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Last update: November 12, 2013.
1

NASA: Satellite Tracking  

NSDL National Science Digital Library

While NASA has offered a number of fine sites about their research for the general public over the years, this particular site may be one of their best. With a minimum of fuss, visitors can use several of the online tracking applications offered here to locate hundreds of satellites and other such large objects in space. A good way to start a visit to this site is by taking a look at the J-Track 2.5 section, as it offers a quick way to find out the current location of the Space Station and the Chandra X-Ray Observatory. Additionally, visitors can also locate weather satellites using this application. The Live 3D Java Tracking Display here allows visitors to monitor close to 700 satellites that are in motion around the earth. Finally, visitors can also use a handy application offered here that allows them to determine which satellites might be seen from their location in the night sky.

2005-01-01

2

78 FR 49296 - NASA International Space Station Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...13-091] NASA International Space Station...Committee Act, Public Law 92-463...of the NASA International Space Station...Office of International and Interagency Relations, (202) 358-5140...open to the public up to the...

2013-08-13

3

NASA Now Minute: Materials Science: International Space Station Testing  

NASA Video Gallery

The Materials International Space Station Experiment, or MISSE, provides NASA with a means to study the effects of long-term exposure to space on various materials, computer components and electronic devices. The results of this research assist NASA scientists and engineers design future spacecraft. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: ›  http://explorerschools.nasa.gov.

Heather Deiss

2012-03-26

4

NASA - NASA eClips™: Home Improvement - Space Station Style  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

5

77 FR 2765 - NASA International Space Station Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Committee Act, Public Law 92-463...of the NASA International Space Station...aboard the International Space Station...Office of International and Interagency Relations, (202) 358-1527...open to the public up to the...

2012-01-19

6

77 FR 41203 - NASA International Space Station Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Committee Act, Public Law 92-463...of the NASA International Space Station...aboard the International Space Station...Office of International and Interagency Relations, (202) 358-1527...open to the public up to the...

2012-07-12

7

75 FR 51852 - NASA International Space Station Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Committee Act, Public Law 92-463...of the NASA International Space Station...aboard the International Space Station...Office of International and Interagency Relations, (202) 358-1527...open to the public up to the...

2010-08-23

8

77 FR 66082 - NASA International Space Station Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Committee Act, Public Law 92-463...of the NASA International Space Station...aboard the International Space Station...Office of International and Interagency Relations, (202) 358-1527...open to the public up to the...

2012-11-01

9

NASA: Atlas of Extratropical Storm Tracks  

NSDL National Science Digital Library

At this website, the NASA Goddard Institute for Space Studies offers an online atlas of fundamental information on extratropical storm systems in the mid-latitude during the last half of the twentieth century. Users can find maps of storm frequency and intensity and monthly and seasonal means as well as graphs of individual storm paths and the most severe storms. Researchers can download the storm track data and a FORTRAN program used to extract time and geographic subsets of the database. The website adequately describes how the computations and plots were created.

10

4. EASTBOUND VIEW. NORTH TRACK WAITING STATION ON LEFT. STATION ...  

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

4. EASTBOUND VIEW. NORTH TRACK WAITING STATION ON LEFT. STATION ON RIGHT. NOTE TUNNEL IN BACKGROUND. - Baltimore & Ohio Railroad, Harpers Ferry Station, Potomac Street, Harpers Ferry, Jefferson County, WV

11

NASA Sets TV Briefing Today to Discuss Space Station Status  

NASA Website

NASA managers will discuss the status of the International Space Station, including the latest on an external cooling loop leak that developed Thursday, during a televised briefing today at 4 p.m. EDT.

12

A general-purpose laser tracking station  

Microsoft Academic Search

The paper describes the laser rangefinder used at a general-purpose laser tracking station for purposes of geodesy and satellite tracking. The basic features of the systems composing the station are considered with particular attention given to the station optics.

A. V. Stoikov; T. P. Peev; S. D. Dzynov; V. L. Tashev; M. K. Abele

1988-01-01

13

Kansas Students to Speak Live With Space Station NASA Astronauts  

NASA Website

Expedition 36 crew members and NASA astronauts Chris Cassidy and Karen Nyberg, currently orbiting aboard the International Space Station, will speak with students gathered at the Kansas Cosmosphere and Space Center at 9:40 a.m. CDT (10:40 a.m. EDT), ...

14

The NASA tracking and data acquisition networks - Their history and their future  

NASA Astrophysics Data System (ADS)

The NASA Tracking and Data Acquisition Networks were begun in the late 1950s as a part of the U.S. activities associated with the 1958-59 International Geophysical Year. The first network, the Minitrack Net, evolved into the Space Tracking and Data Acquisition Network (STADAN) for support of scientific satellites in earth orbit. The NASA Mercury and Apollo manned flight programs produced more demanding requirements for near real-time tracking, communications, and orbit determination, thus providing the impetus for new, more sophisticated networks. The Deep Space Network was also created to meet unique requirements of the planetary exploration programs. All of these programs necessitated establishing ground stations in various countries around the world, thus promoting the concept of international cooperation in space activities which NASA has fostered in many programs. This paper traces these networks from their beginnings through the various stages of development and introduction of new technologies to meet the requirements of increasingly more complex space missions. The paper also discusses the planning for new capabilities for tracking, data acquisition and communications support of future programs, including particularly the Space Station in the next decade.

Force, Charles T.

1987-10-01

15

The NASA tracking and data acquisition networks Their history and their future  

NASA Astrophysics Data System (ADS)

The NASA Tracking and Data Acquisition Networks were begun in the late 1950s as a part of the United States activities associated with the 1958-59 International Geophysical Year. The first network—the Minitrack Net—evolved into the Space Tracking and Data Acquisition Network (STADAN) for support of scientific satellites in earth orbit. The NASA Mercury and Apollo manned flight programs produced more demanding requirements for near real-time tracking, communications, and orbit determination, thus providing the impetus for new, more sophisticated networks. The Deep Space Network was also created to meet unique requirements of the planetary exploration programs. All of these programs necessitated establishing ground stations in various countries around the world, thus promoting the concept of international cooperation in space activities which NASA has fostered in many programs. This paper traces these networks from their beginnings through the various stages of development and introduction of new technologies to meet the requirements of increasingly more complex space missions. We will also review the planning for new capabilities for tracking, data acquisition and communications support of future programs, including particularly the Space Station in the next decade.

Force, Charles T.

16

DISTRIBUTION STATION IN FOREGROUND, TRACK FOOTINGS AT LEFT CENTER, WATER ...  

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

DISTRIBUTION STATION IN FOREGROUND, TRACK FOOTINGS AT LEFT CENTER, WATER TOWER (BLDG. 0516) IN BACKGROUND. Looking northeast - Edwards Air Force Base, South Base Sled Track, Electrical Distribution Station, South side of Sled Track, Lancaster, Los Angeles County, CA

17

Comparing adaptive optics approaches for NASA LCRD Ground Station #2  

NASA Astrophysics Data System (ADS)

NASA's Laser Communication Relay Demonstration (LCRD) aims to demonstrate a geosynchronous satellite laser communications (lasercom) relay between two independent ground terminals. We report on the design of two adaptive optics (AO) techniques for LCRD Ground Station #2 (GS-2). GS-2 leverages the ground terminal developed for NASA's Lunar Laser Communications Demonstration (LLCD). Equipping GS-2's 40cm diameter receive telescope with AO to mitigate atmospheric turbulence effects will enable the use of single mode, optically preamplified receivers for high data-rate near-Earth relay applications. In this work a direct wavefront sensing AO approach using a Shack-Hartmann sensor and a continuous facesheet micro-electro-mechanical system (MEMS) deformable mirror (DM) was compared with an indirect sensing, hill-climbing or multidither approach using a segmented MEMS DM. Design concepts and recent experimental progress for the two approaches are presented.

Stewart, Jason B.; Murphy, Daniel V.; Moores, John D.; Fletcher, Andrew S.; Bonneau, Keith M.

2013-03-01

18

Star visibility and tracking from the Space Station  

NASA Astrophysics Data System (ADS)

Purpose of the present study is to provide algorithms for and examples of how to simulate star visibility and tracking by a Telescope attached to the main truss of the International Space Station (ISS). The sky visibility of a Telescope is limited by accommodation constraints on the truss, by obstructions caused by Station's structural elements along with other payloads, by Sun and Moon's light and by ram atomic Oxygen. It is also limited by Station's orbit and attitude. The above limiting agents have been modeled vis-a-vis NASA nominal specifications and knowledge of the ambient environment. These models have been used to write algorithms and to produce examples of visibility and tracking at single star level. The above analysis has been used to describe in detail how to simulate star visibility and tracking of an observing program all over the sky by a plausible wide field Telescope operated only during successive 80 days coast periods in the declination's range -71° to 71°. Simulation is mandatory in advance of real observations. The analysis rests on the feasibility study, funded by the Italian Space Agency (ASI), of a Telescope designed for accommodation on ISS. The present visibility and tracking study enables observations planning and it is introductory to any engineering algorithm devoted to mechanically drive pointing and tracking of celestial targets from the Space Station. Since question might arise whether ISS-based Astronomy is nowadays scientifically worthwhile, a brief summary of the science rationale in Ultraviolet, useful to Astrophysics and Cosmology, is offered to the curious Astrophysicist who can decide on his own. From an operational point of view it is concluded that an observing programme can be carried out provided photon re-centering techniques are applied to the raw data, in order to free them from the effects of ISS vibrations.

Bernacca, P. L.; Facchinetti, C.; Fantino, E.

2010-12-01

19

An Italian tracking station for Cassini  

NASA Astrophysics Data System (ADS)

We present a feasibility study for a 64 m fully steerable parabolic radiotelescope capable of high efficiency operation at frequencies up to 100 GHz. If funds are made available, and construction rapidly started, the antenna would be available in time to be used as a tracking station for the Cassini radio science experiments.

Grueff, G.; Ambrosini, R.

1998-10-01

20

IET. Coupling station and track foundations under construction. Camera facing ...  

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

IET. Coupling station and track foundations under construction. Camera facing northerly. Four-rail track foundations lead to coupling station. Service leads from there will go through opening for "quick connects" below. Retaining wall under construction will separate earthen shielding of control building (out of view to right) from coupling station and track. Date: October 20, 1954. INEEL negative no. 12550 - Idaho National Engineering Laboratory, Test Area North, Scoville, Butte County, ID

21

1. VIEW WEST SOUTHWEST, UPPER STATION. INCLINE PLANE TRACK AND ...  

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

1. VIEW WEST SOUTHWEST, UPPER STATION. INCLINE PLANE TRACK AND LOWER STATION. - Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

22

4. VIEW SOUTHWEST, LOWER STATION FRONT, INCLINE PLANE TRACK, UPPER ...  

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

4. VIEW SOUTHWEST, LOWER STATION FRONT, INCLINE PLANE TRACK, UPPER STATION. - Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

23

5. VIEW SOUTHWEST, LOWER STATION FRONT, INCLINE PLANE TRACK, UPPER ...  

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

5. VIEW SOUTHWEST, LOWER STATION FRONT, INCLINE PLANE TRACK, UPPER STATION. - Monongahela Incline Plane, Connecting North side of Grandview Avenue at Wyoming Street with West Carson Street near Smithfield Street, Pittsburgh, Allegheny County, PA

24

NASA Human Research Program (HRP). International Space Station Medical Project (ISSMP).  

National Technical Information Service (NTIS)

This viewgraph presentation describes the various flight investigations performed on the International Space Station as part of the NASA Human Research Program (HRP). The evaluations include: 1) Stability; 2) Periodic Fitness Evaluation with Oxygen Uptake...

C. F. Sams

2009-01-01

25

NASA Targets March 1 Launch for Next SpaceX Station Resupply Mission; Media Accreditation Open  

NASA Website

NASA and its international partners are targeting Friday, March 1, as the launch date for the next cargo resupply flight to the International Space Station by Space Exploration Technologies (SpaceX), designated CRS-2.

26

Site Evaluation for Laser Satellite-Tracking Stations  

Microsoft Academic Search

Twenty-six locations for potential laser satellite-tracking stations, four of them actually already occupied in this role, have been reviewed in terms of their known local and regional geology and geophysics. Laser tracking techniques are now reaching a precision where tectonic motions of station sites can be significant. The chosen sites are scattered over the globe such that every major plate,

N. H. Mao; P. A. Mohr

1976-01-01

27

76 FR 64122 - NASA Advisory Committee; Renewal of NASA's International Space Station Advisory Committee Charter  

Federal Register 2010, 2011, 2012, 2013

...the Charter of the International Space Station Advisory...a renewal of the International Space Station Advisory...Committee is in the public interest in connection...Miller, Office of International and Interagency Relations, (202)...

2011-10-17

28

Managing NASA's International Space Station Logistics and Maintenance Program.  

National Technical Information Service (NTIS)

The International Space Station's Logistics and Maintenance program has had to develop new technologies and a management approach for both space and ground operations. The ISS will be a permanently manned orbiting vehicle that has no landing gear, no inte...

A. Butina

2001-01-01

29

NASA TV Provides Coverage of Space Station Spacewalk  

NASA Website

Two members of the Expedition 35 crew will venture outside the International Space Station on April 19 for a six-hour spacewalk to deploy and retrieve several science experiments and install a new navigational aid.

30

Acoustic emissions applications on the NASA Space Station  

SciTech Connect

Acoustic emission is being investigated as a way to continuously monitor the space station Freedom for damage caused by space debris impact and seal failure. Experiments run to date focused on detecting and locating simulated and real impacts and leakage. These were performed both in the laboratory on a section of material similar to a space station shell panel and also on the full-scale common module prototype at Boeing's Huntsville facility. A neural network approach supplemented standard acoustic emission detection and analysis techniques. 4 refs., 5 figs., 1 tab.

Friesel, M.A.; Dawson, J.F.; Kurtz, R.J.; Barga, R.S.; Hutton, P.H.; Lemon, D.K.

1991-08-01

31

IET distant contextual view of coupling station, tracks and retaining ...  

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

IET distant contextual view of coupling station, tracks and retaining wall. experiment shack on left side of coupling station remains from snaptran tests. Camera facing northerly. INEEL negative no. HD-21-7-3 - Idaho National Engineering Laboratory, Test Area North, Scoville, Butte County, ID

32

NASA Utilization of the International Space Station and the Vision for Space Exploration.  

National Technical Information Service (NTIS)

Under U.S. President Bush's Vision for Space Exploration (January 14, 2004), NASA has refocused its utilization plans for the International Space Station (ISS). This use will now focus on: (1) the development of countermeasures that will protect crews fro...

J. A. Robinson D. A. Thomas

2006-01-01

33

ISS Update: How Canada and NASA Work Together to Support the Station  

NASA Video Gallery

NASA Public Affairs Officer Kelly Humphries interviews Tim Braithwaite, Canadian Space Agency (CSA) Liaison Office Manager. The CSA Liaison Office is a small office at the Johnson Space Center (JSC) and the manager works with the space station program to ensure the agencies are working and communicating effectively together.

Mark Garcia

2012-12-20

34

NASA uses Eclipse RCP Applications for Experiments on the International Space Station.  

National Technical Information Service (NTIS)

Eclipse is going to space for the first time in 2013. The International Space Station (ISS) is used as a site for experiments any software developed as part of these experiments has to comply with extensive and strict user interface guidelines. NASA Ames ...

T. Cohen

2013-01-01

35

Environmental Assessment for Hawaii Tracking Station A-Side Antenna Remote Block Change Upgrade at Kaena Point Satellite Tracking Station, Hawaii.  

National Technical Information Service (NTIS)

This Environmental Assessment (EA) documents the potential environmental impacts of the construction and operation of a new Hawaii Tracking Station A-Side radome antenna at Kaena Point Satellite Tracking Station (KPSTS) on Oahu, Hawaii. The new antenna wo...

J. Kriz L. Aragon R. D. Moon

2011-01-01

36

Fast-Tracked Soyuz Docks to Station  

NASA Video Gallery

The Soyuz TMA-08M spacecraft carrying three new Expedition 35 crew members docks with the International Space Station at 10:28 p.m. EDT Thursday, completing its accelerated journey to the orbiting complex in less than six hours.

Gerald T Wright

2013-03-28

37

DISTINGUISHItdG TRACKS OF: MARTEN AND FISHER AT TRACK-PLATE STATIONS  

Microsoft Academic Search

i h Abstract: Managing and conserving uncommon mammals, such as fisher (Martes pennunti) and American marten (M. arnericana), depend upon a reliable mechanism to index their populations. In parts of their ranges where these species are not commercially harvested, baited track stations provide an alternative means to collect data on distribution and abundance. Although tracks of many species can be

WILLIAM J. ZIELINSKI; RICHARD L. TRUEX

38

29. "TEST TRACK, STATION '0' THROUGH '200' AREA." Specifications No. ...  

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

29. "TEST TRACK, STATION '0' THROUGH '200' AREA." Specifications No. ENG-OC-1-57-75, Drawing No. AF-6009-15, sheet 53 of 96, D.O. Series No. AF 1394/73, Rev. C. Stamped: RECORD DRAWING - AS CONSTRUCTED. Below stamp: Contract no. 5296 Rev. C, Date: 19 NOV 59. Drawing includes plan, section, and details of track. - Edwards Air Force Base, South Base Sled Track, Edwards Air Force Base, North of Avenue B, between 100th & 140th Streets East, Lancaster, Los Angeles County, CA

39

Microgravity research results and experiences from the NASA/MIR space station program.  

PubMed

The Microgravity Research Program (MRP) participated aggressively in Phase 1 of the International Space Station Program using the Russian Mir Space Station. The Mir Station offered an otherwise unavailable opportunity to explore the advantages and challenges of long duration microgravity space research. Payloads with both National Aeronautics and Space Agency (NASA) and commercial backing were included as well as cooperative research with the Canadian Space Agency (CSA). From this experience, much was learned about long-duration on-orbit science utilization and developing new working relationships with our Russian partner to promote efficient planning, operations, and integration to solve complexities associated with a multiple partner program. This paper focuses on the microgravity research conducted onboard the Mir space station. It includes the Program preparation and planning necessary to support this type of cross increment research experience; the payloads which were flown; and summaries of significant microgravity science findings. PMID:14503490

Schlagheck, R A; Trach, B L

2003-12-01

40

Expedition 34 Space Station Commander Kevin Ford to Visit NASA's Marshall Center on Aug. 8; Media Invited  

NASA Website

Astronaut Kevin Ford, who lived and worked nearly five months as the Expedition 34 commander aboard the International Space Station, will visit NASA's Marshall Space Flight Center in Huntsville, Ala., Aug. 8.

41

Space station communications and tracking equipment management/control system  

NASA Astrophysics Data System (ADS)

Design details of a communications and tracking (C and T) local area network and the distribution system requirements for the prospective space station are described. The hardware will be constructed of LRUs, including those for baseband, RF, and antenna subsystems. It is noted that the C and T equipment must be routed throughout the station to accommodate growth of the station. Configurations of the C and T modules will therefore be dependent on the function of the space station module where they are located. A block diagram is provided of a sample C and T hardware distribution configuration. A topology and protocol will be needed to accommodate new terminals, wide bandwidths, bidirectional message transmission, and distributed functioning. Consideration will be given to collisions occurring in the data transmission channels.

Kapell, M. H.; Seyl, J. W.

42

Satellite observations with a single radar tracking station  

NASA Astrophysics Data System (ADS)

Handicaps in observations due to the relative motion between a satellite and the radar station are highlighted. It is shown that decaying high-risk space objects can be observed by a single radar tracking station. But less than 10% of an orbit and 50% of all orbits per day are within line-of-sight of the radar station. Breaks of 14 hr between 2 consecutive passages are possible. This can cause total target loss because of outdated orbit data. Cooperation with observation stations in other parts of the world is therefore desirable. In order to fit the observation requirements the radar should deliver angular direction, range, and at least echo amplitude measurements.

Mehrholz, D.

43

NASA utilization of the International Space Station and the Vision for Space Exploration  

NASA Astrophysics Data System (ADS)

In response to the US President's Vision for Space Exploration (January 14, 2004), NASA has revised its utilization plans for International Space Station (ISS) to focus on (1) research on astronaut health and the development of countermeasures that will protect our crews from the space environment during long-duration voyages, (2) ISS as a test bed for research and technology developments that will insure vehicle systems and operational practices are ready for future exploration missions, (3) developing and validating operational practices and procedures for long-duration space missions. In addition, NASA will continue a small amount of fundamental research in life and microgravity sciences. There have been significant research accomplishments that are important for achieving the Exploration Vision. Some of these have been formal research payloads, while others have come from research based on the operation of ISS. We will review a selection of these experiments and results, as well as outline some of ongoing and upcoming research. The ISS represents the only microgravity opportunity to perform on-orbit long-duration studies of human health and performance and technologies relevant for future long-duration missions planned during the next 25 years. Even as NASA focuses on developing the Orion spacecraft and return to the moon (2015 2020), research on and operation of the ISS is fundamental to the success of NASA's Exploration Vision.

Robinson, Julie A.; Thumm, Tracy L.; Thomas, Donald A.

2007-06-01

44

Precise Doppler tracking from the Medicina VLBI station  

NASA Astrophysics Data System (ADS)

The first opposition test of Doppler tracking the Ulysses spacecraft from the Medicina VLBI (Very Long Base Interferometry) station (Italy) proved its capability to perform a systematic search for gravitational waves. In house and JPL (Jet Propulsion Laboratory) data analysis showed that the target Allan variance of 3 x 10(exp -14) at 1000 s, planned for the DSN antennas was also achieved from the station. The main observation campaign during the second opposition phase will last for thirty continuous nights--from mid Feb. to mid Mar. 1992. The main hardware and software features developed for this application, together with some results of the first opposition test, are described.

Ambrosini, R.; Comoretto, G.; Iess, L.; Messeri, A.

1992-06-01

45

Station position results using concentrated C-band tracking of GEOS3  

Microsoft Academic Search

Station positions for the GEOS 3 C Band tracking network were estimated using C Band and laser data taken during a two-week concentrated tracking period. The C Band stations are located primarily in the continental United States and on Western Atlantic islands. The network, however, included stations in Hawaii, in West Germany, and on Kwajalein atoll. Estimated accuracies for the

W. B. Krabill; C. F. Martin

1978-01-01

46

NASA eClips™: Cohesion and Adhesion On Board the International Space Station  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

47

NASA eClips™: Environmental Control on the International Space Station  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

48

GLGM-3: A degree-150 lunar gravity model from the historical tracking data of NASA Moon orbiters  

Microsoft Academic Search

In preparation for the radio science experiment of the Lunar Reconnaissance Orbiter (LRO) mission, we analyzed the available radio tracking data of previous NASA lunar orbiters. Our goal was to use these historical observations in combination with the new low-altitude data to be obtained by LRO. We performed Precision Orbit Determination on trajectory arcs from Lunar Orbiter 1 in 1966

E. Mazarico; F. G. Lemoine; Shin-Chan Han; D. E. Smith

2010-01-01

49

Design, fabrication and test of a prototype double gimbal control moment gyroscope for the NASA Space Station  

Microsoft Academic Search

Recognizing the need to develop future technologies in support of the Space Station, NASA's Advanced Development Program (ADP) placed as its goal the design and fabrication of a prototype 4750 Newton-meter-second (3500 ft-lb-sec) Control Moment Gyroscope (CMG). The CMG uses the principle of momentum exchange to impart control torques for counteracting vehicle disturbances. This paper addresses the selection of the

Joseph Blondin; Eric Hahn; John Kolvek; Lewis Cook; Paul Golley

1989-01-01

50

High-resolution robot tracking and direction finding for space station environment  

NASA Astrophysics Data System (ADS)

In the past few years the problem of location finding and tracking of extravehicular robots in space station environment, and the related problem of estimating the parameters of signals in noise, have attracted considerable interest. Conventional direction finding, tracking, and locating techniques such as maximum likelihood (ML) and multiple signal characterization (MUSIC) are proving inadequate to support the full and effective utilization of robotics in a space station environment. The scope of this work is to provide a new and more efficient signal processing technique for a space station robotic tracking system which overcomes existing technical limitations such as radio transmission multipath, station reflections, the number of robots, space station environment, stringent resolution requirements, and space station architecture. In general, this work contains block level design and study of a communication system for a space station involving spread spectrum and digital processing of signal techniques that achieves as space station robotic tracking implementation. This report contains an extensive analysis of the system performance from the following points of view: utilization of a chirp signal, which, in conjunction with a polling procedure, allows for individual robot identification, location and tracking; estimate the number of antennae; determine the location of the antennae on the space station; generate a detailed block diagram design; and perform an overall system analysis that considers the effects of signal multipath.

Shahrabi, Kamal

1993-03-01

51

A New Direction for the NASA Materials Science Research using the International Space Station  

NASA Astrophysics Data System (ADS)

In 2001 NASA created a fifth Strategic Enterprise, the Office of Biological and Physical Research (OBPR), to bring together physics, chemistry, biology, and engineering to foster interdisciplinary research. The Materials Science Program is one of five Microgravity Research disciplines within this new Enterprise's Division of Physical Sciences Research. The Materials Science Program will participate within this new enterprise structure in order to facilitate effective use of ISS facilities, target scientific and technology questions and transfer results for Earth benefits. The Materials Science research will use a low gravity environment for flight and ground-based research in crystallization, fundamental processing, properties characterization, and biomaterials in order to obtain fundamental understanding of various phenomena effects and relationships to the structures, processing, and properties of materials. Completion of the International Space Station's (ISS) first major assembly, during the past year, provides new opportunities for on-orbit research and scientific utilization. The Enterprise has recently completed an assessment of the science prioritization from which the future materials science ISS type payloads will be implemented. Science accommodations will support a variety of Materials Science payload hardware both in the US and international partner modules with emphasis on early use of Express Rack and Glovebox facilities. This paper addresses the current scope of the flight and ground investigator program. These investigators will use the various capabilities of the ISS lab facilities to achieve their research objectives. The type of research and classification of materials being studied will be addressed. This includes the recent emphasis being placed on radiation shielding, nanomaterials, propulsion materials, and biomaterials type research. The Materials Science Program will pursue a new, interdisciplinary approach, which contributes, to Human Space Flight Exploration research. The Materials Science Research Facility (MSRF) and other related American and International experiment modules will serve as the foundation for the flight research environment. A summary will explain the concept for materials science research processing capabilities aboard the ISS along with the various ground facilities necessary to support the program.

Schlagheck, R.

2002-01-01

52

International Space Station: Improving Life on Earth and in Space. The NASA Research Plan, an Overview.  

National Technical Information Service (NTIS)

This ISS Research Plan overview is a NASA implementation plan for the ISS program and it describes how NASA will utilize the ISS platform. This document, when coupled with the technical version of the ISS research plan to be published in 1998 will be a co...

1998-01-01

53

NASA Shuttle-Mir Web  

NSDL National Science Digital Library

The Shuttle/Mir site describes the cooperation, investigation, and operation components of the Shuttle/Mir project. Visitors can also find the latest space station news, information on the crew, videos, photos, and tracking information (through Hot Borsht). NASA related sites describe current happenings at NASA and also provide homepages of NASA missions including the Cassini space probe, the Mars Global Surveyor and, most recently, the launch of the Columbia space shuttle. Space exploration provides clues to how the solar system was formed, why life exists on earth and not on other known planets, and what the structures of the universe, matter, and energy are.

1998-01-01

54

Structural Dynamic Interaction with Solar Tracking Control for Evolutionary Space Station Concepts.  

National Technical Information Service (NTIS)

The sun tracking control system design of the Solar Alpha Rotary Joint (SARJ) and the interaction of the control system with the flexible structure of Space Station Freedom (SSF) evolutionary concepts are addressed. The significant components of the space...

T. W. Lim P. A. Cooper J. K. Ayers

1992-01-01

55

ISS Update: Keeping Track of Station Inventory – 03.14.13  

NASA Video Gallery

Public Affairs Officer Dan Huot interviews Rob Adams, Inventory and Stowage Officer, inside the Mission Control Center. Adams and his team keep track of the gear aboard the International Space Station and its location on the orbital laboratory.

Mark Garcia

2013-03-14

56

July Space Station Spacewalks to be Previewed and Broadcast on NASA TV  

NASA Website

Two Expedition 36 astronauts will venture outside the International Space Station twice in July on spacewalks to prepare for a new Russian module and perform additional installations on the station's backbone.

57

Tracking micro reentering USV with TDRS and ground stations using adaptive IMM method  

Microsoft Academic Search

In this paper, a tracking system with multi-sensors is presented, in which a sub-orbit USV (unmanned space vehicle) of wave-rider shape is tracked by a TDRS (Tracking and Data Relay Satellite) and ground stations. Because of high lift-drag ratio and maneuverability, the vehicle, once is used in reentering purpose, a complicated trajectory will be produced and cause big challenges for

Li-Qiang Hou; Heng-Nian Li; Fu-Ming Huang; Pu Huang

2011-01-01

58

76 FR 52016 - NASA International Space Station Advisory Committee and the Aerospace Safety Advisory Panel; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Services for the International Space Station (ISS...will be open to the public up to the seating...Miller, Office of International and Interagency Relations, (202) 358-1527...will be open to the public up to the...

2011-08-19

59

Space Station: NASA's software development approach increases safety and cost risks. Report to the Chairman, Committee on Science, Space, and Technology, House of Representatives  

NASA Astrophysics Data System (ADS)

The House Committee on Science, Space, and Technology asked NASA to study software development issues for the space station. How well NASA has implemented key software engineering practices for the station was asked. Specifically, the objectives were to determine: (1) if independent verification and validation techniques are being used to ensure that critical software meets specified requirements and functions; (2) if NASA has incorporated software risk management techniques into program; (3) whether standards are in place that will prescribe a disciplined, uniform approach to software development; and (4) if software support tools will help, as intended, to maximize efficiency in developing and maintaining the software. To meet the objectives, NASA proceeded: (1) reviewing and analyzing software development objectives and strategies contained in NASA conference publications; (2) reviewing and analyzing NASA, other government, and industry guidelines for establishing good software development practices; (3) reviewing and analyzing technical proposals and contracts; (4) reviewing and analyzing software management plans, risk management plans, and program requirements; (4) reviewing and analyzing reports prepared by NASA and contractor officials that identified key issues and challenges facing the program; (5) obtaining expert opinions on what constitutes appropriate independent V-and-V and software risk management activities; (6) interviewing program officials at NASA headquarters in Washington, DC; at the Space Station Program Office in Reston, Virginia; and at the three work package centers; Johnson in Houston, Texas; Marshall in Huntsville, Alabama; and Lewis in Cleveland, Ohio; and (7) interviewing contractor officials doing work for NASA at Johnson and Marshall. The audit work was performed in accordance with generally accepted government auditing standards, between April 1991 and May 1992.

1992-06-01

60

NASA Human Space Flight Realtime Data  

NSDL National Science Digital Library

Wondering when that spacecraft will be cruising over your city during the next ten days? Visit the NASA Human Space Flight Realtime Data page to find out. Satellite sighting information by city is provided by NASA's Johnson Space Center. Visitors to the site can choose a city from the list provided or enter their location using the nifty NASA Skywatch Java applet. Other highlights of the NASA Human Space Flight Realtime Data page include maps of Space Shuttle landing tracks (.gif) and deorbit parameters, and Space Shuttle and Space Station orbital tracking information that includes altitude, location coordinates, speed, and more. Definitions and illustrations of orbital tracking elements and coordinate system terminology make the site accessible to general audiences.

2001-01-01

61

Wideband high efficiency envelope tracking integrated circuit for micro-base station power amplifiers  

Microsoft Academic Search

This paper presents a high performance BCD (Bipolar-CMOS-DMOS) monolithic envelope tracking IC to achieve high efficiency and linearity for micro-base station power amplifier applications. Measurement of the BCD high voltage (Vdd = 15 V) envelope amplifier shows an efficiency of 72% using WCDMA input signals (7.7 dB PAR). An envelope tracking power amplifier including a GaN FET RF stage has

Myoungbo Kwak; Donald Kimball; Calogero Presti; Antonino Scuderi; Carmelo Santagati; Jonmei Yan; Peter Asbeck; Lawrence Larson

2011-01-01

62

Computer simulation helps keep down costs for NASA's “lifeboat” for the international space station  

Microsoft Academic Search

The use of computer simulation helped to significantly reduce the estimated costs of building the International Space Station's (ISS) X-38 emergency crew return vehicle. Lockheed Martin engineers wanted to determine the actual flow conditions within the X-38 cabin, but ruled out physical testing as they lacked a physical prototype of the X-38 and because such testing could prove very difficult.

Brad Eckhardt; Laith Zori

2002-01-01

63

Base-station tracking in mobile communications using a switched parasitic antenna array  

Microsoft Academic Search

Base-station tracking in mobile communications benefits from a directional antenna and so requires direction finding technology. A novel technique for electronically directing the radiation pattern of an antenna array employs a directional array with only one active element and three parasitic elements operating near resonance. Three different methods of direction finding are assessed; a coarse angular location method, a precise

Stephanie L. Preston; David V. Thiel; Trevor A. Smith; S. G. O'Keefe; Jun Wei Lu

1998-01-01

64

Kalman Filter Satellite Orbit Improvement Using Laser Ranging Measurements from a Single Tracking Station.  

National Technical Information Service (NTIS)

The accuracy of a computer program (SORKA) which uses the laser range observations acquired at one tracking station in order to provide real time position prediction updates during a pass is assessed. The program is compared with a GEODYN GEOS 1 orbit sol...

K. F. Wakker B. A. C. Ambrosius

1981-01-01

65

Vent and Station Test (VST) Facility Single and Double Track Station Testing.  

National Technical Information Service (NTIS)

The report concerns ventilation and environmental control in subway rapid transit systems and is one of many leading to a subway environmental design handbook. The report is to present test data generated in the VST facility for single and double track st...

1972-01-01

66

Tracks in Olivine Crystals from the Marjalahti and Eagle Station Pallasites: Identification of the Transuranic Nuclei in Galactic Cosmic Rays  

NASA Astrophysics Data System (ADS)

Track analyze in olivine crystals of pallasites Marjalahti and Eagle Station give possibility to identify the charge of the super-heavy nuclei in galactic cosmic rays. 6000 tracks were detected. Three tracks are identified as trans-uranic nuclei of Z>110.

Aleksandrov, A. B.; Bagulya, A. V.; Goncharova, L. A.; Ivliev, A. I.; Kalinina, G. V.; Kashkarov, L. L.; Konovalova, N. S.; Poluhina, N. G.; Starkov, N. I.; Vladimirov, M. S.

2013-09-01

67

Using Artificial Intelligence Planning to Generate Antenna Tracking Plans  

Microsoft Academic Search

This paper describes the application of Artificial Intelligence planning techniques to the problem of antenna track plan generation for a NASA Deep Space Communications Station. The described system enables an antenna communications station to automatically respond to a set of tracking goals by correctly configuring the appropriate hardware and software to provide the requested communication services. To perform this task,

Forest Fisher; Tara A. Estlin; Darren Mutz; Steve A. Chien

1999-01-01

68

Acoustic emissions verification testing of International Space Station experiment racks at the NASA Glenn Research Center Acoustical Testing Laboratory  

Microsoft Academic Search

The Acoustical Testing Laboratory (ATL) at the NASA John H. Glenn Research Center (GRC) in Cleveland, OH, provides acoustic emission testing and noise control engineering services for a variety of specialized customers, particularly developers of equipment and science experiments manifested for NASA's manned space missions. The ATL's primary customer has been the Fluids and Combustion Facility (FCF), a multirack microgravity

James C. Akers; Paul J. Passe; Beth A. Cooper

2005-01-01

69

Fast track'' lunar NTR systems assessment for NASA's first lunar outpost and its evolvability to Mars  

SciTech Connect

Integrated systems and missions studies are presented for an evolutionary lunar-to-Mars space transportion system (STS) based on nuclear thermal rocket (NTR) technology. A standardized'' set of engine and stage components are identified and used in a building block'' fashion to configure a variety of piloted and cargo, lunar and Mars vehicles. The reference NTR characteristics include a thrust of 50 thousand pounds force (klbf), specific impulse (I[sub sp]) of 900 seconds, and an engine thrust-to-weight ratio of 4.3. For the National Aeronautics and Space Administration's (NASA) First Lunar Outpost (FLO) mission, an expendable NTR stage powered by two such engines can deliver [similar to]96 metric tonnes (t) to trans-lunar injection (TLI) conditions for an initial mass in low Earth orbit (IMLEO) of [similar to]198 t compared to 250 t for a cryogenic chemical system. The stage liquid hydrogen (LH[sub 2]) tank has a diameter, length, and capacity of 10 m, 14.5 m and 66 t, respectively. By extending the stage length and LH[sub 2] capacity to [similar to]20 m and 96 t, a single launch Mars cargo vehicle could deliver to an elliptical Mars parking orbit a 63 t Mars excursion vehicle (MEV) with a 45 t surface payload. Three 50 klbf engines and the two standardized LH[sub 2] tanks developed for the lunar and Mars cargo vehicles are used to configure the vehicles supporting piloted Mars missions as early as 2010. The modular'' NTR vehicle approach forms the basis for an efficient STS able to handle the needs of a wide spectrum of lunar and Mars missions.

Borowski, S.K. (Nuclear Propulsion Office, NASA Lewis Research Center, 21000 Brookpark Road, Cleveland, Ohio 44135 (United States)); Alexander, S.W. (Advanced Space Analysis Office NASA Lewis Research Center, 21000 Brookpark Road, Cleveland, Ohio 44135 (United States))

1993-01-10

70

``Fast track'' lunar NTR systems assessment for NASA's first lunar outpost and its evolvability to Mars  

NASA Astrophysics Data System (ADS)

Integrated systems and missions studies are presented for an evolutionary lunar-to-Mars space transportion system (STS) based on nuclear thermal rocket (NTR) technology. A ``standardized'' set of engine and stage components are identified and used in a ``building block'' fashion to configure a variety of piloted and cargo, lunar and Mars vehicles. The reference NTR characteristics include a thrust of 50 thousand pounds force (klbf), specific impulse (Isp) of 900 seconds, and an engine thrust-to-weight ratio of 4.3. For the National Aeronautics and Space Administration's (NASA) First Lunar Outpost (FLO) mission, an expendable NTR stage powered by two such engines can deliver ~96 metric tonnes (t) to trans-lunar injection (TLI) conditions for an initial mass in low Earth orbit (IMLEO) of ~198 t compared to 250 t for a cryogenic chemical system. The stage liquid hydrogen (LH2) tank has a diameter, length, and capacity of 10 m, 14.5 m and 66 t, respectively. By extending the stage length and LH2 capacity to ~20 m and 96 t, a single launch Mars cargo vehicle could deliver to an elliptical Mars parking orbit a 63 t Mars excursion vehicle (MEV) with a 45 t surface payload. Three 50 klbf engines and the two standardized LH2 tanks developed for the lunar and Mars cargo vehicles are used to configure the vehicles supporting piloted Mars missions as early as 2010. The ``modular'' NTR vehicle approach forms the basis for an efficient STS able to handle the needs of a wide spectrum of lunar and Mars missions.

Borowski, Stanley K.; Alexander, Stephen W.

1993-01-01

71

Fast track NTR systems assessment for NASA's first lunar outpost scenario  

NASA Astrophysics Data System (ADS)

Integrated systems and mission study results are presented which quantify the rationale and benefits for developing and using nuclear thermal rocket (NTR) technology for returning humans to the moon in the early 2000's. At present, the Exploration Program Office (ExPO) is considering chemical propulsion for its 'First Lunar Outpost' (FLO) mission, and NTR propulsion for the more demanding Mars missions to follow. The use of an NTR-based lunar transfer stage, capable of evolving to Mars mission applications, could result in an accelerated schedule, reduced cost approach to moon/Mars exploration. Lunar mission applications would also provide valuable operational experience and serve as a 'proving ground' for NTR engine and stage technologies. In terms of performance benefits, studies indicate that an expendable NTR stage powered by two 50 klbf engines can deliver approximately 96 metric tons (t) to trans-lunar injection (TLI) conditions for an initial mass in low earth orbit (IMLEO) of approximately 199 t compared to 250 t for a cryogenic chemical TLI stage. The NTR stage liquid hydrogen (LH2) tank has a 10 m diameter, 14.8 m length, and 68 t LH2 capacity. The NTR utilizes a 'graphite' fuel form consisting of coated UC2 particles in a graphite substrate, and has a specific impulse capability of approximately 870 s, and an engine thrust-to-weight ratio of approximately 4.8. The NTR stage and its piloted FLO lander has a total length of approximately 38 m and can be launched by a single Saturn V-derived heavy lift launch vehicle (HLLV) in the 200 to 250 t-class range. The paper summarizes NASA's First Lunar Outpost scenario, describes characteristics for representative engine/stage configurations, and examines the impact on engine selection and vehicle design resulting from a consideration of alternative NTR fuel forms and lunar mission profiles.

Borowski, Stanley K.; Alexander, Stephen W.

1994-10-01

72

Modeling and analysis of selected space station communications and tracking subsystems  

NASA Astrophysics Data System (ADS)

The Communications and Tracking System on board Space Station Freedom (SSF) provides space-to-ground, space-to-space, audio, and video communications, as well as tracking data reception and processing services. Each major category of service is provided by a communications subsystem which is controlled and monitored by software. Among these subsystems, the Assembly/Contingency Subsystem (ACS) and the Space-to-Ground Subsystem (SGS) provide communications with the ground via the Tracking and Data Relay Satellite (TDRS) System. The ACS is effectively SSF's command link, while the SGS is primarily intended as the data link for SSF payloads. The research activities of this project focused on the ACS and SGS antenna management algorithms identified in the Flight System Software Requirements (FSSR) documentation, including: (1) software modeling and evaluation of antenna management (positioning) algorithms; and (2) analysis and investigation of selected variables and parameters of these antenna management algorithms i.e., descriptions and definitions of ranges, scopes, and dimensions. In a related activity, to assist those responsible for monitoring the development of this flight system software, a brief summary of software metrics concepts, terms, measures, and uses was prepared.

Richmond, Elmer Raydean

1993-12-01

73

NASA: Data on the Web.  

ERIC Educational Resources Information Center

Provides an annotated bibliography of selected NASA Web sites for K-12 math and science teachers: the NASA Lewis Research Center Learning Technologies K-12 Home Page, Spacelink, NASA Quest, Basic Aircraft Design Page, International Space Station, NASA Shuttle Web Site, LIFTOFF to Space Education, Telescopes in Education, and Space Educator's…

Galica, Carol

1997-01-01

74

NASA: Data on the Web.  

ERIC Educational Resources Information Center

|Provides an annotated bibliography of selected NASA Web sites for K-12 math and science teachers: the NASA Lewis Research Center Learning Technologies K-12 Home Page, Spacelink, NASA Quest, Basic Aircraft Design Page, International Space Station, NASA Shuttle Web Site, LIFTOFF to Space Education, Telescopes in Education, and Space Educator's…

Galica, Carol

1997-01-01

75

NASA Selects Construction Management Contractor  

NASA Website

NASA has selected Frontier-Arrowhead NASA Services Joint Venture of Kansas City, Mo., to manage and oversee construction projects at the agency's Glenn Research Center in Cleveland and Plum Brook Station in Sandusky, Ohio.

76

Learning About 'Veggie' at the NASA Social  

NASA Website

Physical Sciences Division Director at NASA Headquarters, talks about the human body in microgravity and other life sciences at a NASA Social exploring science on the International Space Station at NASA Headquarters, Wednesday, Feb. 20, 2013 ...

77

ISS Update: NASA Astronaut Mike Fincke  

NASA Video Gallery

NASA Public Affairs Officer Rob Navias talks with NASA Astronaut Mike Fincke inside the Mission Control Center at Johnson Space Center. They discuss the current activities taking place aboard the International Space Station as well as Fincke’s experience on orbit. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Mark Garcia

2012-06-29

78

Material compatibility and simulation testing for the Brayton engine solar receiver for the NASA Space Station Freedom solar dynamic option  

Microsoft Academic Search

Experimental investigations have been conducted in the areas of material compatibility and solar simulation testing for the heat receiver assembly (HRA) in the Brayton engine for the solar dynamic option for Space Station Freedom. The HRA configuration is a cylindrical receiver lined with tubes; each tube is surrounded by phase change material (PCM). The Brayton-cycle working fluid flows inside the

Hal J. Strumpf; R. P. Rubly; M. G. Coombs

1989-01-01

79

Tracking and Data Relay Satellite Launches  

NASA Website

A United Launch Alliance Atlas V 401 rocket streaks away from Space Launch Complex 41 into the night sky over Cape Canaveral Air Force Station in Florida, carrying NASA's Tracking and Data Relay Satellite-K, TDRS-K, to orbit. The TDRS-K ...

80

NASA NOW Minute: Expedition 26  

NASA Video Gallery

In this installment of NASA Now, meet associate International Space Station program scientist Tara Ruttley, who talks about the complexity of conducting research from this one-of-a-kind orbiting science lab. The program focus is on biology and biotechnology experiments being conducted on Expedition 26. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-02-09

81

ISS Update: Preparing to Leave the Station  

NASA Video Gallery

NASA Public Affairs Officer Amiko Kauderer interviews NASA astronaut Mike Fossum about his time as commander of the International Space Station's Expedition 29 crew, including his preparations for returning to Earth. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

John Kossum

2012-04-18

82

NASA Quest  

NSDL National Science Digital Library

As part of NASA's Learning Technologies Project, NASA Quest has been connecting students to the people of NASA through the various pages at the website--Learning Technology Channel, Space Team Online, Aerospace Team Online, and Women of NASA. The NASA Ques

Ashby, Susanne

2000-09-01

83

Morphological analysis of Japanese quail embryos developed onboard orbital station "Mir" during NASA-"Mir" research program experiments (1990-1996)  

NASA Astrophysics Data System (ADS)

From 1990 to 1996, 5 experiments onboard "MIR" space station which allowed to receive important data dynamics of embryonic development of birds in micro gravitational conditions was carried out by NASA-"MIR" research program, using fertilized eggs of Japanese quail, as convenient object for space experiments. Here we represent the comparative morphomethrical analysis of incubation modes influence on a morphogenesis of Japanese quail. The data allowed us to make the conclusion that the embryonic development of Japanese quail in weightlessness conditions results in authentic decrease of length and body mass parameters in comparison with the embryos, developed in the ground laboratory conditions. The development of a skeleton and extremities, in general developing in normal way, demonstrates decreasing of legs length (10-12%) and body mass (8-12%), but there are no differences in wings length. At the same time we didn't find any significant differences in extremities length in laboratory and synchronic experimental groups of embryos. Analysis didn't show any significant influence of location of eggs in the incubator on mortality of the embryos. The main results of experiments have shown presence of morphometrical changes connected first of all with presence of weightlessness in the surrounded environment. In general, the data a alysis oncen again confirms the assumption that the changed gravity is not an interrupt factor for development of Japanese quail nestlings from fertilized eggs, but further experiments are required for detailed understanding of weightless influence on birds development.

Gusev, O.; Gyrieva, T.; Dadasheva, O.; Pahomov, A.; Pirt, C.

84

Advanced spacecraft tracking techniques using the Tracking and Data Relay Satellite System \\/TDRSS  

Microsoft Academic Search

The TDRSS will consist initially of two geosynchronous satellites and a common ground station at White Sands, New Mexico. According to current schedules, operations are to begin in November 1980. The overall TDRSS will provide high and low bit-rate telemetry, commands, and satellite-to-satellite tracking services. Each Tracking and Data Relay Satellite (TDRS) will have four antenna systems for NASA use.

J. Teles; C. Ayres

1977-01-01

85

Space Station Live: Station Communications Upgrade  

NASA Video Gallery

NASA Public Affairs Officer Nicole Cloutier-Lemasters recently spoke with Penny Roberts, one of the leads for the International Space Station Avionics and Software group, about the upgrade of the Ku-band communications gear aboard the station.

Gerald T Wright

2013-04-12

86

Tracking Changes in Northwest and Southeast Greenland with NASA's Operation IceBridge and the Airborne Topographic Mapper  

NASA Astrophysics Data System (ADS)

The northwestern and southeastern flanks of the Greenland Ice Sheet have each been undergoing major regional-scale changes in recent years. The southeast experienced near synchronous thinning of many of its major outlet glaciers, followed by slowing of much of this thinning and even thickening of some glaciers more recently. Widespread thinning in the northwest, particularly along the upper Baffin Bay coast south of Thule Air Base, probably began much more recently, according to results from the Gravity Recovery and Climate Experiment (GRACE) and other techniques. Here we present initial results from NASA's Airborne Topographic Mapper (ATM), deployed in extensive airborne surveys of these and other Greenland regions as part of the 2010 IceBridge campaign. During this campaign we flew centerline surveys of approximately a dozen glaciers in each of these two regions, most of which were exact repeats of earlier surveys and from which we can derive precise changes in the surface topography of these glaciers. In the case of the southeast, many of the glacier centerlines have now been surveyed in three consecutive years with the ATM and we can derive not only changes in the glaciers, but trends in these changes as well. We present these results and assess how they compare with GRACE results and other investigations.

Sonntag, J. G.; Krabill, W. B.; Manizade, S. S.; Yungel, J.

2010-12-01

87

NASA Now Minute: Exercise Physiology: Countermeasures  

NASA Video Gallery

Aaron Weaver, a biomedical engineer, discusses the importance of doing exercise while in space and provides a glimpse into one of NASA’s laboratories developing and improving the exercise equipment for astronauts on board the International Space Station. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-11-29

88

Students Speak With NASA Astronaut Scott Kelly  

NASA Video Gallery

From NASA’s International Space Station Mission Control Center, NASA astronaut Scott Kelly participates in a Digital Learning Network (DLN) event with students in the Galena Park Independent School District in Texas. The DLN connects students and teachers with NASA experts and education specialists using online communication technologies like video/web conferencing and webcasting. Register for free, interactive events listed in the catalog or watch the webcasts. http://dln.nasa.gov

Gerald T Wright

2012-07-19

89

Students Speak With NASA Astronaut Mario Runco  

NASA Video Gallery

From NASA’s International Space Station Mission Control Center, NASA astronaut Mario Runco participates in a Digital Learning Network (DLN) event with students in the Newell School District in Newell, S.D. The DLN connects students and teachers with NASA experts and education specialists using online communication technologies like video/web conferencing and webcasting. Register for free, interactive events listed in the catalog or watch the webcasts. http://dln.nasa.gov

John Kossum

2012-06-07

90

FTIR reflectance of selected minerals and their mixtures: implications for ground temperature-sensor monitoring on Mars surface environment (NASA/MSL-Rover Environmental Monitoring Station).  

PubMed

The Rover Environmental Monitoring Station (REMS) is one of NASA/MSL's instruments, which has been designed for measuring ambient pressure, humidity, wind speed and direction, UV radiation, and air and ground temperature (GT). The GT-sensor is dedicated to measure the real temperature of the Martian surface, integrating the IR energy coming from the ground. The existing IR spectral data of Martian dust, rocks and sediments allow for comparing the Martian spectra with the spectra of different terrestrial minerals and lithologies, and those of their alteration and weathering products. The FTIR reflectance of a set of selected astrobiologically significant minerals (including oxides, oxi/hydroxides, sulfates, chlorides, opal and clays) and basalt (as the main and most widespread volcanic Martian rock) was measured, considering different mixing amounts, and covering the specific working wavelength range of the REMS' GT-sensor. The results obtained show important percentage increases or decreases of reflectance in the entire wavelength range (e.g. basalt-hematite vs. basalt-magnetite) and specific variations limited to some spectral bands (e.g. basalt-smectite vs. basalt-jasper). The basalt reflectance percentage increases or decreases, even up to 100%, depending on the mixing of the different minerals. This unequivocally confirms the need for considering the chemical-mineralogical assemblages (and their textures) for any investigation and interpretation of Mars surface environment. Some complementary applications of this research on our planet, either in relation to the specific performances and characteristics of the GT-sensor autonomous recalibration system, or those oriented to carrying out similar studies on different types of terrestrial environmental settings, are also described. PMID:20449234

Martín-Redondo, M Paz; Martínez, Eduardo Sebastian; Sampedro, M Teresa Fernández; Armiens, Carlos; Gómez-Elvira, Javier; Martinez-Frias, Jesus

2009-06-02

91

Adapting a ground-based laser ranging system at NASA-GSFC for identification and tracking of orbital debris  

NASA Astrophysics Data System (ADS)

The mitigation of orbital debris was addressed in the most recent release of the National Space Policy directing space faring agencies to pursue technologies that will "mitigate and remove on-orbit debris." No matter what abatement technology is developed and deployed, still lacking is the remote sensing infrastructure to locate and track these objects with adequate precision. We propose using GSFC's ground-based laser ranging facility to provide meter-level or better ranging precision on optically passive 10-30 cm orbital debris targets with the goal of improving current predictions up to 85%. The improved location accuracy also has the immediate benefit of reducing costly false alarms in collision predictions for existing assets.

Coyle, D. B.; Stysley, Paul R.; McGarry, Jan F.; Hull, Scott M.; Getzandanner, Kenneth M.; Young, Romae P.

2013-05-01

92

Determination of relative position between two stations using the translocation technique in satellite doppler tracking  

NASA Astrophysics Data System (ADS)

The main errors in satellite Doppler positioning are ephemeris errors and refraction errors. For different stations observing the same satellite pass, these errors are correlated. By taking advantage of the correlation, we can increase the positioning accuracy. We have applied this "translocation" technique /5,6/ to 14 passes on 1980 August 23-24 observed at Beijing and Shanghai. Our result on the relative coordinates between these two stations has an internal accuracy of ± 2m, and our result on the baseline length differs from the geodetic result by 1.5m.

Zhu, Wen-yao; Xu, Hua-guan; Chen, Xing; Tang, Guo-qiang

1982-09-01

93

A Brief History of NASA  

NSDL National Science Digital Library

This brief history of the National Aeronautics and Space Administration (NASA) begins with the agency's origins during the Cold War and recounts the early manned and unmanned missions (Mercury, Gemini, Pioneer, Voyager, and others), the landmark Apollo Moon missions, and NASA's later projects, such as the Space Shuttle, the Hubble telecope, and the International Space Station.

94

Review of station keeping strategies for elliptically orbiting constellations in along-track formation  

Microsoft Academic Search

Three techniques for station keeping an orbiting constellation of satellites in an elliptical orbit are developed: (1) based on an application of the linearized Tschauner–Hempel (TH) equations for the motion of a daughter satellite relative to a reference (mother) satellite together with the linear quadratic regulator (LQR) control strategy which can be used in a piecewise adaptive manner; (2) since

Peter M. Bainum; Zhaozhi Tan; Xiaodong Duan

2005-01-01

95

Tracking and diversity for a mobile communications base station array antenna  

Microsoft Academic Search

A simulation model for analyzing the performance of antenna arrays in a mobile flat-fading environment is derived and applied to particular problems of tracking, combining and angle diversity. The model introduces angular coordinates that allows for the flexibility of utilizing directional co-channel interferers as well as providing the flexibility to test various array adaptation algorithms in a two dimensional mobile

Shawn P. Stapleton; Xavier Carbo; Trent McKeen

1996-01-01

96

Orbit Recovery of a Low Earth Orbiter from Gps and Ground Tracking Stations.  

National Technical Information Service (NTIS)

The use of the PRARE and GPS (Global Positioning System) microwave tracking system is compared for orbit determination of a Low Earth Orbiter (LEO). Because the upward looking GPS system allows much longer contacts times than does the downward looking PRA...

K. Aksnes D. Hoegvard S. Hauge

1989-01-01

97

NASA reports  

Microsoft Academic Search

Activities and National Aeronautics and Space Administration (NASA) programs, both ongoing and planned, are described by NASA administrative personnel from the offices of Space Science and Applications, Space Systems Development, Space Flight, Exploration, and from the Johnson Space Center. NASA's multi-year strategic plan, called Vision 21, is also discussed. It proposes to use the unique perspective of space to better

John E. Obrien; Lennard A. Fisk; Arnold A. Aldrich; Thomas E. Utsman; Michael D. Griffin; Aaron Cohen

1992-01-01

98

ISS Update: Earth Observations From Space Station  

NASA Video Gallery

NASA Public Affairs Officer Amiko Kauderer interviews Cynthia Evans, Space Station Associate Program Scientist for Earth Observations, as NASA prepares to celebrate Earth Day. Evans discusses the types of observational data that can be collected by crew members and scientific instruments aboard the space station and their uses in understanding our world. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Gerald T Wright

2012-04-20

99

Reducing antenna mechanical noise in precision spacecraft tracking  

Microsoft Academic Search

Doppler tracking of deep space probes is central to spacecraft navigation and many radio science investigations. The most sensitive Doppler observations to date were taken using the NASA\\/JPL Deep Space Network antenna DSS 25 (a 34 m diameter beam-waveguide station instrumented with simultaneous X- and Ka-band uplink and tropospheric scintillation calibration equipment) tracking the Cassini spacecraft. Those observations achieved Doppler

J. W. Armstrong; F. B. Estabrook; S. W. Asmar; L. Iess; P. Tortora

2008-01-01

100

Reducing Antenna Mechanical Noise in Precision Doppler Tracking  

Microsoft Academic Search

Precision Doppler tracking of deep-space probes is central to spacecraft naviga- tion and many radio science investigations. The most sensitive Doppler observa- tions to date have been taken using the NASA\\/JPL Deep Space Network (DSN) antenna DSS 25—a 34-m-diameter beam-waveguide station especially instrumented with simultaneous X-band (?8.4-GHz) and Ka-band (?32-GHz) links and tropo- spheric scintillation calibration equipment—tracking the Cassini spacecraft.

J. W. Armstrong; F. B. Estabrook; S. W. Asmar; L. Iess; P. Tortora

2006-01-01

101

This Week @ Nasa, November 1, 2013  

NASA Website

“Launch day approaches for NASA’s next Mars mission …” “A show of power from our Sun …” “And activity picks up on The International Space Station …Those are some of the stories trending, This Week at NASA!” Mars mission briefed - KSC During a news ...

102

AUTOMATIC FISH TRACKING SYSTEM FOR THE U.S. E.P.A.'S (ENVIRONMENTAL PROTECTION AGENCY'S) MONTICELLO ECOLOGICAL RESEARCH STATION  

EPA Science Inventory

An automatic tracking system controlled by an RCA 1802 microprocessor was developed to locate fish in a 400 m outdoor experimental stream channel at the U.S. EPA Monticello Ecological Research Station. The monitoring network consisted of 12 horizontally polarized antennas spaced ...

103

A novel simultaneous tracking and direction of arrival estimation algorithm for beam-switched base station antennas in millimeter-wave wireless broadband access networks  

Microsoft Academic Search

In this paper, a novel simultaneous tracking and direction of arrival estimation algorithm for TDD\\/TDMA broadband wireless access networks employing beam-switched base station antennas is presented. Direction of arrival estimation could be useful, for example, to generate occasional user dedicated beams to overcome temporary channel impairments or to develop advanced network management strategies such as system handover based on direction

P. Sanchis; J. M. Martinez; J. Herrera; V. Polo; J. L. Corral; J. Marti

2002-01-01

104

NASA Images  

NSDL National Science Digital Library

NASA Images was created through a partnership between NASA and the Internet Archive, a non-profit digital library based in San Francisco, to bring public access to NASA's image, video, and audio collections in a single, searchable resource. The site contains everything from classic photos to educational programming and HD video, and is growing all the time as its creators continue to gain both new and archived media from all of NASA's centers. This effort aimes to promote education and facilitate scholarship in math and the sciences at all levels, and to build general interest and excitement around space exploration, aeronautics, and astronomy.

2009-01-01

105

NASA Academies  

NASA Website

[Students Higher Education] [Available: Nationally & Internationally] The NASA Academy is an intensive ten-week leadership development project for highly motivated and successful undergraduate and graduate students.

106

NASA Now Minute: The Mechanics of Solar Panels  

NASA Video Gallery

Solar energy is the primary source of power for today's NASA missions. In this NASA Now, Jeremiah McNatt, electrical engineer at NASA's Glenn Research Center, will demonstrate how solar cells are made and used on the International Space Station. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-02-09

107

Environmental Radiation Measurements on the Mir Space Station, Program 1 Program 2.  

National Technical Information Service (NTIS)

As part of the NASA/Mir Phase 1B Science Program, the ionizing radiation environment inside and outside the Russian Mir's Space Station was monitored using a combination of Thermoluminescent Detectors (TLD) and CR-39 Plastic Nuclear Track Detectors (PNTD)...

E. V. Benton A. L. Frank E. R. Benton

1998-01-01

108

NASA Education  

NSDL National Science Digital Library

Educators and students can find a variety of materials designed for support in the areas of science, mathematics, and technology on the NASA Education website. Resources are available on NASA education programs including specific areas for kids, students and educators in the elementary, secondary, higher and informal education arenas.

Canright, Shelley

2011-06-30

109

Integration of communications and tracking data processing simulation for space station  

NASA Astrophysics Data System (ADS)

A simplified model of the communications network for the Communications and Tracking Data Processing System (CTDP) was developed. It was simulated by use of programs running on several on-site computers. These programs communicate with one another by means of both local area networks and direct serial connections. The domain of the model and its simulation is from Orbital Replaceable Unit (ORU) interface to Data Management Systems (DMS). The simulation was designed to allow status queries from remote entities across the DMS networks to be propagated through the model to several simulated ORU's. The ORU response is then propagated back to the remote entity which originated the request. Response times at the various levels were investigated in a multi-tasking, multi-user operating system environment. Results indicate that the effective bandwidth of the system may be too low to support expected data volume requirements under conventional operating systems. Instead, some form of embedded process control program may be required on the node computers.

Lacovara, Robert C.

1987-06-01

110

Evaluation of Kapton pyrolysis, arc tracking, and flashover on SiO(x)-coated polyimide insulated samples of flat flexible current carriers for Space Station Freedom  

NASA Astrophysics Data System (ADS)

Kapton polyimide wiring insulation was found to be vulnerable to pyrolization, arc tracking, and flashover when momentary short-circuit arcs have occurred on aircraft power systems. Short-circuit arcs between wire pairs can pyrolize the polyimide resulting in a conductive char between conductors that may sustain the arc (arc tracking). Furthermore, the arc tracking may spread (flashover) to other wire pairs within a wire bundle. Polyimide Kapton will also be used as the insulating material for the flexible current carrier (FCC) of Space Station Freedom (SSF). The FCC, with conductors in a planar type geometric layout as opposed to bundles, is known to sustain arc tracking at proposed SSF power levels. Tests were conducted in a vacuum bell jar that was designed to conduct polyimide pyrolysis, arc tracking, and flashover studies on samples of SSF's FCC. Test results will be reported concerning the minimal power level needed to sustain arc tracking and the FCC susceptibility to flashover. Results of the FCC arc tracking tests indicate that only 22 volt amps were necessary to sustain arc tracking (proposed SSF power level is 400 watts). FCC flashover studies indicate that the flashover event is highly unlikely.

Stueber, Thomas J.; Mundson, Chris

1993-04-01

111

Modernization of the first-generation Intercosmos laser rangefinder at the Zvenigorod experimental satellite-tracking station of the Astronomical Council of the USSR Academy of Sciences  

NASA Astrophysics Data System (ADS)

Test results obtained during 1980-1981 at the Zvenigorod station are presented for the Intercosmos laser rangefinder which was modified in various ways: e.g., optical components of the laser were replaced, and the mechanical Q-switch of the laser resonator was replaced by a phototropic Q-switch. Improved reliability was noted, and the ranging accuracy was increased by 1.5-2 times. It is concluded that the Zvenigorod tests indicate that the first-generation Intercosmos laser rangefinder can be effectively modernized at other Intercosmos tracking stations.

Matveev, D. T.; Chepurnov, B. D.

112

ISS Update: Becoming an International Space Station Program Scientist  

NASA Video Gallery

NASA Public Affairs Officer Dan Huot interviews Tara Ruttley, Associate International Space Station Program Scientist, about her educational path and her career activities at NASA. She also discusses her experience as a NEEMO (NASA Extreme Environment Mission Operations) crew member. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Mark Garcia

2012-02-23

113

Integration of a tracking laser range camera with the photogrammetry-based space vision system  

Microsoft Academic Search

This paper presents the most up-to-date experimental results obtained during the integration of a 3D Laser Scanner Tracking System and the current Space Vision System used by NASA. Half scale models of modules of the Space Station Freedom have been built for this demonstration and comparison between the current method using video cameras and the Laser Scanner System are presented.

Francois Blais; J.-Angelo Beraldin; Luc Cournoyer; I. Christie; R. Serafini; K. Mason; S. McCarthy; C. Goodall

2000-01-01

114

NASA Mission: The Universe.  

National Technical Information Service (NTIS)

This booklet is mainly a recruitment tool for the various NASA Centers. This well illustrated booklet briefly describes NASA's mission and career opportunities on the NASA team. NASA field installations and their missions are briefly noted. NASA's four ch...

1990-01-01

115

ISS Update: ISS Flight Director Royce Renfrew Talks Station "Stuff"  

NASA Video Gallery

NASA Public Affairs Officer Amiko Kauderer interviews Space Station Flight Director Royce Renfrew, who talks about ISS crew activities, Robonaut, ATV-3 cargo and other "stuff." Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

John Kossum

2012-03-20

116

NASA: Kids  

NSDL National Science Digital Library

Through this NASA website, kids will enjoy learning about astronomy through fun games, articles, and activities. Through online storybooks, users can learn about ancient sundials and our sun. The website offers matching games, a short video about Earth's daily cycle, and crossword puzzles. Students can learn how to make sundials, models of planets, solar oven, and many other space science-related tools and phenomena. The website furnishes links to kids' websites for many of NASA's missions, where users can find numerous additional activities, interesting stories, and fun facts.

117

NASA-OAST photovoltaic energy conversion program  

NASA Astrophysics Data System (ADS)

The NASA program in photovoltaic energy conversion research is discussed. Solar cells, solar arrays, gallium arsenides, space station and spacecraft power supplies, and state of the art devices are discussed.

Mullin, J. P.; Loria, J. C.

118

ISS Update: Computer Upgrade on Station  

NASA Video Gallery

NASA Public Affairs Officer Brandi Dean interviews Gary Cox, EPIC Project Manager, about EPIC (Enhanced Processor and Integrated Communications), the computer upgrade program for the International Space Station. EPIC will increase the orbital laboratory's scientific output as well enable it to communicate with future commercial spacecraft. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Mark Garcia

2012-03-01

119

NASA Antenna Gets its Bearings  

NASA Video Gallery

The historic "Mars antenna" at NASA's Deep Space Network site in Goldstone, Calif. has finished a major, delicate surgery that lasted seven months. The operation on the giant, 70-meter-wide (230-foot) antenna replaced the hydrostatic bearing assembly, which enables the antenna to rotate horizontally, and the elevation bearings, which enable the antenna to track up and down from the horizon.

Luis Espinoza

2010-11-01

120

ISS Update: Station Command and Data Handling System  

NASA Video Gallery

NASA Public Affairs Officer Kylie Clem interviews ODIN flight controller Amy Brezinski, who monitors and commands the Command and Data Handling System for the International Space Station. Brezinski is responsible for monitoring over 48 computers on the station that control the station and all its systems. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Gerald T Wright

2012-04-26

121

ISS Update: SpaceX Dragon Carrying Station Science  

NASA Video Gallery

NASA Public Affairs Officer Amiko Kauderer interviews Camille Alleyene, International Space Station Assistant Program Scientist about the science flying to the station and returning to Earth aboard the SpaceX Dragon commercial cargo craft. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Gerald T Wright

2012-05-16

122

NASA Library  

NSDL National Science Digital Library

NASA's Headquarters Library is perfect for anyone doing research or for those would like to find scholarly articles, journals, books, maps, databases, videos, people, websites, or audio files in the fields of Aerospace or Space Science. With dozens of topics to choose from, the user can quickly and easily browse or search for a scholarly journal or article. The site provides the data sorted by area of interest or topic and the lists of the articles and journals are also followed by their respective citation in proper format. Since it is a library, users can request the aid of a librarian to find exactly what he or she is looking for. The site includes links to other similar sites.

2006-11-15

123

NASA Oceanography  

NSDL National Science Digital Library

The NASA Oceanography site contains remotely sensed satellite data and modeling techniques to enable the global mapping of seasonal changes in ocean surface topography, currents, waves, winds, phytoplankton content, sea-ice extent, rainfall, sunlight reaching the sea, and sea surface temperature. Studying these patterns at a global scale help forecast and mitigate the disastrous effects of floods and drought. Images generated by ocean observing satellite missions tell us volumes about the most fundamental climate changes. Many of the data resources provide data that tell us about: Ocean surface Topography or Wave Height, Sea Surface Temperature, Ocean Surface Winds, Ocean Currents, Ocean Color, and Sea Surface Salinity. The missions profiled include the Tropical Rainfall Measuring Mission (TRMM); the Salinity Sea Ice Working Group; and sea surface winds, ocean color, and ocean surface topography/wave height missions.

124

NASA Mission: The Universe  

NASA Astrophysics Data System (ADS)

This booklet is mainly a recruitment tool for the various NASA Centers. This well illustrated booklet briefly describes NASA's mission and career opportunities on the NASA team. NASA field installations and their missions are briefly noted. NASA's four chief program offices are briefly described. They are: (1) Aeronautics, Exploration, and Space Technology; (2) Space Flight; (3) Space Operations; and (4) Space Science and Applications.

125

Stokes examines NASA program management  

NASA Astrophysics Data System (ADS)

As NASA gears up for another attempt at redesigning Space Station Freedom, some in Congress are wondering whether the space agency has learned any lessons from a number of costly past mistakes. Louis Stokes (D-Ohio), the new chairman of the House Appropriations Veterans Affairs, Housing and Urban Development, and Independent Agencies Subcommittee, held a hearing on March 17 to examine unanticipated cost growth in a variety of projects, including the space toilet, the advanced turbo pump for the shuttle, and the Mars Observer, as well as the space station. Stokes seemed well-suited to this oversight role, asking well-informed and probing questions rather than accusatory ones. The witnesses, NASA head Daniel Goldin and many of his top managers (most of whom were not in their present positions when the projects were initiated), analyzed past errors and offered useful measures for avoiding similar problems in the future.

Leath, Audrey T.

126

High-Efficiency Envelope-Tracking W-CDMA Base-Station Amplifier Using GaN HFETs  

Microsoft Academic Search

A high-efficiency wideband code-division multiple-access (W-CDMA) base-station amplifier is presented using high-performance GaN heterostructure field-effect transistors to achieve high gain and efficiency with good linearity. For high efficiency, class J\\/E operation was employed, which can attain up to 80% efficiency over a wide range of input powers and power supply voltages. For nonconstant envelope input, the average efficiency is further

Donald F. Kimball; Jinho Jeong; Chin Hsia; Paul Draxler; Sandro Lanfranco; W. Nagy; K. Linthicum; L. E. Larson; P. M. Asbeck

2006-01-01

127

NASA - NASA eClips™: Contrails  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

128

NASA Tests Rocket Engine for Commercial Vehicle  

NASA Video Gallery

NASA's John C. Stennis Space Center in Mississippi conducted a successful test firing Wednesday of the liquid-fuel AJ26 engine that will power the first stage of Orbital Sciences Corp.'s Taurus II space launch vehicle. Orbital and its engine supplier, Aerojet, test-fired the engine on Stennis' E-1 test stand. The test directly supports NASA's partnerships to enable commercial cargo flights to the International Space Station.

Jim Wilson

2010-11-10

129

New Crew Docks With Space Station  

NASA Video Gallery

The Soyuz TMA-22 spacecraft carrying NASA astronaut Dan Burbank and Russian cosmonauts Anton Shkaplerov and Anatoly Ivanishin docked to the International Space Station’s Poisk mini-research module at 12:24 a.m. EST Wednesday.

Gerald T Wright

2011-11-15

130

Development of the Acoustic Design of NASA Glenn Research Center's New Reverberant Acoustic Test Facility.  

National Technical Information Service (NTIS)

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is leading the design and build of the new world-class vibroacoustic test capabilities at the NASA GRC's Plum Brook Station in Sandusky, Ohio, USA. Benham Companies, LLC ...

A. D. Hozman A. M. McNelis M. E. McNelis W. O. Hughes

2011-01-01

131

Students Speak With Station Capcom  

NASA Video Gallery

From NASA's International Space Station Mission Control Center, ISS capcom Hal Getzelman participates in a Digital Learning Network (DLN) event with students at Colvin Run Elementary School in Vienna, Va. The DLN connects students and teachers with NASA experts and education specialists using online communication technologies like video/web conferencing and webcasting. Register for free, interactive events listed in the catalog or watch the webcasts. http://dln.nasa.gov

Gerald T Wright

2013-06-06

132

Space Station Live: ISS CREAM  

NASA Video Gallery

NASA Public Affairs Officer Lori Meggs talks with CREAM (Cosmic Ray Energetics and Mass) Principal Investigator Eun-Suk Seo to learn more about this experiment that will study cosmic ray physics from the International Space Station.

Mark Garcia

2013-05-28

133

Introduction to Space Station Freedom.  

National Technical Information Service (NTIS)

NASA field centers and contractors are organized to develop 'work packages' for Space Station Freedom. Marshall Space Flight Center and Boeing are building the U.S. laboratory and habitation modules, nodes, and environmental control and life support syste...

R. Kohrs

1992-01-01

134

Go Behind the Scenes of Space Station Science  

NASA Website

NASA will host a one-day event for 30 social media followers on May 22, 2013, at NASA’s Johnson Space Center in Houston, home of Mission Control. The NASA Social will give guests an opportunity to learn more about the International Space Station, the ...

135

today@nasa.gov  

NSDL National Science Digital Library

Today@nasa.gov, contains the latest information and news releases from NASA missions. Visitors can also find out information about NASA's four strategic enterprises: Aeronautics, Human Exploration and Development of Space, Mission to Planet Earth, and Space Science. NASA related sites describe current happenings at NASA and also provide homepages of NASA missions including the Cassini space probe, the Mars Global Surveyor and, most recently, the launch of the Columbia space shuttle. Space exploration provides clues to how the solar system was formed, why life exists on earth and not on other known planets, and what the structures of the universe, matter, and energy are.

1998-01-01

136

78 FR 31977 - NASA Asteroid Initiative Call for Ideas  

Federal Register 2010, 2011, 2012, 2013

...entrance of the NASA building near the corner of E St. SW. and 4th St. SW. From the exit of the Federal Center SW metro station, head south on 3rd St. SW and then west on E St. SW. to arrive at the west entrance of the NASA building near...

2013-05-28

137

ISS Update: Astronaut T.J. Creamer Continues Station Support at Marshall  

NASA Video Gallery

Media Specialist Lori Meggs talks with astronaut T.J. Creamer about his new role as a Payload Operations Director at NASA's Marshall Space Flight Center in Huntsville, Ala. Questions? Ask us on Twitter @NASA_Johnson and include the hashtag #askStation. For the latest news about the space station, visit http://www.nasa.gov/station.

Gerald T Wright

2012-03-28

138

NASA's Educational Programs.  

National Technical Information Service (NTIS)

The educational programs of NASA's Educational Affairs Division are examined. The problem of declining numbers of science and engineering students is reviewed. The various NASA educational programs are described, including programs at the elementary and s...

R. W. Brown

1990-01-01

139

NASA Google+ Hangouts  

NASA Website

Hangout with NASA on Google+ to get a unique perspective on America's space agency. Get the latest updates on NASA missions to pioneer the future in space exploration, scientific discovery and aeronautics research.

140

Selling to NASA.  

National Technical Information Service (NTIS)

The prospective NASA contractor is provided with information that describes the agency and its procurement practices. Products include ideas, manufacturing capabilities, fabricated components, construction, basic materials, and specialized services. NASA ...

1981-01-01

141

NASA International Environmental Partnerships.  

National Technical Information Service (NTIS)

For nearly five decades, the National Aeronautics and Space Administration (NASA) has been preeminent in space exploration. NASA has landed Americans on the moon, robotic rovers on Mars, and led cooperative scientific endeavors among nations aboard the In...

P. Lewis S. Valek

2010-01-01

142

NASA Now Minute: Extremophiles  

NASA Video Gallery

NASA research scientists Dr. Margarita Marinova and Dr. Alfonso Davila discuss how scientists study microbes that live in Earth's extreme environments to better understand places where life might exist in our solar system, such as Mars! NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Sandra May

2011-04-08

143

Status of frequency and time support for NASA systems  

NASA Astrophysics Data System (ADS)

NASA has frequency and timing systems at many facilities and centers. Timing systems with specifications tighter than several microseconds are covered. These ground based systems support scientific experiments and spacecraft tracking for the following programs; NASA Satellite Laser Ranging (NSLR); Network Mission Operations Support (NMOS); Kennedy Space Center (KSC); Very Long Baseline Interferometry (VLBI); Tracking Data Relay Satellite System (TDRSS) Ground Terminal Network; and the Deep Space Network (DSN). Major equipment assemblies, specifications, performance, and requirements, both present and future, are presented.

Kuhnle, Paul F.; Kushmeider, Paul J.; Wardrip, S. Clark

1994-05-01

144

NASA wiring for space applications program  

NASA Astrophysics Data System (ADS)

An overview of the NASA Wiring for Space Applications Program and its relationship to NASA's space technology enterprise is given in viewgraph format. The mission of the space technology enterprise is to pioneer, with industry, the development and use of space technology to secure national economic competitiveness, promote industrial growth, and to support space missions. The objectives of the NASA Wiring for Space Applications Program is to improve the safety, performance, and reliability of wiring systems for space applications and to develop improved wiring technologies for NASA flight programs and commercial applications. Wiring system failures in space and commercial applications have shown the need for arc track resistant wiring constructions. A matrix of tests performed versus wiring constructions is presented. Preliminary data indicate the performance of the Tensolite and Filotex hybrid constructions are the best of the various candidates.

Schulze, Norman

1995-11-01

145

NASA - Aeronautical Oddities  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

146

NASA - BioBLAST  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

147

NASA Thesaurus Supplement.  

National Technical Information Service (NTIS)

The NASA Thesaurus Supplement is a cumulative update to the 1998 edition of the NASA Thesaurus (NASA/SP-1998-7501). The Supplement, published every six months, includes all new terms and associated hierarchies added since the cutoff for the 1998 edition (...

1999-01-01

148

NASA - America's Wings  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

149

America in Space, the First Decade - Space Physics and Astronomy, Man in Space, Exploring the Moon and Planets, Putting Satellites to Work, NASA Spacecraft, Spacecraft Tracking, Linking Man and Spacecraft.  

ERIC Educational Resources Information Center

Included are seven booklets, part of a series published on the occasion of the tenth anniversary of the National Aeronautics and Space Administration (NASA). The publications are intended as overviews of some important activities, programs, and events of NASA. They are written for the layman and cover several science disciplines. Each booklet…

Corliss, William R.; Anderton, David A.

150

Station Crew Celebrates Christmas  

NASA Video Gallery

Aboard the orbiting International Space Station, Expedition 34 Commander Kevin Ford, Russian Flight Engineers Oleg Novitskiy, Evgeny Tarelkin and Roman Romanenko, NASA Flight Engineer Tom Marshburn and Canadian Space Agency Chris Hadfield celebrated Christmas on the orbital laboratory Dec. 25, 2012 through song and downlink messages of cheer for flight controllers on the ground.

Gerald T Wright

2012-12-26

151

$425 million for space station  

Microsoft Academic Search

The Space Station will funded at only about half of the $767 million requested in the 1988 budget for the National Aeronautics and Space Administration (NASA), and overall the agency will receive $8,856 billion for the current fiscal year (FY) in the deficit-reduction package passed by Congress in late December. Despite an earlier complaint that reductions in the space station

William Ward Maggs

1988-01-01

152

NASA Tracks Global Spread of Wildfire Pollution  

NASA Video Gallery

This animation focuses on the Russian fires, highlighting the global transport of the pollution across the Northern Hemisphere, as seen from above the North Pole. The highest concentrations of carbon monoxide are shown in yellows and reds.

Luis Espinoza

2010-08-11

153

Photonic Component Qualification and Implementation Activities at NASA Goddard Space Flight Center  

Microsoft Academic Search

The photonics group in Code 562 at NASA Goddard Space Flight Center supports a variety of space flight programs at NASA including the: International Space Station (ISS), Shuttle Return to Flight Mission, Lunar Reconnaissance Orbiter (LRO), Express Logistics Carrier (ELC), and the NASA Electronic Parts and Packaging Program (NEPP). Through research, development, and testing of the photonic systems to support

Melanie N. Ott; Xiaodan Linda Jin; Richard F. Chuska; Frank V. LaRocca; Shawn L. Macmurphyc; Adam J. Matuszeski; Ronald S. Zellar; Patricia R. Friedberg; Mary C. Malenab

154

Photonic component qualification and implementation activities at NASA Goddard Space Flight Center  

Microsoft Academic Search

The photonics group in Code 562 at NASA Goddard Space Flight Center supports a variety of space flight programs at NASA including the: International Space Station (ISS), Shuttle Return to Flight Mission, Lunar Reconnaissance Orbiter (LRO), Express Logistics Carrier (ELC), and the NASA Electronic Parts and Packaging Program (NEPP). Through research, development, and testing of the photonic systems to support

Melanie N. Ott; Xiaodan Linda Jin; Richard F. Chuska; Frank V. LaRocca; Shawn L. Macmurphy; Adam J. Matuszeski; Ronald S. Zellar; Patricia R. Friedberg; Mary C. Malenab

2006-01-01

155

Lunar Colonization and NASA’s Exploration Changes  

Microsoft Academic Search

Space colonization is not part of NASA’s mission planning. NASA’s exploration vision, mission goals and program implementations, however, can have an important affect on private lunar programs leading towards colonization. NASA’s exploration program has been described as a journey not a race. It is not like the Apollo mission having tight schedules and relatively unchanging direction. NASA of this era

Raymond B. Gavert

2006-01-01

156

This Week @ NASA - 10/25/10  

NASA Video Gallery

The six-member crew of STS-133 now has an official launch date of Nov. 1 for space shuttle Discovery's final flight. The 11-day mission to the International Space Station is scheduled to begin that afternoon at 4:40 pm ET at NASA's Kennedy Space Center. Also, NASA scientists find a plethora of useful minerals in lunar soil. Plus, the White House Science Fair, go mobile with Gowalla, Webb passes an important test, aviation unleashed at Langley, and "Mythbusters" visits Glenn.

shanger

2010-10-26

157

NASA Science For Educators  

NSDL National Science Digital Library

NASA's Science Education Program creates products using NASA's results in Earth Science, Heliophysics, Planetary Science, and Astrophysics research. The program sponsors educational activities at all levels of formal and informal education to provide opportunities for learners to investigate their world and their universe using unique NASA resources. There are links to a number of related education projects and workshops, and a solar system ambassadors program.

158

NASA planetary programs  

Microsoft Academic Search

Money to start work on the Venus Orbital Imaging Radar (Voir) mission and the Halley's comet\\/Tempel 2 project was deleted from NASA's 1981 budget, but according to NASA planners, the agency could still execute those missions with minimum delay through the use of alternative strategies.This year's version of the long-range plans that are drawn up annually by NASA divisions, and

Lee Greathouse

1980-01-01

159

"NASA's Ready, Let's Go"  

NASA Video Gallery

What's it like to be a NASA engineer who's tackling the challenge of improving air traffic flow across the United States? NASA's Todd Farley shows us that dedication and teamwork are just as necessary for improving life every day on Earth as much as they are for exploring space. › See Typical 24 Hours of U.S. Air Traffic › See Other 'Faces of NASA' Videos

Christopher O

2013-03-07

160

NASA: Our Solar System  

NSDL National Science Digital Library

Part of the Popular Topics section of the main NASA site, this collection of NASA resources is jam-packed with great photos, learning tools, announcements, and NASA agency news. Anyone interested in learning more about the solar system or the United States' efforts in space exploration (both manned and unmanned) will want to check out this great resource. In addition to the features on the main page, be sure to check out the Archives section for even more.

161

Science @NASA Headline News  

NSDL National Science Digital Library

This repository of journal articles is the combined effort of the Science@NASA team and the Science Mission Directorate at NASA headquarters. The articles cover a broad range of NASA discoveries and develop "citizen science" opportunities for readers, while still producing old favorites such as Apollo Chronicles and "looking up" stories about backyard astronomy events.These articles are dated from 1996 to present and can be accessed via keyword search.

162

NASA Thesaurus: Volume 1  

NSDL National Science Digital Library

The NASA Scientific and Technical Information (STI) Program plays a key role in keeping NASA a leader in aeronautical and space sciences. The STI maintains NASA's database of aeronautical and space science information while also reporting on the Agency's research and development. This impressive thesaurus contains a hierarchical listing of all authorized terms contained in NASA's STI database, along with definitions. Although the large size of this PDF file might make navigation difficult, the document is an extremely valuable reference tool for librarians and students of aeronautics and space science.

163

$425 million for space station  

NASA Astrophysics Data System (ADS)

The Space Station will funded at only about half of the $767 million requested in the 1988 budget for the National Aeronautics and Space Administration (NASA), and overall the agency will receive $8,856 billion for the current fiscal year (FY) in the deficit-reduction package passed by Congress in late December. Despite an earlier complaint that reductions in the space station budget would kill the program and an apparent lack of support from the White House, NASA's official reaction was full of good cheer.NASA will be able to use the $425 million in two installments, $200 million now and $225 million in June. In October, NASA administrator James Fletcher stated in a letter to Senator Jake Garn (R-Utah) that if the space station received no more than $440 million, he would “recommend termination” of the program. But after the budget was approved, NASA said that the $425 million “reflected the strong commitment of the President and the Congress to proceed with the development of a space station.” A recent request to President Reagan from congressional proponents of the station for a letter of support for the multibillion dollar project was declined.

Maggs, William Ward

164

Identifying Communities of Vulnerability: Using NASA's Multiangle Imaging Spectroradiometer to Enhance Public Health Tracking of Particle Exposure in Los Angeles - An Empirical Approach to Examining L1 MISR Radiance Measurements and PM2.5 Relationships  

NASA Astrophysics Data System (ADS)

Los Angeles is consistently ranked as one of the most polluted cities in the United States, exhibiting high levels of both ozone and particulate matter. Particulate matter with an aerodynamic diameter of 2.5 microns or less, or PM2.5, is of special concern for health professionals, since it is fine enough to be inhaled into the lungs. Additionally, studies show that it is associated with respiratory disease risks such as asthma. Remote sensing technologies have the potential to be useful in air pollution health studies, but have so far been sparsely implemented. Satellite-derived measurements would be especially useful in air pollution studies, since the concentrations of interest can change by orders of magnitude over small distances. However, with current remote sensing technologies, it is difficult to predict pollution levels within small areas. This study utilizes remote sensing information in combination with a ground-based network of data to create a more comprehensive approach to tracking public health concerns. According to the 2007 NRC Decadal Survey, there is a continued need for research that establishes the relationship between remotely sensed data and predicting public health risks related to environmental factors. For this study, we conducted linear regression models using Multi-Angle Imaging SpectroRadiometer (MISR) L1 radiance data and ground-based PM2.5 measurements from 13 EPA stations within the Los Angeles Metropolitan Statistical Area. MISR senses in 4 bands (visible blue, green, red and near infrared) and 9 separate angles, producing a total of 36 bands. Using all 36 bands, we generated models for each station individually and for all stations combined. Two time periods were assessed: June, July and August from 2000 - 2009, and all months from 2009. Summer months were looked at specifically, since pollution levels tend to be higher than other parts of the year due to strong inversion layers and low rainfall levels. Generally, the models performed well, suggesting that MISR radiances are able to accurately predict levels of PM2.5. For 2009 data, all models had R-squared values over 0.93. For summer month data, the model R-square values were markedly lower and more varied than for the 2009 data, ranging from 0.33 - 0.92. When looking at the 2009 data, non-summer month models performed better than did summer-month models. A brief analysis of temperature data indicates that temperature and deviation from the norm are not associated with model predictability. All 36 MISR channels were plotted against their weights for each model, but no band combination obviously weighed more than other bands. Further research needs to be conducted to understand why models were able to predict 2009 PM2.5 levels, but were unable to accurately fit summer data from 2000 - 2009.

Laygo, K.; Kontgis, C.; Hollins, A.

2011-12-01

165

The SMA automated station for meteor research  

NASA Astrophysics Data System (ADS)

In this paper, we summarize the presented poster regarding the active meteor tracking method and investigation of the SMA since 2006, with a specially devised automated station. We also discuss our collaboration with other tracking stations belonging to the Spanish Meteor and Fireball Network (SPMN), as well as with the Bootes 2 Station (owned by IAA-CSIC, Spain).

Troughton, Blanca; Aznar, Juan Carlos; Padilla, Rafael; Toval, Julia; Serrano Castellon, Alberto

2013-01-01

166

Discussion of the design of satellite-laser measurement stations in the eastern Mediterranean under the geological aspect. Contribution to the earthquake prediction research by the Wegener Group and to NASA's Crustal Dynamics Project  

NASA Astrophysics Data System (ADS)

Research conducted for determining the location of stations for measuring crustal dynamics and predicting earthquakes is discussed. Procedural aspects, the extraregional kinematic tendencies, and regional tectonic deformation mechanisms are described.

Paluska, A.; Pavoni, N.

1983-11-01

167

NASA Now Minute: Model Aircraft  

NASA Video Gallery

In this episode of NASA Now, Sam James discusses why NASA engineers build model aircraft as well as the materials and steps involved in the building process. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2012-05-29

168

NASA and SEEP  

Microsoft Academic Search

In the recent news note by R. E. Hartle entitled `Detecting Electron Precipitation' (Eos, March 22, 1983, p. 114), it is staled that NASA performed an experiment `similar' to the Navy's Stimulated Emission of Energetic Particles (SEEP) satellite program using sounding rocket X ray detectors. The NASA effort was actually a cooperative part of the SEEP program that was, with

John T. Lynch

1983-01-01

169

NASA Facts, Voyager.  

ERIC Educational Resources Information Center

|This document is one of a series of publications of the National Aeronautics and Space Administration (NASA) on facts about the exploration of Jupiter and Saturn. This NASA mission consists of two unmanned Voyager spacecrafts launched in August and September of 1977, and due to arrive at Jupiter in 1979. An account of the scientific equipment…

National Aeronautics and Space Administration, Washington, DC. Educational Programs Div.

170

NASA's Getaway Special.  

ERIC Educational Resources Information Center

The "Getaway Special" is NASA's semiofficial program for low-budget researchers, who can arrange bookings for their own space experiments on regular flights of the space shuttle. Information about arranging for NASA to take individual experiment packages is presented. (LBH)

Randal, Judith

1978-01-01

171

Nasa Thesaurus Aeronautics Vocabulary.  

National Technical Information Service (NTIS)

The controlled vocabulary used by the NASA Scientific and Technical Information effort to index documents in the area of aeronautics is presented. The terms comprise a subset of the 1988 edition of the NASA Thesaurus and its supplements issued through the...

1991-01-01

172

The NASA Astrobiology Roadmap  

Microsoft Academic Search

The NASA Astrobiology Roadmap provides guidance for research and technology development across the NASA enterprises that encompass the space, Earth, and biological sciences. The ongoing development of astrobiology roadmaps embodies the contributions of diverse scientists and technologists from government, universities, and private institutions. The Roadmap addresses three basic questions: How does life begin and evolve, does life exist elsewhere in

David J. Des Marais; Louis J. Allamandola; Steven A. Benner; Alan P. Boss; David Deamer; Paul G. Falkowski; Jack D. Farmer; S. Blair Hedges; Bruce M. Jakosky; Andrew H. Knoll; David R. Liskowsky; Victoria S. Meadows; Michael A. Meyer; Carl B. Pilcher; Kenneth H. Nealson; Alfred M. Spormann; Jonathan D. Trent; William W. Turner; Neville J. Woolf; Harold W. Yorke

2003-01-01

173

The NASA Astrobiology Roadmap  

Microsoft Academic Search

The NASA Astrobiology Roadmap provides guidance for research and technology development across the NASA enterprises that encompass the space, Earth, and biological sciences. The ongoing development of astrobiology roadmaps embodies the contributions of diverse scientists and technologists from government, universities, and private institutions. The Roadmap addresses three basic questions: how does life begin and evolve, does life exist elsewhere in

David J. Des Marais; Joseph A. Nuth III; Louis J. Allamandola; Alan P. Boss; Jack D. Farmer; Tori M. Hoehler; Bruce M. Jakosky; Victoria S. Meadows; Andrew Pohorille; Bruce Runnegar; Alfred M. Spormann

2008-01-01

174

NASA'S Mars Exploration Homepage  

NSDL National Science Digital Library

This extensive site from NASA hosts a collection of science and news articles, images and animations, and resources for teachers and students. Information about various Martian missions and observational technologies are included as well as links to other NASA sites that relate to Mars.

Nasa

175

NASA NR Hydrogen Maser  

Microsoft Academic Search

The Johns Hopkins University, Applied Physics Laboratory, under contract to NASA\\/Goddard Space Flight Center, is engineering a new generation of field operable hydrogen masers (NR) based on prior NASA NP and NX designs. These units incorporate improvements in magnetic shielding, lower noise electronics, better thermal control and have a microprocessor for operation, monitoring and diagnostic functions. They are ruggedly built

L. J. Rueger; A. Bates; L. Stillman; J. Norton; C. M. Blackburn; V. A. Reinhardt

1978-01-01

176

The NASA astrobiology program.  

PubMed

The new discipline of astrobiology addresses fundamental questions about life in the universe: "Where did we come from?" "Are we alone in the universe?" "What is our future beyond the Earth?" Developing capabilities in biotechnology, informatics, and space exploration provide new tools to address these old questions. The U.S. National Aeronautics and Space Administration (NASA) has encouraged this new discipline by organizing workshops and technical meetings, establishing a NASA Astrobiology Institute, providing research funds to individual investigators, ensuring that astrobiology goals are incorporated in NASA flight missions, and initiating a program of public outreach and education. Much of the initial effort by NASA and the research community was focused on determining the technical content of astrobiology. This paper discusses the initial answer to the question "What is astrobiology?" as described in the NASA Astrobiology Roadmap. PMID:12448992

Morrison, D

2001-01-01

177

NASA and General Aviation. NASA SP-485.  

ERIC Educational Resources Information Center

A detailed examination of the nature and function of general aviation and a discussion of how the National Aeronautics and Space Administration (NASA) helps keep it on the cutting edge of technology are offered in this publication. The intricacies of aerodynamics, energy, and safety as well as the achievements in aeronautical experimentation are…

Ethell, Jeffrey L.

178

NASA and General Aviation. NASA SP-485.  

ERIC Educational Resources Information Center

|A detailed examination of the nature and function of general aviation and a discussion of how the National Aeronautics and Space Administration (NASA) helps keep it on the cutting edge of technology are offered in this publication. The intricacies of aerodynamics, energy, and safety as well as the achievements in aeronautical experimentation are…

Ethell, Jeffrey L.

179

Go Behind the Scenes of the International Space Station  

NASA Website

NASA will host an event for 30 social media followers on March 19, 2013 at NASA's Johnson Space Center in Houston. Home of Mission Control, the NASA Social event will give guests an opportunity to learn more about the International Space Station, ...

180

International Space Station Propulsion Module Procurement Process.  

National Technical Information Service (NTIS)

The National Aeronautics and Space Administration (NASA) initiated the Space Station Program in 1984 to provide for a permanent human presence in an orbiting laboratory. The original U.S. design included a propulsion module that could adjust the orientati...

2001-01-01

181

Expedition 25 Crew Members Launch to Station  

NASA Video Gallery

NASA astronaut Scott Kelly and Russian cosmonauts Oleg Skripochka and Alexander Kaleri launched in their Soyuz TMA-01M spacecraft from the Baikonur Cosmodrome in Kazakhstan beginning a two-day journey to the International Space Station.

Russell Todd D

2010-10-07

182

Management dynamics of NASA's human spaceflight programs  

Microsoft Academic Search

The public management dynamics of human spaceflight at NASA in the post-Apollo era—Space Shuttle, International Space Station, and the United States national vision for space exploration—are examined. A number of variables are applied to assess this. Public management processes are identified as a function of political accountability, organizational decision-making and cultures, and technical aspects directed at high reliability and safety

Eligar Sadeh

2006-01-01

183

Radiation protection considerations in space station missions  

Microsoft Academic Search

The National Aeronautics and Space Administration (NASA) is currently studying the degree to which the baseline design of space station Freedom (SSF) would permit its evolution to a transportation node for lunar or Mars expeditions. To accomplish NASA's more ambitious exploration goals, nuclear-powered vehicles could be used in SSF's vicinity. This enhanced radiation environment around SSF could necessitate additional crew

K. L. Peddicord; W. E. Bolch

1991-01-01

184

Astrometry of Comets at USNO Flagstaff Station  

NASA Astrophysics Data System (ADS)

The optical astrometry group at the Flagstaff Station of the US Naval Observatory has, since 1994, provided astrometric positions to NASA/JPL for a series of comets that were targets of various space missions. Among these have been Shoemaker-Levy 9, Wild 2, Schwassman-Wachmann 3, and Tempel 1. All astrometry has been done with meter-class or smaller telescopes, equipped with single-chip CCD cameras. Comet positions were computed using stellar reference catalogs produced at USNO, including USNO-A1.0 (for the earliest observations), USNO-B1.0, and UCAC 1 and 2. In the course of these astrometric campaigns, it has become clear that obtaining accurate positions of comets depends on certain key factors. These include proper pixelization, a field of view large enough to emcompass a good distribution of background reference stars, a suitable reference catalog, and integrations long enough to average out seeing effects. In this report, we will discuss each of these factors and how they can be optimized. The application of what we consider ``best practices'' in tracking comet Tempel 1 for the Deep Impact mission will be presented. Support for this work has been provided by a series of NASA/JPL contracts and grants, the latest of which is NRA/AO 4ZSS001N.

Monet, A. K. B.; Stone, R. C.; Harris, H. C.; Tilleman, T.; Monet, D. G.; Levine, S. E.; Canzian, B.

2005-12-01

185

New Crewmates Welcomed Aboard Station  

NASA Video Gallery

NASA astronaut Karen Nyberg, Russian Federal Space Agency cosmonaut Fyodor Yurchikhin and European Space Agency astronaut Luca Parmitano joined their Expedition 36 crewmates when the hatches between the Soyuz TMA-09M spacecraft and the International Space Station officially opened at 12:14 a.m. EDT Wednesday. Expedition 36 Commander Pavel Vinogradov and Flight Engineer Alexander Misurkin of the Russian Federal Space Agency and Flight Engineer Chris Cassidy of NASA, who arrived at the station on March 28, welcomed the new crew members aboard their orbital home.

Gerald T Wright

2013-05-28

186

NASA Earth Observatory images  

NSDL National Science Digital Library

The purpose of NASA's Earth Observatory is to provide a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The focus is on Earth's climate and environmental change. In particular, the site may be useful to public media and educators. Earth scientists and science writers from all NASA centers, as well as all agencies and universities affiliated with NASA's Earth Science Enterprise, are encouraged to submit articles and/or images for publication on the Earth Observatory.

Administration, National A.

2010-02-16

187

Space committee weighs cost of space station redesign  

Microsoft Academic Search

NASA's Space Station Redesign Team has completed the task of reducing its spending by a total of $15 billion over the next 5 years through redesigning the Space Station. President Clinton mandated the redesign last February. The team, led by NASA Administrator Daniel Goldin, presented its study to the House space subcommittee at an over-crowded hearing on June 8. Several

Susan Bush

1993-01-01

188

NASA - Space Communications  

NASA Website

Glenn's space communications program is to work in partnership with the satellite communications industry and other government agencies to enable new capabilities that enhance the competitiveness of U.S. industry and support the needs of NASA ...

189

NASA Space Shuttle Processing.  

National Technical Information Service (NTIS)

This viewgraph presentation reviews NASA's Space Shuttle Processing at Kennedy Space Center. A demonstration of the Space Shuttle silica tiles, a description of its High Temperature Reusable Surface Insulation (HRSI), tile inspections, and tile replacemen...

L. L. Andruske

2010-01-01

190

Nasa: Biomedical Applications Team.  

National Technical Information Service (NTIS)

The status of projects involving the adaptation of NASA technologies for medical purposes is reviewed. Devices for the measurement of joint deformation of arthritic hands, the development of an artificial pancreas, provision of an auditory signal to avert...

1981-01-01

191

NASA: Higher Education  

NSDL National Science Digital Library

NASA has a significant educational outreach mission, and this site dedicated to higher education is a wonderful find. The first notable feature on the site is the Read About It area, which contains profiles such as "Beginner's Guide to Aeronautics," "Commercial Space Transportation," and a complete archive of past items. Moving on, the Current Opportunities area contains archived lectures, webcasts, and online workshops on astronomy. Another fun piece of the site is the Do-It-Yourself Podcasts area, found on the lower left. Here visitors can take NASA audio and video files and create their own podcasts on rocket science, micro-g, lab safety, and other topics. The site also contains links to NASA Television and the Have You Seen? areas, the latter of which features video highlights from NASA programs and contests.

2012-05-25

192

Road to NASA.  

National Technical Information Service (NTIS)

This slide presentation describes the career path and projects that the author worked on during her internship at NASA. As a Graduate Student Research Program (GSRP) participant the assignments that were given include: Human Mesenchymal Stem Cell Research...

V. Meyers

2010-01-01

193

NASA Radiowave Propagation Program.  

National Technical Information Service (NTIS)

The objectives of the NASA radiowave Propagation Program are to enable new satellite communication applications and to enhance existing satellite communication networks. These objectives are achieved by supporting radio wave propagation studies and dissem...

F. Davarian

1990-01-01

194

Academic science and NASA  

NASA Astrophysics Data System (ADS)

The fiscal 1984 budget of the National Aeronautics and Space Administration (NASA) contains some pleasant surprises. The new budget reflects, in some areas, a welcome change from the recent emphasis toward earth-orbiting of space missions of limited scientific content. (For the overall fiscal 1984 NASA budget, see Eos, October 4, 1983, p. 577.)The July 1983 NASA in-house study-group report titled “The Universities and NASA Space Sciences” emphasizes that the past decade's decreasing budgets have resulted in a severe lessening of university capabilities in space science. Smaller budgets have meant significantly fewer start-ups of space missions with scientific emphasis. Meanwhile, data analysis from continuing and completed missions has not been well funded.

Bell, Peter M.

195

Nasa Supported Research Programs.  

National Technical Information Service (NTIS)

A summary of the scientific NASA grants and achievements accomplished by the University of California, Los Angles, is presented. The development of planetary and space sciences as a major curriculum of the University, and statistical data on graduate prog...

W. F. Libby

1975-01-01

196

NASA's CFD Validation Program.  

National Technical Information Service (NTIS)

With computational fluid dynamics (CFD) becoming a productive research and design tool, the requirement to validate CFD codes has grown significantly. NASA had emphasized CFD validation activities since 1986 when a separate work element was formed to fund...

D. R. Satran

1989-01-01

197

NASA Technology Benefits Orthotics.  

National Technical Information Service (NTIS)

Engineers at NASA's Marshall Space Flight Center (MSFC) in Huntsville, Alabama have designed a knee brace to aid in the rehabilitation of medical patients. The device, called the Selectively Lockable Knee Brace, was designed for knee injury and stroke pat...

M. Shadoan N. Myers

1998-01-01

198

NASA's ESDS Reference Architecture  

NASA Astrophysics Data System (ADS)

Over the last few decades, advances in geophysical measurement technologies have led to an explosion in the volume and scope of Earth Science data sets. Implementation of the instrument systems that acquire these measurements requires commensurate development in data systems to enable the collection, processing, archiving and distribution of the resultant large volumes of data. As more and more of the data systems come on line, their common features have become increasingly apparent. NASA's Earth Science Data System Working Group (ESDSWG) recognizes these trends and needs and has asked its Standards Process Group (SPG) to develop a reference architecture for NASA's Earth Science Data Systems (ESDS's). That reference architecture is introduced in this presentation. The NASA ESDS Reference Architecture describes those common features and patterns, and thus provides guidelines for individuals and teams who plan to construct and interact with new NASA ESDS's.

Burnett, M.; Weiss, B.; Law, E.

2011-12-01

199

NASA - ChemSecure  

NASA Website

NASA's Dryden Flight Research Center has developed ChemSecure, a wireless, sensor-based hazardous materials management system aimed at improving management of chemicals and other hazardous materials to enhance security and safety while ...

200

NASA Planetary Visualization Tool  

Microsoft Academic Search

NASA World Wind allows one to zoom from satellite altitude into any place on Earth, leveraging the combination of high resolution LandSat imagery and SRTM elevation data to experience Earth in visually rich 3D, just as if they were really there. NASA World Wind combines LandSat 7 imagery with Shuttle Radar Topography Mission (SRTM) elevation data, for a dramatic view

P. Hogan; R. Kim

2004-01-01

201

13. VIEW FROM POTOMAC RIVER BRIDGE PLATFORM WEST TOWARDS STATION. ...  

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

13. VIEW FROM POTOMAC RIVER BRIDGE PLATFORM WEST TOWARDS STATION. HARPERS FERRY DEPOT IS ON LEFT, NORTH TRACK WAITING STATION IS ON RIGHT. - Baltimore & Ohio Railroad, Harpers Ferry Station, Potomac Street, Harpers Ferry, Jefferson County, WV

202

Testing Behind The Test Facility: The Acoustic Design of the NASA Glenn Research Center's World-Class Reverberant Acoustic Test Facility.  

National Technical Information Service (NTIS)

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is leading the design and build of the new world-class vibroacoustic test capabilities at the NASA GRC's Plum Brook Station in Sandusky, Ohio, USA. Benham Companies, LLC ...

A. D. Hozman A. M. McNelis M. E. McNelis W. O. Hughes

2011-01-01

203

NASA Solar System Exploration Website  

Microsoft Academic Search

The NASA Solar System Exploration website, http:\\/\\/solarsystem.nasa.gov, sponsored by the Science Director for Solar System Exploration, Office of Space Science, NASA, is a gateway to information about our solar system and NASA's missions and research to understand it. The site has been designed for easy navigation and is becoming known as a resource for educators, students, media, and publishers. Major

A. M. Sohus

2000-01-01

204

What Is NASA Explorer Schools?  

NASA Video Gallery

Let NASA Explorer Schools help you be the teacher who makes a difference with their students. With our unique videos, presentations, lessons, event and training, NASA Explorer Schools will help you keep your students’ curiosity alive. To learn more, please visit the NASA Explorer School website located at: › http://explorerschools.nasa.gov.

Sandra May

2011-01-11

205

Quantifying and Improving International Space Station Survivability Following Orbital Debris Penetration.  

National Technical Information Service (NTIS)

The increase of the orbital debris environment in low-earth orbit has prompted NASA to develop analytical tools for quantifying and lowering the likelihood of crew loss following orbital debris penetration of the International Space Station (ISS). NASA us...

J. Williamsen H. Evans B. Bohl S. Evans

2001-01-01

206

Satellite Tracking Threatened Species  

NSDL National Science Digital Library

The Patuxent Wildlife Research Center and NASA's Goddard Space Flight Center have combined forces to produce this Website on the use of satellite tracking to monitor migration routes of endangered birds. Targeting the general public, the site introduces readers to satellite tracking (using Direct Readout technology), offers animations of bird flight paths (see the section entitled Birdtracks), and gives additional information on birds (in the Bird Data Archives, select a bird and watch its flight path through time). While bird information is limited to several larger species (due to the size/weight of attached transmitters), the resource serves as a useful information base for anyone wishing to learn more about satellite tracking.

207

NASA Now Minute: Balloon Research  

NASA Video Gallery

In this NASA Now program, Debbie Fairbrother discusses two types of high-altitude balloons that NASA is using to test scientific instruments and spacecraft. She also talks about the Ideal Gas Law and the interaction between temperature and pressure when a balloon has constant volume. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2012-05-01

208

Space Station Freedom research capabilities  

NASA Astrophysics Data System (ADS)

NASA's plan for enhancing space-based research capabilities begins with extended-duration Space Shuttle missions that will double the research capability currently provided by Spacelab and culminate in Space Station Freedom. The 14-day USML 1 mission flown on the Space Shuttle in June 1992 was a space station precursor mission, dedicated to microgravity and life science research. Freedom will be a permanent space-based research facility, providing a working environment nearly free of buoyancy-driven convection, sedimentation, and hydrostatic pressure and featuring access to the ultra-high vacuum of space (for external payloads). In its crew-tended phase, Space Station Freedom will provide 40 times Spacelab's capability, and in its permanently occupied phase, Freedom will provide 110 times Spacelab's capability. (The Russian space station, Mir, offers 26 times Spacelab's capabilities.) According to NASA's current schedule, the first launch of a space station element will take place in November 1995, with permanently occupied capability planned for September 1999. This year, NASA will conduct space station critical design reviews (CDR's). Work package design reviews will take place from February to April 1993, followed by a systems CDR.

Moorehead, Robert

209

NASA Planetary Visualization Tool  

NASA Astrophysics Data System (ADS)

NASA World Wind allows one to zoom from satellite altitude into any place on Earth, leveraging the combination of high resolution LandSat imagery and SRTM elevation data to experience Earth in visually rich 3D, just as if they were really there. NASA World Wind combines LandSat 7 imagery with Shuttle Radar Topography Mission (SRTM) elevation data, for a dramatic view of the Earth at eye level. Users can literally fly across the world's terrain from any location in any direction. Particular focus was put into the ease of usability so people of all ages can enjoy World Wind. All one needs to control World Wind is a two button mouse. Additional guides and features can be accessed though a simplified menu. Navigation is automated with single clicks of a mouse as well as the ability to type in any location and automatically zoom to it. NASA World Wind was designed to run on recent PC hardware with the same technology used by today's 3D video games. NASA World Wind delivers the NASA Blue Marble, spectacular true-color imagery of the entire Earth at 1-kilometer-per-pixel. Using NASA World Wind, you can continue to zoom past Blue Marble resolution to seamlessly experience the extremely detailed mosaic of LandSat 7 data at an impressive 15-meters-per-pixel resolution. NASA World Wind also delivers other color bands such as the infrared spectrum. The NASA Scientific Visualization Studio at Goddard Space Flight Center (GSFC) has produced a set of visually intense animations that demonstrate a variety of subjects such as hurricane dynamics and seasonal changes across the globe. NASA World Wind takes these animations and plays them directly on the world. The NASA Moderate Resolution Imaging Spectroradiometer (MODIS) produces a set of time relevant planetary imagery that's updated every day. MODIS catalogs fires, floods, dust, smoke, storms and volcanic activity. NASA World Wind produces an easily customized view of this information and marks them directly on the globe. When one of these color coded markers are clicked, it downloads the full image and displays it in the full context of its location on Earth. MODIS images are publication quality material at resolutions up to 250-meters-per-pixel. NASA World Wind provides a full catalog of countries, capitals, counties, cities, towns, and even historical references. The names appear dynamically, increasing in number as the user zooms in. World Wind is capable of browsing through and displaying GLOBE data based on any date one wishes planetary data for. That means one can download today's (or any previous day's) temperature across the world, or rainfall, barometric pressure, cloud cover, or even the GLOBE students' global distribution of collected data. This program is free and available for further development via the NASA Open Source Agreement guidelines.

Hogan, P.; Kim, R.

2004-12-01

210

Overview of NASA’s Astrophysics Program Analysis Groups  

NASA Astrophysics Data System (ADS)

NASA’s Astrophysics Program Analysis Groups (PAGs) are responsible for facilitating and coordinating community input into the development and execution of NASA’s three astrophysics science themes: Cosmic Origins (COPAG), Exoplanet Exploration (ExoPAG), and Physics of the Cosmos (PhysPAG). The PAGs provide a community-based, interdisciplinary forum for analyses that support and inform planning and prioritization of activities within the Astrophysics Division’s programs. The Astrophysics PAGs report their input and findings to NASA through the Astrophysics Subcommittee of the NASA Advisory Council, of which all the PAG Chairs are members. In this presentation, we will provide an overview of the ongoing activities of NASA’s Astrophysics PAGs in the context of the opportunities and challenges currently facing the Astrophysics Division. NASA Headquarters representatives for the COPAG, ExoPAG, and PhysPAG will all be present and available to answer questions about the programmatic role of the Astrophysics PAGs.

Hudgins, Douglas M.; Perez, M. R.; Sambruna, R. M.

2013-01-01

211

Reviewing NASA research  

NASA Astrophysics Data System (ADS)

A recent report by NASA's Space and Earth Science Advisory Committee cautions against assigning the space agency's research and analysis efforts a lower priority than flight operations. If pre- and post-mission science continue to take a back seat to the actual building and launching of spacecraft, the report warns, it may eventually compromise NASA's ability to ensure U.S. leadership in space science.The report was written by a working group consisting of both NASA personnel and earth and space scientists from the academic community. The group was asked in May 1983 to examine the health of the research and analysis (R&A) program conducted by NASA's Office of Space Science and Applications (OSSA) in the earth and space sciences. While the group found that the quality of research management by scientists at NASA Headquarters was “impressive,” it also identified a critical shortage of cash for R&A programs. According to the report, “the immediate requirements involve an increase of about $10 million in each of the Astrophysics, Earth Science and Applications, and Solar System Exploration divisions, thereby establishing a new base funding level for these activities.”

212

NASA's Astrophysics Program  

NASA Astrophysics Data System (ADS)

The environment in which NASA and other Government agencies are operating is constantly changing. It is significantly different from the environment assumed by the recent 2010 Decadal Survey. NASA has described its plans for responding to the Decadal Survey in its 2012 Astrophysics Implementation Plan (http://science.nasa.gov/astrophysics/documents/). The NASA Astrophysics Division plans to: Enable the science and priorities identified by the Decadal Survey with new activities as well as through ongoing missions, including large missions, medium missions, and Explorers; Invest in the Astrophysics Research Program for developing the science cases and technologies of new missions and for maximizing the scientific return from operating missions; Engage in effective international and interagency partnerships that leverage NASA resources and extend the reach of our science results; Conduct studies of WFIRST and candidate probes that derive from the activities prioritized in the Decadal Survey and are responsive to the Decadal Survey science questions; Be prepared to begin a strategic mission, subject to the availability of funds, which follows from the Decadal Survey and is launched after the James Webb Space Telescope.

Hertz, Paul L.

2013-04-01

213

GEOS-3 Doppler Difference Tracking.  

National Technical Information Service (NTIS)

The Doppler difference method as applied to track the GEOS 3 spacecraft is discussed. In this method a pair of 2 GHz ground tracking stations simultaneously track a spacecraft beacon to generate an observable signal in which bias and instability of the ca...

B. Rosenbaum

1977-01-01

214

Gore scrutinizes NASA  

NASA Astrophysics Data System (ADS)

Senator Al Gore (D.-Tenn.) spotlighted the National Aeronautics and Space Administration's budget with three hearings of the Senate subcommittee on science, technology, and space, held between April 17 and 24. Gore, who chairs the Senate panel, particularly grilled NASA administrator Richard Truly and other witnesses over where space science stacks up as a budget priority. The agenda and costs for Mission to Planet Earth also provoked detailed discussion.Using the report by the Advisory Committee on the Future of the U.S. Space Program as a blueprint, Gore closely questioned Truly and the committee's chair, Norman Augustine, as to whether particular NASA program matched the committee's recommendations. In one such exchange about the new launch system, Gore charged that the Augustine panel had envisioned a $2-$4 billion cost, while NASA was now proposing an $11 billion system.

215

NASA science committee appointments  

NASA Astrophysics Data System (ADS)

NASA Administrator Michael Griffin has made three new appointments to the NASA Advisory Council's (NAC' Science Committee, NASA announced on 22 September. Edward David, president of EED, Inc., and science advisor to the President from 1970 to 1973, will serve as the committee-s chair. Also appointed to the committee were Owen Garriott, a retired scientist astronaut, and Alan Stern, executive director of the Space Science and Engineering Division of the Southwest Research Institute (San Antonio, Tex.). David, Garriott, and Stern-who are among nine new members of the full advisory committee that were announced on 22 September-will replace three members of the Science Committee who resigned in August: Science Committee Chair Charles Kennel (Scripps Institution of Oceanography), Wesley Huntress (Carnegie Institution of Washington), and Eugene Levy (Rice University). The NAC's next public meeting will be held on 12 October at Goddard Space Flight Center in Greenbelt, Md.

Zielinski, Sarah

2006-10-01

216

NASA Hurricane Data Portal  

NSDL National Science Digital Library

This portal is designed for viewing and studying hurricanes by utilizing measurements and data produced by National Aeronautics and Space Administration (NASA) remote-sensing instruments. Users can access current conditions information from NASA satellites (TRMM, AIRS, etc.), event-based information (maps and profiles) on active tropical storms or hurricanes, articles on the use of NASA data in hurricane monitoring and research, and archived maps and profiles from past storms. The Hurricane Viewer allows users to animate a hurricane path, showing levels of intensity and atmospheric information occuring at the time of the event. There are also 3-hour rainfall total images generated in near-real time for the Atlantic and Gulf regions by the Giovanni analysis tool.

2010-12-22

217

NASA Museum Alliance  

NASA Astrophysics Data System (ADS)

NASA’s Museum Alliance is a nationwide network of informal educators at museums, science centers, and planetariums that present NASA information to their local audiences. Begun in 2002 as the Mars Museum Visualization Alliance with advisors from a dozen museums, the network has grown to over 300 people from 200 organizations, including a dozen or so international partners. The network has become a community of practice among these informal educators who work with students, educators, and the general public on a daily basis, presenting information and fielding questions about space exploration. Communications are primarily through an active listserve, regular telecons, and a password-protected website. Professional development is delivered via telecons and downloadable presentations. Current content offerings include Mars exploration, Cassini, Stardust, Genesis, Deep Impact, Earth observations, STEREO, and missions to explore beyond our solar system.

Sohus, Anita

2006-12-01

218

Earth Views From the International Space Station  

NASA Video Gallery

In celebration of Earth Day, NASA presents images of Earth captured by cameras aboard the International Space Station. Traveling at an approximate speed of 17,500 miles per hour, the space station orbits Earth every 90 minutes from an altitude of approximately 220 miles, and can be seen from Earth with the naked eye. Its crew experiences 16 sunrises and sunsets each day.

Jim Wilson

2010-06-21

219

Orbit lifetime characteristics for Space Station  

Microsoft Academic Search

The factors that influence the orbital lifetime characteristics of the NASA Space Station are discussed. These include altitude, attitude, launch date, ballistic coefficient, and the presence of large articulating solar arrays. Examples from previous program systems studies are presented that illustrate how each factor affects Station orbit lifetime. The effect of atmospheric density models on orbit lifetime predictions is addressed

L. Deryder; G. M. Kelly; M. Heck

1988-01-01

220

NASA's Balloon Program  

NASA Astrophysics Data System (ADS)

The NASA Balloon Program has made numerous accomplishments in 2008 and 2009. The successful completion of several heavy lift missions launched in the United States, Antarctica, and Sweden has provided science with unparalleled opportunities for observations that would otherwise have not been possible. Economic uncertainty makes ballooning a highly attractive alternative to higher cost orbital and suborbital missions, many of which have longer lead times. NASA's near space balloon capability offers experimenters today the ability to quickly place instruments into observational environments. This paper discusses current and future capabilities and rough order magnitude costs and lead times compared against other methods for achieving observational science.

Gregory, David

221

NASA future missions  

NASA Astrophysics Data System (ADS)

The NASA astrophysics programs are outlined. The Hubble Space Telescope; the infrared background explorer, COBE; the Shuttle-based Astro-1/BBXRT UV and X-ray experiments; the extreme ultraviolet explorer, EUVE, the diffuse X-ray experiment, DXS, and the Gamma Ray Observatory, are described, and NASA involvement in ROSAT, exploring the X-ray sky, and ORFEUS, exploring the UV sky, is shown; SCOUT-class explorers are mentioned. Suborbital science obtained from aircraft and rockets will continue and expand; supporting research and technology will also continue and substantial effort will be expended on improvement of data systems to promote data accessibility and ease of use.

Pellerin, Charles J.; Stachnik, Robert V.

1988-06-01

222

Keeping Track Every Step of the Way.  

National Technical Information Service (NTIS)

Knowledge Sharing Systems, Inc., a producer of intellectual assets management software systems for the federal government, universities, non-profit laboratories, and private companies, constructed and presently manages the NASA Technology Tracking System,...

2001-01-01

223

NASA Facts, Space Shuttle.  

ERIC Educational Resources Information Center

This newsletter from the National Aeronautics and Space Administration (NASA) contains a description of the purposes and potentials of the Space Shuttle craft. The illustrated document explains some of the uses for which the shuttle is designed; how the shuttle will be launched from earth, carry out its mission, and land again on earth; and what a…

National Aeronautics and Space Administration, Washington, DC. Educational Programs Div.

224

What's Up at NASA?  

ERIC Educational Resources Information Center

|The National Aeronautics and Space Administration's (NASA) five-year plan to help elementary school teachers meet mathematics and science curriculum needs includes increasing the availability of instructional materials, providing greater access to teacher resource centers and workshops, and offering new sources of information for teachers and…

Clapp, Betty

1988-01-01

225

NASA's Education Website  

NSDL National Science Digital Library

This site from NASA features educational materials on astronomy and space sciences. Educational news, research, and announcements are featured on the homepage. Teaching materials for educators teaching in levels K-12 and higher are available on the site, and include lesson plans, links, and podcasts.

2010-10-25

226

NASA Facts, Solar Cells.  

ERIC Educational Resources Information Center

|The design and function of solar cells as a source of electrical power for unmanned space vehicles is described in this pamphlet written for high school physical science students. The pamphlet is one of the NASA Facts Science Series (each of which consists of four pages) and is designed to fit in the standard size three-ring notebook. Review…

National Aeronautics and Space Administration, Washington, DC.

227

NASA Visible Earth: Runoff  

NSDL National Science Digital Library

The NASA Visible Earth site is a searchable collection of images of the Earth taken by orbiting satellites. This section features a variety of images specifically illustrating effects of runoff. Each image is available in one or more graphic formats and sizes, and is accompanied by a description, as well as detailed metadata about how the image was obtained.

228

NASA Developing Comet 'Harpoon'  

NASA Video Gallery

A comet's gravity is approximately a millionth that of Earth's, so a spacecraft wouldn't actually land on a comet; it would have to attach itself somehow, probably with some kind of harpoon. NASA Goddard engineers figure if you have to use a harpoon anyway, you might as well design it to collect your sample. > Related story > Download high-res video

gsfcvideo

2011-12-12

229

The NASA Exoplanet Archive  

NASA Astrophysics Data System (ADS)

The NASA Exoplanet Archive is an online service that compiles and correlates astronomical information on extra solar planets and their host stars. The data in the archive include exoplanet parameters (such as orbits, masses, and radii), associated data (such as published radial velocity curves, photometric light curves, images, and spectra), and stellar parameters (such as magnitudes, positions, and temperatures). All the archived data are linked to the original literature reference.The archive provides tools to work with these data, including interactive tables (with plotting capabilities), interactive light curve viewer, periodogram service, transit and ephemeris calculator, and application program interface.The NASA Exoplanet Archive is the U.S. portal to the public CoRoT mission data for both the Exoplanet and Asteroseismology data sets. The NASA Exoplanet Archive also serves data related to Kepler Objects of Interest (Planet Candidates and the Kepler False Positives, KOI) in an integrated and interactive table containing stellar and transit parameters. In support of the Kepler Extended Mission, the NASA Exoplanet Archive will host transit modeling parameters, centroid results, several statistical values, and summary and detailed reports for all transit-like events identified by the Kepler Pipeline. To access this information visit us at: http://exoplanetarchive.ipac.caltech.edu

Ramirez, Solange; Akeson, R. L.; Ciardi, D.; Kane, S. R.; Plavchan, P.; von Braun, K.; NASA Exoplanet Archive Team

2013-01-01

230

NASA's Flight Opportunities Program  

NASA Video Gallery

NASA's Flight Opportunities Program is facilitating low-cost access to suborbital space, where researchers can test technologies using commercially developed vehicles. Suborbital flights can quickly evaluate new technologies in near-space where conditions such as weightlessness, increased radiation and vibrations mimic those of space, before launch into or beyond low-Earth orbit.

Monroe Conner

2012-03-12

231

NASA science communications strategy  

NASA Astrophysics Data System (ADS)

In 1994, the Clinton Administration issued a report, 'Science in the National Interest', which identified new national science goals. Two of the five goals are related to science communications: produce the finest scientists and engineers for the 21st century, and raise scientific and technological literacy of all Americans. In addition to the guidance and goals set forth by the Administration, NASA has been mandated by Congress under the 1958 Space Act to 'provide for the widest practicable and appropriate dissemination concerning its activities and the results thereof'. In addition to addressing eight Goals and Plans which resulted from a January 1994 meeting between NASA and members of the broader scientific, education, and communications community on the Public Communication of NASA's Science, the Science Communications Working Group (SCWG) took a comprehensive look at the way the Agency communicates its science to ensure that any changes the Agency made were long-term improvements. The SCWG developed a Science Communications Strategy for NASA and a plan to implement the Strategy. This report outlines a strategy from which effective science communications programs can be developed and implemented across the agency. Guiding principles and strategic themes for the strategy are provided, with numerous recommendations for improvement discussed within the respective themes of leadership, coordination, integration, participation, leveraging, and evaluation.

1995-06-01

232

NASA's Transonic Dynamics Tunnel  

NASA Video Gallery

The Transonic Dynamics Tunnel, or TDT, has contributed to the safety and development of a variety of aerospace vehicles and structures -- from planes to rockets and spaceships to parachutes. Hundreds of people came to NASA's Langley Research Center in Hampton, Virginia, to celebrate the TDT's half century of accomplishments.

Robert Allen

2010-10-27

233

NASA Imagery of Haiti  

NSDL National Science Digital Library

This page includes a collection of NASA images surrounding the Haiti Earthquake. Images include landslide risk maps, photos from the Terra Spacecraft, post-earthquake Port au Prince, Hispaniola topography map, anaglyph (3-D) map of southern Haiti, and 3-D topography of Port au Prince.

Nasa

234

NASA and Engineering Integrity.  

National Technical Information Service (NTIS)

This talk reviews the importance of integrity to engineering and NASA. The willingness to learn from failures and to speak out are important features of integrity. The failures of integrity have sometimes led to the disasters in the space program, (e.g. C...

M. D. Griffin

2008-01-01

235

NASA Trend Analysis Procedures.  

National Technical Information Service (NTIS)

This publication is primarily intended for use by NASA personnel engaged in managing or implementing trend analysis programs. 'Trend analysis' refers to the observation of current activity in the context of the past in order to infer the expected level of...

1993-01-01

236

NASA Facts, The Countdown.  

ERIC Educational Resources Information Center

|This pamphlet describes the preparations for launching a giant Atlas, Gemini (Titan 11), or Saturn launch vehicle. The material is intended for use in elementary general science. The pamphlet is one of the NASA Facts Science Series (each of which consists of four pages) and is designed to fit in the standard size three-ring notebook. Review…

National Aeronautics and Space Administration, Washington, DC.

237

NASA Computational Mobility.  

National Technical Information Service (NTIS)

This blue sky study was conducted in order to study the feasibility and scope of the notion of Computational Mobility to potential NASA applications such as control of multiple robotic platforms. The study was started on July lst, 2003 and concluded on Se...

2004-01-01

238

NASA Social: Behind the Scenes at NASA Dryden  

NASA Video Gallery

More than 50 followers of NASA's social media websites went behind the scenes at NASA's Dryden Flight Research Center during a "NASA Social" on May 4, 2012. The visitors were briefed on what Dryden is and does by center management, project engineers and technicians, toured various facilities, viewed research and support aircraft, and even had their photos taken in the cockpit of a NASA F/A-18.

Monroe Conner

2012-05-09

239

NASA - NASA eClips™: Designing Unmanned Aerial Vehicles  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

240

NASA - NASA eClips™: Digging in Moon Dirt  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

241

Development of the Acoustic Design of NASA Glenn Research Center's New Reverberant Acoustic Test Facility.  

National Technical Information Service (NTIS)

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is leading the design and build of the new world-class vibroacoustic test capabilities at the NASA GRC s Plum Brook Station in Sandusky, Ohio. Benham Companies, LLC is cu...

A. D. Hozman A. M. McNelis M. E. McNelis W. O. Hughes

2011-01-01

242

Space Station Freedom Utilization Conference. Executive summary  

NASA Astrophysics Data System (ADS)

The Space Station Freedom Utilization Conference was held on 3-6 Aug. 1992 in Huntsville, Alabama. The purpose of the conference was to bring together prospective space station researchers and the people in NASA and industry with whom they would be working to exchange information and discuss plans and opportunities for space station research. Topics covered include: research capabilities; research plans and opportunities; life sciences research; technology research; and microgravity research and biotechnology.

1993-03-01

243

Office of Education - NASA Headquarters  

NASA Website

brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

244

Appendix a: NASA Information Services.  

National Technical Information Service (NTIS)

At the heart of the NASA Scientific and Technical Information system is a database of aerospace information comprising more than 3 million documents. The content of the collection is in keeping with NASA's mission. Subjects covered are aeronautics, astron...

1990-01-01

245

NASA Reveals Most Unusual Planet  

NASA Video Gallery

In exploring the universe, NASA has uncovered one planet more unusual than all others. This 30 second video shows you which planet that is, and explains that NASA science helps us better understand this world without equal.

gsfcvideo

2010-07-01

246

NASA Electronic Professional Development Network  

NASA Website

[Educators Grades K-12] [Available: Nationally] The NASA electronic Professional Development Network, or ePDN, develops and delivers NASA-related online courses, workshops and events for the benefit of STEM K-12 teachers across the nation

247

NASA Standard: Trend Analysis Techniques.  

National Technical Information Service (NTIS)

Descriptive and analytical techniques for NASA trend analysis applications are presented in this standard. Trend analysis is applicable in all organizational elements of NASA connected with, or supporting, developmental/operational programs. This document...

1990-01-01

248

Model-Based Systems Engineering Pilot Program at NASA Langley.  

National Technical Information Service (NTIS)

NASA Langley Research Center conducted a pilot program to evaluate the benefits of using a Model-Based Systems Engineering (MBSE) approach during the early phase of the Materials International Space Station Experiment-X (MISSE-X) project. The goal of the ...

D. G. Murphy K. G. Vipavetz S. I. Infeld

2012-01-01

249

Space-Age Geodesy: The NASA Crustal Dynamics Project  

Microsoft Academic Search

The NASA Crustal Dynamics Project has deployed satellite laser ranging (SLR) systems and very-long-baseline-interferometer (VLBI) systems for measurements of global and regional crustal motions and Earth rotation parameters. In 1984, the several year buildup of the network approached full capability. During 1984, the SLR systems measured 142 unique baselines between stations for the purpose of determining plate motion between the

Robert Coates; Herbert Frey; Gilbert Mead; John Bosworth

1985-01-01

250

NORTH SIDE FACING TRACK, SHOWING ELECTRICAL BOX AND CONCRETE VAULT ...  

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

NORTH SIDE FACING TRACK, SHOWING ELECTRICAL BOX AND CONCRETE VAULT - Edwards Air Force Base, South Base Sled Track, Electrical Distribution Station, South side of Sled Track, Lancaster, Los Angeles County, CA

251

Precision orbit determination at the NASA Goddard Space Flight Center  

Microsoft Academic Search

The GEODYN Computer program has been developed by the Geodynamics Branch at the NASA Goddard Space Flight Center (GSFC) for accurate satellite orbit and tracking data analysis. The software is currently used for baseline solutions for the Crustal Dynamic Project (Smith et al. \\/1\\/), gravity field determination for the TOPEX\\/POSEIDON mission (Marsh et al. \\/2\\/), SEASAT and LAGEOS data analysis,

B. Putney; R. Kolenkiewicz; D. Smith; P. Dunn; M. H. Torrence

1990-01-01

252

3-D mapping of an underground mall using a tracked vehicle with four sub-tracks  

Microsoft Academic Search

The authors attempted to create a 3-D map of an underground mall and subway station using a tracked vehicle. This paper is a field report of the 3-D mapping of the Sendai subway station by the tracked vehicle in Dec. 2007. From the ticket barriers to the platform, the Sendai subway station consists of three floors. For the 3-D mapping,

Kazunori Ohno; Satoshi Tadokoro; Keiji Nagatani; Eiji Koyanagi; Tomoaki Yoshida

2009-01-01

253

NASA Now Minute: Black Holes  

NASA Video Gallery

In this NASA Now episode, Dr. Daniel Patnaude talks about how his team discovered a baby black hole, why this is important and how black holes create tidal forces. Throughout his discussion, Patnaude dispels many common misconceptions about black holes and the nature of the environment surrounding the feature. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-02-09

254

NASA Earth Science Enterprise Education  

NASA Astrophysics Data System (ADS)

NASA Earth Science Enterprise is taking active steps in supporting NASA's mission: To understand and protect our home planet To explore the Universe and search for life To inspire the next generation of explorers .as only NASA can. The role that scientists and engineers play in the Enterprise's educational endeavor will be discussed.

Wei, M.; Asrar, G.

2002-12-01

255

NASA eClips™: Honeybees  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

256

NASA eClips™: Gigapan  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

257

NASA Budget Focuses on Exploration  

Microsoft Academic Search

NASA has decided to rebalance its priorities following several years of healthy growth for science, turning its focus instead towards expanding support for manned space exploration, explained NASA Administrator Michael Griffin at a 16 February hearing before the U.S. House of Representatives Committee on Science. The Bush Administration has requested $16.8 billion for NASA in Fiscal Year 2007, an increase

Sarah Zielinski

2006-01-01

258

NASA eClips™: Biofeedback  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

259

NASA's Earth Day Video Contest  

NASA Video Gallery

Everyone knows NASA as the space exploration agency. It's easy to forget that exploring Earth is also exploring a celestial body. It is, in fact, the only planet we've ever been to -- our Home Frontier. To learn about NASA's Earth Day video contest, visit: http://www.nasa.gov/topics/earth/features/earth-videos.html

gsfcvideo

2011-04-21

260

NASA - "Colors of the Sun"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

261

Contacting NASA's Langley Research Center  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

262

NASA Dryden Flight Research Center  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

263

NASA - Technology Demonstration Missions (TDM)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

264

Space Station: Impact of the expanded Russian role on funding and research. Report to the Ranking Minority Member, Subcommittee on Oversight of Government Management, Committee on Governmental Affairs, US Senate  

NASA Astrophysics Data System (ADS)

An examination is made on the impact of Russian participation in NASA's space station program. This interim report deals with whether expanded Russian participation will (1) reduce space station funding requirements by $2 billion, as estimated by NASA, and (2) improve the station's capabilities for conducting research. Results at this time are that (1) NASA's estimated savings in the space station program would be largely offset by an estimated $1.4 billion in increased funding requirements accounted for in other parts of NASA's budget and (2) some of NASA's $2 billion savings may not be attributable to Russian participation. Russian participation in the space station would substantially increase overall station research resources.

Warren, David; Degnan, Frank; Edwards, Lee; Eiserman, Richard; Zadjura, Mona; Barnabas, Vijay; Coleman, Elaine; Gilchrist, John; Smythe, Wendy; Jones, Mae

1994-06-01

265

Canada's role on space station.  

PubMed

The paper addresses the evolution of the Canadian Space Station Program between 1981 and 2003. Discussions with potential international partners, aimed at jointly developing the current International Space Station program, were initiated by NASA in 1982. Canada chose, through the further development of the technologies of Canadarm on the space shuttle, to provide and operate an advanced and comprehensive external robotics system for space station, and to use the space station for scientific and commercial purposes. The program was to become a corner-stone of the new Canadian Space Agency. The development phase of the Canadian Space Station Program has been completed and two of the three major elements are currently operational in space. PMID:16010765

Doetsch, Karl

266

NASA head sworn in  

NASA Astrophysics Data System (ADS)

James C. Fletcher was sworn in on May 12, 1986, as administrator of the National Aeronautics and Space Administration (NASA). At a news conference after he was sworn in, Fletcher said that NASA would deal with both its technical problems and its procedural problems before the shuttle will fly again. According to press accounts, he stressed that funds should be made available to replace the Challenger orbiter, which was lost in an explosion on January 28.Fletcher, who had also headed the agency from 1971 to 1977, succeeds James M. Beggs, who was indicted in December 1985 for conspiring to defraud the federal government while serving as a senior executive at the General Dynamics Corporation.

267

NASA balloon technology developments  

NASA Astrophysics Data System (ADS)

The National Aeronautics and Space Administration (NASA) Balloon Program has been, and will continue to be, committed to improving the capabilities of balloons to support science missions. Fundamental to vehicle improvement is a program of technology development that will enable improved flight performance throughout the next decade. The program's technology thrust areas include: materials, vehicle design & development, structural analysis, operations & support systems, performance modeling and planetary balloons. Building on the foundations of the 18-year research and development program, a technology roadmap has been generated which identifies specific areas of interest to NASA and the vision of future developments. The major components of the roadmap are: vehicle systems, ballooncraft systems, operational and safety support systems, and planetary vehicles. Current technology activities include nanocomposite balloon films, a new balloon designed to lift 3600 kgs to 36 km, a balloon rotation rate study and Mars pumpkin balloon investigations. The technology roadmap, as well as specific projects and recent advancements, will be presented.

Fairbrother, D. A.

268

NASA Hurricane Data Portal  

NSDL National Science Digital Library

This portal is designed for viewing and studying hurricanes by utilizing measurements and data produced by National Aeronautics and Space Administration (NASA) remote-sensing instruments. Users can access current conditions and information from the Hurricane Data Analysis Tool (formerly the TRMM QuikScat Analysis tool), event-based information (maps and profiles) on active tropical storms or hurricanes, articles on the use of NASA data in hurricane monitoring and research, and archived maps and profiles from past storms. The Hurricane Viewer allows users to animate a hurricane path, showing levels of intensity and atmospheric information occurring at the time of the event. There are also 3-hour rainfall total images generated in near-real time for the Atlantic and Gulf regions by the Giovanni analysis tool.

269

Design Study Conducted of a Stirred and Perfused Specimen Chamber for Culturing Suspended Cells on the International Space Station.  

National Technical Information Service (NTIS)

A tightly knit numerical/experimental collaboration among the NASA Ames Research Center, NASA Glenn Research Center, and Payload Systems, Inc., was formed to analyze cell culturing systems for the International Space Station. The Cell Culture Unit is a fa...

E. S. Nelson J. P. Kizito

2003-01-01

270

NASA: Habitable Worlds  

NSDL National Science Digital Library

NASA's Habitable Worlds website encourages visitors to "search the solar system for signs of life," by selecting a "World to Explore." This creatively designed website smartly displays our solar system's colorful planets or worlds amidst the dark background of space. In order to gain in-depth information specific to each planet, users simply click on the world of their choosing. Each planet page provides beautiful images and information about habitability, moons, and more.

271

NASA Astrobiology Institute  

NSDL National Science Digital Library

This site provides information on NAI research, a library of publications, sections for teachers and students, and an Ask An Expert section. The student section features Astro-Venture, where students can search for and build a habitable planet; Habitable Worlds, to search the solar system for planets that might support life; and Mysteries of Microbes, containing videos and biographies of astrobiologists. The teacher section contains an astrobiology-related resource catalog of NASA sites.

NASA Astrobiology Institute (NAI); National Aeronautics and Space Administration (NASA) Ames Research Center (ARC)

272

NASA Astrobiology Institute  

NSDL National Science Digital Library

This site provides information on NAI research, a library of publications, sections for teachers and students, and an Ask An Expert section. The student section features Astro-Venture, where students can search for and build a habitable planet; Habitable Worlds, to search the solar system for planets that might support life; and Mysteries of Microbes, containing videos and biographies of astrobiologists. The teacher section contains an astrobiology-related resource catalog of NASA sites.

2010-03-05

273

NASA Astrobiology Institute (NAI)  

NSDL National Science Digital Library

This site provides information on NAI research, a library of publications, sections for teachers and students, and an Ask An Expert section. The student section features Astro-Venture, where students can search for and build a habitable planet; Habitable Worlds, to search the solar system for planets that might support life; and Mysteries of Microbes, containing videos and biographies of astrobiologists. The teacher section contains an astrobiology-related resource catalog of NASA sites.

274

NASA Technology Transfer System  

Microsoft Academic Search

This paper discusses the modern approach of the implementation of Software as a Service (SaaS) for NASA as a way to reduce cost and increase efficiency. The Grid XML Datastore Framework is an extension of SaaS framework based on eXtensible Database technology (XDB). This is implemented to support the Innovative Partnership Program (IPP) for its Technology Transfer System (NTTS) project.

David A. Maluf; Takeshi Okimura; Mohana Gurram

2011-01-01

275

NASA: Solar System Exploration  

NSDL National Science Digital Library

NASA's Solar System Exploration website offers a wealth of information about the objects in our solar system, recent technology used to explore these worlds, space missions, and stories about the people behind the missions. Users will find image galleries, multimedia resources for teachers and learners, videos, animations, and other interactive features to explore the planets, comets, asteroids, the history of robotic exploration, and future missions.

2005-05-10

276

Design and Development of a Space Station Hazardous Material System for Assessing Chemical Compatibility.  

National Technical Information Service (NTIS)

As the Space Station nears reality in funding support from Congress, NASA plans to perform over a hundred different missions in the coming decade. Incrementally deployed, the Space Station will evolve into modules linked to an integral structure. Each mod...

R. T. Congo

1990-01-01

277

NASA Metrology and Calibration, 1980  

NASA Astrophysics Data System (ADS)

The proceedings of the fourth annual NASA Metrology and Calibration Workshop are presented. This workshop covered (1) review and assessment of NASA metrology and calibration activities by NASA Headquarters, (2) results of audits by the Office of Inspector General, (3) review of a proposed NASA Equipment Management System, (4) current and planned field center activities, (5) National Bureau of Standards (NBS) calibration services for NASA, (6) review of NBS's Precision Measurement and Test Equipment Project activities, (7) NASA instrument loan pool operations at two centers, (8) mobile cart calibration systems at two centers, (9) calibration intervals and decals, (10) NASA Calibration Capabilities Catalog, and (11) development of plans and objectives for FY 1981. Several papers in this proceedings are slide presentations only.

1981-04-01

278

The organized Space Station  

NASA Astrophysics Data System (ADS)

Space Station organization designers should consider the onboard stowage system to be an integral part of the environment structured for productive working conditions. In order to achieve this, it is essential to use an efficient inventory control system able to track approximately 50,000 items over a 90-day period, while maintaining peak crew performance. It is noted that a state-of-the-art bar-code inventory management system cannot satisfy all Space Station requirements, such as the location of a critical missing item.

Lew, Leong W.

279

Station Crew Training Integrator Talks With Students  

NASA Video Gallery

From NASA's International Space Station Mission Control Center, Expedition 34/35 Training Integrator Alicia Simpson participates in a Digital Learning Network (DLN) event with students from Christ the King School, Rutland, Vt. The DLN connects students and teachers with NASA experts and education specialists using online communication technologies like video/web conferencing and webcasting. Register for free, interactive events listed in the catalog or watch the webcasts.

Gerald T Wright

2012-12-20

280

Station Program Scientist Talks With Students  

NASA Video Gallery

From NASA's International Space Station Mission Control Center, Dr. Tara Ruttley, ISS Program Scientist, participates in a Digital Learning Network (DLN) event with students from Clark Creek STEM Academy in Acworth, Ga. The DLN connects students and teachers with NASA experts and education specialists using online communication technologies like video/web conferencing and webcasting. Register for free, interactive events listed in the catalog or watch the webcasts.

Gerald T Wright

2013-01-09

281

NASA's Next Generation Space Geodesy Program  

NASA Astrophysics Data System (ADS)

Requirements for the ITRF have increased dramatically since the 1980s. The most stringent requirement comes from critical sea level monitoring programs: a global accuracy of 1.0 mm, and 0.1mm/yr stability, a factor of 10 to 20 beyond current capability. Other requirements for the ITRF coming from ice mass change, ground motion, and mass transport studies are similar. Current and future satellite missions will have ever-increasing measurement capability and will lead to increasingly sophisticated models of these and other changes in the Earth system. Ground space geodesy networks with enhanced measurement capability will be essential to meeting the ITRF requirements and properly interpreting the satellite data. These networks must be globally distributed and built for longevity, to provide the robust data necessary to generate improved models for proper interpretation of the observed geophysical signals. NASA has embarked on a Space Geodesy Program with a long-range goal to build, deploy and operate a next generation NASA Space Geodetic Network (SGN). The plan is to build integrated, multi-technique next-generation space geodetic observing systems as the core contribution to a global network designed to produce the higher quality data required to maintain the Terrestrial Reference Frame and provide information essential for fully realizing the measurement potential of the current and coming generation of Earth Observing spacecraft. Phase 1 of this project has been funded to (1) Establish and demonstrate a next-generation prototype integrated Space Geodetic Station at Goddard's Geophysical and Astronomical Observatory (GGAO), including next-generation SLR and VLBI systems along with modern GNSS and DORIS; (2) Complete ongoing Network Design Studies that describe the appropriate number and distribution of next-generation Space Geodetic Stations for an improved global network; (3) Upgrade analysis capability to handle the next-generation data; (4) Implement a modern survey system to measure inter-technique vectors for co-location; and (5) Develop an Implementation Plan to build, deploy and operate a next-generation integrated NASA SGN that will serve as NASA's contribution to the international global geodetic network. An envisioned Phase 2 (which is not currently funded) would include the replication of up to ten such stations to be deployed either as integrated units or as a complement to already in-place components provided by other organizations. This talk will give an update on the activities underway and the plans for completion.

Pearlman, M. R.; Frey, H. V.; Gross, R. S.; Lemoine, F. G.; Long, J. L.; Ma, C.; McGarry, J. F.; Merkowitz, S. M.; Noll, C. E.; Pavlis, E. C.; Stowers, D. A.; Webb, F. H.; Zagwodski, T. W.

2012-04-01

282

NASA World Wind  

NSDL National Science Digital Library

This open-source application lets users experience Earth terrain in three dimensions, visiting any location by zooming in from satellite altitude. Fly-ins begin with a true-color image of the entire Earth (the "Blue Marble"), then employ Landsat 7 satellite imagery and Shuttle Radar Topography Mission data to display landmarks, geographic and cultural features, eye-level views and fly-throughs. The website includes instructions for downloading the software, a description of its features, screenshots, and a users' forum. There are also example applications, data add-on packs for use while the NASA server is offline, a frequently-asked-questions feature, and an instruction manual.

283

NASA Ames Research Group  

NSDL National Science Digital Library

The NASA Ames Research Group investigates "extraterrestrial materials and [is] especially interested in the formation, distribution, and fate of organic compounds (comprised primarily of carbon, like those in living things)." Users can discover the latest astrochemistry news and the Group's many missions such as Stardust, Spitzer, and Genesis. Students and educators can find informative explanations of the Group's research interests and its contributions to the field of astrochemistry. The website allows users to search the Group's publications by date, subject, or author. Researchers can find information on how to access the online database of Polycyclic Aromatic Hydrocarbon Infrared Spectra.

284

Observing With NASA  

NSDL National Science Digital Library

With this resource, users can control the ground-based MicroObservatory telescopes from their computer and download their images themselves, with no human intervention in the loop. Users can access the Observing With NASA "Control Telescope" web interface at anytime. The telescopes are weatherproof and do not require a dome for protection, and the "Control Telescope" software automatically lets users know which targets are up that night. Even first-time observers can control the instrument without dependence on a telescope operator or other outside "experts."

Dussault, Mary

2008-01-01

285

NASA revises shuttle schedule  

NASA Astrophysics Data System (ADS)

The new schedule for Space Shuttle missions and expendable launch vehicles (ELV's) calls for a 7-month delay in sending up the Hubble Space Telescope. NASA was forced to put off launching the telescope until February 1990 to keep the Magellan and Galileo missions within their narrow launch windows. The first post-Challenger shuttle launch is now scheduled for late this month. Discovery's most recent delays were due to a hydrogen leak discovered July 29 that has still not been corrected and an engine valve malfunction during an August 4 test fire.

Wainger, Lisa A.

286

NASA's Return to Flight  

NSDL National Science Digital Library

NASA promotes Discovery's mission to return astronauts to space more than two years after the Columbia accident. The website offers an overview of the flight mission and the crew members. Individuals can view images and videos of the scientists preparing for the space shuttle mission. Through short, informational videos, students can learn how the main engines, external airlock, parachutes, and other machines used during a space mission function. Scientists can read more in-depth discussions of the instruments. This website allows users to better understand the many components needed to complete a space mission.

287

NASA: Geodynamics Branch  

NSDL National Science Digital Library

The Geodynamics Branch at NASA's Goddard Space Flight Center conducts "research into the structure, dynamics, and evolution of the solid Earth and planets using space-techniques and remote sensing data." The website features the Branch's latest scientific findings, internship opportunities, and annual reports. Users can find fantastic images and text detailing many of its research projects such as the monitoring of oceanic islands with satellite remote sensing and the development of an interactive analysis tool to study the Mars Orbiter Laser Altimeter (MOLA) gridded data. Educators and students can find links to numerous, graphically enhanced tutorials and activities.

288

NASA's Astrophysics Suborbital Programs  

NASA Astrophysics Data System (ADS)

NASA's Suborbital Programs are the primary engines generating new scientists with the hardware and project management skills needed to lead new space missions. They also allow hands-on student participation in hardware development that is crucial to recruiting and training the next generation of scientists and engineers. They play important roles in the difficult process of migrating bench top technologies to space flight readiness levels, as well as quick migration of cutting-edge technologies to enable a space flight instruments. Initial steps already taken to reinvigorate these programs will be discussed, along with some options for maintaining technical and scientific momentum during times of funding stress.

Morse, Jon A.

2009-01-01

289

NASA: Newton Car  

NSDL National Science Digital Library

This experiment demonstrates Newton's Second Law of Motion by showing the reaction of a rolling car to increased mass and initial velocity. Students build the vehicle out of wooden blocks, wood screws, rubber bands, matchsticks, and fishing sinkers. By doing repeated trials of the experiment, it will become clear that the distance the car travels depends on the number of rubber bands used and the mass of the block (mass is increased by adding sinkers). This resource was developed by the NASA Glenn Research Center Aerospace Education Services Project.

Project, Nasa G.

2005-02-07

290

International Space Station: A Unique Platform For Terrestrial Remote Sensing.  

National Technical Information Service (NTIS)

The International Space Station (ISS) became operational in November of 2000, and until recently remote sensing activities and operations have focused on handheld astronaut photography of the Earth. This effort builds from earlier NASA and Russian space p...

C. A. Evans W. L. Stefanov

2012-01-01

291

The Tracking and Data Relay Satellite  

Microsoft Academic Search

The first Tracking and Data Relay Satellite (TDRS), a 5000 lb space vehicle that is to be launched by NASA in 1983 via the Space Shuttle, is described. The three principal modules of the TDRS are discussed, namely (1) the spacecraft structure module that houses the attitude control, electrical power, propulsion, and telemetry tracking, and command subsystems; (2) the payload

W. R. Harper; W. L. Woodson

1981-01-01

292

NASA's Near-Earth Object Program Office  

NASA Astrophysics Data System (ADS)

In early 1999, NASA established its Near-Earth Object Program Office at the Jet Propulsion Laboratory, with the stated objectives to: - Facilitate communications within the observing community and between the community and the public with respect to any potentially hazardous objects. - Establish and maintain a catalog of Near-Earth Objects (NEOs) and provide information on their future close Earth approaches and Earth impact probabilities. - Help coordinate ground-based observations in order to complete the Spaceguard Goal of discovering 90% of the Near-Earth Asteroids (NEAs) larger than one kilometer within a ten year period. - Support NASA Headquarters in coordinating with other government agencies and with foreign governments and international organizations on NEO issues. - Develop and support a strategy and plan for the scientific exploration of NEOs including their discovery, recovery, ephemerides, characterization, in-situ investigations, and resource potential. Significant progress has been made on all of these objectives. An award winning interactive NEO web site has been established (http://neo.jpl.nasa.gov/) to communicate information to the scientific community and public. An automatic update process (Sentry) has been established for all NEOs. As new astrometric data become available for a particular NEO, its orbit is automatically updated and future close Earth approach circumstances determined - including impact probabilities when appropriate. At timely intervals, metrics are generated and displayed on the web site to track the contributions of each NASA supported search site toward meeting the Spaceguard Goal. Initial efforts to coordinate the nightly search for NEAs within the United States have been undertaken. In an effort to facilitate the coordination of NEO activities on an international scale, fruitful interactions have taken place with personnel of the British Task Force, the Spaceguard Foundation, the Japanese Spaceguard Foundation and the international Organization for Economic Cooperation and Development (OECD).

Yeomans, D. K.; Baalke, R. C.; Chamberlin, A. B.; Chesley, S. R.; Chodas, P. W.; Giorgini, J. D.; Keesey, M. S.

2001-11-01

293

NASA Solar System Exploration Website  

NASA Astrophysics Data System (ADS)

The NASA Solar System Exploration website, http://solarsystem.nasa.gov, sponsored by the Science Director for Solar System Exploration, Office of Space Science, NASA, is a gateway to information about our solar system and NASA's missions and research to understand it. The site has been designed for easy navigation and is becoming known as a resource for educators, students, media, and publishers. Major subsections include latest news, newest images, a link to NASA research opportunities in space science, technology, missions, information on solar system bodies, the people who are involved in solar system exploration, and the history of solar system exploration in the space age. There is also a link to the NASA Solar System Exploration Education and Public Outreach Forum. Members of the planetary science community are invited to contribute suggestions, comments, and content to the website, including links to their own institutions and research.

Sohus, A. M.

2000-10-01

294

NASA Science Budget Choices Criticized  

NASA Astrophysics Data System (ADS)

NASA's decision to focus its science efforts on large missions at the expense of smaller missions and research is misguided and will have a long-term negative impact on attracting and retaining scientists and engineers to NASA-related science, several scientists testified at a 2 March hearing. Witnesses at the hearing before the U.S. House of Representatives Science Committee included NASA Associate Administrator for the Science Mission Directorate Mary Cleave and members or chairs of four U.S. National Academy of Sciences (NAS) decadal surveys of various aspects of NASA science. The witnesses discussed cuts and delays to NASA projects proposed in the agency's Fiscal Year 2007 budget request. NASA's science budget would grow by 1.5 percent in FY2007, and then by just one percent per year in 2008-2011 (see Eos 87(9), 2006).

Zielinski, Sarah

2006-03-01

295

NASA Shuttle Web: John Glenn Returns to Space  

NSDL National Science Digital Library

John Glenn, the first American in space, became the world's oldest astronaut when he returned to the stars yesterday, 36 years after his first flight on the nation's 123rd manned mission. At the NASA Shuttle Website for the mission, users can read about the crew, payloads, mission objectives, some of the experiments on aging and space involving Senator Glenn, and updates on the mission's current status. Realtime data offered at the site include telemetry, tracking displays, sightings, and orbital elements. The site also hosts several multimedia offerings such as preflight and launch videos (MPEG), animations (MPEG), Net Show broadcasts of NASA TV, photos, and RealPlayer audio broadcasts.

296

Space Station Crew Welcomes World's First Commercial Cargo Craft  

NASA Video Gallery

Aboard the International Space Station, Expedition 31 Flight Engineer Don Pettit of NASA, Flight Engineer Andre Kuipers of the European Space Agency and Flight Engineer Joe Acaba of NASA grappled and berthed the SpaceX Dragon spacecraft to the station’s Harmony module May 25, 2012, marking a milestone in spaceflight history. Dragon became the first commercially developed space vehicle to be launched to the station to join Russian, European and Japanese resupply craft that service the complex while restoring a U.S. capability to deliver cargo to the orbital laboratory.

Russell Todd D

2012-05-25

297

Architectural design proposal for a Martian base to continue NASA Mars Design Reference Mission  

Microsoft Academic Search

The issue of extraterrestrial bases has recently been a very vivid one. There are orbital stations currently existing and humans will travel to Mars around 2030. They will need stations established there, which will provide them the proper living conditions. Firstly, it might be a small module brought from Earth (e.g. NASA Mars Design Reference Mission module (DRM)), in later

Janek Kozicki

2008-01-01

298

NASA's Interstellar Probe Mission  

NASA Astrophysics Data System (ADS)

Sending a spacecraft beyond the heliopause to begin the exploration of our local galactic neighborhood will be one of the grand scientific enterprises of the next century. NASA's Interstellar Probe will be the first spacecraft designed to explore the nearby interstellar medium and its interaction with our solar system. In the mission concept developed in 1999 by NASA's Interstellar Probe Science and Technology Definition Team, a 400-m diameter solar sail accelerates the spacecraft to ~15 AU/year. The principal objectives of the Interstellar Probe mission would be to (1) explore the nature of the ISM and its implications for the origin and evolution of matter in our galaxy and the universe; (2) explore the influence of the ISM on the solar system and its dynamics and evolution; (3) explore the impact of the solar system on the ISM as an example of a stellar system with its environment; and (4) explore the outer solar system in search of clues to its origin and to the nature of other planetary systems. To achieve these broad, interdisciplinary objectives, Interstellar Probe will include a suite of advanced, low-power instruments designed to measure the detailed properties of the plasma, neutral atoms, energetic particles, magnetic fields, and dust in the outer heliosphere and nearby ISM. This talk will summarizes the conceptual mission design and the technological challenges presented by this ambitious mission.

Liewer, P. C.; Mewaldt, R. A.

2002-05-01

299

NASA scientific integrity policy  

NASA Astrophysics Data System (ADS)

On 16 December, NASA became the latest U.S. federal agency to issue a scientific integrity policy. It was issued less than 10 days after the U.S. National Oceanic and Atmospheric Administration (NOAA) issued its policy on the same topic (see "NOAA issues scientific integrity policy," Eos Trans. AGU, 92(50), 467, doi:10.1029/2011EO500004, 2011). The agency policies respond to earlier White House memos on the topic issued in 2009 and 2010. NASA is the fifth federal department or agency that has finalized a scientific integrity policy; the Department of the Interior and the National Science Foundation also have finalized their policies. As Eos went to press, 13 other policies were in near-final draft form, including those from the departments of Agriculture and Energy; the Environmental Protection Agency and the Department of Labor had indicated that they expected to submit their policies to the White House Office of Science and Technology Policy (OSTP) soon, OSTP director John Holdren wrote in a 21 December note on the office's Web site.

Showstack, Randy

300

NASA: Home and City  

NSDL National Science Digital Library

This site attempts to answer a question everyone has probably asked themselves: How does space exploration impact their daily life? NASA has provided this website dedicated to help answer that query. To start, visitors can click on the drawing of the house, on the left side of the screen. Once selected, visitors will hear realistic birds chirping, dogs barking, and birds coming out of the leafy tree to alight on the lawn. The two tabs that appear that say "Rotate", on either side of the screen, can be clicked on to rotate the house, to discover the rooms in which space exploration has had an impact. Visitors can pick a room, such as the kitchen, bathroom, or living room, and will find a list of items that have been invented or improved upon due to space exploration. The kitchen boasts "Enriched Baby Food", "Water Purification", and "Freeze-Dried Technology". Visitors can choose one of the items and listen to a brief video about it. After the video, a tab entitled "Click Here to Learn More" allows the visitor to read official documents relating to the discovery or enhancement, from NASA's Scientific and Technical Information website.

301

NASA's Origins Program  

NSDL National Science Digital Library

Since time immemorial, humans have asked such fundamental questions as "Are we alone" and "Where did we come from?". Taking on some of those fundamental questions through the use of scientific inquiry is the Origins program, operated under the auspices of NASA. As an introductory essay on the program authored by Alan Dresser on the site suggests: "The eruptive growth of 20th century astronomy has brought us an appreciation of how vast, old, and unearthly the universe is, and has left humanity struggling with a sense of our own significance consistent with the reality of who and what we are." With that rather awe-inspiring thought in mind, visitors will want to comb through the many insightful sections of the site, including those that provide answers (or at least what we know so far) to such questions as "Is there life on planets outside the solar system?" Additionally, visitors can read about NASA's different missions and learn about the new technologies under development that will allow voyages of discovery into space to continue these explorations over the coming decades.

2008-01-11

302

NASA telerobotics technology highlights  

SciTech Connect

The goal of the National Aeronautics and Space Administration`s (NASA`s) Telerobotics Program, part of the over-all research program of the Office of Advanced Concepts and Technology (OACT), is to develop the technology in space-borne systems that enables new space tasks in Earth-orbiting satellite and platform servicing; robotic tending of science payloads and instruments; and planetary surface exploration, scientific sampling, and in situ analysis. Our objective is that by 2004, 50% of the extra-vehicular activity (EVA)-required operations on orbit and on planetary surfaces may be conducted via remote operation. The technologies developed for space have important dual uses for commercial areas such as medical robotics, agriculture, and subsea welding; this synergy is being actively encouraged. Moreover, mutually reciprocal collaboration with international partners (e.g., Japan and Russia) has received increasing attention. The purpose of this paper is to provide an overview of some of the ongoing program activities, which are described briefly.

Weisbin, C.R.; Lavery, D.

1994-12-31

303

Ship Tracks South of Alaska  

NSDL National Science Digital Library

This page from NASA's Earth Observatory shows images of visible tracks made in the Earth's atmosphere from clouds forming around ship exhaust particles. One of these images shows the relative sizes of the particles, and the text relates the relative sizes to the relative brightness of the clouds that are formed.

2009-05-27

304

NASA: a path dependent organization  

Microsoft Academic Search

Mission agencies like NASA are complex systems, connecting people with science and technology to accomplish the desired tasks. Path dependence can help explain why NASA and other mission agencies often sacrifice long-term capabilities for short-term survival. The National Aeronautics and Space Act of 1958, followed by President Kennedy’s challenge, catapulted NASA to the moon, encouraged human exploration, and sped up

David Bruggeman

2002-01-01

305

NASA's next generation all-digital deep space network breadboard receiver  

Microsoft Academic Search

This work describes the breadboard advanced receiver (called ARX) that is currently being built for use in NASA's deep space network (DSN). This receiver has unique requirements in having to operate with very weak signals from deep space probes and provide high-quality telemetry and tracking data. The hybrid analog\\/digital receiver performs multiple functions, including carrier, subcarrier, and symbol synchronization. Tracking

Sami Hinedi

1993-01-01

306

A Survey of NASA’s Tropical Atmospheric Research Field Campaigns  

NASA Astrophysics Data System (ADS)

Field research campaigns are essential for observing and measuring actual Earth system phenomena and validation of computer models that simulate Earth systems. Ultimately, field data help improve the nation's ability to predict climate change and its impacts. Since 1998 NASA has conducted a number of field campaigns directed toward understanding the life cycle and processes of tropical storm systems. Sponsored through NASA’s Research and Analysis (R&A) programs the field campaigns employed an integrated mix of instrument scientists, aircraft crew and managers, atmospheric modelers, atmospheric and oceanographic scientists, and data & information technologists. Each field campaign employed multiple instruments situated on space borne platforms, aircraft and on the Earth’s surface. Typically these include the NASA ER2 research aircraft, a DC-8 airliner refitted with scientific instrumentation, NASA’s Earth observation satellites such as Aqua, Terra and TRMM, and Uninhabited Aerial Vehicles such as the ALTUS II and Global Hawk. This survey begins with a description of the third convection and moisture experiment (CAMEX-3). In 1998 CAMEX-3 successfully studied Hurricanes Bonnie, Danielle, Earl and Georges producing high spatial and temporal information of hurricane structure, dynamics, and motion. These data, when analyzed within the context of more traditional aircraft, satellite, and ground-based radar observations, provided additional insight to hurricane modelers and forecasters who continually strive to improve hurricane predictions. The next field campaign in 2001 was known as CAMEX-4. CAMEX-4 focused on the study of tropical cyclone development, tracking, intensification, and land falling impacts. NASA research aircraft flew over, through, and around hurricanes as they approached landfall in the Caribbean, Gulf of Mexico, and along the east coast of the United States. The Tropical Cloud Systems and Processes (TCSP) mission in 2005 focused on the study of the dynamics and thermodynamics of precipitating cloud systems and tropical cyclones. The TCSP experiment flew 12 science flights, including missions to Hurricanes Dennis and Emily, Tropical Storm Gert and an eastern Pacific mesoscale complex that may possibly have further developed into Tropical Storm Eugene. In August 2006 the NASA African Monsoon Multidisciplinary Analyses (NAMMA) campaign, based in the Cape Verde Islands, employed surface observation networks and aircraft to characterize the evolution and structure of African Easterly Waves (AEWs) and Mesoscale Convective Systems over continental western Africa. In 2010 NASA will continue these studies with the Genesis and Rapid Intensification Processes experiment. This field campaign will study how tropical storms form and develop into major hurricanes. NASA plans to use the DC-8 aircraft and the Global Hawk Unmanned Airborne System (UAS) and is soliciting proposals for instruments that can achieve the measurement requirements. Data from these campaigns is available from the Global Hydrology Resource Center (GHRC) in Huntsville Alabama, one of NASA’s Earth science data centers, managed by the Information Technology and Systems Center of UAHuntsville.

Yubin He, M.; Hardin, D. M.; Graves, S.; Conover, H.; Blakeslee, R.; Goodman, M.

2009-12-01

307

Industry awakens to NASA technology  

NASA Astrophysics Data System (ADS)

AIAA's Corporate Associates Program promotes links between NASA and industry and promises to boost the international competitiveness of U.S. industry. Small groups of touring executives see lab and shop presentations arranged by the program, where they are introduced to novel NASA-related technology. If a corporation is willing to take risks to advance an embryonic technology, NASA may grant exclusive rights. One of these technical exchange agreements is described. The main potential benefit for NASA is the creation of a possible source of capital for space industrialization.

McHugh, D.

1982-06-01

308

Station Models  

NSDL National Science Digital Library

This project will allow users to become acquainted with station models that are found on weather maps. Students will study the various atmospheric variables that are depicted on a station model and then practice on an interactive station model program. Part 1 - Being able to read and interpret weather maps is a very important skill in meteorology. One of the most basic skills of predicting the weather is being able to interpret a station model of a given location. A station model is a bundle of information that ...

Ertl, Mr.

2007-11-03

309

NASA balloon science program  

NASA Astrophysics Data System (ADS)

Scientific ballooning has for decades enabled science and technology investigations in near space with significant results from relatively modest investments in the instruments. In some cases the investigations enabled orbital missions, whereas others were competitive with space mis-sions. A sea change in scientific ballooning occurred in the 1990's with the inauguration of Long Duration Balloon (LDB) flights averaging about 15 days in one circumnavigation of Antarctica using conventional zero-pressure balloons floating in nearly constant sunlight. Their 0.8 -1.1 million cubic meter balloons carried 1 -2 ton science instruments as part of suspended payloads approaching 3 tons. The nearly routine achievement during the past decade of two circumnavi-gations averaging about 30 days and triple circumnavigations lasting up to 42 days has greatly increased expectations of scientific users. These circumpolar flights have been spectacularly successful, with many investigations utilizing multiple flights of payloads that were recovered and refurbished to minimize the life-cycle costs. NASA has been developing a super-pressure balloon for LDB flights at non-polar latitudes that would bring another sea change in scientific ballooning, while supporting a broader range of scientific investigations. A 7 million cubic feet test balloon flown 54 days during the 2008-2009 austral season with less than about 100 m altitude variations demonstrates the promise of this new balloon carrier. It shows that we are a step closer to Ultra Long Duration Balloon (ULDB) flights of about 100 days. The 2010 Na-tional Research Council report "Revitalization of NASA's Suborbital Program" recommends that NASA should provide increased funds for complex payloads that use its present LDB capability, and especially for ULDB payloads when that capability becomes available. Long-duration flights in both polar and non-polar regions will undoubtedly confirm the important contributions that ballooning can make in disciplines such as Cosmic Microwave Background and Infrared Science, High Energy Astrophysics, Particle Astrophysics, Solar Physics, Geospace Science, and Earth Science. Some results from past balloon-borne measurements and/or ex-pected results from ongoing and planned balloon-borne experiments in these disciplines will be presented.

Jones, W. Vernon

310

Highlighting Your Science to NASA  

NASA Astrophysics Data System (ADS)

An effort is underway to provide greater visibility within NASA headquarters, and to those who provide funding to NASA, of the outstanding work that is being performed by scientists involved in the Solar System Exploration Research and Analysis Programs, most of whom are DPS members. In support of this effort, a new feature has been developed for the NASA Headquarters Solar System Exploration Division web site whereby researchers can provide a synopsis of their current research results. The site (http://solarsystem.nasa.gov/spotlight/ - Username: your email address Password: sse) is an online submission area where NASA-funded scientists can upload the results of their research. There they provide their contact information, briefly describe their research, and upload any associated images or graphics. The information is available to a limited number of reviewers and writers at JPL. Each month, one researcher's work will be chosen as a science spotlight. After a writer interviews the scientist, a brief Power Point presentation that encapsulates their work will be given to Dr. Colleen Hartman at NASA headquarters. She will then present the exciting findings to Associate Administrator for Space Science, Dr. Ed Weiler. The information from some of these highlights can serve as a basis to bring Principal Investigators to NASA Headquarters for exposure to media through Space Science Updates on NASA television. In addition, the science results may also be incorporated into briefing material for the Office of Management and Budget and congressional staffers. Some spotlights will also be converted into feature stories for the Solar System Exploration website so the public, too, can learn about exciting new research. The site, http://solarsystem.nasa.gov/, is one of NASA's most visited. Over the past decade, there has been a trend of flat budgets for Research and Analysis activities. By giving more visibility to results of Solar System research, our goal is to encourage higher program funding levels from Congress and demonstrate the relevance of NASA research to the American public in general.

Sharkey, C.

2003-12-01

311

NASA's Exploration for Life  

NSDL National Science Digital Library

NASA's Exploration for Life is a Windows to the Universe Exploratour and provides information and images about kingdoms of life, environments on Earth and Mars, landforms, and the Mars Surveyor Program. Windows to the Universe is a user-friendly learning system pertaining to the Earth and Space sciences. The objective of this project is to develop an innovative and engaging web site that spans the Earth and Space sciences and includes a rich array of documents, including images, movies, animations, and data sets that explore the Earth and Space sciences and the historical and cultural ties between science, exploration and the human experience. Links at the top of each page allow users to navigate between beginner, intermediate, and advanced options for each topic level.

Johnson, Roberta

2000-07-01

312

NASA: Astrophysics Science Division  

NSDL National Science Digital Library

What goes on in outer space? This is a fascinating question and an ongoing line of human inquiry. The Astrophysics Science Division of NASA conducts a broad program of research in astronomy, astrophysics and fundamental physics, and this site provides access to information on the Division's projects, publications, and research agenda. Visitors can dive right in by looking over the Press Releases & Feature Stories area on the homepage. Here they can learn about upcoming dark energy missions, long duration balloons, and the remarkable work of the James Webb Space Telescope. In the Missions & Projects area, visitors can search through over 40 projects, which include the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission and the Broad Band X-ray Telescope.

2013-02-15

313

NASA: Aura Atmospheric Chemistry  

NSDL National Science Digital Library

The "Earth Observing System (EOS) Aura is a NASA mission to study the Earth's ozone, air quality, and climate" by researching the composition, chemistry, and dynamics of the Earth's atmosphere. Visitors can learn how Aura is investigating three questions: Is the Earth's ozone layer recovering? Is air quality getting worse? How is Earth's climate changing? Researchers can find extensive details about the flight, spacecraft devices and specifications, and the data processing and validation. Visitors can view an array of Aura images from 2000 to the present. The website discusses how the Aura group is collaborating with the American Chemical Society, the GLOBE Program, and the National Museum of Natural History in order to expand formal and informal science education.

314

NASA: Interactive Features  

NSDL National Science Digital Library

Amidst many strong and detailed government websites, the National Aeronautics and Space Administration (NASA) site always presents a rich variety of material for the space-curious public. Their "Interactive Features" area is embedded in their larger "Multimedia" site, and it's a fantastic kaleidoscope of sweeping views of Saturn, fun with the X-15 spacecraft, and more than a few (several dozen, actually) interactive timelines. First-time users can browse through the archive of features at their leisure, or they can also use the search engine to look for specific items. Some of the more noteworthy features here include a timeline which explores the history of "planet hunting" ("PlanetQuest Historic Timeline") and the trip through space in the "Virtual Lunar Outpost". It's easy to while away a few hours on the site and it is one that budding space scientists will want to bookmark.

315

Fluid physics and transport phenomena studies aboard the international space station: Planned experiments  

Microsoft Academic Search

This paper provides an overview of the microgravity fluid physics and transport phenomena experiments planned for the International Space Station. NASA’s Office of Life and Microgravity Science and Applications has established a world-class research program in fluid physics and transport phenomena. This program combines the vast expertise of the world research community with NASA’s unique microgravity facilities with the objectives

Bhim S. Singh

1999-01-01

316

NASA and The Semantic Web.  

National Technical Information Service (NTIS)

We provide an overview of several ongoing NASA endeavors based on concepts, systems, and technology from the Semantic Web arena. Indeed NASA has been one of the early adopters of Semantic Web Technology and we describe ongoing and completed R & D efforts ...

N. Ashish

2005-01-01

317

Concern Over NASA mission statementchanges  

NASA Astrophysics Data System (ADS)

U.S. Senators Susan Collins (R-Maine)and Joseph Lieberman (D-Conn.) expressedconcern about a change in NASA's mission statement-which eliminated the phrase `to understandand protect the home planet'-in a 31 Julyletter to NASA Administrator Michael Griffin.

Zielinski, Sarah

2006-08-01

318

NASA Facts, The Viking Mission.  

ERIC Educational Resources Information Center

|Presented is one of a series of publications of National Aeronautics and Space Administration (NASA) facts about the exploration of Mars. The Viking mission to Mars, consisting of two unmanned NASA spacecraft launched in August and September, 1975, is described. A description of the spacecraft and their paths is given. A diagram identifying the…

National Aeronautics and Space Administration, Washington, DC. Educational Programs Div.

319

NASA Robotics for Space Exploration.  

National Technical Information Service (NTIS)

This presentation focuses on NASA's use of robotics in support of space exploration. The content was taken from public available websites in an effort to minimize any ITAR or EAR issues. The agenda starts with an introduction to NASA and the 'Vision for S...

R. I. T. Fischer

2007-01-01

320

NASA Explorer Schools Teacher Recognition  

NASA Video Gallery

NASA Explorer Schools not only provides access to high-quality STEM classroom resources and professional development but also recognizes teachers, schools and students who become highly engaged with all the NES project has to offer. Highly engaged participants have the opportunity to apply for unique recognition opportunities for teachers, students and schools. Visit the website @ explorerschools.nasa.gov for more information.

Sandra May

2011-11-17

321

Proposed Facility Modifications to Support Propulsion Systems Testing Under Simulated Space Conditions at Plum Brook Station's Spacecraft Propulsion Research Facility (B-2).  

National Technical Information Service (NTIS)

Preparing NASA's Plum Brook Station's Spacecraft Propulsion Research Facility (B-2) to support NASA's new generation of launch vehicles has raised many challenges for B-2's support staff. The facility provides a unique capability to test chemical propulsi...

D. A. Edwards

2008-01-01

322

Proposed Facility Modifications to Support Propulsion Systems Testing Under Simulated Space Conditions at Plum Brook Station's Spacecraft Propulsion Research Facility (B-2).  

National Technical Information Service (NTIS)

Preparing NASA's Plum Brook Station's Spacecraft Propulsion Research Facility (B-2) to support NASA's new generation of launch vehicles has raised many challenges for B-2 s support staff. The facility provides a unique capability to test chemical propulsi...

D. A. Edwards

2007-01-01

323

NASA's Earth science flight program status  

NASA Astrophysics Data System (ADS)

NASA's strategic goal to "advance scientific understanding of the changing Earth system to meet societal needs" continues the agency's legacy of expanding human knowledge of the Earth through space activities, as mandated by the National Aeronautics and Space Act of 1958. Over the past 50 years, NASA has been the world leader in developing space-based Earth observing systems and capabilities that have fundamentally changed our view of our planet and have defined Earth system science. The U.S. National Research Council report "Earth Observations from Space: The First 50 Years of Scientific Achievements" published in 2008 by the National Academy of Sciences articulates those key achievements and the evolution of the space observing capabilities, looking forward to growing potential to address Earth science questions and enable an abundance of practical applications. NASA's Earth science program is an end-to-end one that encompasses the development of observational techniques and the instrument technology needed to implement them. This includes laboratory testing and demonstration from surface, airborne, or space-based platforms; research to increase basic process knowledge; incorporation of results into complex computational models to more fully characterize the present state and future evolution of the Earth system; and development of partnerships with national and international organizations that can use the generated information in environmental forecasting and in policy, business, and management decisions. Currently, NASA's Earth Science Division (ESD) has 14 operating Earth science space missions with 6 in development and 18 under study or in technology risk reduction. Two Tier 2 Decadal Survey climate-focused missions, Active Sensing of CO2 Emissions over Nights, Days and Seasons (ASCENDS) and Surface Water and Ocean Topography (SWOT), have been identified in conjunction with the U.S. Global Change Research Program and initiated for launch in the 2019-2020 timeframe. NASA will begin refurbishment of the SAGE III atmospheric chemistry instrument to be hosted by the International Space Station (ISS) as early as 2013 and will initiate a Gravity Recovery and Climate Experiment (GRACE) Follow-on mission for launch in 2016.

Neeck, Steven P.; Volz, Stephen M.

2010-10-01

324

Parting Moon Shots from NASA's GRAIL mission  

NASA Video Gallery

Three days prior to its planned impact on a lunar mountain, mission controllers activated the camera aboard one of NASA’s GRAIL twins to take some final photos from lunar orbit. Credit: NASA/JPL-Caltech     › GRAIL's mission site

Anthony Greicius

2013-01-10

325

14 CFR 1206.503 - NASA Headquarters.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false NASA Headquarters. 1206.503 Section 1206...PUBLIC Responsibilities § 1206.503 NASA Headquarters. (a) Except as otherwise...establishing reporting procedures throughout NASA to facilitate the preparation of such...

2013-01-01

326

14 CFR 1212.700 - NASA employees.  

Code of Federal Regulations, 2013 CFR

...Space 5 2013-01-01 2013-01-01 false NASA employees. 1212.700 Section 1212.700 Aeronautics...AERONAUTICS AND SPACE ADMINISTRATION PRIVACY ACT-NASA REGULATIONS NASA Authority and Responsibilities § 1212.700...

2013-01-01

327

Fast track lunar NTR systems assessment for the First Lunar Outpost and its evolvability to Mars  

Microsoft Academic Search

The objectives of the 'fast track' lunar Nuclear Thermal Rocket (NTR) analysis are to quantify necessary engine\\/stage characteristics to perform NASA's 'First Lunar Outpost' scenario and to assess the potential for evolution to Mars mission applications. By developing NTR\\/stage technologies for use in NASA's 'First Lunar Outpost' scenario, NASA will make a major down payment on the key components needed

Stanley K. Borowski; Stephen W. Alexander

1992-01-01

328

77 FR 38336 - NASA Advisory Council; Meeting  

Federal Register 2010, 2011, 2012, 2013

...the National Aeronautics and Space Administration (NASA) announces...Time. ADDRESSES: NASA Goddard Space Flight Center (GSFC), Building 1...Audit, Finance and Analysis --Commercial Space --Education and Public...

2012-06-27

329

NASA's New Millennium ST6 Project  

NASA Astrophysics Data System (ADS)

The purpose of NASA's New Millennium Program is to validate advanced technologies in space and thus lower the risk for the first mission user. The New Millennium ST6 project has developed two advanced, experimental technologies for use on spacecraft of the future. These technologies are the Autonomous Sciencecraft Experiment and the Inertial Stellar Compass. These technologies will improve a spacecraft's ability to: 1) Make intelligent decisions on what information to gather and send back to the ground 2) Determine its own attitude and adjust its pointing. The significance of these technologies is in making the space missions less dependent on operators on the ground and shift the decision making to the spacecraft itself. Future missions using these technologies will be able to reduce the size of the ground crew lowering the mission cost or allowing to deploy resources on other aspects of the mission. Autonomous pointing and science gathering will also allow the spacecraft to react to ephemeral events that otherwise could not be detected in time due to long communication times from deep space. Sciencecraft technology involves feature and change detection, continuous planning technology, and robust execution. It is equipped with software that checks spacecraft performance and has resources to prevent errors. The Inertial Stellar Compass will enable a spacecraft to continuously determine its attitude and recover its orientation after a temporary malfunction or power loss. This is done by the "marriage" of a miniaturized star camera and gyro system. Compass technology uses an active pixel sensor in a star-tracking camera and a three-axis system of microelectromechanical gyros. These technologies will revolutionize future NASA spacecraft and allow mission resources to focus on science goals. This work done at JPL under contract with NASA

Chmielewski, A. B.; Nelson, R. M.; Stevens, C. M.; Chien, S.; Davies, A.; Wyman, W.

2004-11-01

330

NASA's New Millennium ST6 Project  

NASA Astrophysics Data System (ADS)

NASA's New Millennium Program validates advanced technologies in space and thus lowers the risk for the first mission user. The New Millennium ST6 project has developed two advanced, experimental technologies for use on future missions. These technologies are the Autonomous Sciencecraft Experiment and the Inertial Stellar Compass. These technologies will improve a spacecraft's ability to: 1) Make intelligent decisions on what information to gather and send back to the ground 2) Determine its own attitude and adjust its pointing. The significance of these technologies is in making the space missions less dependent on operators on the ground and shift the decision making to the spacecraft itself. Future missions using these technologies will be able to reduce the size of the ground crew lowering the mission cost or allowing re-deployment of resources to other aspects of the mission. Autonomous pointing and science gathering will also allow the spacecraft to react to ephemeral events that otherwise could not be detected in time due to long communication times from deep space. Sciencecraft technology involves feature and change detection, continuous planning technology, and robust execution. It is equipped with software that checks spacecraft performance and has resources to prevent errors. The Inertial Stellar Compass will enable a spacecraft to continuously determine its attitude and recover its orientation after a temporary malfunction or power loss. This is done by the "marriage" of a miniaturized star camera and gyro system. Compass technology uses an active pixel sensor in a star-tracking camera and a three-axis system of microelectromechanical gyros. These technologies will revolutionize future NASA spacecraft and allow mission resources to focus on science goals. This work done at JPL under contract with NASA

Chmielewski, A. B.; Nelson, R. M.; Stevens, C. M.; Chien, S. A.; Davies, A.; Sherwood, R. L.; Wyman, W.

2004-12-01

331

NASA's New Millennium ST6 Project  

NASA Astrophysics Data System (ADS)

NASA's New Millennium Program is intended to validate advanced technologies in space and thus lower the risk for the first mission user. The New Millennium ST6 project has developed two advanced, experimental technologies for use on spacecraft of the future. These technologies are the Autonomous Sciencecraft Experiment and the Inertial Stellar Compass. These technologies will improve a spacecraft's ability to: 1) Make intelligent decisions on what information to gather and send back to the ground 2) Determine its own attitude and adjust its pointing. The significance of these technologies is in making the space missions less dependent on operators on the ground and shift the decision making to the spacecraft itself. Future missions using these technologies will be able to reduce the size of the ground crew lowering the mission cost or allowing to deploy resources on other aspects of the mission. Autonomous pointing and science gathering will also allow the spacecraft to react to ephemeral events that otherwise could not be detected in time due to long communication times from deep space. Sciencecraft technology involves feature and change detection, continuous planning technology, and robust execution. It is equipped with software that checks spacecraft performance and has resources to prevent errors. The Inertial Stellar Compass will enable a spacecraft to continuously determine its attitude and recover its orientation after a temporary malfunction or power loss. This is done by the "marriage" of a miniaturized star camera and gyro system. Compass technology uses an active pixel sensor in a star-tracking camera and a three-axis system of microelectromechanical gyros. These technologies will revolutionize future NASA spacecraft and allow mission resources to focus on science goals. This work done at JPL under contract with NASA

Nelson, R. M.; Chmielewski, A.; Stevens, C. M.; Chien, S.; Davies, A.; Wyman, W.

2005-05-01

332

NASA's Coastal and Ocean Airborne Science Testbed  

NASA Astrophysics Data System (ADS)

The Coastal and Ocean Airborne Science Testbed (COAST) Project is a NASA Earth-science flight mission that will advance coastal ecosystems research by providing a unique airborne payload optimized for remote sensing in the optically complex coastal zone. Teaming NASA Ames scientists and engineers with Biospherical Instruments, Inc. (San Diego) and UC Santa Cruz, the airborne COAST instrument suite combines a customized imaging spectrometer, sunphotometer system, and a new bio-optical radiometer package to obtain ocean/coastal/atmosphere data simultaneously in flight for the first time. The imaging spectrometer (Headwall) is optimized in the blue region of the spectrum to emphasize remote sensing of marine and freshwater ecosystems. Simultaneous measurements supporting empirical atmospheric correction of image data will be accomplished using the Ames Airborne Tracking Sunphotometer (AATS-14). Based on optical detectors called microradiometers, the NASA Ocean Biology and Biogeochemistry Calibration and Validation (cal/val) Office team has deployed advanced commercial off-the-shelf instrumentation that provides in situ measurements of the apparent optical properties at the land/ocean boundary including optically shallow aquatic ecosystems (e.g., lakes, estuaries, coral reefs). A complimentary microradiometer instrument package (Biospherical Instruments, Inc.), optimized for use above water, will be flown for the first time with the airborne instrument suite. Details of the October 2011 COAST airborne mission over Monterey Bay demonstrating this new airborne instrument suite capability will be presented, with associated preliminary data on coastal ocean color products, coincident spatial and temporal data on aerosol optical depth and water vapor column content, as well as derived exact water-leaving radiances.

Guild, L. S.; Dungan, J. L.; Edwards, M.; Russell, P. B.; Morrow, J. H.; Hooker, S.; Myers, J.; Kudela, R. M.; Dunagan, S.; Soulage, M.; Ellis, T.; Clinton, N. E.; Lobitz, B.; Martin, K.; Zell, P.; Berthold, R. W.; Smith, C.; Andrew, D.; Gore, W.; Torres, J.

2011-12-01

333

The NASA GEO-CAPE Mission  

NASA Astrophysics Data System (ADS)

The NASA Geostationary Coastal and Air Pollution Events (GEO-CAPE) mission was recommended for launch in the second phase of missions (2013-2016) by the 2007 U.S. National Research Council Earth Science Decadal Survey, “Earth Science and Applications from Space.” The mission's purpose is to identify human versus natural sources of aerosols and ozone precursors, track air pollution transport, and understand the short-term dynamics of coastal ecosystems. In this talk we will summarize the current status of GEO-CAPE mission study activities. Science working groups are developing and prioritizing the requirements for atmospheric composition and coastal ocean objectives. Studies of preliminary instrumentation and mission implementation alternatives are expected to begin in 2010.

Al-Saadi, J. A.; Jucks, K. W.; Bontempi, P. S.; Hilsenrath, E.; Iraci, L. T.; Campbell, J. W.; Fishman, J.; Kawa, S. R.; Mannino, A.

2009-12-01

334

NASA’s Advanced Cryocooler Technology Development Program (ACTDP)  

Microsoft Academic Search

Over the years, NASA has developed a wide variety of new cryocooler technologies, as they represent a significant enabling capability for both Earth and space-science missions. Recent achievements include 50–80 K Stirling, pulse tube, and Brayton flight cryocoolers, and multistage development-model coolers at temperatures down to 10K. The largest technology push within NASA right now is in the temperature range

R. G. Ross; D. L. Johnson

2006-01-01

335

Earthbound applications for NASA's physician workstation.  

PubMed

The dream of a space probe to Mars or an astronaut colony on the moon persists. Despite years of setbacks and delays, NASA continues to lay the foundation for a new frontier in space. The necessity of a self contained health maintenance facility is an integral part of this stellar venture. As a subsystem of this health maintenance facility, the physician or astronaut workstation was envisioned as the vehicle of interface between the computer resources of the space station and the care provider. Our efforts to define and build this interface have resulted in a series of programs which can now be tested and refined using earth-based applications. The modules which have dual-use application from the NASA workstation include: patient scheduling and master patient index, pharmacy, laboratory, medical library, problem list/progress notes, and digital medical records. Our current plan is to develop these tools as objects that can be assembled in a variety of configurations. This will allow the technology to be used by the private sector where each doctor can select the starting point of his outpatient office system and add modules as he makes progress in system integration and training. PMID:8106845

Grams, R; Yu, F S; Li, B; Iddings, E; Fiorentino, R; Shao, S; Wang, L; Broughton, H

1993-12-01

336

NASA Releases New Way to Measure Drought  

NSDL National Science Digital Library

NASA has unveiled its new Multi-Spectral Drought Indexer (MSDI), improving existing technology for measuring absorption and reflection of sunlight by plants in order to make maps of unprecedented detail. The data, which come from satellites, are translated by researchers into monthly maps of vegetation color changes, thus indicating how much soil moisture is available to plants. The existing index, Normalized Difference Vegetation Index (NDVI), has been in operation for 20 years, providing a relatively long time range over which to track plant moisture. Ultimately, the 20-year data in combination with the new high resolution data will be used to predict the intensity of future droughts. This site provides an overview of MSDI technology and drought studies. Highlights of the site include a page of images of North America and Africa comparing average vegetation color with that of drought years (.jpeg, .tiff), and animations of season cycles, satellite imaging technology, and drought history (QuickTime). Links to the original NASA press release and to the overseers, Goddard Space Center's Scientific Visualization Studio, are also present. Because of the potential for serious drought to immobilize nations for years at a time, the Multi-spectral Drought Indexer's release is important news to the world over.

2000-01-01

337

Space Station's biggest challenge - Servicing satellites in orbit  

Microsoft Academic Search

Attention is given to NASA's use of the prospective Space Station for the servicing of satellites in orbit, beginning with simple refueling tasks and culminating with the repair of sophisticated components. The Space Station will eventually perform all types of servicing on a variety of free-flying, reusable, unmanned platforms, or 'free flyers', which after being carried into low earth orbit

J. H. Brahney

1985-01-01

338

Conceptual design of the Space Station fluids module  

Microsoft Academic Search

The purpose of this paper is to describe the conceptual design of the Fluids Module for the International Space Station Alpha (ISSA). This module is part of the Space Station Fluids\\/Combustion Facility (SS FCF) under development at the NASA Lewis Research Center. The Fluids\\/Combustion Facility is one of several science facilities which are being developed to support microgravity science investigations

Dennis W. Rohn; Daniel P. Morilak; Jennifer L. Rhatigan; Todd T. Peterson

1994-01-01

339

Conceptual design of the Space Station combustion module  

Microsoft Academic Search

The purpose of this paper is to describe the conceptual design of the Combustion Module for the International Space Station Alpha (ISSA). This module is part of the Space Station Fluids\\/Combustion Facility (SS FCF) under development at the NASA Lewis Research Center. The Fluids\\/Combustion Facility is one of several science facilities which are being developed to support microgravity science investigations

Daniel P. Morilak; Dennis W. Rohn; Jennifer L. Rhatigan

1994-01-01

340

Space Station Live: Astronaut Don Pettit on Earth Photography  

NASA Video Gallery

In observance of Earth Day, Space Station Live commentator Pat Ryan talks with NASA astronaut Don Pettit, who along with his fellow Expedition 30/31 crew members captured more than a half a million photographs of Earth from aboard the International Space Station.

Gerald T Wright

2013-04-22

341

Canadian Space Agency Space Station Freedom Utilization Plans.  

National Technical Information Service (NTIS)

Under the terms of the NASA/CSA Memorandum of Understanding, Canada will contribute the Mobile Servicing System and be entitled to use 3 percent of all Space Station utilization resources and user accommodations over the 30 year life of the Station. Equal...

J. Faulkner R. Wilkinson

1992-01-01

342

Design of a Resistojet for Space Station Freedom.  

National Technical Information Service (NTIS)

In the mid 1990's, NASA will begin assembly of Space Station Freedom, a permanent outpost in a low-earth orbit. For the station to remain in that orbit, an altitude control system must be developed to resist the effects of atmospheric drag. One system bei...

J. Garza J. Reisman J. Tapia A. Wright

1993-01-01

343

Approach to Design Knowledge Capture for the Space Station.  

National Technical Information Service (NTIS)

The design of NASA's space station has begun. During the design cycle, and after activation of the space station, the reoccurring need will exist to access not only designs, but also deeper knowledge about the designs, which is only hinted in the design d...

D. B. Wechsler K. R. Crouse

1986-01-01

344

‘‘Fast Track’’ nuclear thermal propulsion concept  

Microsoft Academic Search

The objective of the Space Exploration Initiative (‘‘America at the Threshold...,’’ 1991) is the exploration of Mars by man in the second decade of the 21st century. The NASA ‘‘Fast Track’’ approach (NASA-LeRC Presentation, 1992) could accelerate the manned exploration of Mars to 2007. NERVA-derived nuclear propulsion represents a viable near-term technology approach to accomplish the accelerated schedule. Key milestones

Richard A. Johnson; Herbert R. Zweig; Martin H. Cooper; Jack Wett

1993-01-01

345

``Fast Track'' nuclear thermal propulsion concept  

Microsoft Academic Search

The objective of the Space Exploration Initiative (``America at the Threshold...,'' 1991) is the exploration of Mars by man in the second decade of the 21st century. The NASA ``Fast Track'' approach (NASA-LeRC Presentation, 1992) could accelerate the manned exploration of Mars to 2007. NERVA-derived nuclear propulsion represents a viable near-term technology approach to accomplish the accelerated schedule. Key milestones

Richard A. Johnson; Herbert R. Zweig; Martin H. Cooper; Jack Wett

1993-01-01

346

World Wind: NASA's Virtual Globe  

NASA Astrophysics Data System (ADS)

Virtual globes have set the standard for information exchange. Once you've experienced the visually rich and highly compelling nature of data delivered via virtual globes with their highly engaging context of 3D, it's hard to go back to a flat 2D world. Just as the sawbones of not-too-long-ago have given way to sophisticated surgical operating theater, today's medium for information exchange is just beginning to leap from the staid chalkboards and remote libraries to fingertip navigable 3D worlds. How we harness this technology to serve a world inundated with information will describe the quality of our future. Our instincts for discovery and entertainment urge us on. There's so much we could know if the world's knowledge was presented to us in its natural context. Virtual globes are almost magical in their ability to reveal natural wonders. Anyone flying along a chain of volcanoes, a mid-ocean ridge or deep ocean trench, while simultaneously seeing the different depths to the history of earthquakes in those areas, will be delighted to sense Earth's dynamic nature in a way that would otherwise take several paragraphs of "boring" text. The sophisticated concepts related to global climate change would be far more comprehensible when experienced via a virtual globe. There is a large universe of public and private geospatial data sets that virtual globes can bring to light. The benefit derived from access to this data within virtual globes represents a significant return on investment for government, industry, the general public, and especially in the realm of education. Data access remains a key issue. Just as the highway infrastructure allows unimpeded access from point A to point B, an open standards-based infrastructure for data access allows virtual globes to exchange data in the most efficient manner possible. This data can be either free or proprietary. The Open Geospatial Consortium is providing the leadership necessary for this open standards-based data access infrastructure. The open-source community plays a crucial role in advancing virtual globe technology. This world community identifies, tracks and resolves technical problems, suggests new features and source code modifications, and often provides high-resolution data sets and other types of user-generated content, all while extending the functionality of virtual globe technology. NASA World Wind is one example of open source virtual globe technology that provides the world with the ability to build any desired functionality and make any desired data accessible.

Hogan, P.

2007-12-01

347

NASA - Phoenix Missile Hypersonic Testbed  

NASA Website

Researchers at NASA's Dryden Flight Research Center at Edwards Air Force Base, Calif., and the Naval Air Warfare Center Weapons Division, China Lake, Calif., are investigating the use of surplus demilitarized Navy AIM-54 Phoenix air-launched ...

348

Women at Work in NASA.  

National Technical Information Service (NTIS)

Photographs and brief descriptions summarize the diversity of the female work force at NASA. Jobs are classified as: (1) technical support positions; (2) clerical and nonprofessional administrative; (3) professional administrative; and (4) professional sc...

H. G. Jenkins

1980-01-01

349

Aeronautics in NACA and NASA.  

National Technical Information Service (NTIS)

Initiated in 1915, the National Advisory Committee for Aeronautics/National Aeronautics and Space Administration (NACA/NASA) aeronautical programs have been the keystone of a sustained U.S. Government, industry, and university research effort which has be...

1991-01-01

350

NASA Dryden Fact Sheet - ERAST  

NASA Website

ERAST Environmental Research Aircraft and Sensor Technology Project Background The Environmental Research Aircraft and Sensor Technology (ERAST) project is a joint NASA-industry initiative to develop and demonstrate aeronautical technologies.

351

NASA Images of California Wildfires  

NSDL National Science Digital Library

This NASA "Looking at Earthâ webpage shows several satellite images of the October 2007 wildfires in Southern California. Several images illustrate how infrared penetrates the smoke to reveal the fires below. Text provides further information about each image.

2007-10-29

352

NASA Climate Change Resource Reel  

NSDL National Science Digital Library

This collection of resources from NASA includes animations and still shots covering a wide range of topics in climate, including the cryosphere, ocean sciences, changes on land, the atmosphere, and satellite images.

Nasa

353

NASA Breakthrough Propulsion Physics Program.  

National Technical Information Service (NTIS)

In 1996, NASA established the Breakthrough Propulsion Physics program to seek the ultimate breakthroughs in space transportation: propulsion that requires no propellant mass, propulsion that attains the maximum transit speeds physically possible, and brea...

M. G. Millis

1998-01-01

354

Overview of NASA Cryocooler Programs.  

National Technical Information Service (NTIS)

Mechanical cryocoolers represent a significant enabling technology for NASA's Earth and Space Science Enterprises, as well as augmenting existing capabilities in space exploration. An over-view is presented of on-going efforts at the Goddard Space Flight ...

R. F. Boyle R. G. Ross

2001-01-01

355

Boeing: International Space Station  

NSDL National Science Digital Library

Boeing, the prime contractor for the International Space Station (ISS), has developed this website to provide information on the technology of the program. The ISS will be more than four times as large as the Russian Mir when completed, and is "the largest, most complex international scientific project in history and our largest adventure into space to date." Boeing is responsible for the design, development, construction and integration of the ISS and assisting NASA in operating the orbital outpost. They provide an overview of the status of the project and describes the current configuration, components, structure, and systems with more detailed information on some sections. Visitors can follow links to also read more about the scientific research conducted by the expedition crew.

2005-11-03

356

Boeing: International Space Station  

NSDL National Science Digital Library

Boeing, the prime contractor for the International Space Station (ISS), has developed this website to provide information on the technology of the program. The ISS will be more than four times as large as the Russian Mir when completed, and is "the largest, most complex international scientific project in history and our largest adventure into space to date." Boeing is responsible for the design, development, construction and integration of the ISS and assisting NASA in operating the orbital outpost. They provide an overview of the status of the project and describes the current configuration, components, structure, and systems with more detailed information on some sections. Visitors can follow links to also read more about the scientific research conducted by the expedition crew.

357

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.

358

NASA: How Does This Work?  

NSDL National Science Digital Library

The videos on this website from NASA demonstrate how things developed and used at NASA work, including such things as solid rocket boosters, space shuttle main engines, and parachutes. The website is intended to "showcase the creativity and dedication that allow the challenges of space flight to become some of our greatest achievements." The videos footage and silted graphics are accompanied by narration and printed subtitles.

359

Detecting Swift Fox: Smoked-Plate Scent Stations Versus Spotlighting.  

National Technical Information Service (NTIS)

We compared two methods of detecting presence of swift fox: smoked-plate scent stations and spotlight counts. Tracks were counted on ten 1-mile (1.6-km) transects with bait/tracking plate stations every 0.1 mile (0.16 km). Vehicle spotlight counts were co...

D. W. Uresk K. E. Severson J. Javersak

2003-01-01

360

Tracking disease outbreaks  

NASA Astrophysics Data System (ADS)

Scientists have come one step closer to tracking outbreaks of bartonellosis, a potentially fatal vector-borne disease. Outbreaks of the disease, which was once thought to be found primarily in the high Andes Mountains of Peru, Ecuador, and Colombia, may be related to El Ni˜no events, according to researchers with NASA and the U.S. military.In findings reported on 17 January, climatology and disease prevention researchers said a study conducted in two regions in Peru points to a strong potential link between the 1997-1998 El Niño and an increase in sand flies, which are thought to be the disease host carriers.

Showstack, Randy

361

2. VAL CAMERA CAR, VIEW OF CAMERA CAR AND TRACK ...  

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

2. VAL CAMERA CAR, VIEW OF CAMERA CAR AND TRACK WITH CAMERA STATION ABOVE LOOKING WEST TAKEN FROM RESERVOIR. - Variable Angle Launcher Complex, Camera Car & Track, CA State Highway 39 at Morris Reservior, Azusa, Los Angeles County, CA

362

Stations Outdoors  

ERIC Educational Resources Information Center

Described is a program of outdoor education utilizing activity-oriented learning stations. Described are 13 activities including: a pond study, orienteering, nature crafts, outdoor mathematics, linear distance measurement, and area measurement. (SL)

Madison, John P.; And Others

1976-01-01

363

NASA Now Minute: Cryogenics Test Laboratory  

NASA Video Gallery

Find out why NASA researchers study fluids and materials at super cold temperatures for applications on Earth and in space. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2012-05-22

364

NASA Sounding Rocket Program educational outreach  

Microsoft Academic Search

Educational and public outreach is a major focus area for the National Aeronautics and Space Administration (NASA). The NASA Sounding Rocket Program (NSRP) shares in the belief that NASA plays a unique and vital role in inspiring future generations to pursue careers in science, mathematics, and technology. To fulfill this vision, the NASA Sounding Rocket Program engages in a host

P. J. Eberspeaker

2005-01-01

365

NASA Master Directory Quick Reference Guide.  

National Technical Information Service (NTIS)

The NASA Master Directory (MD) is a free, online, multidisciplinary directory of space and Earth science data sets (NASA and non-NASA data) that are of potential interest to the NASA-sponsored research community. The MD contains high-level descriptions of...

1991-01-01

366

NASA Now Minute: Biology: Extreme Green Biofuels  

NASA Video Gallery

Learn about a NASA indoor laboratory and outdoor greenhouse facility used to study the basic biology of plants as renewable energy sources. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2012-03-05

367

Lunar Colonization and NASA's Exploration Changes  

Microsoft Academic Search

Space colonization is not part of NASA's mission planning. NASA's exploration vision, mission goals and program implementations, however, can have an important affect on private lunar programs leading towards colonization. NASA's exploration program has been described as a journey not a race. It is not like the Apollo mission having tight schedules and relatively unchanging direction. NASA of this era

Raymond B. Gavert

2006-01-01

368

NASA Now Minute: Nanotechnology and Space  

NASA Video Gallery

In this NASA now program, Dr. Mike Oye describes the scale of nanotechnology, how properties of matter change and how nanowires could be used in future space exploration. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-05-17

369

AMELIA Tests in NASA Wind Tunnel  

NASA Video Gallery

This report from "This Week @ NASA" describes recent aerodynamic tests of a subscale model of the Advanced Model for Extreme Lift and Improved Aeroacoustics, or "AMELIA," in a NASA wind tunnel. The work, supported by funds from a NASA Research Announcement, is being conducted by NASA and researchers from California Polytechnic State University (Cal Poly).

Christopher O

2012-03-05

370

14 CFR 1221.109 - Use of the NASA Seal.  

Code of Federal Regulations, 2010 CFR

... 2009-01-01 false Use of the NASA Seal. 1221.109 Section 1221.109...AERONAUTICS ANDSPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2009-01-01

371

14 CFR 1221.109 - Use of the NASA Seal.  

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Use of the NASA Seal. 1221.109 Section 1221.109...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2010-01-01

372

14 CFR 1221.110 - Use of the NASA Insignia.  

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Use of the NASA Insignia. 1221.110 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2010-01-01

373

14 CFR 1221.103 - Establishment of the NASA Insignia.  

Code of Federal Regulations, 2010 CFR

...2009-01-01 false Establishment of the NASA Insignia. 1221.103 Section 1221...AERONAUTICS ANDSPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2009-01-01

374

14 CFR 1221.110 - Use of the NASA Insignia.  

Code of Federal Regulations, 2010 CFR

... 2009-01-01 false Use of the NASA Insignia. 1221.110 Section 1221...AERONAUTICS ANDSPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2009-01-01

375

14 CFR 1221.109 - Use of the NASA Seal.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Use of the NASA Seal. 1221.109 Section 1221.109...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

376

14 CFR 1221.106 - Establishment of the NASA Flag.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Establishment of the NASA Flag. 1221.106 Section 1221.106...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

377

14 CFR 1221.104 - Establishment of the NASA Logotype.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Establishment of the NASA Logotype. 1221.104 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

378

14 CFR 1221.102 - Establishment of the NASA Seal.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Establishment of the NASA Seal. 1221.102 Section 1221.102...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

379

14 CFR 1221.111 - Use of the NASA Logotype.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Use of the NASA Logotype. 1221.111 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

380

14 CFR 1221.113 - Use of the NASA Flags.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Use of the NASA Flags. 1221.113 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

381

14 CFR 1221.110 - Use of the NASA Insignia.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Use of the NASA Insignia. 1221.110 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

382

14 CFR 1221.103 - Establishment of the NASA Insignia.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Establishment of the NASA Insignia. 1221.103 Section 1221...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

383

14 CFR 1221.105 - Establishment of NASA Program Identifiers.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Establishment of NASA Program Identifiers. 1221.105 Section...AERONAUTICS AND SPACE ADMINISTRATION THE NASA SEAL AND OTHER DEVICES, AND THE CONGRESSIONAL SPACE MEDAL OF HONOR NASA Seal, NASA Insignia, NASA...

2013-01-01

384

NASA Carbon Monitoring System Program  

NASA Astrophysics Data System (ADS)

NASA has recently begun a focused program to provide products on the amount and distribution of carbon reservoirs and fluxes in the global environment informed by the increasing global observational capability for these quantities developed by NASA and its interagency and international partners. This program, known as a Carbon Monitoring System (CMS), serves as a user-responsive, product-oriented overlay onto the existing observational, modeling, and research programs sponsored by NASA's Earth Science Division (ESD). Initial emphasis is on two pilot products - one on terrestrial biomass and one on integrated emission/uptake ("flux"), as well as a "scoping study" that will enable longer-term planning built around the increasing global observational capability NASA expects to be launching in the next few years (e.g., Landsat Data Continuity Mission in 2012, reflight of Orbiting Carbon Observatory in 2013, decadal survey missions including ICESat-II in 2015 and DESDynI in 2017). Initial efforts on the pilot products are based largely at three NASA centers (Ames, Goddard, Jet Propulsion Laboratory), but will draw on the broader expertise of the research community through workshops (e.g., one held in Boulder in July, 2010) as well as a planned solicitation for a Science Definition Team to provide broader guidance into the development, evaluation, and future evolution of the pilot products. The NASA CMS activity, with its emphasis on utilization of NASA remote-sensing data, will complement related efforts of other Federal agencies; coordination with other agencies will be carried out through the US Global Change Research Program. In this talk, steps taken to initiate this activity in FY2010 and plans for its evolution into the future will be presented.

Kaye, J. A.; Doorn, B.; Jucks, K. W.; Wickland, D. E.; Bontempi, P. S.; "Nasa CMS Pilot Product; Scoping Study Teams"

2010-12-01

385

A successful failure: NASA’s crisis communications regarding Apollo 13  

Microsoft Academic Search

In April 1970, NASA faced its second major crisis when an explosion on board Apollo 13 threatened the lives of its three astronauts. NASA’s handling of the crisis not only would determine the fate of the three astronauts, but also the image of the space agency and possibly the future of American manned space exploration. This paper examines NASA’s crisis

James Kauffman

2001-01-01

386

Satellite tracking of threatened species  

USGS Publications Warehouse

In 1990, a joint effort of two U.S. federal agencies, NASA Goddard Space Flight Center (GSFC) and the Patuxent Wildlife Research Center, began. We initially joined forces in a project that used satellite telemetry to discover the winter home of a tiny dwindling population of Siberian Cranes. Since then several projects have emerged, and a web site was created to follow some of these activities. This web site is called the Satellite Tracking of Threatened Species and its location is http://sdcd.gsfc.nasa.gov/ISTO/satellite_tracking. It describes the overall program, and links you to three subsections that describe the projects in more detail: Satellite Direct Readout, Birdtracks, and Birdworld.

Williams, M.; Lunsford, A.; Ellis, D.; Robinson, J.; Coronado, P.; Campbell, W.

1998-01-01

387

Integration of a tracking laser range camera with the photogrammetry-based space vision system  

NASA Astrophysics Data System (ADS)

This paper presents the most up-to-date experimental results obtained during the integration of a 3D Laser Scanner Tracking System and the current Space Vision System used by NASA. Half scale models of modules of the Space Station Freedom have been built for this demonstration and comparison between the current method using video cameras and the Laser Scanner System are presented. The variable resolution laser scanner can track, in real time, targets and geometrical features of an object. The Laser Scanner System uses two high-speed galvanometers and a collimated laser beam to address individual targets on the object. Very high-resolution images and excellent tracking accuracy are obtained using Lissajous figures that provide high pointing accuracy of a laser beam. The prototype automatically searches and tracks, in 3D, targets attached to the object. The locations of the centroid of the detected targets are fed directly into the existing photosolution and attitude control modules of the Space Vision System.

Blais, Francois; Beraldin, J.-Angelo; Cournoyer, Luc; Christie, I.; Serafini, R.; Mason, K.; McCarthy, S.; Goodall, C.

2000-07-01

388

IFE Target Injection Tracking and Position Prediction Update  

SciTech Connect

To achieve high gain in an inertial fusion energy power plant, driver beams must hit direct drive targets with {+-}20 {mu}m accuracy ({+-}100 {mu}m for indirect drive). Targets will have to be tracked with even greater accuracy. The conceptual design for our tracking system, which predicts target arrival position and timing based on position measurements outside of the reaction chamber was previously described. The system has been built and has begun tracking targets at the first detector station. Additional detector stations are being modified for increased field of view. After three tracking stations are operational, position predictions at the final station will be compared to position measurements at that station as a measure of target position prediction accuracy.The as-installed design will be described together with initial target tracking and position prediction accuracy results. Design modifications that allow for improved accuracy and/or in-chamber target tracking will also be presented.

Petzoldt, Ronald W.; Jonestrask, Kevin [General Atomics (United States)

2005-05-15

389

50th Anniversary of NASA  

NSDL National Science Digital Library

After 50 years, NASA has a great deal to celebrate, and this site offers a rich multimedia journey through their first half-century. Things get started with an introduction by a rather friendly robot who gives a brief explanation of how to navigate the site. After that, visitors are treated to a few tunes from the 1950s (such as "Tutti Frutti") and they can click on the headquarters building to watch clips from early NASA films and then move on to "meet" T. Keith Glennan, NASA's first administrator. And that's just the 1950s, visitors can similarly move through the 1960s, 1970s, 1980s, 1990s, and 2000s, accompanied by music, archival video clips, and so on. It should be noted that the site is graphics-intensive, and visitors will benefit from viewing the site on a computer with a high-speed Internet connection.

390

My NASA Data Lesson Plans  

NSDL National Science Digital Library

MY NASA DATA (Mentoring and inquirY using NASA Data) is an effort to develop microsets of Earth science data that are interesting and useful to the K-12 and citizen scientist communities. The datasets can be used with existing curriculum and enable students to practice math skills using real measurements of Earth system variables and processes. The lesson plans consist of units created by NASA educators and contributing teachers who have incorporated Earth science microsets and the various computer-based tools, featured on the Website, into their classrooms. Subjects covered by the lesson plans include; surface types on the Earth, seasons, clouds, the Earth's energy budget, stratospheric ozone, snow cover, and measuring basic weather variables. Intended grade levels are clearly indicated for each lesson.

2004-01-02

391

NASA Budget Focuses on Exploration  

NASA Astrophysics Data System (ADS)

NASA has decided to rebalance its priorities following several years of healthy growth for science, turning its focus instead towards expanding support for manned space exploration, explained NASA Administrator Michael Griffin at a 16 February hearing before the U.S. House of Representatives Committee on Science. The Bush Administration has requested $16.8 billion for NASA in Fiscal Year 2007, an increase of 3.2 percent over the previous year. Most of the benefit would go to the exploration program, which would get a 55 percent increase in funding-for a total of $3.9 billion-primarily for the development of the new Crew Exploration Vehicle and Crew Launch Vehicle. The science budget would grow by 1.5 percent in FY2007-to $5.3 billion-and then is projected to grow by just one percent per year in 2008-2011.

Zielinski, Sarah

2006-02-01

392

My NASA Data Lesson Plans  

NSDL National Science Digital Library

MY NASA DATA (Mentoring and inquirY using NASA Data) is an effort to develop microsets of Earth science data that are interesting and useful to the K-12 and citizen scientist communities. The datasets can be used with existing curriculum and enable students to practice math skills using real measurements of Earth system variables and processes. The lesson plans consist of units created by NASA educators and contributing teachers who have incorporated Earth science microsets and the various computer-based tools, featured on the Website, into their classrooms. Subjects covered by the lesson plans include; surface types on the Earth, seasons, clouds, the Earth's energy budget, stratospheric ozone, snow cover, and measuring basic weather variables. Intended grade levels are clearly indicated for each lesson.

2011-06-23

393

Base Station Walk-Back  

NSDL National Science Digital Library

In this activity, learners will train to improve lung, heart, and other muscle endurance as they walk a progressive, measured distance. Learners measure out a course according to specific distances, walk/jog/run the distance, and record and graph their observations. This activity simulates how astronauts must train before missions in order to build up the endurance required to move in space. An embedded video on this page showcases the activity. Learners can complete this activity as part of NASA's Fit Explorer Challenge, in which learners train like astronauts, set goals, track their progress, and accumulate points to progress through Exploration Levels and earn certificates.

Center, Nasa J.

2012-06-26

394

NASA unit sets ambitious course  

NASA Astrophysics Data System (ADS)

After two decades of spectacular successes, planetary exploration has fallen upon hard times. It has been five years since a new spacecraft was launched toward the planets, and NASA has under current development only one planetary mission—Galileo, which will orbit Jupiter and probe its atmosphere in 1988. The intellectual challenge of understanding the planets and their common origin and evolution has not, of course, declined, and a great deal of exciting work is being accomplished using data (and samples) from past missions. But planetologists fear the demise of their discipline within a few years if momentum cannot be restored to NASA's program of planetary exploration.

Morrison, David

395

NASA NASA CONNECT: Special World Space Congress. [Videotape].  

ERIC Educational Resources Information Center

|NASA CONNECT is an annual series of free integrated mathematics, science, and technology instructional distance learning programs for students in grades 5-8. This video presents the World Space Congress 2002, the meeting of the decade for space professionals. Topics discussed range from the discovery of distant planets to medical advancements,…

National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.

396

Derivation of Relativistic Effects in Satellite Tracking.  

National Technical Information Service (NTIS)

Starting with the Schwarzschild solution to Einstein's field equations, the equations for relativistic corrections to satellite tracking are derived. Included are corrections for range from satellite to earth station, range from satellite to satellite, an...

L. R. Gibson

1983-01-01

397

75 FR 70951 - NASA Advisory Council; NASA Commercial Space Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...NATIONAL AERONAUTICS AND SPACE ADMINISTRATION [Notice: (10-148)] NASA Advisory Council; NASA Commercial Space Committee; Meeting AGENCY: National Aeronautics and Space Administration. ACTION: Notice of...

2010-11-19

398

NASA's Earth Science Flight Program overview  

NASA Astrophysics Data System (ADS)

NASA's Earth Science Division (ESD) conducts pioneering work in Earth system science, the interdisciplinary view of Earth that explores the interaction among the atmosphere, oceans, ice sheets, land surface interior, and life itself that has enabled scientists to measure global and climate changes and to inform decisions by governments, organizations, and people in the United States and around the world. The ESD makes the data collected and results generated by its missions accessible to other agencies and organizations to improve the products and services they provide, including air quality indices, disaster management, agricultural yield projections, and aviation safety. In addition to four missions now in development and 14 currently operating on-orbit, the ESD is now developing the first tier of missions recommended by the 2007 Earth Science Decadal Survey and is conducting engineering studies and technology development for the second tier. Furthermore, NASA's ESD is planning implementation of a set of climate continuity missions to assure availability of key data sets needed for climate science and applications. These include a replacement for the Orbiting Carbon Observatory (OCO), OCO-2, planned for launch in 2013; refurbishment of the SAGE III atmospheric chemistry instrument to be hosted by the International Space Station (ISS) as early as 2014; and the Gravity Recovery and Climate Experiment Follow-On (GRACE FO) mission scheduled for launch in 2016. The new Earth Venture (EV) class of missions is a series of uncoupled, low to moderate cost, small to medium-sized, competitively selected, full orbital missions, instruments for orbital missions of opportunity, and sub-orbital projects.

Neeck, Steven P.; Volz, Stephen M.

2011-10-01

399

Orbital Debris and NASA's Measurement Program  

NASA Astrophysics Data System (ADS)

Since the launch of Sputnik in 1957, the number of manmade objects in orbit around the Earth has dramatically increased. The United States Space Surveillance Network (SSN) tracks and maintains orbits on over nine thousand objects down to a limiting diameter of about ten centimeters. Unfortunately, active spacecraft are only a small percentage ( ~ 7%) of this population. The rest of the population is orbital debris or ``space junk" consisting of expended rocket bodies, dead payloads, bits and pieces from satellite launches, and fragments from satellite breakups. The number of these smaller orbital debris objects increases rapidly with decreasing size. It is estimated that there are at least 130,000 orbital debris objects between one and ten centimeters in diameter. Most objects smaller than 10 centimeters go untracked! As the orbital debris population grows, the risk to other orbiting objects, most importantly manned space vehicles, of a collision with a piece of debris also grows. The kinetic energy of a solid 1 cm aluminum sphere traveling at an orbital velocity of 10 km/sec is equivalent to a 400 lb. safe traveling at 60 mph. Fortunately, the volume of space in which the orbiting population resides is large, collisions are infrequent, but they do occur. The Space Shuttle often returns to earth with its windshield pocked with small pits or craters caused by collisions with very small, sub-millimeter-size pieces of debris (paint flakes, particles from solid rocket exhaust, etc.), and micrometeoroids. To get a more complete picture of the orbital-debris environment, NASA has been using both radar and optical techniques to monitor the orbital debris environment. This paper gives an overview of the orbital debris environment and NASA's measurement program.

Africano, J. L.; Stansbery, E. G.

2002-05-01

400

'NASA Launchpad' Episode Wins Emmy  

NASA Video Gallery

A NASA video program aimed at helping high school students learn more about science, technology, engineering and mathematics has won an Emmy. The Emmy was awarded for this episode on "Bernoulli's Principle," explaining the relationship between pressure and speed and its impact in everyday life.

Jim Wilson

2010-06-09

401

NASA and the planetary imperative  

Microsoft Academic Search

Previous, existing, and planned NASA planetary programs are reviewed, along with near-earth and solar system studies which still offer areas of significant exploration. The moon received initial concentrated attention and space technology efforts due to the presence of scientific knowledge which served to define specific questions. A Mariner mission to Mars was completed in 1962 and led to the Viking

J. A. van Allen

1982-01-01

402

NASA Today: Mars Observer Segment  

NASA Astrophysics Data System (ADS)

The NASA news format primarily focuses on the 3 month orbit of Mars and the images obtained by the Observer spacecraft. The spacecraft orbits 310 miles from the surface and rotates once every 100 minutes. Other topics include the MODE mini-lab, Goddard student programs, and Pluto.

1993-08-01

403

NASA's Lunar Robotic Architecture Study  

Microsoft Academic Search

This report documents the findings and analysis of a 60-day agency-wide Lunar Robotic Architecture Study (LRAS) conducted by the National Aeronautics and Space Administration (NASA). Work on this study began in January 2006. Its purpose was to: Define a lunar robotics architecture by addressing the following issues: 1) Do we need robotic missions at all? If so, why and under

Daniel R. Mulville

2006-01-01

404

NASA Science Served Family Style  

NASA Astrophysics Data System (ADS)

Family oriented innovative programs extend the reach of many traditional out-of-school venues to involve the entire family in learning in comfortable and fun environments. Research shows that parental involvement is key to increasing student achievement outcomes, and family-oriented programs have a direct impact on student performance. Because families have the greatest influence on children's attitudes towards education and career choices, we have developed a Family Science program that provides families a venue where they can explore the importance of science and technology in our daily lives by engaging in learning activities that change their perception and understanding of science. NASA Family Science Night strives to change the way that students and their families participate in science, within the program and beyond. After three years of pilot implementation and assessment, our evaluation data shows that Family Science Night participants have positive change in their attitudes and involvement in science.  Even after a single session, families are more likely to engage in external science-related activities and are increasingly excited about science in their everyday lives.  As we enter our dissemination phase, NASA Family Science Night will be compiling and releasing initial evaluation results, and providing facilitator training and online support resources. Support for NASA Family Science Nights is provided in part through NASA ROSES grant NNH06ZDA001N.

Noel-Storr, Jacob; Mitchell, S.; Drobnes, E.

2010-01-01

405

Adjustable Autonomy with NASA Procedures  

Microsoft Academic Search

NASA's Exploration missions will require more effective use of human resources in space and on Earth. The use of automation to perform routine or hazardous tasks can free humans for other tasks. But increased use of automation must be done without compromising human safety or introducing unnecessary risk. At JSC we have developed technology for incrementally increasing the level of

Debra Schreckenghost; R. Peter Bonasso; David Kortenkamp; Scott Bell; Tod Milam; Carroll Thronesbery

406

NASA's telemedicine testbeds: Commercial benefit  

Microsoft Academic Search

The National Aeronautics and Space Administration (NASA) has been developing and applying telemedicine to support space flight since the Agency's beginning. Telemetry of physiological parameters from spacecraft to ground controllers is critical to assess the health status of humans in extreme and remote environments. Requisite systems to support medical care and maintain readiness will evolve as mission duration and complexity

Charles R. Doarn; Raymond Whitten

1998-01-01

407

NASA Facts, Mars and Earth.  

ERIC Educational Resources Information Center

|Presented is one of a series of National Aeronautics and Space Administration (NASA) facts about the exploration of Mars. In this publication, emphasis is placed on the sun's planetary system with note made that there is no one theory for the origin and subsequent evolution of the Solar System that is generally accepted. Ideas from many…

National Aeronautics and Space Administration, Washington, DC. Educational Programs Div.

408

NASA Capability Roadmaps Executive Summary.  

National Technical Information Service (NTIS)

This document is the result of eight months of hard work and dedication from NASA, industry, other government agencies, and academic experts from across the nation. It provides a summary of the capabilities necessary to execute the Vision for Space Explor...

D. Coulter G. Varsi H. Thronson J. Crooke R. Mueller R. Willcoxon T. Inman V. Regenie

2005-01-01

409

NASA Aerospace Battery Workshop 2001.  

National Technical Information Service (NTIS)

This document contains the proceedings of the 34th Annual NASA Aerospace Battery Workshop, hosted by the Marshall Space Flight Center on November 27-29, 2001. The workshop was attended by scientists and engineers from various agencies of the U.S. Governme...

2002-01-01

410

NASA programs in space photovoltaics  

SciTech Connect

Highlighted here are some of the current programs in advanced space solar cell and array development conducted by NASA in support of its future mission requirements. Recent developments are presented for a variety of solar cell types, including both single crystal and thin film cells. A brief description of an advanced concentrator array capable of AM0 efficiencies approaching 25 percent is also provided.

Flood, D.J.

1992-01-01

411

UWB Two-Cluster AOA Tracking Prototype System Design.  

National Technical Information Service (NTIS)

This presentation discusses a design effort for a prototype ultra-wideband (UWB) tracking system that is currently under development at NASA Johnson Space Center (JSC). The system is being studied for use in tracking of lunar/Mars rovers during early expl...

P. H. Ngo D. Arndt C. Phan J. Gross M. Rafford

2006-01-01

412

UWB Tracking System Design for Lunar/Mars Exploration.  

National Technical Information Service (NTIS)

This paper describes a design effort for a prototype ultra-wideband (UWB) tracking system that is currently under development at NASA Johnson Space Center (JSC). The system is being studied for use in tracking of lunar/Mars rovers during early exploration...

C. Phan D. Arndt J. Gross J. Ni P. Ngo

2006-01-01

413

NASA Earth Science Data Stewardship  

NASA Astrophysics Data System (ADS)

The Earth Science Data and Information System (ESDIS) Project at NASA Goddard Space Flight Center was established in the early 1990s to develop and maintain a core collection of NASA’s critical earth science data. Its mission was to provide an archive and distribution system for the huge volume of data and products from the major EOS missions. We have encountered and addressed engineering, scientific and organizational challenges that show stewardship is more than preserving the bits. Engineering - including petabyte scale archives that appeared daunting when we got started, but not so anymore, thanks to advances in hardware and information systems technology. Scientific - having knowledgeable people familiar with data being archived responsible for data in their respective disciplines; understanding what needs to be preserved; defining appropriate metadata; preserving usability; determining active research period vs. “inactive” preservation for potential future use, and the value of peer review processes. Organizational - setting up DAACs, getting them to work together, interoperability, enforcing standards and the producer’s point view as well as the end users’ point of view. This presentation will highlight organizational and technical aspects of being good data stewards for the data and information from the EOS missions. A timeline of key events, activities and accomplishments illustrate the fundamental elements of Earth science data stewardship over the course of the 15 year program. These range from the backup of raw instrument datasets at the onset to extending a common data model across a broad and diverse Earth science community. The relative advantages of standard and unique data formats, standard and extended metadata and data representation, and documentation continue to be specific to each Earth science discipline community practices. Best practices for sizing and technology refresh vary by data center but have application in planning future archives and provide perspective on stewardship challenges faced by the next generation of archives. The authors offer an opportunity to discuss long term plans for NASA’s Earth observation data.

Moses, J. F.; Ramapriyan, H. K.

2009-12-01

414

Ship Tracks Reveal Pollution's Effects on Clouds  

NASA Video Gallery

NASA's MODIS satellite instrument reveals how air pollution may alter clouds, affecting global temperatures. This narrated visualization illustrates the effect by showing how ship exhaust leaves brights cloud trails in clean ocean air. The ship tracks themselves are too small to affect global temperatures, but they help us understand how larger pollution sources might change clouds on a bigger scale.

gsfcvideo

2010-06-02

415

Testing Behind the Test Facility: The Acoustic Design of the NASA Glenn Research Center's World-Class Reverberant Acoustic Test Facility.  

National Technical Information Service (NTIS)

The National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC) is leading the design and build of the new world-class vibroacoustic test capabilities at the NASA GRC s Plum Brook Station in Sandusky, Ohio, U.S.A. Benham Companies, LL...

A. D. Hozman A. M. McNelis M. E. McNelis W. O. Hughes

2010-01-01

416

External Resource:NASA Science: Astrophysics: Galaxies  

NSDL National Science Digital Library

This NASA Science Astrophysics webpage focuses on the formation of galaxies, galaxy shape, and NASA missions. Topics: Big Bang Theory, Dark Energy, Dark Matter, Milky Way, Spiral, Black Hole, Andromeda, Hubble Ultra Deep Field.

1900-01-01

417

NASA Dryden Fact Sheet - Space Shuttles  

NASA Website

Space Shuttles Project Summary Among the most prominent aerospace projects associated with the NASA Dryden Flight Research Center, Edwards, Calif., is the Space Transportation System (STS) ? the space shuttles developed and operated by NASA.

418

2003 NASA Faculty Fellowship Program Research Reports.  

National Technical Information Service (NTIS)

For the 39th consecutive year, the NASA Faculty Fellowship Program (NFFP) was conducted at Marshall Space Flight Center. The program was sponsored by NASA Headquarters, Washington, DC, and operated under contract by The University of Alabama in Huntsville...

G. Karr J. Bland L. M. Freeman S. K. Nash-Stevenson

2004-01-01

419

Dynamic Teachers Re-NEW with NASA  

NSDL National Science Digital Library

NASA's Implementation Plan for Education provides support to in-service educators in the areas of technology and science. Some programs include financial support, while others require district or individual financial contributions. NASA teacher enhancemen

Ashby, Susanne

2001-03-01

420

NASA Space Cryocooler Programs: A 2003 Overview.  

National Technical Information Service (NTIS)

Mechanical cryocoolers represent a significant enabling technology for NASA's Earth and Space Science missions. An overview is presented of ongoing cryocooler activities within NASA in support of current flight projects, near-term flight instruments, and ...

R. G. Ross R. F. Boyle P. Kittel

2004-01-01

421

Webb Mirrors Arrive at NASA Goddard  

NASA Video Gallery

James Webb Space Telescope's secondary mirror, along with a primary mirror segment arrived at NASA's Goddard Space Flight Center in Greenbelt, Md., on Nov. 5, 2012. Credit: NASA's Goddard Space Flight Center > Related story > Download high-res video

Robert Garner

2012-11-27

422

Key Structures Mechanical Issues of the European Space Station and Platform Program Columbus.  

National Technical Information Service (NTIS)

The main technical features of the Columbus space segment: the Attached Pressurized Module (APM), integrated into NASA's Space Station Freedom; the Man Tended Free Flyer (MTFF), Europe's first step into autonomy in space, and the Polar Platform (PPF) are ...

S. Gazey E. Winkelhoff

1989-01-01

423

Power Components for the Space Station 20-Khz Power Distribution System.  

National Technical Information Service (NTIS)

Since 1984, NASA Lewis Research Center was developing high power, high frequency space power components as part of The Space Station Advanced Development program. The purpose of The Advanced Development program was to accelerate existing component program...

D. D. Renz

1988-01-01

424

Keeping the Dream Alive: Managing the Space Station Program, 1982 to 1986.  

National Technical Information Service (NTIS)

The management is described and analyzed of the formative years of the NASA Space Station Program (1982 to 1986), beginning with the successful initiative for program approval by Administrator James M. Beggs through to the decision to bring program manage...

T. J. Lewin V. K. Narayanan

1990-01-01

425

Social Media Accreditation Opens for Next SpaceX Launch to Resupply Space Station  

NASA Website

NASA is inviting social media users to apply for credentials to attend the March 1 launch for the next cargo resupply flight to the International Space Station by Space Exploration Technologies (SpaceX).

426

Development and Technology Transfer of Software Engineering Technology at NASA. Johnson Space Center.  

National Technical Information Service (NTIS)

The United State's big space projects of the next decades, such as Space Station and the Human Exploration Initiative, will need the development of many millions of lines of mission critical software. NASA-Johnson (JSC) is identifying and developing some ...

C. L. Pitman D. M. Erb M. E. Izygon E. M. Fridge G. B. Roush

1992-01-01

427

Concepts and Embodiment Design of a Reentry Recumbent Seating System for the NASA Space Shuttle.  

National Technical Information Service (NTIS)

This report deals with the generation of a recumbent seating system which will be used by NASA to shuttle astronauts from the Russian space station Mir. We begin by examining the necessity for designing a special couch for the returning astronauts. Next, ...

S. Mcmillan B. Looby C. Devany C. Chudej B. Brooks

1993-01-01

428

Actinide Sub-Actinide Flux Ratio Estimated from NASA Challenger Space Shuttle Borne Passive Detector Experiment  

Microsoft Academic Search

A video trace analysis of 117 ultra heavy cosmic nuclei detected by NASA space shuttle borne lexan detectors has been presented here. The major axes of the elliptical track etch pits in the long hour etched detectors have been measured using a Hund microscope computerized for the measurements using a Pentium. The major axes distribution exhibits the existence of ultra

Basudhara Basu; D. P. Bhattacharyya; S. Biswas; D. O'Sullivan; A. Thompson

1998-01-01

429

NASA Offers News Media Access to TDRS-K Spacecraft Jan. 11  

NASA Website

NASA's Tracking and Data Relay Satellite-K (TDRS-K), set to launch this month, will be the focus of a media opportunity at 10 a.m. EST Friday, Jan. 11, at the Astrotech Space Operations facility in Titusville, Fla.

430

NASA Now Minute: MESSENGER in Orbit  

NASA Video Gallery

In this week's NASA Now episode, Dr. Larry Evans, Senior Scientist for MESSENGER, discusses the difficulty of getting to Mercury, the challenges of visiting a planet so close to the sun and what we hope to discover when the spacecraft gets there. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-03-11

431

NASA Space Cryocooler Programs — A 2003 Overview  

Microsoft Academic Search

Mechanical cryocoolers represent a significant enabling technology for NASA’s Earth and Space Science Enterprises. An overview is presented of ongoing cryocooler activities within NASA in support of current flight projects, near-term flight instruments, and long-term technology development. NASA programs in Earth and space science observe a wide range of phenomena, from crop dynamics to stellar birth. Many of the instruments

R. G. Ross; R. F. Boyle; P. Kittel

2004-01-01

432

Solar powered micrometeorite sensors using indoor ambient light for the International Space Station  

Microsoft Academic Search

Sensors for detecting micrometeorite impact locations and magnitudes as well as pressure vessel leaks have been under investigation for some time by the NASA Langley Research Center and other related entities. NASA has been investigating the use of the Distribution Impact Detection System (DIDS) for use on the International Space Station (ISS). However, the DIDS currently requires thionyl chloride lithium

Eric M. Compher; Mool C. Gupta; William C. Wilson; Eric I. Madaras

2011-01-01

433

Fluid physics and transport phenomena studies aboard the international space station: Planned experiments  

Microsoft Academic Search

This paper provides an overview of the microgravity fluid physics and transport phenomena experiments planned for the International Space Station. NASA's Office of Life and Microgravity Science and Applications has established a world-class research program in fluid physics and transport phenomena. This program combines the vast expertise of the world research community with NASA's unique microgravity facilities with the objectives

Bhim S. Singh

1999-01-01

434

Satellite tracking system analysis through computer simulation  

Microsoft Academic Search

An outline of the Satellite Orbit Determination Program (SORD-II), developed at Yokosuka Electrical Communication Laboratory, is presented. This program uses the general perturbation theory proposed by Kozai (1959) and the weighted least squares method. Through computer simulation, it is confirmed that the program works satisfactorily. At the same time, several conclusions are reached about tracking station disposition conditions and tracking

Y. Nagai

1977-01-01

435

NASA's Deep Impact Spacecraft Images Comet ISON  

NASA Video Gallery

This series of images of comet C/2012 S1 (ISON) was taken by the Medium-Resolution Imager of NASA’s Deep Impact spacecraft over a 36-hour period on Jan. 17 and 18, 2013. At the time, the spacecraft was 493 million miles (793 million kilometers) from the comet. Image credit: NASA/JPL-Caltech/UMD › Asteroid and Comet Watch site

Anthony Greicius

2013-02-05

436

NASA - Liftoff to Learning: "Let's Talk Robotics"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

437

NASA Access Mechanism: Lessons Learned Document.  

National Technical Information Service (NTIS)

The six-month beta test of the NASA Access Mechanism (NAM) prototype was completed on June 30, 1993. This report documents the lessons learned from the use of this Graphical User Interface to NASA databases such as the NASA STI Database, outside databases...

L. Burdick R. Dunbar D. Duncan C. Generous J. Hunter

1994-01-01

438

NASA - Liftoff to Learning: "Space Basics"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

439

NASA eClips™: Exercise Equipment  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

440

NASA eClips™: Centripetal Force  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

441

NASA eClips™: Exercise in Space  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

442

NASA Television Media Channel on UStream  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

443

NASA eClips™: Fluid Shift  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

444

NASA Advisory Council - Information Technology Infrastructure Committee  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

445

NASA eClips™: Cloud Inspection  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

446

NASA Television Educational Channel on UStream  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

447

NASA - Liftoff to Learning: "Go for EVA"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

448

NASA eClips™: Data Loggers  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

449

NASA CONNECT™: "Doing More in Less"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

450

NASA eClips™: Flight Test Articles  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

451

NASA CONNECT™: "Proportionality: Modeling the Future"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

452

NASA - Liftoff to Learning: "Plants in Space"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

453

NASA's Destination Tomorrow™: Program 2 (2000 - 2001)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

454

NASA Television in High Definition on UStream  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

455

NASA CONNECT™: "Venus Transit" (2003-2004)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

456

NASA's Destination Tomorrow™: Program 7 (2002 - 2003)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

457

NASA Vision, Volume 1, No. 4.  

National Technical Information Service (NTIS)

Contents in this newsletter include the following: Honor award ceremony. NASA robotic geologist named Spirit began its seven-month journey to Mars. Around the Centers. NASA web site wins Webby Award. Global garden. Grows greener. NASA newest UAV makes suc...

2003-01-01

458

NASA Now Minute: Engineering: Friction Stir Welding  

NASA Video Gallery

Shane Brooke, welding engineer at Marshall Space Flight Center in Huntsville, Ala., discusses friction stir welding and its use in the engineering of spacecraft. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2013-01-30

459

NASA's Destination Tomorrow™: Program 11 (2003 - 2004)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

460

NASA Now Minute: EARTH DAY -- Smog Blogger  

NASA Video Gallery

Dr. Raymond Hoff defines smog and describes how it affects the quality of the air we breathe. Learn how to find the amount of air pollution on any given day where you live. NASA Now Minutes are excerpts from a weekly current events program available for classroom use at the NASA Explorer Schools Virtual Campus located at: › http://explorerschools.nasa.gov.

Heather Deiss

2011-04-25

461

NASA - "Explorer Generation Music Video" (2003)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

462

NASA's Destination Tomorrow™: Program 21 (2005)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

463

Modeling Guru: Knowledge Base for NASA Modelers  

Microsoft Academic Search

Modeling Guru is an on-line knowledge-sharing resource for anyone involved with or interested in NASA's scientific models or High End Computing (HEC) systems. Developed and maintained by the NASA's Software Integration and Visualization Office (SIVO) and the NASA Center for Computational Sciences (NCCS), Modeling Guru's combined forums and knowledge base for research and collaboration is becoming a repository for the

M. S. Seablom; G. S. Wojcik; B. H. van Aartsen

2009-01-01

464

NASA advanced cryocooler technology development program  

Microsoft Academic Search

Mechanical cryocoolers represent a significant enabling technology for NASA's Earth and Space Science Enterprises. Over the years, NASA has developed new cryocooler technologies for a wide variety of space missions. Recent achievements include the NCS, AIRS, TES and HIRDLS cryocoolers, and miniature pulse tube coolers at TRW and Lockheed Martin. The largest technology push within NASA right now is in

Daniel R. Coulter; Ronald G. Ross Jr.; Robert F. Boyle; R. W. Key

2003-01-01

465

NASA Space Cryocooler Programs - A 2003 Overview  

Microsoft Academic Search

Mechanical cryocoolers represent a significant enabling technology for NASA's Earth and Space Science Enterprises. An overview is presented of ongoing cryocooler activities within NASA in support of current flight projects, near-term flight instruments, and long-term technology development. NASA programs in Earth and space science observe a wide range of phenomena, from crop dynamics to stellar birth. Many of the instruments

R. G. Ross; R. F. Boyle; P. Kittel

2004-01-01

466

NASA - Liftoff to Learning: "All Systems Go!"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

467

NASA's Destination Tomorrow™: Program 15 (2004)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

468

NASA's Destination Tomorrow™: Program 8 (2002 - 2003)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

469

NASA's Destination Tomorrow™: Program 4 (2000 - 2001)  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

470

NASA Web Privacy Policy and Important Notices  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

471

NASA - Liftoff to Learning: "Newton in Space"  

NASA Website

NASA.gov brings you images, videos and interactive features from the unique perspective of America's space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our ...

472

14 CFR 1240.105 - Special initial awards-NASA and NASA contractor employees.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Special initial awards-NASA and NASA contractor employees. 1240.105 Section 1240.105...Contributions § 1240.105 Special initial awardsâNASA and NASA contractor employees. (a) Patent...

2013-01-01

473

The ESA Space Station programme plans  

NASA Astrophysics Data System (ADS)

The U.S. offer for international cooperation in the Space Station program is discussed from the European Space Agency (ESA) point of view. A Long Term Preparatory Program, entrusted to ESA and concentrating on future European launchers beyond Ariane 4 and the build-up of a European In-Orbit Infrastructure, has given major emphasis to a nearer-term goal to prepare for a European participation in the U.S. Space Station program concerning pressurized modules and co-orbiting platforms. Activities are also under way in Europe to prepare for a Space Station program based on the Columbus program approved by ESA Council and which includes space and ground segments, payloads, and demo missions. A Space Station phase B agreement between NASA and ESA which defines the mutual relationships and mechanisms for coordination and exchange of information during phase B is under preparation.

Bignier, M.; Peters, G.; Altmann, G.

1984-10-01

474

Technology development: Future use of NASA's large format camera is uncertain  

NASA Astrophysics Data System (ADS)

The Large Format Camera, developed as a project to verify an engineering concept or design, has been flown only once, in 1984, on the shuttle Challenger. Since this flight, the camera has been in storage. NASA had expected that, following the camera's successful demonstration, other government agencies or private companies with special interests in photographic applications would absorb the costs for further flights using the Large Format Camera. But, because shuttle transportation costs for the Large Format Camera were estimated to be approximately $20 million (in 1987 dollars) per flight and the market for selling Large Format Camera products was limited, NASA was not successful in interesting other agencies or private companies in paying the costs. Using the camera on the space station does not appear to be a realistic alternative. Using the camera aboard NASA's Earth Resources Research (ER-2) aircraft may be feasible. Until the final disposition of the camera is decided, NASA has taken actions to protect it from environmental deterioration. The Government Accounting Office (GAO) recommends that the NASA Administrator should consider, first, using the camera on an aircraft such as the ER-2. NASA plans to solicit the private sector for expressions of interest in such use of the camera, at no cost to the government, and will be guided by the private sector response. Second, GAO recommends that if aircraft use is determined to be infeasible, NASA should consider transferring the camera to a museum, such as the National Air and Space Museum.

Rey, Charles F.; Fliegel, Ilene H.; Rohner, Karl A.

1990-06-01

475

Space Station - The Orbital Maneuvering Vehicle  

NASA Astrophysics Data System (ADS)

NASA's Orbital Maneuvering Vehicle (OMV) will augment Space Shuttle operations by retrieving and replacing satellites while expending far less propellant than the heavier manned vehicle would require. At the Space Station, the OMV will ferry logistics modules to and from the Shuttle's orbit some 130 n.m. below, deploy and dock OTVs, assemble modules, and retrieve satellites for servicing; it will then proceed to redeploy the satellites. OMV operations will be controlled either from the Shuttle or from a ground station, via video monitors.

Stephenson, Arthur G.

1988-11-01

476

Astrometry of Comets at USNO Flagstaff Station  

Microsoft Academic Search

The optical astrometry group at the Flagstaff Station of the US Naval Observatory has, since 1994, provided astrometric positions to NASA\\/JPL for a series of comets that were targets of various space missions. Among these have been Shoemaker-Levy 9, Wild 2, Schwassman-Wachmann 3, and Tempel 1. All astrometry has been done with meter-class or smaller telescopes, equipped with single-chip CCD

A. K. B. Monet; R. C. Stone; H. C. Harris; T. Tilleman; D. G. Monet; S. E. Levine; B. Canzian

2005-01-01

477

Ultra-wideband two-cluster tracking system design with angle of arrival algorithm  

Microsoft Academic Search

This paper describes a design effort for a prototype ultra-wideband (UWB) tracking system that is currently under development at NASA Johnson Space Center (JSC). The system is being studied for use in tracking of lunar\\/Mars rovers during early exploration missions when satellite navigation systems are not available. The UWB technology is exploited to implement the tracking system due to its

J. Ni; D. Arndt; P. Ngo; C. Phan; J. Gross

2006-01-01

478

NASA Space Science Resource Catalog  

NASA Astrophysics Data System (ADS)

The NASA Office of Space Science Resource Catalog provides a convenient online interface for finding space science products for use in classrooms, science museums, planetariums, and many other venues. Goals in developing this catalog are: (1) create a cataloging system for all NASA OSS education products, (2) develop a system for characterizing education products which is meaningful to a large clientele, (3) develop a mechanism for evaluating products, (4) provide a user-friendly interface to search and access the data, and (5) provide standardized metadata and interfaces to other cataloging and library systems. The first version of the catalog is being tested at the spring 2000 conventions of the National Science Teachers Association (NSTA) and the National Council of Teachers of Mathematics (NCTM) and will be released in summer 2000. The catalog may be viewed at the Origins Education Forum booth.

Teays, T.

2000-05-01

479

NASA Earth Observatory: Natural Hazards  

NSDL National Science Digital Library

The purpose of NASA's Earth Observatory is to provide a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The specific focus of this Earth Observatory website is natural hazards. Earth scientists around the world use NASA satellite imagery to better understand the causes and effects of natural hazards. The goal in sharing these images is to help people visualize where and when natural hazards occur, and to help mitigate their effects. Natural hazards that are emphasized include dust and smoke, wildfires, floods, severe storms, and volcanoes. In addition, each week the site highlights major natural hazard events occurring around the globe. Links to satellite imagery and informational text concerning the natural hazard and image interpretation are included. The site also offers a link to unique imagery, such as earthquakes, droughts, and landslides, and features the latest unique imagery events around the globe.

480

Understanding the Heliospheric Environment for NASA's Spacefleet  

NASA Astrophysics Data System (ADS)

Presently the U S National Aeronautics and Space Administration has more than 50 active robotic science satellites seven active communications satellites and the manned International Space Station With this investment NASA has a responsibility to protect its space assets throughout the solar system For humans this function is performed by the Space Radiation Analysis Group at Johnson Space Center in Houston Texas But for robotic explorers this function is performed only on an ad hoc basis Space environmental awareness is missing for much of the existing fleet beyond Earth-orbit and it is required for anomaly resolution and good stewardship of our national assets Engineers require this information to make a complete assessment of the root cause of operational anomalies Threats to space assets arise from many sources on a wide range of timescales direct effects of radiation and energetic particles on robotic and human explorers indirect and delayed effects on the heliosphere e g MHD shocks on planetary magnetospheres e g transient radiation belts and on atmospheres e g aerobraking and long term solar cycle predictions Because environmental assessment throughout the heliosphere is not yet operational it requires interpretation of data heterogeneous in form and quality groundbased and spacebased as well as interaction with sophisticated numerical models A conceptual study of environmental conditions was done on an ad hoc basis for a failure at Mars in 2004 Here we will describe recent efforts and discuss near-term plans at

St. Cyr, O. C.; Thompson, B. J.; Rowland, D. E.; Hesse, M.

481

NASA long duration balloon capability development project  

NASA Astrophysics Data System (ADS)

The potential benefits of a Long Duration Balloon (LDB) capability have long been recognized and some modest efforts have previously been undertaken by the National Center for Atmospheric Research (NCAR), the National Scientific Balloon Facility (NSBF), et. al., going back to the late 1960's. In 1988, the National Aeronautics and Space Administration (NASA) made a decision to dedicate significant resources toward this effort and a technical and management approach was established. The objective of the project is to develop a near global LDB capability for both Antarctic and mid-latitude applications, including the required telecommunications, navigation and positioning, power, data processing and control systems necessary to conduct flights of scientific experiments weighing 1500 pounds or more on conventional balloons for periods of up to three weeks. The first operational use of the new capability is planned in support of Solar Max experiments in Antarctica during the 1991-1992 austral summer. Development of the Antarctica support system configuration has been initiated and the first test flight was conducted from McMurdo Station in December 1989 - January 1990. The progress, status and future plans for development of the new LDB capability will be discussed.

Stuchlik, D.; Craddock, W.

1993-02-01

482

The NASA high temperature superconductivity program  

NASA Astrophysics Data System (ADS)

It has been recognized from the onset that high temperature superconductivity held great promise for major advances across a broad range of NASA interests. The current effort is organized around four key areas: communications and data, sensors and cryogenics, propulsion and power, and space materials technology. Recently, laser ablated YBa2Cu3O(7-x) films on LaAIO produced far superior RF characteristics when compared to metallic films on the same substrate. This achievement has enabled a number of unique microwave device applications, such as low insertion loss phase shifters and high Q filters. Melt texturing and melt quenched techniques are being used to produce bulk materials with optimized magnetic properties. These yttrium enriched materials possess enhanced flux pinning characteristics and will lead to prototype cryocooler bearings. Significant progress has also occurred in bolometer and current lead technology. Studies are being conducted to evaluate the effect of high temperature superconducting materials on the performance and life of high power magneto-plasma-dynamic thrusters. Extended studies were also performed to evaluate the benefit of superconducting magnetic energy storage for LEO space station, lunar and Mars mission applications. The project direction and level of effort of the program are also described.

Sokoloski, Martin M.; Romanofsky, Robert R.

1990-04-01

483

Science@NASA: Headline News  

NSDL National Science Digital Library

This site features news articles and features that highlight research from NASA's current space missions. The home page provides links to current headline stories and recent stories on space science, astronomy, living in space, Earth science, physical and biological sciences, and advances in technology. The stories are available as podcasts, which can be downloaded or played from the web site, and as illustrated transcripts (text). There is also an archive of stories dating back to 1996.

484

Nasa Explains Dust Bowl Drought  

NSDL National Science Digital Library

Using a computer model developed with modern-era satellite data, NASA scientists provide an explanation for one of the worst climatic events in the history of the United States, the "Dust Bowl" drought, which devastated the Great Plains and all but dried up an already depressed American economy in the 1930's. Videos and simulations support the study findings and provide foundation for classroom discussion regarding future impact on climate.

2008-02-23

485

Animal Tracks  

NSDL National Science Digital Library

For those of us living in Northern climates, when winter snow covers the landscape it provides great conditions to search for animal tracks. The following websites provide an abundance of information and resources about the ancient art of animal tracking.The first site(1 ), Beartracker's Animal Tracks Den, is an excellent comprehensive "online field guide to tracks and tracking." The site includes animal track images, photos, as well as information about mammals, reptiles, birds, insects, amphibians, and other tracking resources. The second site (2), is an article by Jon C. Boren, Extension Wildlife Specialist and Byron D. Wright, Agricultural Specialist both from the University of New Mexico entitled Identifying and Preserving Wildlife Tracks. The third site (3), on Tracking and Stalking Wildlife, comes from The Virtual Cub Scout Leader's Handbook and provides short information pages on a variety on animals including photos and images of tracks. The fourth site (4) is a well-organized lesson plan with activities on Animal Signs from Eagle Bluff Environmental Learning Center. The fifth site (5) is the Outdoor Action Guide to Animal Tracking by Rick Curtis of Princeton University. This website provides solid and detailed information on many aspects of animal tracking including parts of a track, pattern classification, aging tracks, and more. The sixth site (6) is an article by veteran tracker Jim Halfpenny, Ph.D. about how to determine the accurate track size for an animal. Site visitors can link from this article to the homepage for A Naturalist's World which has information about tracking classes offered in various North American locations. For anyone interested in developing their animal tracking skills, the final two websites also offer courses from very experienced trackers in different regions of North America. The seventh site (7), Tom Brown's Tracker School is the largest school of its kind with locations in New Jersey, California, and Florida. The eighth site, (8) Wilderness Awareness School is located in Washington but offers courses in other regions as well. This website also provides an extensive list of links for many other tracking resources.

486

Satellite laser station Helwan status 1992  

NASA Astrophysics Data System (ADS)

The Satellite Laser Station Helwan has been operated jointly by the National Research Institute of Astronomy and Geophysics in Helwan, Egypt and the Czech Technical University in Prague, Czechslovakia. The station components have been carefully tuned to increase the systems overall stability and reliability critical for the remote location. The mount correction model based on the Gaussian smoothing has been implemented to simplify the blind satellite acquisition and tracking. The on-site normal points generation algorithm has been implemented, the station has been connected to the international information network. The ERS-1 satellite has been included into the tracking schedule. The station range capability has been verified by experimental Etalon 1 ranging by April 1992. The ranging precision of 2-3 centimeters is obtained when ranging to ERS-1, Starlette, and Lageos satellites.

Cech, M.; Hamal, Karel; Jelinkova, Helena; Novotny, Antonin; Prochazka, Ivan; Baghos, B. B.; Helali, Y.; Tawadros, M. J.

1993-06-01

487

Sierra Nevada Honors NASA HL-20 Engineers  

NASA Video Gallery

NASA's Commercial Crew and Cargo Program is investing financial and technical resources to stimulate efforts within the private sector to develop and demonstrate safe, reliable, and cost-effective space transportation capabilities.Sierra Nevada Corporation (SNC) is partnering with NASA to advance the development of a commercial crew space transportation system as part of the Commercial Crew Development (CCDev) program.The Dream Chaser is based on NASA’s HL-20 lifting body design pioneered by engineers at NASA's Langley Research Center in Hampton, Va.

Robert Allen

2011-06-23

488

Sky Station  

NSDL National Science Digital Library

While satellites are the current backbone of telecommunications and wireless infrastructure, the company that maintains this Web site envisions a completely new technology. The Stratospheric Telecommunications Service (STS) relies on "lighter-than-air platforms which are held in a geo-stationary position in the stratosphere (approximately 21Km) over a major metropolitan area." The Sky Station company documents much of the STS theory online, as well as maintaining news and information articles about the progress of the system's development. US and international organizations have already reserved some of the radio frequency spectrum for stratospheric platforms, and it seems to have considerable support from important agencies.

1997-01-01

489

Orbit determination error analysis for satellite-satellite\\/ground tracking systems  

Microsoft Academic Search

A statistical error analysis was made for the orbit determination process, where the observations from ground stations and\\/or from some orbiting spacecrafts, employed for tracking, are used. The various errors included in the analysis are errors in the tracking systems, uncertainty in the orbit model, inaccuracies of the ground station coordinates, and errors in the orbital elements of the tracking

C. K. Rajasingh

1977-01-01

490

Locating Strategies for Personal Communication Networks: A Novel Tracking Strategy  

Microsoft Academic Search

The partition of location areas is designed to mini- mize the total costs of finding users' location and tracking their movement in personal communication networks (PCN's). A new scheme to partition and track mobile users and its implementa- tion based on cellular architecture are proposed. According to the tracking strategy, the mobile station (MS) transmits only update messages at specific

Anna Hac; Xian Zhou

1997-01-01

491

Exoplanet Science from NASA’s Kepler Mission  

SciTech Connect

NASA's exoplanet mission is the world's premier instrument for the discovery and study of planets orbiting distant stars. As the nominal mission comes to a close, Kepler has discovered nearly 2500 planet candidates, confirmed dozens of multi-planet systems, provided important insights into the orbital architectures of planetary systems, identified specific systems that challenge theories of planet formation and dynamical evolution, has revolutionized our understanding of stellar interiors, and is gearing to measure the frequency of Earth-like planets in the habitable zones of Sun-like stars in its extended mission phase. I present the most recent results from the Kepler mission.

Steffen, Jason [Northwestern University

2012-09-12

492

19. MUELLER FIRE HYDRANT NEAR LAUNCHING PAD IN STATION "0". ...  

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

19. MUELLER FIRE HYDRANT NEAR LAUNCHING PAD IN STATION "0". - Edwards Air Force Base, South Base Sled Track, Edwards Air Force Base, North of Avenue B, between 100th & 140th Streets East, Lancaster, Los Angeles County, CA

493

14. Mark A. Bookspan, photographer AMTRAK STATION SERVICES OFFICE IN ...  

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

14. Mark A. Bookspan, photographer AMTRAK STATION SERVICES OFFICE IN TRAIN CONCOURSE, LOOKING EAST - Los Angeles Union Passenger Terminal, Tracks & Shed, 800 North Alameda Street, Los Angeles, Los Angeles County, CA

494

15. Everett Weinreb, photographer AMTRAK STATION SERVICES OFFICE IN TRAIN ...  

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

15. Everett Weinreb, photographer AMTRAK STATION SERVICES OFFICE IN TRAIN CONCOURSE, LOOKING NORTHEAST - Los Angeles Union Passenger Terminal, Tracks & Shed, 800 North Alameda Street, Los Angeles, Los Angeles County, CA

495

16. Everett Weinreb, photographer AMTRAK STATION SERVICES OFFICE IN TRAIN ...  

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

16. Everett Weinreb, photographer AMTRAK STATION SERVICES OFFICE IN TRAIN CONCOURSE, LOOKING NORTH - Los Angeles Union Passenger Terminal, Tracks & Shed, 800 North Alameda Street, Los Angeles, Los Angeles County, CA

496

Beyond Tracking.  

ERIC Educational Resources Information Center

On the surface, educational tracking may seem like a useful tool for allowing students to work at their own pace, and to avoid discouraging competition, but abuses of the tracking idea have arisen through biased placement practices that have denied equal access to education for minority students. The articles in this issue explore a number of…

Bates, Percy; And Others

1992-01-01

497

NASA laser remote sensing program  

NASA Astrophysics Data System (ADS)

Some of the major NASA programs using laser remote sensing techniques are summarized, with emphasis on the development of the Lidar In-space Technology Experiment and the Lidar Atmospheric Sensing Experiment. Insight is provided into the technology being developed for future experiments, primarily wavelength extension into the middle IR range of the spectrum, 3 to 5 microns, and for wind sensing and DIAL measurements. New metrology technology which will lead to improvement measurements for both earth sciences and space physics is discussed. Some of the developments in systems and technology for applications in aviation safety, microburst detection, clear air turbulence, and wave vortex detection are highlighted.

Allario, Frank; Miller, William E.; Staton, Leo; Sokoloski, Martin M.

1992-12-01

498

Overview of NASA's UEET Program  

NASA Astrophysics Data System (ADS)

This paper presents a general overview of NASA's Ultra Efficient Engine Technology (UEET) Program. The program's vision is to develop and hand off revolutionary turbine engine propulsion technologies that will enable future generation vehicles over a wide range of flight speeds. The specific goals include: 1) Perform propulsion technologies to enable increases in system efficiency and, therefore, fuel burn reductions of up to 15% (equivalent reductions in CO2); and 2) Provide combustor technologies (configuration and materials) which will enable reductions in Landing/Take-off (LTO) NOx of 70% relative to 1996 ICAO standards.

Shaw, Robert J.

2002-10-01

499

Fast Track Lunar NTR Systems Assessment for the First Lunar Outpost and Its Evolvability to Mars.  

National Technical Information Service (NTIS)

The objectives of the 'fast track' lunar Nuclear Thermal Rocket (NTR) analysis are to quantify necessary engine/stage characteristics to perform NASA's 'First Lunar Outpost' scenario and to assess the potential for evolution to Mars mission applications. ...

S. K. Borowski S. W. Alexander

1992-01-01

500

An overview of reliability growth models and their potential use for NASA applications  

NASA Astrophysics Data System (ADS)

An overview is provided of reliability growth literature over the past 25 years. This includes a thorough literature review of different areas of the application of reliability growth such as design, prediction, tracking/management, and demonstration. Various reliability growth models use different bases on how they characterize growth. Different models are discussed. Also, the use is addressed of reliability growth models to NASA applications. This includes the application of these models to the space shuttle main engine. For potential NASA applications, we classify growth models in two groups, which are characterized.

Taneja, V. S.; Safie, F. M.

1992-12-01