philippines. The images were acquired by the Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) aboard the space shuttle Endeavour on April 14, 1994 (left image) and October 5,1994 (right image). The images are centered at about 15 degrees north latitude and 120.5 degrees east longitude. Both images were obtained with the same viewing geometry. The color composites were made by displaying the L-band (horizontally transmitted and received) in red; the L-band (horizontally transmitted and vertically received) in green; and the C-band (horizontally transmitted and vertically received) in blue. The area shown is approximately 40 kilometers by 65 kilometers (25 miles by 40 miles). The main volcanic crater on Mount Pinatubo produced by the June 1991 eruptions and the steep slopes on the upper flanks of the volcano are easily seen in these images. Red on the high slopes shows the distribution of the ash deposited during the 1991 eruption, which appears red because of the low cross-polarized radar returns at C and L bands. The dark drainages radiating away from the summit are the smooth mudflows, which even three years after the eruptions continue to flood the river valleys after heavy rain. Comparing the two images shows that significant changes have occurred in the intervening five months along the Pasig-Potrero rivers (the dark area in the lower right of the images). Mudflows, called 'lahars,' that occurred during the 1994 monsoon season filled the river valleys, allowing the lahars to spread over the surrounding countryside. Three weeks before the second image was obtained, devastating lahars more than doubled the area affected in the Pasig-Potrero rivers, which is clearly visible as the increase in dark area on the lower right of the images. Migration of deposition to the east (right) has affected many communities. Newly affected areas included the community of Bacolor, Pampanga, where thousands of homes were buried in meters of hot mud and rock as 80,000 people fled the lahar-stricken area. Scientists are closely monitoring the westward migration ( toward the left in this image) of the lahars as the Pasig-Potrero rivers seek to join with the Porac River, an area that has not seen laharic activity since the eruption. This could be devastating because the Pasig-Potrero rivers might be permanently redirected to lower elevations along the Porac River where communities are located. Ground saturation with water during the rainy season reveals inactive channels that were dry in the April image. A small lake has turned into a pond in the lower reaches of the Potrero River because the channels are full of lahar deposits and the surface runoff has no where to flow. Changes in the degree of erosion in ash and pumice deposits from the 1991 eruption can also be seen in the channels that deliver the mudflow material to the Pasig-Potrero rivers. The 1991 Mount Pinatubo eruption is well known for its near-global effects on the atmosphere and short-term climate due to the large amount of sulfur dioxide that was injected into the upper atmosphere. Locally, however, the effects will most likely continue to impact surrounding areas for as long as the next 10 to 15 years. Mudflows, quite certainly, will continue to pose severe hazards to adjacent areas. Radar observations like those obtained by SIR-C/X-SAR will play a key role in monitoring these changes because of the radar's ability to see in daylight or darkness and even in the worst weather conditions. Radar imaging will be particularly useful, for example, during the monsoon season, when the lahars form. Frequent imaging of these lahar fields will allow scientists to better predict when they are likely to begin flowing again and which communities might be at risk. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves, allowing detailed observations at any time, regardless

1994-01-01

438

Heavy-ion radiotherapy  

NASA Astrophysics Data System (ADS)

Heavy-ion radiotherapy using high-energy carbon beams has been performed at the National Institute of Radiological Sciences, Japan. The physical frame works for heavy-ion radiotherapy are established using physical understandings of radiation physics. In order to increase the accuracy of heavy-ion radiotherapy, many physical problems should be solved. Unsolved problems, such as the depth dose distributions, range of heavy-ion in patients and heavy-ion dosimetry in the radiation therapy, are discussed. .

Kanai, Tatsuaki

2000-11-01

439

Four-Point Mounting Configuration for Resonators Subjected to Severe Environments.  

National Technical Information Service (NTIS)

AT-cut quartz plate resonators are usually edge mounted. For precision applications, and especially where ruggedness is required, a four-point mount is necessary. This report investigates those mounts consisting of two pairs of diametric attachments. For ...

A. Ballato

1977-01-01

440

14 CFR 25.865 - Fire protection of flight controls, engine mounts, and other flight structure.  

Code of Federal Regulations, 2011 CFR

... false Fire protection of flight controls, engine mounts, and other flight...25.865 Fire protection of flight controls, engine mounts, and other flight structure. Essential flight controls, engine mounts, and...

2014-01-01

441

14 CFR 23.865 - Fire protection of flight controls, engine mounts, and other flight structure.  

Code of Federal Regulations, 2010 CFR

... false Fire protection of flight controls, engine mounts, and other flight...23.865 Fire protection of flight controls, engine mounts, and other flight structure. Flight controls, engine mounts,...

2014-01-01

442

76 FR 32142 - Bottom Mount Combination Refrigerator-Freezers From the Republic of Korea: Postponement of...  

Federal Register 2010, 2011, 2012, 2013

...C-580-866] Bottom Mount Combination Refrigerator-Freezers From the...duty investigation of bottom mount combination refrigerator-freezers from the Republic of Korea. See Bottom Mount Combination Refrigerator-Freezers From...

2011-06-03

443

75 FR 16335 - Establishment of Class E Airspace; Mount Pleasant, SC  

Federal Register 2010, 2011, 2012, 2013

...Establishment of Class E Airspace; Mount Pleasant, SC AGENCY: Federal Aviation...establishes Class E airspace at Mount Pleasant, SC, to accommodate Standard...establishes Class E airspace at Mount Pleasant, SC, to provide controlled...

2010-04-01

444

National Ingition Facility subsystem design requirements optical mounts SSDR 1.4.4  

SciTech Connect

This SSDR establishes the performance, design, development and test requirements for NIF Beam Transport Optomechanical Subsystems. optomechanical Subsystems includes the mounts for the beam transport mirrors, LMl - LM8, the polarizer mount, and the spatial filter lens mounts.

Richardson, M.

1996-10-06

445

Full scale GLARE fuselage panel tests  

NASA Technical Reports Server (NTRS)

A GLARE fuselage panel, representative of the crown section of the Fokker 100 fuselage in front of the wing, was tested. The panels were loaded by air pressure resulting in tangential stress in the panel by axial loading, representative of both the cabin pressure and the fuselage bending due to taxiing and gust loading. A fatigue test, simulating 180000 flights, followed by static tests were performed. The panel was loaded to failure at 1.32 ultimate load. The test set-up, the uniform strain distribution of the panel, and the fatigue loads applied at high test frequency are described. The use of GLARE leads to a substantial weight reduction without affecting the fatigue static strength.

Vercammen, Roland W. A.; Ottens, Harold H.

1996-01-01

446

Method for producing micro heat panels  

NASA Technical Reports Server (NTRS)

Flat or curved micro heat pipe panels are fabricated by arranging essentially parallel filaments in the shape of the desired panel. The configuration of the filaments corresponds to the desired configuration of the tubes that will constitute the heat pipes. A thermally conductive material is then deposited on and around the filaments to fill in the desired shape of the panel. The filaments are then removed, leaving tubular passageways of the desired configuration and surface texture in the material. The tubes are then filled with a working fluid and sealed. Composite micro heat pipe laminates are formed by layering individual micro heat pipe panels and bonding them to each other to form a single structure. The layering sequence of the micro heat pipe panels can be tailored to transport heat preferentially in specific directions as desired for a particular application.

Camarda, Charles J. (Inventor); Peterson, George P. (Inventor); Rummler, Donald R. (Inventor)

1997-01-01

447

Thin film photovoltaic panel and method  

DOEpatents

A thin film photovoltaic panel includes a backcap for protecting the active components of the photovoltaic cells from adverse environmental elements. A spacing between the backcap and a top electrode layer is preferably filled with a desiccant to further reduce water vapor contamination of the environment surrounding the photovoltaic cells. The contamination of the spacing between the backcap and the cells may be further reduced by passing a selected gas through the spacing subsequent to sealing the backcap to the base of the photovoltaic panels, and once purged this spacing may be filled with an inert gas. The techniques of the present invention are preferably applied to thin film photovoltaic panels each formed from a plurality of photovoltaic cells arranged on a vitreous substrate. The stability of photovoltaic conversion efficiency remains relatively high during the life of the photovoltaic panel, and the cost of manufacturing highly efficient panels with such improved stability is significantly reduced.

Ackerman, Bruce (El Paso, TX); Albright, Scot P. (El Paso, TX); Jordan, John F. (El Paso, TX)

1991-06-11

448

Reliability of stiffened structural panels: Two examples  

NASA Technical Reports Server (NTRS)

The reliability of two graphite-epoxy stiffened panels that contain uncertainties is examined. For one panel, the effect of an overall bow-type initial imperfection is studied. The size of the bow is assumed to be a random variable. The failure mode is buckling. The benefits of quality control are explored by using truncated distributions. For the other panel, the effect of uncertainties in a strain-based failure criterion is studied. The allowable strains are assumed to be random variables. A geometrically nonlinear analysis is used to calculate a detailed strain distribution near an elliptical access hole in a wing panel that was tested to failure. Calculated strains are used to predict failure. Results are compared with the experimental failure load of the panel.

Stroud, W. Jefferson; Davis, D. Dale, Jr.; Maring, Lise D.; Krishnamurthy, Thiagaraja; Elishakoff, Isaac

1992-01-01

449

Heavy Ions In Space (HIIS) experiment  

NASA Technical Reports Server (NTRS)

The Heavy Ions In Space (HIIS) experiment has two primary objectives: (1) to measure the elemental composition of ultraheavy Galactic cosmic rays, beginning in the tin-barium region of the periodic table; and (2) to study heavy ions which arrive at LDEF below the geomagnetic cutoff, either because they are not fully stripped of electrons or because their source is within the magnetosphere. Both have practical as well as astrophysical consequences. The HIIS experiment used eight thick stacks of plastic track detectors mounted in two trays on the space facing end of LDEF. Since the last LDEF symposium, the statistics were increased of the observations and have extended the analysis to a second stack and to detector sheets near the top of a stack. New results are reported on the detector resolution and on the observations of both stopping and relativistic particles.

Adams, James H., Jr.; Beahm, Lorraine P.; Tylka, Allan J.

1992-01-01

450

Hypervelocity Impact Performance of Open Cell Foam Core Sandwich Panel Structures  

NASA Technical Reports Server (NTRS)

Open cell metallic foam core sandwich panel structures are of interest for application in spacecraft micrometeoroid and orbital debris shields due to their novel form and advantageous structural and thermal performance. Repeated shocking as a result of secondary impacts upon individual foam ligaments during the penetration process acts to raise the thermal state of impacting projectiles ; resulting in fragmentation, melting, and vaporization at lower velocities than with traditional shielding configurations (e.g. Whipple shield). In order to characterize the protective capability of these structures, an extensive experimental campaign was performed by the Johnson Space Center Hypervelocity Impact Technology Facility, the results of which are reported in this paper. Although not capable of competing against the protection levels achievable with leading heavy shields in use on modern high-risk vehicles (i.e. International Space Station modules), metallic foam core sandwich panels are shown to provide a substantial improvement over comparable structural panels and traditional low weight shielding alternatives such as honeycomb sandwich panels and metallic Whipple shields. A ballistic limit equation, generalized in terms of panel geometry, is derived and presented in a form suitable for application in risk assessment codes.

Ryan, S.; Ordonez, E.; Christiansen, E. L.; Lear, D. M.

2010-01-01

451

Improved Cryostat for Cooling a Wide Panel  

NASA Technical Reports Server (NTRS)

An improved cryostat has been developed for cooling a wide panel evenly over its surface to a temperature of -423 F (approximately equal to -253 C) by use of liquid helium. Originally, the cryostat was to be used in measuring apparent strains in wide aluminum/lithium panels as functions of temperature in order to develop data for temperature compensation of the readings of strain gauges on a tank containing liquid hydrogen. Relative to the cryostat used previously for this purpose, the improved cryostat can be prepared for a test in less time, and it loses less helium during each test. Each wide panel to be tested is instrumented with thermocouples in preparation for a test. The previous cryostat was made of two aluminum halves that, for each test, were sandwiched together and sealed around the instrumented wide panel to be tested. The panel was thus enclosed in a plenum. The cryostat and adjacent panel areas protruding from the cryostat were then coated with a thermally insulating foam. During a test, liquid helium was made to flow into the plenum through a port on the bottom. The helium vaporized and expanded, filling the plenum with cold helium gas, which eventually flowed out of the plenum through a port on the top. The nature of the flow was such that a significant portion of the helium did not come into contact with the wide panel; hence, cooling was less efficient than it might otherwise have been. After completion of each test, the foam and the cryostat were separated from the panel. The cryostat was cleaned and prepared for installation on another instrumented wide panel for the next test. It took 28 hours to install the cryostat onto the instrumented panel, apply the foam, and perform ancillary operations in preparation for a test. The volume of liquid helium consumed during each test was 750 liters. The improved cryostat (see figure) includes an upper section and a lower section, both of which include permanent housings made of a thermally insulating foam 2-in. (approximately equal to 5-cm) thick. A liquid-helium- injection manifold is attached to the inside of the top section. The bottom section includes an outlet for helium gas. The manifold contains slots that, when the cryostat is installed on the panel, are located approximately 1 in. (approximately equal to 2.5 cm) from the wide panel. The array of slots spans a substantial portion of the area of the panel. The top and bottom sections of the cryostat are sealed to the panel by use of polytetrafluoroethylene cord and aluminum tape. Liquid helium is fed into the manifold from the top. The helium leaves the manifold through the slots and thus impinges directly on the panel. Hence, all the helium entering the cryostat must come into contact with the panel before leaving the cryostat. After a test, the cryostat is removed from the panel and reinstalled onto another panel for the next test. Installation of the cryostat on an instrumented panel takes a negligible amount of time, in comparison with the 28 hours associated with the previous cryostat. The amount of liquid helium consumed during a test in the improved cryostat is 500 liters - 250 liters less than before.

Clifton, W. B.

2004-01-01

452

46 CFR 112.43-7 - Navigating bridge distribution panel.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Navigating bridge distribution panel. 112.43-7 ...Systems § 112.43-7 Navigating bridge distribution panel. (a) Except...a distribution panel on the navigating bridge: (1) Navigation lights not...

2013-10-01

453

Airborne Magnetic and Electromagnetic Data map Rock Alteration and Water Content at Mount Adams, Mount Baker and Mount Rainier, Washington: Implications for Lahar Hazards and Hydrothermal Systems  

NASA Astrophysics Data System (ADS)

High resolution helicopter-borne magnetic and electromagnetic (EM) data flown over the rugged, ice-covered, highly magnetic and mostly resistive volcanoes of Mount Rainier, Mount Adams and Mount Baker, along with rock property measurements, reveal the distribution of alteration, water and hydrothermal fluids that are essential to evaluating volcanic landslide hazards and understanding hydrothermal systems. Hydrothermally altered rocks, particularly if water saturated, can weaken stratovolcanoes, thereby increasing the potential for catastrophic sector collapses that can lead to far-traveled, destructive debris flows. Intense hydrothermal alteration significantly reduces the magnetization and resistivity of volcanic rock resulting in clear recognition of altered rock by helicopter magnetic and EM measurements. Magnetic and EM data, combined with geological mapping and rock property measurements, indicate the presence of appreciable thicknesses of hydrothermally altered rock west of the modern summit of Mount Rainier in the Sunset Amphitheater region, in the central core of Mount Adams north of the summit, and in much of the central cone of Mount Baker. We identify the Sunset Amphitheater region and steep cliffs at the western edge of the central altered zone at Mount Adams as likely sources for future debris flows. In addition, the EM data identified water-saturated rocks in the upper 100-200 m of the three volcanoes. The water-saturated zone could extend deeper, but is beyond the detection limits of the EM data. Water in hydrothermal fluids reacts with the volcanic rock to produce clay minerals. The formation of clay minerals and presence of free water reduces the effective stress, thereby increasing the potential for slope failure, and acts, with entrained melting ice, as a lubricant to transform debris avalanches into lahars. Therefore, knowing the distribution of water is also important for hazard assessments. Finally, modeling requires extremely low resistivities (< 20 ohm-m) that laboratory electrical resistivity measurements indicate are most easily explained by sulfuric acid solutions permeating altered rocks. The acid is the result of oxidation of magmatic H2S to sulfuric acid and highlights the continued alteration of volcanoes during periods of relative quiescence. Our results demonstrate that high resolution geophysical and geological observations can yield unprecedented views of the three-dimensional distribution of altered rock and shallow pore water and hydrothermal fluids within active stratovolcanoes.

Finn, C. A.; Deszcz-Pan, M.; Horton, R.; Breit, G.; John, D.

2007-12-01

454

Structural Analysis of Sandwich Foam Panels  

SciTech Connect

The Sandwich Panel Technologies including Structural Insulated Panels (SIPs) can be used to replace the conventional wooden-frame construction method. The main purpose of this Cooperative Research and Development Agreement (CRADA) between UT-Battelle, LLC and SGI Venture, Inc. was to design a novel high R-value type of metal sandwich panelized technology. This CRADA project report presents design concept discussion and numerical analysis results from thermal performance study of this new building envelope system. The main objective of this work was to develop a basic concept of a new generation of wall panel technologies which will have R-value over R-20 will use thermal mass to improve energy performance in cooling dominated climates and will be 100% termite resistant. The main advantages of using sandwich panels are as follows: (1) better energy saving structural panels with high and uniform overall wall R-value across the elevation that could not be achieved in traditional walls; and (2) reducing the use of raw materials or need for virgin lumber. For better utilization of these Sandwich panels, engineers need to have a thorough understanding of the actual performance of the panels and system. Detailed analysis and study on the capacities and deformation of individual panels and its assembly have to be performed to achieve that goal. The major project activity was to conduct structural analysis of the stresses, strains, load capacities, and deformations of individual sandwich components under various load cases. The analysis simulated the actual loading conditions of the regular residential building and used actual material properties of the steel facings and foam.

Kosny, Jan [ORNL; Huo, X. Sharon [Tennessee Technological University

2010-04-01

455

Combined load test apparatus for flat panels  

NASA Astrophysics Data System (ADS)

Future hypersonic aircraft such as the National Aero-Space Plane and a high speed civil transport will require the design and use of efficient, highly-loaded, flat structural panels to achieve mission requirements. These panels will be subjected to severe combinations of in-plane mechanical distributed loads (i.e., normal loads in two perpendicular directions plus a shear load), in addition to pressure and thermal loads. A testing apparatus is provided for applying uniform combined in-plane stresses to a flat panel containing an interior test area. Actuators cause two sets of load rods to apply loads to the edge of the flat panel. The first set applies loads which are perpendicular to and independent of the loads applied by the second set. The loads are applied according to a cosine load distribution to obtain a uniform stress field within the test area. The flat panel may be rotated with respect to the applied loads to obtain a wide range of combined stresses in the test area. Movement outside the plane of the flat panel may be selectively prevented by connecting the flat panel to a restraining disk by support rods. The support rods then define the test area. A thermal load may be applied to one side of the flat panel and a pressure load may be applied to the other side. The novelty of this method is found in providing a testing apparatus which allows mechanical, thermal and pressure loads to be applied simultaneously to a flat panel for testing purposes.

McWithey, Robert R.; Martin, Carl J., Jr.; Cerro, Jeffrey A.

1992-04-01

456

75 FR 57102 - Occupational Information Development Advisory Panel Meeting; Correction  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting; Correction AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2010-09-17

457

75 FR 55625 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2010-09-13

458

76 FR 40768 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2011-07-11

459

76 FR 70804 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2011-11-15

460

77 FR 13172 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2012-03-05

461

76 FR 53993 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2011-08-30

462

77 FR 30044 - Occupational Information Development Advisory Panel Meeting  

Federal Register 2010, 2011, 2012, 2013

...SOCIAL SECURITY ADMINISTRATION...Occupational Information Development Advisory Panel Meeting AGENCY: Social Security Administration...Occupational Information Development Advisory Panel, Social Security...

2012-05-21

463

Design for SOP AMOLED display panel  

NASA Astrophysics Data System (ADS)

A novel full color SOP (system on panel) AMOLED display based on the MIUC polycrystalline silicon TFT technique, and a new control circuit for the panel, which can deal with both VGA and DVI input signals have been developed. To realize gray-scale a sub-frame technique has been designed and implemented by FPGA device, in which an I2C module has been inserted. Through actual circuit, the whole design has been proven and the advantages of the SOP AMOLED display panel have been confirmed.

Ma, Hai-Ying; Xu, Bu-Heng; Wu, Chun-Ya; Meng, Zhi-Guo; Xiong, Shao-Zhen; Zhang, Li-Zhu

2005-07-01

464

Flat or curved thin optical display panel  

DOEpatents

An optical panel includes a plurality of waveguides stacked together, with each waveguide having a first end and an opposite second end. The first ends collectively define a first face, and the second ends collectively define a second face of the panel. The second face is disposed at an acute face angle relative to the waveguides to provide a panel which is relatively thin compared to the height of the second face. In an exemplary embodiment for use in a projection TV, the first face is substantially smaller in height than the second face and receives a TV image, with the second face defining a screen for viewing the image enlarged. 7 figures.

Veligdan, J.T.

1995-01-10

465

Cooled Panel With Thermostats In All Passages  

NASA Technical Reports Server (NTRS)

Simple shape-memory-alloy or bimaterial thermostatic valve incorporated in each passage of multiple-passage cooled panel, according to proposal. Thermostatic valves all set to same opening/closing temperature, so they regulate flows in all passages to equalize or nearly equalize temperature across panel in presence of transient, nonuniform surface heating. Concept beneficial in application in which overheating causes damage and both overcooling and excessive circulation of coolant occurs in absence of regulation if cooling capacity of panel made large enough to handle peak heat load. Potential applications include cooled structures for advanced hypersonic aircraft and engines.

Blosser, Max L.; Kelly, H. Neale

1994-01-01

466

Thermal performance of radiative cooling panels  

NASA Astrophysics Data System (ADS)

The performance of panels which cool by means of thermal infrared heat transfer to the sky is calculated from basic principles. The efficiency of a radiative cooling panel is defined. Computer calculations with the full heat transfer equations are performed for horizontal surfaces with infrared-transparent covers. Plots of efficiency versus a dimensionless temperature difference are shown to be insensitive to variations in air temperature, wind speed, and sky radiance, resulting in plots analogous to standard efficiency curves for solar panels. Experimental measurements show that, for most applications, white paint is a better radiator than aluminized polyvinyl fluoride film.

Berdahl, P.; Martin, M.; Sakkal, F.

1983-06-01

467

Concentrating Solar Panels: Bringing the Highest Power and Lowest Cost to the Rooftop  

SciTech Connect

Soliant Energy is a venture-capital-backed startup focused on bringing advanced concentrating solar panels to market. Our fundamental innovation is that we are the first company to develop a racking solar concentrator specifically for commercial rooftop applications, resulting in the lowest LCOE for rooftop electricity generation. Today, the commercial rooftop segment is the largest and fastest-growing market in the solar industry. Our concentrating panels can make a major contribution to the SAI's objectives: reducing the cost of solar electricity and rapidly deploying capacity. Our commercialization focus was re-shaped in 2009, shifting from an emphasis solely on panel efficiency to LCOE. Since the inception of the SAI program, LCOE has become the de facto standard for comparing commercial photovoltaic systems. While estimation and prediction models still differ, the emergence of performance-based incentive (PBI) and feed-in tariff (FIT) systems, as well as power purchase agreement (PPA) financing structures make LCOE the natural metric for photovoltaic systems. Soliant Energy has designed and demonstrated lower-cost, higher-power solar panels that consists of 6 (500X) PV module assemblies utilizing multi-junction cells and an integrated two-axis tracker. In addition, we have designed and demonstrated a prototype 1000X panel assembly with 8. Cost reductions relative to conventional flat panel PV systems were realized by (1) reducing the amount of costly semiconductor material and (2) developing strategies and processes to reduce the manufacturing costs of the entire system. Performance gains against conventional benchmarks were realized with (1) two-axis tracking and (2) higher-efficiency multi-junction PV cells capable of operating at a solar concentration ratio of 1000X (1000 kW/m2). The program objectives are: (1) Develop a tracking/concentrating solar module that has the same geometric form factor as a conventional flat, roof mounted photovoltaic (PV) panel - the Soliant module will produce more power and cost less than conventional panels of the same size; (2) Target LCOE: $0.079/kWh in 2010; (3) Target efficiency - 26% in 2010 (22% for 2008 prototype, 24% for 2009 pilot); and (4) Target performance - equivalent to 650Wp in 2010 (490W for 2008 prototype, 540W for 2009 pilot).

Michael Deck; Rick Russell

2010-01-05

468

Eruptions of Mount St. Helens : Past, present, and future  

USGS Publications Warehouse

Mount St. Helens, located in southwestern Washington about 50 miles northeast of Portland, Oregon, is one of several lofty volcanic peaks that dominate the Cascade Range of the Pacific Northwest; the range extends from Mount Garibaldi in British Columbia, Canada, to Lassen Peak in northern California. Geologists call Mount St. Helens a composite volcano (or stratovolcano), a term for steepsided, often symmetrical cones constructed of alternating layers of lava flows, ash, and other volcanic debris. Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property. In contrast, the gently sloping shield volcanoes, such as those in Hawaii, typically erupt nonexplosively, producing fluid lavas that can flow great distances from the active vents. Although Hawaiian-type eruptions may destroy property, they rarely cause death or injury. Before 1980, snow-capped, gracefully symmetrical Mount St. Helens was known as the "Fujiyama of America." Mount St. Helens, other active Cascade volcanoes, and those of Alaska form the North American segment of the circum-Pacific "Ring of Fire," a notorious zone that produces frequent, often destructive, earthquake and volcanic activity.

Tilling, Robert I.; Topinka, Lyn J.; Swanson, Donald A.

1990-01-01

469

Water levels and water-level changes in the Prairie du Chien-Jordan and Mount Simon-Hinckley aquifers, Twin Cities metropolitan area, Minnesota, 1971-80  

USGS Publications Warehouse

The Mississippi, Minnesota, and St. Croix Rivers greatly influence flow patterns in the Prairie du Chien-Jordan aquifer. Water generally flows toward these streams from surrounding water-level highs. Heavy pumping has caused only localized cones of depression. In contrast, pumping in Minneapolis and St. Paul has greatly influenced ground-water flow in the Mount Simon-Hinckley aquifer, resulting in a large cone of depression. Between 1971 and 1980 average water levels in the Prairie du Chien-Jordan aquifer changed less than 5 feet in most of the study area, while average water levels in the Mount Simon-Hinckley aquifer rose as much as 60 feet in the center of the cone of depression. Water-level data suggest that (1) little variation of annual pumpage between 1971 and 1980 from the Prairie du Chien-Jordan aquifer produced generally stable water levels in that aquifer, (2) decreased annual pumpage from 1971 to 1980 from the Mount Simon-Hinckley aquifer caused rising water levels in that aquifer, and (3) a greater seasonal component of pumpage for the Mount Simon-Hinckley aquifer than for the Prairie du Chien-Jordan p