Science.gov

Sample records for missile relays subjected

  1. The Effectiveness of the U.S. Missile Defense Capabilities as a Deterrent to the North Korean Missile Threat

    DTIC Science & Technology

    2007-12-01

    THE U.S. MISSILE DEFENSE CAPABILITIES AS A DETERRENT TO THE NORTH KOREAN MISSILE THREAT by Issac G. Gipson December 2007 Thesis Advisor...SUBJECT TERMS Missile Deterrence, Missile Defense , North Korean Missile Threat, North Korean Missile Systems, U.S. Missile Defense Capabilities, 16...19 III. CURRENT MISSILE DEFENSE ANALYSIS AGAINST NORTH KOREAN MISSILE THREAT

  2. A laboratory study of subjective response to sonic booms measured at White Sands Missile Range

    NASA Technical Reports Server (NTRS)

    Sullivan, Brenda M.; Leatherwood, Jack D.

    1993-01-01

    The Sonic Boom Simulator of the Langley Research Center was used to quantify subjective loudness response to boom signatures consisting of: (1) simulator reproductions of booms recently recorded at White Sands Missile Range; (2) idealized N-waves; and (3) idealized booms having intermediate shocks. The booms with intermediate shocks represented signatures derived from CFD predictions. The recorded booms represented those generated by F15 and T38 aircraft flyovers and represented a variety of waveforms reflecting the effects of propagation through a turbulent atmosphere. These waveforms included the following shape categories: N-waves, peaked, rounded, and U-shaped. Results showed that Perceived Level and Zwicker Loudness Level were good estimators of the loudness of turbulence modified sonic booms. No significant differences were observed between loudness responses for the several shape categories when expressed in terms of Perceived Level. Thus, Perceived Level effectively accounted for waveform differences due to turbulence. Idealized booms with intermediate shocks, however, were rated as being approximately 2.7 dB(PL) less loud than the recorded signatures. This difference was not accounted for by PL.

  3. Redstone Missile

    NASA Technical Reports Server (NTRS)

    2004-01-01

    The image depicts Redstone missile being erected. The Redstone ballistic missile was a high-accuracy, liquid-propelled, surface-to-surface missile developed by Army Ballistic Missile Agency, Redstone Arsenal, in Huntsville, Alabama, under the direction of Dr. von Braun. The Redstone engine was a modified and improved version of the Air Force's Navaho cruise missile engine of the late forties. The A-series, as this would be known, utilized a cylindrical combustion chamber as compared with the bulky, spherical V-2 chamber. By 1951, the Army was moving rapidly toward the design of the Redstone missile, and the production was begun in 1952. Redstone rockets became the 'reliable workhorse' for America's early space program. As an example of the versatility, Redstone was utilized in the booster for Explorer 1, the first American satellite, with no major changes to the engine or missile

  4. Ballistic Missile Trajectory Estimation

    DTIC Science & Technology

    2006-12-01

    determination that has enough merit to be called accurate. 15. NUMBER OF PAGES 77 14. SUBJECT TERMS Telescope , Orbit Determination, Missile...rate. Sensor measurements are commensurate with current values of telescopes and laser ranging devices. Further investigated was the use of two...Highly Eccentric Orbits Using a Raven Telescope , Master’s Thesis, Naval Post Graduate School, Monterey, California, September 2005 2 K.C. Hill, C

  5. China's ballistic missile program

    NASA Astrophysics Data System (ADS)

    Weder, M.

    1982-04-01

    Progress in China's development of ballistic missiles and satellite launching rockets is discussed. Historical background material is provided and several missiles are described. The missile program plans are discussed and an evaluation of China's nuclear capabilities is given.

  6. Missile Aerodynamics

    DTIC Science & Technology

    1979-02-01

    4 HIGH-ANGLE-OF-ATTACK MISSILE AERODYNAMICS by A.B.Wardlaw, Jr ECOULEMENTS DE CU LOT par i.Delery et M.Sirieix 6 THE CONTROL OF GUIDED WEAPONS by...in Figure 3, or the bomblet shown in Figure 4 . It must be conceded that the weapon aero- dynamicist does not usually have to concern himself with the...conveniently divided into the four categories shown in Figure 5: I Unguided and unpropelled. 2 Unguided and propelled. 3 Guided and unpropelled. 4 Guided

  7. 32. View of relay assembly group and interconnecting group electronic ...

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

    32. View of relay assembly group and interconnecting group electronic modules located on second floor of transmitter building no. 102 in MIP area. - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

  8. Seismic ruggedness of relays

    SciTech Connect

    Merz, K.L. )

    1991-08-01

    This report complements EPRI report NP-5223 Revision 1, February 1991, and presents additional information and analyses concerning generic seismic ruggedness of power plant relays. Existing and new test data have been used to construct Generic Equipment Ruggedness Spectra (GERS) which can be used in identifying rugged relays during seismic re-evaluation of nuclear power plants. This document is an EPRI tier 1 report. The results of relay fragility tests for both old and new relays are included in an EPRI tier 2 report with the same title. In addition to the presentation of relay GERS, the tier 2 report addresses the applicability of GERS to relays of older vintage, discusses the important identifying nomenclature for each relay type, and examines relay adjustment effects on seismic ruggedness. 9 refs., 3 figs, 1 tab.

  9. Recovering Energy From Relays

    NASA Technical Reports Server (NTRS)

    Mclyman, C. W.

    1985-01-01

    Magnetic energy stored in relay recovered with aid of simple circuit. Circuit recovers more than 20 percent of energy stored in relay winding and returns it to powerline. New three-transistor driver circuit requires no additional winding.

  10. Innovation and tactical missiles

    NASA Astrophysics Data System (ADS)

    Comon, J. P.

    Examples of design developments of tactical missiles are given to illustrate the contribution of new ideas to the improvement of military missiles. These developments include placing forward the propulsion section of antitank missiles to improve efficiency by automatically providing a standoff distance; the modification of the Exocet antiship missile to a Mach 2 velocity; an improved guiding system and a main propulsion assured by ramjet engine; and an antimissile missile with a very short reaction time combining rocket engine and aerodynamic forces to provide a high precision guiding system. The design and test facilities required are also discussed.

  11. Attacking the Theater Mobile Ballistic Missile Threat

    DTIC Science & Technology

    1993-06-01

    and Record, �Theater Ballistic Missile Defense and US Contingency Operations,� 13. 43Greg Myre, Associated Press, �De Klerk Reveals South African...possession). ____. Briefing, subject: �WarBreaker.� 17 December 1992. Myre, Greg. Associated Press. �De Klerk Reveals South African Nuclear...April�3 May 1992, 1,44. Ordway, Frederick I. III and Ronald C. Wakeford. International Missile and Spacecraft Guide. New York: McGraw

  12. Performance limitations of relay neurons.

    PubMed

    Agarwal, Rahul; Sarma, Sridevi V

    2012-01-01

    Relay cells are prevalent throughout sensory systems and receive two types of inputs: driving and modulating. The driving input contains receptive field properties that must be transmitted while the modulating input alters the specifics of transmission. For example, the visual thalamus contains relay neurons that receive driving inputs from the retina that encode a visual image, and modulating inputs from reticular activating system and layer 6 of visual cortex that control what aspects of the image will be relayed back to visual cortex for perception. What gets relayed depends on several factors such as attentional demands and a subject's goals. In this paper, we analyze a biophysical based model of a relay cell and use systems theoretic tools to construct analytic bounds on how well the cell transmits a driving input as a function of the neuron's electrophysiological properties, the modulating input, and the driving signal parameters. We assume that the modulating input belongs to a class of sinusoidal signals and that the driving input is an irregular train of pulses with inter-pulse intervals obeying an exponential distribution. Our analysis applies to any [Formula: see text] order model as long as the neuron does not spike without a driving input pulse and exhibits a refractory period. Our bounds on relay reliability contain performance obtained through simulation of a second and third order model, and suggest, for instance, that if the frequency of the modulating input increases or the DC offset decreases, then relay increases. Our analysis also shows, for the first time, how the biophysical properties of the neuron (e.g. ion channel dynamics) define the oscillatory patterns needed in the modulating input for appropriately timed relay of sensory information. In our discussion, we describe how our bounds predict experimentally observed neural activity in the basal ganglia in (i) health, (ii) in Parkinson's disease (PD), and (iii) in PD during therapeutic deep

  13. High Energy Missile Project

    DTIC Science & Technology

    2004-12-01

    hypervelocity missile concept has been investigated. This research and development project called High Energy Missile (HEMi) technology...currently valid OMB control number. 1. REPORT DATE 00 DEC 2004 2. REPORT TYPE N/A 3. DATES COVERED - 4. TITLE AND SUBTITLE High Energy

  14. VIEW OF SECOND LEVEL OF MISSILE LAB WITH MISSILE TUBE ...

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

    VIEW OF SECOND LEVEL OF MISSILE LAB WITH MISSILE TUBE WITH HATCH ON LEFT AND CONTROL PANEL ON RIGHT. VIEW FACING SOUTHEAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  15. That Article: Frame Relay.

    ERIC Educational Resources Information Center

    Schuyler, Michael

    1994-01-01

    Compares Frame Relay with digital and analog alternatives for connecting sites on a Wide Area Network. Cost considerations, the concepts on which the technology is based, its carrying capacity, the use of CD-ROM and Graphical User Interface (GUI) on Frame Relay, and engineering bandwidth limitations are covered. (KRN)

  16. That Article: Frame Relay.

    ERIC Educational Resources Information Center

    Schuyler, Michael

    1994-01-01

    Compares Frame Relay with digital and analog alternatives for connecting sites on a Wide Area Network. Cost considerations, the concepts on which the technology is based, its carrying capacity, the use of CD-ROM and Graphical User Interface (GUI) on Frame Relay, and engineering bandwidth limitations are covered. (KRN)

  17. MAVEN Relay Operations Concept

    NASA Technical Reports Server (NTRS)

    Chamberlain, Neil; Gladden, Roy; Bruvold, Kris

    2012-01-01

    The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission will launch in late 2013 and following a 10 month cruise to Mars, will study the upper atmosphere of the planet. In addition to the science instruments, the MAVEN spacecraft is equipped with an Electra UHF transceiver to support relay communication with landed assets. This paper describes how UHF relay service is provisioned by MAVEN. The discussion includes a description of the Electra payload, the process by which relay activities are coordinated and accounted for, the process of a typical relay session, including uplink and downlink, as well as special commands to calibrate and verify relay performance. The operational processes for providing these services are inherited largely from prior Mars missions and take advantage of existing infrastructure and lessons learned from those missions. Preliminary data volume return capabilities using adaptive data rates and low-density parity check channel coding are presented.

  18. Relay Sequence Generation Software

    NASA Technical Reports Server (NTRS)

    Gladden, Roy E.; Khanampompan, Teerapat

    2009-01-01

    Due to thermal and electromagnetic interactivity between the UHF (ultrahigh frequency) radio onboard the Mars Reconnaissance Orbiter (MRO), which performs relay sessions with the Martian landers, and the remainder of the MRO payloads, it is required to integrate and de-conflict relay sessions with the MRO science plan. The MRO relay SASF/PTF (spacecraft activity sequence file/ payload target file) generation software facilitates this process by generating a PTF that is needed to integrate the periods of time during which MRO supports relay activities with the rest of the MRO science plans. The software also generates the needed command products that initiate the relay sessions, some features of which are provided by the lander team, some are managed by MRO internally, and some being derived.

  19. Missile sizing for ascent-phase intercept

    SciTech Connect

    Hull, D.G.; Salguero, D.E.

    1994-11-01

    A computer code has been developed to determine the size of a ground-launched, multistage missile which can intercept a theater ballistic missile before it leaves the atmosphere. Typical final conditions for the inteceptor are 450 km range, 60 km altitude, and 80 sec flight time. Given the payload mass (35 kg), which includes a kinetic kill vehicle, and achievable values for the stage mass fractions (0.85), the stage specific impulses (290 sec), and the vehicle density (60 lb/ft{sup 3}), the launch mass is minimized with respect to the stage payload mass ratios, the stage burn times, and the missile angle of attack history subject to limits on the angle of attack (10 deg), the dynamic pressure (60,000 psf), and the maneuver load (200,000 psf deg). For a conical body, the minimum launch mass is approximately 1900 kg. The missile has three stages, and the payload coasts for 57 sec. A trade study has been performed by varying the flight time, the range, and the dynamic pressure Emits. With the results of a sizing study for a 70 lb payload and q{sub max} = 35,000 psf, a more detailed design has been carried out to determine heat shield mass, tabular aerodynamics, and altitude dependent thrust. The resulting missile has approximately 100 km less range than the sizing program predicted primarily because of the additional mass required for heat protection. On the other hand, launching the same missile from an aircraft increases its range by approximately 100 km. Sizing the interceptor for air launch with the same final conditions as the ground-launched missile reduces its launch mass to approximately 1000 kg.

  20. Multifunction protective relay

    NASA Astrophysics Data System (ADS)

    Harlow, J.; Yalla, M.; Kantor, J.

    1991-11-01

    Since the enactment of the National Energy Act of 1979, many private energy producers have been planning and building small generation and cogeneration facilities in order to sell power to the local utility. Many of the non-utility generators built after 1979 are connected directly to the closest utility distribution circuit. Aware of the problems associated with connecting generators in this manner, electric utilities across the country developed specifications and standards to allow safe and reliable interconnection. The report describes a malfunction protective relay which uses state-of-the-art digital signal processing procedures to accomplish the objective of providing most of the relay requirements of utility electrical interconnections. The relay has been demonstrated to be suitable for this critical application through extensive laboratory and in-service field testing. The relay, incorporating thirteen distinct protection functions affords the user the savings of the initial capital cost plus simplicity of installation and use.

  1. Fully relayed regenerative amplifier

    DOEpatents

    Glass, Alexander J.

    1981-01-01

    A regenerative laser apparatus and method using the optical relay concept to maintain high fill factors, to suppress diffraction effects, and to minimize phase distortions in a regenerative amplifier.

  2. Cruise Missile Engines

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Williams International's F107 fanjet engine is used in two types of cruise missiles, Navy-sponsored Tomahawk and the Air Force AGM-86B Air Launched Cruise Missile (ALCM). Engine produces about 600 pounds thrust, is one foot in diameter and weighs only 141 pounds. Design was aided by use of a COSMIC program in calculating airflows in engine's internal ducting, resulting in a more efficient engine with increased thrust and reduced fuel consumption.

  3. A TRANSISTORIZED RELAY SERVO.

    DTIC Science & Technology

    DC motor is achieved with standard power transistors and a simple transistorized preamplifier, A permanent magnet, DC motor is used as the test vehicle to illustrate the feasibility of control without an amplidyne or mechanical relay. The ’bang-bang’, capability of the controller to operate as a near-ideal ’relay’ is emphasized. The inherent flexibility allowed in selecting the switching characteristics is also demonstrated. The discussion points toward practical application and stresses the analysis of the switching

  4. Passive neutron dosimetry on cruise missile tests

    SciTech Connect

    Ewing, R.I.

    1980-01-01

    One of the components exercised during development tests of cruise missiles is the neutron generator that supplies the burst of neutrons needed to initiate a nuclear explosion. The subject of this report is a method of verifying the production of neutrons using a passive neutron activation technique that is sufficiently sensitive to detect a decay rate of a few atoms per hour.

  5. 77 FR 1039 - Internet-Based Telecommunications Relay Service Numbering

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-09

    ... COMMISSION 47 CFR Part 64 Internet-Based Telecommunications Relay Service Numbering AGENCY: Federal... rules that govern access to toll-free numbers by users of Internet- based Telecommunications Relay... an impact on any rules of particular applicability. Subject: Internet-Based Telecommunications...

  6. 14. Missile thrusters, missile resting on ring, shock absorber attachments ...

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

    14. Missile thrusters, missile resting on ring, shock absorber attachments at three points - Ellsworth Air Force Base, Delta Flight, Launch Facility, On County Road T512, south of Exit 116 off I-90, Interior, Jackson County, SD

  7. Autonomous mobile communication relays

    NASA Astrophysics Data System (ADS)

    Nguyen, Hoa G.; Everett, Hobart R.; Manouk, Narek; Verma, Ambrish

    2002-07-01

    Maintaining a solid radio communication link between a mobile robot entering a building and an external base station is a well-recognized problem. Modern digital radios, while affording high bandwidth and Internet-protocol-based automatic routing capabilities, tend to operate on line-of-sight links. The communication link degrades quickly as a robot penetrates deeper into the interior of a building. This project investigates the use of mobile autonomous communication relay nodes to extend the effective range of a mobile robot exploring a complex interior environment. Each relay node is a small mobile slave robot equipped with sonar, ladar, and 802.11b radio repeater. For demonstration purposes, four Pioneer 2-DX robots are used as autonomous mobile relays, with SSC-San Diego's ROBART III acting as the lead robot. The relay robots follow the lead robot into a building and are automatically deployed at various locations to maintain a networked communication link back to the remote operator. With their on-board external sensors, they also act as rearguards to secure areas already explored by the lead robot. As the lead robot advances and RF shortcuts are detected, relay nodes that become unnecessary will be reclaimed and reused, all transparent to the operator. This project takes advantage of recent research results from several DARPA-funded tasks at various institutions in the areas of robotic simulation, ad hoc wireless networking, route planning, and navigation. This paper describes the progress of the first six months of the project.

  8. Advanced missile technology. A review of technology improvement areas for cruise missiles. [including missile design, missile configurations, and aerodynamic characteristics

    NASA Technical Reports Server (NTRS)

    Cronvich, L. L.; Liepman, H. P.

    1979-01-01

    Technology assessments in the areas of aerodynamics, propulsion, and structures and materials for cruise missile systems are discussed. The cruise missiles considered cover the full speed, altitude, and target range. The penetrativity, range, and maneuverability of the cruise missiles are examined and evaluated for performance improvements.

  9. National Missile Defense Contingency Deployment.

    DTIC Science & Technology

    1995-01-01

    Defense Organization PMCS IDEA PAPER TITLE: National Missile Defense, Contingency Deployment Planning PMCS CLASS: 95C AUTHOR: Clifford E. Reeves... NATIONAL MISSILE DEFENSE CONTINGENCY DEPLOYMENT INTRODUCTION The author feels it is vital to start strategic planning for the development of operational...PROFESSIONAL MILITARY COMPTROLLER SCHOOL IDEA PAPER TITLE NATIONAL MISSILE DEFENSE CONTINGENCY DEPLOYMENT AUTHOR CLIFFORD E. REEVES GS-15, OSD

  10. Hypersonic missile propulsion system

    SciTech Connect

    Kazmar, R.R.

    1998-11-01

    Pratt and Whitney is developing the technology for hypersonic components and engines. A supersonic combustion ramjet (scramjet) database was developed using hydrogen fueled propulsion systems for space access vehicles and serves as a point of departure for the current development of hydrocarbon scramjets. The Air Force Hypersonic Technology (HyTech) Program has put programs in place to develop the technologies necessary to demonstrate the operability, performance and structural durability of an expendable, liquid hydrocarbon fueled scramjet system that operates from Mach 4 to 8. This program will culminate in a flight type engine test at representative flight conditions. The hypersonic technology base that will be developed and demonstrated under HyTech will establish the foundation to enable hypersonic propulsion systems for a broad range of air vehicle applications from missiles to space access vehicles. A hypersonic missile flight demonstration is planned in the DARPA Affordable Rapid Response Missile Demonstrator (ARRMD) program in 2001.

  11. Tactical missile conceptual design

    NASA Astrophysics Data System (ADS)

    Redmon, D. R.

    1980-09-01

    This thesis presents the theory necessary for the conceptual design of a tactical missile. The design process begins with the well known linear aerodynamic theory for initial sizing and later includes nonlinear effects to determine the final design of the missile. Where theory does not apply, empirical methods are presented which are known to give accurate results. An air-to-air missile is designed for a specific threat as an example which immediately follows the development of the theory for each section. Several small digital computer programs are presented and used for analysis of specific areas of the design. One large program (AEROL) is used for determining the aerodynamic coefficients of the final design.

  12. Exposure assessment of JAVELIN missile combustion products

    NASA Astrophysics Data System (ADS)

    Lundy, Donald O.; Langford, Roland E.

    1994-02-01

    Characterization and analysis of combustion products resulting from firing the JAVELIN missile were performed. Of those combustion products analyzed, it was determined that airborne lead concentrations exceeded the OSHA PEL of 50 micrograms each time the missile was fired while in the enclosure. Since the OSHA PEL standard is based upon a continuous rather than a short-term exposures blood lead concentrations were sought to ascertain the relationship between a short duration airborne exposure and its physiological effect on the body. Blood lead levels were taken on 49 test subjects prior to various JAVELIN missile test firings. Of those 49, 21 were outfitted With personal sampling equipment to determine airborne concentrations at the Assistant Gunner and Gunner positions. Periodic blood sampling after a single exposure showed an average increase of 2.27 micrograms/dL for all test subjects. Recommendations were made to consider changes in the positioning of the enclosure inhabitants to minimize airborne lead concentrations, to limit the number of missiles fired (situation dependent), and replacement of the lead B-resorcyolate with a non-lead containing burn rate modifier for the launch motor.

  13. Identification of missile guidance laws for missile warning systems applications

    NASA Astrophysics Data System (ADS)

    Ralph, Jason F.; Smith, Moira I.; Heather, Jamie P.

    2006-05-01

    The reliable detection and tracking of missile plumes in sequences of infrared images is a crucial factor in developing infrared missile warning systems for use in military and civil aircraft. This paper discusses the development of a set of algorithms that allow missile plumes to be detected, tracked and classified according to their perceived motion in the image plane. The aim is to classify the missile motion so as to provide an indication of the guidance law which is being used and, hence, to determine the type of missile that may be present and allow the appropriate countermeasures to be deployed. The algorithms allow for the motion of the host platform and they determine the missile motion relative to the fixed background provided by the scene. The tracks produced contain sufficient information to allow good discrimination between several standard missile types.

  14. Hypersonic Airbreathing Missile

    NASA Technical Reports Server (NTRS)

    Hunt, J. L.; Lawing, P. L.; Marcum, D. C., Jr. (Inventor)

    1978-01-01

    A hypersonic airbreathing missile using dual mode scramjet engines for propulsion is described. The fuselage is constructed of a material with a high heat sink capacity and is covered with a thermal protective shield and lined with an internal insulating blanket. The engine airframe integration uses the flat lower portion of the lower fuselage to precompress the air entering the scramjet engines. The precompression of air entering the scramjet inlets increases as the angles of attack. This feature results in a highly maneuverable missile which can accelerate as it banks into a turn.

  15. The present status and the future of missile aerodynamics

    NASA Technical Reports Server (NTRS)

    Nielsen, Jack N.

    1988-01-01

    Some recent developments in the state of the art in missile aerodynamics are reviewed. Among the subjects covered are: (1) tri-service/NASA data base, (2) wing-body interference, (3) nonlinear controls, (4) hypersonic transition, (5) vortex interference, (6) airbreathers, supersonic inlets, (7) store separation problems, (8) correlation of missile data, (9) CFD codes for complete configurations, (10) engineering prediction methods, and (11) future configurations. Suggestions are made for future research and development to advance the state of the art of missile aerodynamics.

  16. 49 CFR 234.263 - Relays.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Relays. 234.263 Section 234.263 Transportation... Inspections and Tests § 234.263 Relays. (a) Except as stated in paragraph (b) of this section, each relay that.... (b)(1) Alternating current vane type relays, direct current polar type relays, and relays with...

  17. 49 CFR 234.263 - Relays.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Relays. 234.263 Section 234.263 Transportation... Inspections and Tests § 234.263 Relays. (a) Except as stated in paragraph (b) of this section, each relay that.... (b)(1) Alternating current vane type relays, direct current polar type relays, and relays with...

  18. The North Korean Missile Program

    NASA Astrophysics Data System (ADS)

    Wright, David

    2001-04-01

    In recent years, the development of ballistic missiles by North Korea has been a key motivation for US efforts to stem missile proliferation and to develop defenses against intermediate and long-range missiles. In the 1980s, North Korea reverse-engineered short-range Soviet Scud missiles and began to produce and sell them. In 1993, it flight-tested a missile reported to have a range of up to 1,300 kilometers, which would allow it to target most of Japan. In 1998, it launched a multi-stage missile over Japan; it later announced that the launch had been an attempt to place a satellite in orbit. An important question is what these tests imply for its current capability and its possible future missile development. Since North Korea has sold missiles to countries in the Middle East and South Asia and is reported to be assisting Iran's missile development program, understanding its capabilities is relevant to security concerns in several parts of the world. In this talk I will discuss my analysis of the publicly available information about North Korea's missile tests, and my conclusions about possible future developments. This includes estimates of ranges and payloads of its next potential generation of missiles, and comments about their potential military utility.

  19. Latching relay switch assembly

    DOEpatents

    Duimstra, Frederick A.

    1991-01-01

    A latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes at least one permanent magnet and at least one electromagnet. The respective sections are, generally, arranged in separate locations or cavities in the assembly. The switch is latched by a permanent magnet assembly and selectively switched by an overriding electromagnetic assembly.

  20. Redstone Missile on Launch Pad

    NASA Technical Reports Server (NTRS)

    1958-01-01

    Redstone missile No. 1002 on the launch pad at Cape Canaveral, Florida, on May 16, 1958. The Redstone ballistic missile was a high-accuracy, liquid-propelled, surface-to-surface missile developed by the Army Ballistic Missile Agency, Redstone Arsenal, in Huntsville, Alabama, under the direction of Dr. von Braun. The Redstone engine was a modified and improved version of the Air Force's Navaho cruise missile engine of the late forties. The A-series, as this would be known, utilized a cylindrical combustion chamber as compared with the bulky, spherical V-2 chamber. By 1951, the Army was moving rapidly toward the design of the Redstone missile, and production was begun in 1952. Redstone rockets became the 'reliable workhorse' for America's early space program. As an example of the versatility, Redstone was utilized in the booster for Explorer 1, the first American satellite, with no major changes to the engine or missile

  1. Dragon Missile Simulator.

    DTIC Science & Technology

    1978-02-01

    A brassboard training device that simulates the Dragon missile was developed and tested to evaluate the characteristics that are necessary for...improved training of Dragon gunners. Videotape recording and a full color simulation were found to be valuable as a training aid. An audible signal

  2. Nondestructive inspection of a composite missile launcher

    NASA Astrophysics Data System (ADS)

    Ley, O.; Chung, S.; Butera, M.; Valatka, T.; Triplett, M. H.; Godinez, V.

    2012-05-01

    Lighter weight alternatives are being sought to replace metallic components currently used in high performance aviation and missile systems. Benefits of lightweight, high strength carbon fiber reinforced composites in missile launchers and rocket motor cases include improved fuel economy, increased flight times, enhanced lethality and/or increased velocity. In this work, various nondestructive inspection techniques are investigated for the damage assessment of a composite missile launcher system for use in U.S. Army attack helicopters. The launcher system, which includes rails and a hardback, can be subject to impact damage from accidental tool drops, routine operation, and/or ballistic threats. The composite hardback and the launch rails both have complex geometries that can challenge the inspection process. Scanning techniques such as line scanning thermography, ultrasonic, and acousto-ultrasonics will be used and compared to determine damage detection accuracy, reliability, and efficiency. Results will also be compared with visual observations to determine if there is a correlation. The goal is to establish an inspection method that quickly and accurately assesses damage extent in order to minimize service time and return the missile system back into the field [1].

  3. Using NASTRAN to model missile inertia loads

    NASA Technical Reports Server (NTRS)

    Marvin, R.; Porter, C.

    1985-01-01

    An important use of NASTRAN is in the area of structural loads analysis on weapon systems carried aboard aircraft. The program is used to predict bending moments and shears in missile bodies, when subjected to aircraft induced accelerations. The missile, launcher and aircraft wing are idealized, using rod and beam type elements for solution economy. Using the inertia relief capability of NASTRAN, the model is subjected to various acceleration combinations. It is found to be difficult to model the launcher sway braces and hooks which transmit compression only or tension only type forces respectively. A simple, iterative process was developed to overcome this modeling difficulty. A proposed code modification would help model compression or tension only contact type problems.

  4. Relaying an optical wavefront

    DOEpatents

    Sweatt, William C.; Vawter, G. Allen

    2007-03-06

    A wavefront rely devices samples an incoming optical wavefront at different locations, optically relays the samples while maintaining the relative position of the samples and the relative phase between the samples. The wavefront is reconstructed due to interference of the samples. Devices can be designed for many different wavelengths, including for example the ultraviolet, visible, infrared and even longer wavelengths such as millimeter waves. In one application, the device function as a telescope but with negligible length.

  5. Theater Missile Defense in Japan: Implications for the U.S.-China-Japan Strategic Relationship

    DTIC Science & Technology

    2000-09-01

    Missile Defense (TMD). The question of U.S. assistance to Japan to develop and deploy a TMD is particularly complex and controversial. Subject Terms...considers a topic of key importance to U.S. national security Japan’s agreement to cooperate with the United States on the development of a theater...missile defense (TMD). China vigorously opposes this plan and insists that U.S. development of TMD and national missile defense systems will

  6. Defense against ballistic missiles

    SciTech Connect

    Mark, H. )

    1992-01-01

    A development history and development status evaluation is presented for weapons technologies capable of serving as defenses against nuclear-tipped ballistic missiles. The decisive turning-point in this history was the March 23, 1983 announcement by President Reagan of the Strategic Defense Initiative (SDI). Due to President Reagan's emphasis on population protection, 'global' defense systems have tended to dominate SDI design efforts. The most important SDI technical achievements to date encompass (1) miniature homig devices, (2) the upgrade of the Patriot SAM for missile-interception capabilities, (3) light exoatmospheric projectiles, such as 'Brilliant Pebbles', (4) successful laser-communications experiments, and (5) the warhead/decoy-discriminating Firepond lidar system. 7 refs.

  7. Advanced strategic missile development

    NASA Astrophysics Data System (ADS)

    Strickler, R. L.

    1981-05-01

    The M-X program is taking two paths: (1) the current development and projected deployment of a survivable land based ICBM (the M-X) in a multiple protective structure system, and (2) a building block development of readiness posture and strategic futures technology that could be used for a wide range of projected needs in the event of major changes in the threat or the political climate. The blend of aerospace and civil engineering technologies which has resulted in the systems concept necessary to assure the continued survivability of the land based strategic missile force is summarized. Recent advanced technology development activities, which have been focused on systems upgrade options to the current ICBM force, basing options which may be required for special force elements, small missile options for airborne applications, penetration technology to counter SAM and ABM threats, and systems concepts for unique targeting requirements are reviewed.

  8. Missile Defense Strategic Stationing

    DTIC Science & Technology

    2011-03-11

    increased its ballistic missile capability to threaten not only the Middle East, but with its Shahab - 3 MRBM, can also range Eastern Europe. These...PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DD-MM-YYYY) 11-03-2011 2. REPORT TYPE Strategy Research Project 3 . DATES...deployment into theater, committing 87% of PATRIOT units to current deterrence missions as part of the DoD strategy of 3 forward presence. This leaves

  9. Nature's Ballistic Missile.

    PubMed

    Robb, E J; Barron, G L

    1982-12-17

    The parasitic fungus Haptoglossa mirabilis infects its rotifer host by means of a gun-shaped attack cell. The anterior end of the cell is elongated to form a barrel; the wall at the mouth is invaginated deep into the cell to form a bore. A walled chamber at the base of the bore houses a complex, missile-like attack apparatus. The projectile is fired from the gun cell at high speed to accomplish initial penetration of the host.

  10. 49 CFR 236.589 - Relays.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Relays. 236.589 Section 236.589 Transportation... Cab Signal Systems Inspection and Tests; Locomotive § 236.589 Relays. (a) Each relay shall be removed... such relay is designed to operate, as follows: (1) Master or primary relays of torque type depending...

  11. 49 CFR 236.589 - Relays.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Relays. 236.589 Section 236.589 Transportation... Cab Signal Systems Inspection and Tests; Locomotive § 236.589 Relays. (a) Each relay shall be removed... such relay is designed to operate, as follows: (1) Master or primary relays of torque type depending...

  12. 49 CFR 236.589 - Relays.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Relays. 236.589 Section 236.589 Transportation... Cab Signal Systems Inspection and Tests; Locomotive § 236.589 Relays. (a) Each relay shall be removed... such relay is designed to operate, as follows: (1) Master or primary relays of torque type depending...

  13. 49 CFR 236.589 - Relays.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Relays. 236.589 Section 236.589 Transportation... Cab Signal Systems Inspection and Tests; Locomotive § 236.589 Relays. (a) Each relay shall be removed... such relay is designed to operate, as follows: (1) Master or primary relays of torque type depending...

  14. 49 CFR 236.589 - Relays.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Relays. 236.589 Section 236.589 Transportation... Cab Signal Systems Inspection and Tests; Locomotive § 236.589 Relays. (a) Each relay shall be removed... such relay is designed to operate, as follows: (1) Master or primary relays of torque type depending...

  15. Tactical missile turbulence problems

    NASA Technical Reports Server (NTRS)

    Dickson, Richard E.

    1987-01-01

    Of particular interest is atmospheric turbulence in the atmospheric boundary layer, since this affects both the launch and terminal phase of flight, and the total flight for direct fire systems. Brief discussions are presented on rocket artillery boost wind problems, mean wind correction, turbulent boost wind correction, the Dynamically Aimed Free Flight Rocket (DAFFR) wind filter, the DAFFR test, and rocket wake turbulence problems. It is concluded that many of the turbulence problems of rockets and missiles are common to those of aircraft, such as structural loading and control system design. However, these problems have not been solved at this time.

  16. High Durability Missile Domes

    DTIC Science & Technology

    1978-12-01

    LE"VEL ~i SWHIGH DURABILITY MISSILE DOMES.) SRaytheon Company ,4 Research Division "Waltham, MA 02154 F R. / man, E. /Maguire J. / pappi / D- ,ec s t_...30 Sept 1978 6. PERFORMING ORG. REPqprNUMBER S-2439 " 7. AUTHOR(s) 8. CONTRACT OR GRANT NUMBER(s) R. Gentilman E. Maguire N00014-76-C-0635 J. Pappis 9...Arthur M. Diness is the project scientist. The work was carried out at Raytheon Research Division, Advanced Materials Department. Dr. J. Pappis is the

  17. 15 CFR 742.5 - Missile technology.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 2 2011-01-01 2011-01-01 false Missile technology. 742.5 Section 742... BASED CONTROLS § 742.5 Missile technology. (a) License requirements. (1) In support of U.S. foreign... establish the existence of a contract. (d) Missile Technology Control Regime. Missile Technology...

  18. Radio Relays Improve Wireless Products

    NASA Technical Reports Server (NTRS)

    2009-01-01

    Signal Hill, California-based XCOM Wireless Inc. developed radio frequency micromachine (RF MEMS) relays with a Phase II Small Business Innovation Research (SBIR) contract through NASA?s Jet Propulsion Laboratory. In order to improve satellite communication systems, XCOM produced wireless RF MEMS relays and tunable capacitors that use metal-to-metal contact and have the potential to outperform most semiconductor technologies while using less power. These relays are used in high-frequency test equipment and instrumentation, where increased speed can mean significant cost savings. Applications now also include mainstream wireless applications and greatly improved tactical radios.

  19. An overview of relay channels - Information theory of satellite data relay link

    NASA Astrophysics Data System (ADS)

    Iida, Takashi

    1987-03-01

    This paper gives an overview of the theory of the relay channel, the communication channel having a relay encoder between transmitter and receiver. The relay channel corresponds to a satellite data relay link. The basic problem of this theory is to find the channel capacity. The theory of the relay channel was introduced by Van der Meulen (1971) and was expanded by Cover and El Gamal (1979). This paper reviews the meaning of relay in communication, and discusses the general, degraded, Gaussian degraded, and feedback relay channels. Furthermore, the satellite data relay link is discussed in comparison with the relay channel theory.

  20. 49 CFR 236.106 - Relays.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Relays. 236.106 Section 236.106 Transportation... Inspections and Tests; All Systems § 236.106 Relays. Each relay, the functioning of which affects the safety... centrifugal type relay shall be tested at least once every 12 months; (b) Alternating current vane type...

  1. 49 CFR 236.789 - Relay, timing.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Relay, timing. 236.789 Section 236.789... Relay, timing. A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized....

  2. 49 CFR 236.789 - Relay, timing.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Relay, timing. 236.789 Section 236.789... Relay, timing. A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized....

  3. 49 CFR 236.789 - Relay, timing.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Relay, timing. 236.789 Section 236.789... Relay, timing. A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized....

  4. 49 CFR 236.789 - Relay, timing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Relay, timing. 236.789 Section 236.789... Relay, timing. A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized....

  5. 49 CFR 236.106 - Relays.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Relays. 236.106 Section 236.106 Transportation... Inspections and Tests; All Systems § 236.106 Relays. Each relay, the functioning of which affects the safety... centrifugal type relay shall be tested at least once every 12 months; (b) Alternating current vane type...

  6. 49 CFR 236.106 - Relays.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Relays. 236.106 Section 236.106 Transportation... Inspections and Tests; All Systems § 236.106 Relays. Each relay, the functioning of which affects the safety... centrifugal type relay shall be tested at least once every 12 months; (b) Alternating current vane type...

  7. 49 CFR 236.106 - Relays.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Relays. 236.106 Section 236.106 Transportation... Inspections and Tests; All Systems § 236.106 Relays. Each relay, the functioning of which affects the safety... centrifugal type relay shall be tested at least once every 12 months; (b) Alternating current vane type...

  8. 49 CFR 236.789 - Relay, timing.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Relay, timing. 236.789 Section 236.789... Relay, timing. A relay which will not close its front contacts or open its back contacts, or both, until the expiration of a definite time intervals after the relay has been energized....

  9. 49 CFR 236.106 - Relays.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Relays. 236.106 Section 236.106 Transportation... Inspections and Tests; All Systems § 236.106 Relays. Each relay, the functioning of which affects the safety... centrifugal type relay shall be tested at least once every 12 months; (b) Alternating current vane type...

  10. Costs of strikes between vulnerable missile forces

    SciTech Connect

    Canavan, G.H.

    1997-02-01

    This note derives the first and second strike magnitudes and costs for strikes between vulnerable missile forces with multiple warheads. The extension to mixes with invulnerable missiles is performed in a companion note. Stability increases as the number of weapons per missile is reduced. The optimal allocation of weapons between missiles and value is significant in predicting the stability impact of the reduction of the number of weapons per missile at large numbers of missiles, less significant in reducing the number of missiles for fixed weapons per missile. At low numbers of missiles, the stability indices for singlet and triplet configurations are comparable, as are the number of weapons each would deliver on value targets.

  11. Ballistic Missile Defense System (BMDS)

    DTIC Science & Technology

    2015-12-01

    Intelligence & Security MD30 BMD Information Management Systems MD31 Modeling & Simulation MD32 Quality, Safety, and Mission Assurance...Surveillance Model 2 (AN/TPY-2) Radars, 12 Launchers, 8 Missile Round Pallets, 7 Multifunctional Information Distribution System (MIDS) Terminals, 4...Selected Acquisition Report (SAR) RCS: DD-A&T(Q&A)823-362 Ballistic Missile Defense System (BMDS) As of FY 2017 President’s Budget Defense

  12. Laser Relay: Improving Space Communications

    NASA Image and Video Library

    The Laser Communications Relay Demonstration mission proposes to revolutionize the way we send and receive data, video and other information, using lasers to encode and transmit data at rates 10 to...

  13. Problems of National Missile Defense

    NASA Astrophysics Data System (ADS)

    Cornwall, John

    2000-04-01

    The currently-proposed national missile defense (NMD) is supposed to counter accidental Russian or Chinese launches of intercontinental nuclear-armed missiles, or rogue nation launches of similar nuclear missiles or of missiles armed with biological weapons, by using mid-course hit-to-kill vehicles guided by IR and radar. But it seems very likely that any nation capable of building (or buying) such a missile offense can build (or buy) effective countermeasures to NMD. These include anti-simulation decoys made of multi-layer insulation (MLI), with warheads covered in MLI sheaths so their signatures resemble those of the decoys. MLI can be effective against both passive IR and radar detection/discrimination. Biological warheads can counter any mid-course defense by releasing a great number of submunitions early in flight. Both nuclear and biological weapons can be deployed by other means, including covert ships in port; trucks; and cruise missiles. The best defense against Russian/Chinese accidental launches is assistance to these countries in improving their launch control systems.

  14. Rascal Air-to-Ground Guided Missiles

    DTIC Science & Technology

    1947-04-30

    14169 MODEL MX-776 PREPARED BY •J’^yy’ APPROVED BY APPROVED BY V.*f ShCRET •.’ # "D t L vy/%>rvig/y CORP SECRET 0 TABLE OF CONTENTS Page...University we attended a symposium concerned with problems of free flight testing of full size and scale model missiles. At Wright Field the subject of...8217 facilities were Inspected as a possible sub- contractor. Their organization Is small, hut they have adequate shop facilities for bulliing model shop

  15. The power relay satellite

    NASA Astrophysics Data System (ADS)

    Glaser, Peter E.

    The availability and use of renewable energy sources compatible with reducing risks to the global environment are key to sustainable development. Large-scale, renewable energy resources at undeveloped or underutilized sites are potentially available on several continents. The Power Relay Satellite (PRS) concept has the potential to access these remote energy resources by coupling primary electricity generation from terrestrial transmission lines. A global PRS network can be envisioned to provide a high degree of flexibility for supplying energy demands worldwide with wireless power transmitted from sites on Earth to geosynchronous orbit and then reflected to receivers interfacing with terrestrial power transmision networks. Past developments in wireless power transmission (WPT) are reviewed and recent successful results are noted. The origins of the PRS concept, and a possible configuration are discussed, principles of WPT at microwave frequencies, functional requirements, and system design contraints are outlined, and space transportation concepts presented. PRS assessments including applicable technologies, economic projections, and societal issues are highlighted. It is concluded that the PRS provides a promising option to access renewable resources at great distances from major markets, and represents an important stage in the future development in the future of solar power satellites.

  16. The power relay satellite

    SciTech Connect

    Glaser, P.E.

    1994-12-31

    The availability and use of renewable energy sources compatible with reducing risks to the global environment are key to sustainable development. Large-scale, renewable energy resources at undeveloped or underutilized sites are potentially available on several continents. The Power Relay Satellite (PRS) concept has the potential to access these remote energy resources by coupling primary electricity generation from terrestrial transmission lines. A global PRS network can be envisioned to provide a high degree of flexibility for supplying energy demands worldwide with wireless power transmitted from sites on Earth to geosynchronous orbit and then reflected to receivers interfacing with terrestrial power transmision networks. Past developments in wireless power transmission (WPT) are reviewed and recent successful results are noted. The origins of the PRS concept, and a possible configuration are discussed, principles of WPT at microwave frequencies, functional requirements, and system design contraints are outlined, and space transportation concepts presented. PRS assessments including applicable technologies, economic projections, and societal issues are highlighted. It is concluded that the PRS provides a promising option to access renewable resources at great distances from major markets, and represents an important stage in the future development in the future of solar power satellites.

  17. PHOTOSENSITIVE RELAY CONTROL CIRCUIT

    DOEpatents

    Martin, C.F.

    1958-01-14

    adapted for the measurement of the time required for an oscillating member to pass through a preselected number of oscillations, after being damped to a certain maximum amplitude of oscillation. A mirror is attached to the moving member and directs light successively to a photocell which is part of a trigger unit and to first and second photocells which are part of a starter unit, as the member swings to its maximum amplitude. The starter and trigger units comprise thyratrons and relays so interconnected that the trigger circuit, although generating a counter pulse, does not register a count in the counter when the light traverses both photocells of the starter unit. When the amplitude of oscillation of the member decreases to where the second photocell is not transversed, the triggei pulse is received by the counter. The counter taen operates to register the desired number of oscillations and initiates and terminates a timer for measuring the time irterval for the preselected number of oscillations.

  18. Optimization of a two-way MIMO amplify-and-forward relay network

    NASA Astrophysics Data System (ADS)

    Zhang, Ying; Chen, Yinjiang; Pan, Chuanyi; Zhao, Huapeng; Kang, Ning

    2014-12-01

    In this paper, we consider optimization of a two-way multiple-input multiple-output (MIMO) amplify-and-forward relay network which consists of a pair of transceivers and several relay nodes. Multiple antennas are equipped on the transceivers and relays. Multiple access broadcast scheme which finishes communication in two time slots is considered. In the first time slot, signals received by the relays are scaled by several beamforming matrices. In the second time slot, the relays transmit the scaled signals to the two transceivers. Upon receiving these signals, a MIMO equalizer is implemented at each transceiver to recover the desired signal. In this paper, zero forcing equalizers are used. Joint optimization of the beamforming matrices and the equalizers are realized using the following criteria: 1) the total relay transmission power is minimized subject to the minimal output signal-to-noise ratio (SNR) constraint at each transceiver, 2) the minimal output SNR of the two transceivers is maximized subject to total relay transmission power constraint, and 3) the minimal output SNR of the two transceivers is maximized subject to individual relay transmission power constraint. It is shown that the proposed optimization problems can be formulated as the second-order cone programming problems which can be solved efficiently. The validity of the proposed algorithm is verified by computer simulations.

  19. 77 FR 3514 - Protection Against Turbine Missiles

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-24

    ...The U.S. Nuclear Regulatory Commission (NRC or Commission) is issuing a revision to Regulatory Guide 1.115, ``Protection Against Turbine Missiles.'' This guide describes methods acceptable to the NRC staff for protecting safety-related structures, systems, and components against missiles resulting from turbine failure by the appropriate orientation and placement of the turbine-generator set, the management of the probability of turbine missile generation, and the use of missile barriers.

  20. Sealed reed relay limit switches

    NASA Astrophysics Data System (ADS)

    Ivanov, I. P.; Svintsov, G. P.; Yefimova, M. A.; Lebedev, A. V.; Samsonov, Y. P.

    1986-01-01

    Sealed reed relay limit switches are described which overcome the inherent deficiencies traditionally present in these devices: high material, labor consumption, and difficult operation. Series VSG limit switches developed at the All-Union Scientific Research and Technological Planning Institute for Relay Engineering (Cheboksary) for use in buildings are described. The VSG1 has a single switching contact, the VSG2 a single normally open contact, and the VSG3 a single normally closed contact. The VSG1 employs type MKS-27103 sealed reed relays, while the VSG2 and VSG3 employ KEM-1 reed relays. The magnet system, which consists of magnets and a plate, and the sealed reed relay are contained in a nonmagnetic casing with a slit in it. The mathematical expression defining the geometric dimensions of the magnet system is given. The basic parameteres of all three types of switches are tabulated. The VSG series switches can be used to replace VBK and BVK switches, thus saving electricity, labor, and materials, including silver.

  1. EAGLE: relay mirror technology development

    NASA Astrophysics Data System (ADS)

    Hartman, Mary; Restaino, Sergio R.; Baker, Jeffrey T.; Payne, Don M.; Bukley, Jerry W.

    2002-06-01

    EAGLE (Evolutionary Air & Space Global Laser Engagement) is the proposed high power weapon system with a high power laser source, a relay mirror constellation, and the necessary ground and communications links. The relay mirror itself will be a satellite composed of two optically-coupled telescopes/mirrors used to redirect laser energy from ground, air, or space based laser sources to distant points on the earth or space. The receiver telescope captures the incoming energy, relays it through an optical system that cleans up the beam, then a separate transmitter telescope/mirror redirects the laser energy at the desired target. Not only is it a key component in extending the range of DoD's current laser weapon systems, it also enables ancillary missions. Furthermore, if the vacuum of space is utilized, then the atmospheric effects on the laser beam propagation will be greatly attenuated. Finally, several critical technologies are being developed to make the EAGLE/Relay Mirror concept a reality, and the Relay Mirror Technology Development Program was set up to address them. This paper will discuss each critical technology, the current state of the work, and the future implications of this program.

  2. Protective Relays: Technical Terminology Bulletin. Terminotech, Vol. 1, No. 1.

    ERIC Educational Resources Information Center

    General Electric Co. of Canada, Ltd., Montreal, Quebec.

    This issue of a bulletin of technological terminology is devoted to protective electrical relays. A brief narrative on the subject is presented in both French and English. An English-French dictionary of terms comprises the bulk of the document. An explanatory illustration is appended. (JB)

  3. Impulsive control for hypervelocity missiles

    NASA Astrophysics Data System (ADS)

    Magness, R. W.

    1981-05-01

    A hypervelocity agile interceptor/quickshot is being developed for defense of ballistic missile launch sites. A guidance and control system is required to achieve the missile guidance accuracy necessary for direct target impact. Attitude control systems evaluated for the agile interceptor included aerodynamic controls, thrust vector controls and impulsive motor controls. The solid squib impulsive control motion was selected because of high response rate, low weight and low volume. A baseline motor configuration was designed and a solid propellant squib was developed for use in the control system. Ballistic pendulum and bench tests were conducted with a test impulsive control motor to measure nominal performance, establish the standard deviation of performance, and define requirements to prevent sympathetic ignition. A dynamic control wind tunnel test was also conducted to determine the impulse augmentation due to the impulsive motor jet interaction with the missile boundary layer. The degree and direction of augmentation was measured for variations in Mach number and angle of attack.

  4. Remote control missile model test

    NASA Technical Reports Server (NTRS)

    Allen, Jerry M.; Shaw, David S.; Sawyer, Wallace C.

    1989-01-01

    An extremely large, systematic, axisymmetric body/tail fin data base was gathered through tests of an innovative missile model design which is described herein. These data were originally obtained for incorporation into a missile aerodynamics code based on engineering methods (Program MISSILE3), but can also be used as diagnostic test cases for developing computational methods because of the individual-fin data included in the data base. Detailed analysis of four sample cases from these data are presented to illustrate interesting individual-fin force and moment trends. These samples quantitatively show how bow shock, fin orientation, fin deflection, and body vortices can produce strong, unusual, and computationally challenging effects on individual fin loads. Comparisons between these data and calculations from the SWINT Euler code are also presented.

  5. Satellite Relaying of Geophysical Data

    NASA Technical Reports Server (NTRS)

    Allenby, R. J.

    1977-01-01

    Data Collection Platforms (DCPs) for transmitting surface data to an orbiting satellite for relaying to a central data distribution center are being used in a number of geophysical applications. "Off-the-shelf" DCP's, transmitting through Landsat or GOES satellites, are fully capable of relaying data from low-data-rate instruments, such as tiltmeters or tide gauges. In cooperation with the Lamont-Doherty Geological Observatory, Goddard has successfully installed DCP systems on a tide gauge and tiltmeter array on Anegada, British Virgin Islands. Because of the high-data-rate requirements, a practical relay system capable of handling seismic information is not yet available. Such a system could become the basis of an operational hazard prediction system for reducing losses due to major natural catastrophies such as earthquakes, volcanic eruptions, landslides or tsunamis.

  6. Learning relay start strategies in swimming: What feedback is best?

    PubMed

    Fischer, Sebastian; Braun, Claudia; Kibele, Armin

    2017-04-01

    In the past, studies and book recommendations on relay starts in swimming have been predominantly focused on the change-over time (COT) as a performance criterion. Aside from the circular backswing start with parallel foot placement, few studies have analysed differences in the take-off movement including step approaches as well. Although trends could be identified, the results remained still somewhat inconclusive. In contrast, no study has examined as has examined whether a reduction of COT in between wall contact of the income swimmer and the take-off of the outgoing swimmer is an optimal relay start strategy, as advocated by various swimming experts. Therefore, the purpose of this study was to compare two different relay start strategies: offensive strategy minimizing COT and conservative strategy to maximize horizontal peak force (HPF). In this regard, a learning intervention with 24 elite-level swimmers (12 females, 12 male) was conducted to compare both strategies regarding relay start time, HPF and COT. Subjects were randomly assigned to two feedback groups: COT versus HPF at take-off. The results of this study showed a clear advantage for HPF feedback for relay start performance measured by wall contact of the incoming swimmer and head passage at 7.5 m of the outgoing swimmer. In addition, similar reductions in COTs were found in both training groups. In conclusion, swimmers should focus on force production rather than minimizing COT. For the latter, deteriorating consequences for force production must be considered.

  7. Ballistic Missile Intercept from UCAV

    DTIC Science & Technology

    2011-12-01

    the kinematic boundary is increases to ~150km. In addition, the simulated impact angles are not much lower than the previous case (see Figure 16 for...alphag=180/pi*nn*m_i*g/(ro*V^2*Sref/2)/13; % Kinematics Vdot=g*( nx -sin(th)); psidot=ny*g/V/cos(th); thdot=g*(nz-cos...of an air-launched missile from a UCAV against enemy ballistic missiles via computer simulation , using a TS-guidance algorithm developed by LT

  8. Summary of Flutter Experiences as a Guide to the Preliminary Design of Lifting Surfaces on Missiles

    NASA Technical Reports Server (NTRS)

    Martin, Dennis J

    1958-01-01

    Presented is a limited review of some experiences in flight testing of missiles and of wing flutter investigations that may be of interest in missile design. Several types of flutter of concern in missile studies are briefly described. Crude criteria are presented for two of the most common types of flutter to permit a rapid estimate to be made of the probability of the occurrence of flutter. Many of the details of the flutter problem have been omitted, and only the broader elements have been retained so as to give the designer an overall view of the subject.

  9. Towards real-time decentralized operating systems for ballistic missile defense

    SciTech Connect

    Van Tilborg, A.M.

    1982-01-01

    To satisfy the data processing needs of future ballistic missile defense systems, the US Army's ballistic missile defense advanced technology center is sponsoring extensive research on the subject of parallel computers. Both loosely coupled and tightly coupled machines consisting of numerous microcomputer processing elements are being evaluated for use in endoatmospheric, exoatmospheric, and space-based BMD systems. For various reasons, it is important that these parallel computers operate under the control of decentralized operating systems. This paper reports on the current status of research to develop decentralized operating systems for parallel computers used in ballistic missile defense. 24 references.

  10. Global positioning system missile test range applications

    SciTech Connect

    Partridge, M.E.

    1986-06-01

    Using the Global Positioning System (GPS), a missile under test could transmit its own position, reducing radar tracking requirements while still providing three-dimensional position and velocity data with the required accuracy. This study investigated minimum package size requirements for GPS implementation on the SRAM II missile as part of the joint test assembly telemetry system. Reported GPS missile test range applications are reviewed. The two missile tracking system implementations considered are a complete GPS package onboard the missile and onboard frequency translator that retransmits the GPS satellite signals. Accuracy and operation of the two methods are compared. A functional description of the GPS is provided.

  11. Historical development of world wide guided missiles

    NASA Technical Reports Server (NTRS)

    Spearman, M. L.

    1978-01-01

    This paper attempts to put in perspective the development of missiles from early history to present time. The influence of World War II in accelerating the development of guided missiles, particularly through German scientists, is discussed. The dispersion of German scientists to other countries and the coupling of their work with native talent to develop guided missiles is traced. Particular emphasis is placed on the evolution of the missile in the U.S. and the U.S.S.R. Since the Soviets possess what is probably the world's most complete array of dedicated missile system types, their known inventory is reviewed in some detail.

  12. Historical development of world wide guided missiles

    NASA Technical Reports Server (NTRS)

    Spearman, M. L.

    1978-01-01

    This paper attempts to put in perspective the development of missiles from early history to present time. The influence of World War II in accelerating the development of guided missiles, particularly through German scientists, is discussed. The dispersion of German scientists to other countries and the coupling of their work with native talent to develop guided missiles is traced. Particular emphasis is placed on the evolution of the missile in the U.S. and the U.S.S.R. Since the Soviets possess what is probably the world's most complete array of dedicated missile system types, their known inventory is reviewed in some detail.

  13. Comprehensive missile aerodynamics programs for preliminary design

    NASA Technical Reports Server (NTRS)

    Dillenius, M. F. E.; Hemsch, M. J.; Sawyer, W. C.; Allen, J. M.; Blair, A. B., Jr.

    1982-01-01

    Two different classes of missile aeroprediction programs have been recently developed. The first class of programs provides rapid engineering predictions and includes MISSILE1 and MISSILE2 applicable to missile configurations with axisymmetric bodies. The second class of programs consists of the DEMON series, including a simplified version NSWCDM, designed to calculate detailed loadings acting on supersonic missiles which may have non-circular body cross sections. Both classes account for high angles of attack and track vortices from canard or wing section to the tail section. Extensive comparisons with experimental data are presented including nonlinear effects of canard control.

  14. Historical development of worldwide guided missiles

    NASA Technical Reports Server (NTRS)

    Spearman, M. L.

    1983-01-01

    The development of missiles from early history to present time is put in perspective. The influence of World War II in accelerating the development of guided missiles, particularly through German scientists, is discussed. The dispersion of German scientists to other countries and the coupling of their work with native talent to develop guide missiles is traced. Particular emphasis is placed on the evolution of the missile in the U.S. and the U.S.S.R. Since the Soviets possess what is probably the world's most complete array of dedicated missile system types, their known inventory is reviewed. Some philosophical observations of missile design trends and missile purposes are made as related to the interests of various countries.

  15. 49 CFR 234.263 - Relays.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Relays. 234.263 Section 234.263 Transportation... SYSTEMS Maintenance, Inspection, and Testing Inspections and Tests § 234.263 Relays. (a) Except as stated in paragraph (b) of this section, each relay that affects the proper functioning of a...

  16. 49 CFR 234.263 - Relays.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Relays. 234.263 Section 234.263 Transportation... SYSTEMS Maintenance, Inspection, and Testing Inspections and Tests § 234.263 Relays. (a) Except as stated in paragraph (b) of this section, each relay that affects the proper functioning of a...

  17. 49 CFR 234.263 - Relays.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Relays. 234.263 Section 234.263 Transportation... SYSTEMS Maintenance, Inspection, and Testing Inspections and Tests § 234.263 Relays. (a) Except as stated in paragraph (b) of this section, each relay that affects the proper functioning of a...

  18. Relay Writing in an Adolescent Online Community

    ERIC Educational Resources Information Center

    Yi, Youngjoo

    2008-01-01

    "Welcome to Buckeye City" is an adolescent online community that was maintained by 25 Korean students who attended American schools. On the website, the students engaged in "relay writing"--a writing activity in which each person contributed a portion of an evolving story in a relayed manner. Relay writing offers teachers a new and valuable window…

  19. Signal Relay During Cell Migration

    NASA Astrophysics Data System (ADS)

    Guven, Can; Rericha, Erin; Ott, Edward; Losert, Wolfgang

    2012-02-01

    We developed a signal relay model to quantify the effect of intercellular communication in presence of an external signal, during the motion of groups of Dictyostelium discoideum cells. A key parameter is the ratio of amplitude of the cAMP (cyclic adenosine monophosphate) a signaling chemical secreted from individual cells versus the external cAMP field, which defines a time scale. Another time scale is set by the degradation rate of the cAMP. In our simulations, the competition between these two time scales results rich dynamics including uniform motion, as well as streaming and clustering instabilities. The simulations are compared to experiments for a wide range of different external signal strengths for both cells that secrete cAMP and a mutant which cannot relay cAMP. Under different strength of external linear cAMP gradient, the wild type cells form streams and exhibit clustering due to the intercellular signaling through individual cAMP secretion. In contrast, cells lacking signal relay move relatively straight. We find that the model captures both independent motion and the formation of aggregates when cells relay the signal.

  20. Ballistic Missile Defense Review Report

    DTIC Science & Technology

    2010-02-01

    range ballistic missiles. Iran launched its Safir Space Launch Vehicle ( SLV ) in August 2008 with what it claims was a dummy satellite. Iran used the...Safir-2 SLV to place the domestically produced Omid satellite in orbit in February 2009, according to statements made to the press by Iranian

  1. The problem of missile defence

    NASA Astrophysics Data System (ADS)

    Webber, Philip

    2014-05-01

    The idea of building a missile system to defend a nation from the horrors of nuclear attack first entered the public consciousness in the 1980s, when US president Ronald Reagan - backed by prominent (and controversial) scientific advisers such as the physicist Edward Teller - promoted the Strategic Defense Initiative as a supposedly impenetrable shield against the Soviet Union's nuclear arsenal.

  2. Growing Pumpkins Where Missiles Grew

    ERIC Educational Resources Information Center

    Loret, John

    1976-01-01

    Purposes of transforming the former Nike-Ajax missile base into a living historical homestead environmental center, resembling an 1800 Long Island village, were to build a homestead environmental center and develop materials, using homestead and pioneer skills, that could be used for education and recreation programs for the schools and community.…

  3. Growing Pumpkins Where Missiles Grew

    ERIC Educational Resources Information Center

    Loret, John

    1976-01-01

    Purposes of transforming the former Nike-Ajax missile base into a living historical homestead environmental center, resembling an 1800 Long Island village, were to build a homestead environmental center and develop materials, using homestead and pioneer skills, that could be used for education and recreation programs for the schools and community.…

  4. Countering Air and Missile Threats

    DTIC Science & Technology

    2007-02-05

    Operations. TELs serve as the transporter and launch platform for missiles. One very common TEL is the Soviet-era MAZ -543. TELs present a small, extremely...mobile target with very short dwell time. The MAZ -543 has tremendous off-road mobility and can easily hide. TELs generally travel only short

  5. Standard Missile-6 (SM-6)

    DTIC Science & Technology

    2016-12-01

    Selected Acquisition Report (SAR) RCS: DD-A&T(Q&A)823-391 Standard Missile-6 (SM-6) As of FY 2017 President’s Budget Defense Acquisition Management...Research, Development, Test, and Evaluation SAR - Selected Acquisition Report SCP - Service Cost Position TBD - To Be Determined TY - Then Year UCR - Unit

  6. Optimal deployment of missile interceptors

    SciTech Connect

    Bohachevsky, I.O.; Johnson, M.E.; Stein, M.L.

    1987-03-01

    Ballistic missile defenses composed of one- and two layers of interceptors that protect multiple assets from attacks by several types of warheads are modeled mathematically. Investigated are the most effective divisions of resources between midcourse and terminal defenses and the optimal deployments of terminal interceptors.

  7. Sea-Based Ballistic Missile Defense - Background and Issues for Congress

    DTIC Science & Technology

    2008-07-01

    distribution unlimited 13. SUPPLEMENTARY NOTES The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION...Future versions of the Aegis BMD system are to include a faster interceptor designed to intercept certain ICBMs. The Aegis BMD system has achieved 13...fly faster than shorter-range ballistic missiles. Consequently, intercepting a longer-range missile generally requires a faster -flying (continued

  8. Sea-Based Ballistic Missile Defense - Background and Issues for Congress

    DTIC Science & Technology

    2008-08-11

    distribution unlimited 13. SUPPLEMENTARY NOTES The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY...Future versions of the Aegis BMD system are to include a faster interceptor designed to intercept certain ICBMs. The Aegis BMD system has achieved...generally fly faster than shorter-range ballistic missiles. Consequently, intercepting a longer-range missile generally requires a faster -flying (continued

  9. ARMS CONTROL: U.S. Efforts to Control the Transfer of Nuclear-Capable Missile Technology

    DTIC Science & Technology

    2015-12-11

    and methodology of our work are described in appendix VII. Results in Brief The State and Commerce Departments-the U.S. export licensing authorities...risk of diversion is an important part of its analysis, Commerce focuses its reviews on certain countries that are developing nuclear-capable missiles...During the first 29 months of the MTCR, Commerce identified 128 license applications subject to missile technology controls, which involved up to 13

  10. STBC AF relay for unmanned aircraft system

    NASA Astrophysics Data System (ADS)

    Adachi, Fumiyuki; Miyazaki, Hiroyuki; Endo, Chikara

    2015-01-01

    If a large scale disaster similar to the Great East Japan Earthquake 2011 happens, some areas may be isolated from the communications network. Recently, unmanned aircraft system (UAS) based wireless relay communication has been attracting much attention since it is able to quickly re-establish the connection between isolated areas and the network. However, the channel between ground station (GS) and unmanned aircraft (UA) is unreliable due to UA's swing motion and as consequence, the relay communication quality degrades. In this paper, we introduce space-time block coded (STBC) amplify-and-forward (AF) relay for UAS based wireless relay communication to improve relay communication quality. A group of UAs forms single frequency network (SFN) to perform STBC-AF cooperative relay. In STBC-AF relay, only conjugate operation, block exchange and amplifying are required at UAs. Therefore, STBC-AF relay improves the relay communication quality while alleviating the complexity problem at UAs. It is shown by computer simulation that STBC-AF relay can achieve better throughput performance than conventional AF relay.

  11. Frantic Third World quest for ballistic missiles

    SciTech Connect

    Karp, A.

    1988-06-01

    Belatedly, Western Nations are trying to staunch the flow of technology that has helped create a number of new ballistic missile forces in the Third World. Ballistic missiles already are being used in one Third World conflict. Since the end of February, Iran and Iraq have fired more than 100 short-range, inaccurate missiles at each other's cities, causing thousands of casualties. These events illustrate that ballistic missiles are becoming an ominous reality in the Third World. Indeed, 20 Third World countries, including Israel and Brazil, currently possess ballistic missiles or are striving to develop them. On one level, these missiles - which are propelled by rockets into the upper atmosphere, travel in a ballistic trajectory, and are pulled by gravity to their targets - are for these nations a logical step in building up their military forces. While the missiles vary in range and accuracy, they can reach many targets in regional conflicts. Unlike manned aircraft, the do not require large, vulnerable bases. They are not as easily intercepted as slow bombers. And they are easier to develop because they are less sophisticated than modern cruise missiles such as the U.S. air-launched cruise missiles. In terms of global security, the most worrisome aspect of Third World ballistic missiles is their potential as nuclear weapons delivery systems.

  12. Historical review of missile aerodynamic developments

    NASA Technical Reports Server (NTRS)

    Spearman, M. Leroy

    1989-01-01

    The development of missiles from early history up to about 1970 is discussed. Early unpowered missiles beyond the rock include the spear, the bow and arrow, the gun and bullet, and the cannon and projectile. Combining gunpowder with projectiles resulted in the first powered missiles. In the early 1900's, the development of guided missiles was begun. Significant advances in missile technology were made by German scientists during World War II. The dispersion of these advances to other countries following the war resulted in accelerating the development of guided missiles. In the late 1940's and early 1950's there was a proliferation in the development of missile systems in many countries. These developments were based primarily on experimental work and on relatively crude analytical techniques. Discussed here are some of the missile systems that were developed up to about 1970; some of the problems encountered; the development of an experimental data base for use with missiles; and early efforts to develop analytical methods applicable to missiles.

  13. Aerodynamic Performance Predictions of a SA- 2 Missile Using Missile DATCOM

    DTIC Science & Technology

    2009-09-01

    Force Methodology for Missile DATCOM 7/07 (After Doyle, Rosema, Underwood, & Auman , 2009, p. 3)...................................................12......Version History for Missile DATCOM (After Auman , Doyle, Rosema, Underwood, & Blake, 2008

  14. The magic of relay mirrors

    NASA Astrophysics Data System (ADS)

    Duff, Edward A.; Washburn, Donald C.

    2004-09-01

    Laser weapon systems would be significantly enhanced with the addition of high altitude or space-borne relay mirrors. Such mirrors, operating alone with a directed energy source, or many in a series fashion, can be shown to effectively move the laser source to the last, so-called fighting mirror. This "magically" reduces the range to target and offers to enhance the performance of directed energy systems like the Airborne Laser and even ground-based or ship-based lasers. Recent development of high altitude airships will be shown to provide stationary positions for such relay mirrors thereby enabling many new and important applications for laser weapons. The technical challenges to achieve this capability are discussed.

  15. Resonant Inductive Power Transfer for Noncontact Launcher-Missile Interface

    DTIC Science & Technology

    2016-08-01

    implementation of a wireless power transfer system based on the concept of non-radiating inductive coupling. 14. SUBJECT TERMS Resonant Inductive Coupling...the purpose of a wireless power transfer system based on the concept of nonradiating inductive coupling. The core of the system is the inductive...TECHNICAL REPORT RDMR-WD-16-37 RESONANT INDUCTIVE POWER TRANSFER FOR NONCONTACT LAUNCHER-MISSILE INTERFACE Martin S

  16. Storage Reliability of Missile Materiel Program. Missile Materiel Reliability Prediction Handbook - Parts Count Prediction

    DTIC Science & Technology

    1978-02-01

    OF MISSILE MATERIEL PROGRAM ,. MISSILE MATERIEL RELIABILITY PREDICTION HANDBOOK + "ARTS COUNT PREDICTION LC-78-1 FEBRUARY 1978 Prepared by: Dennis F...data for predicting the reliability of missile systems based on a "parts count" approach. The handbook is a result of a program whosa objective is the...has been extracted from existing reliability prediction sources. For more informations, contactz Commaz • •r U. S. h. ,y Missile R&D Command ATTN

  17. Missile vascular injuries: 19-year experience.

    PubMed

    Ahanger, Abdul Gani; Wani, Mohd Lateef; Lone, Reyaz Ahmad; Singh, Shyam; Hussain, Zahur; Mir, Ishtiyak A; Irshad, Ifat; Ashraf, Hakeem Zubair; Dar, Abdul Majeed; Lone, Ghulam Nabi; Bhat, Mohammad Akbar; Sharma, Mukand Lal

    2010-03-01

    Missile vascular injuries have reached an epidemic proportion in Kashmir valley since the eruption of militancy. The present study was undertaken to analyze the mode, pattern, presentation, and management of missile vascular injuries. A retrospective study of patients with missile vascular injury from January 1990 to October 2008 was undertaken. Five hundred eighty patients with missile vascular injury were studied. All patients with vascular injury due to causes other than missiles were excluded from the study. Most of the patients were treated by interpositional saphenous vein graft or end-to-end anastomosis. The most common complication was wound infection (22.7%) followed by graft occlusion (3.8%). The amputation rate was 3.3% and was higher in patients with a delay of >6 hours to revascularization and associated fractures. Missile vascular injury requires prompt resuscitation and revascularization. Preoperative angiography is seldom necessary. Doppler study may sometimes be needed to aid in the diagnosis.

  18. Ballistic missile proliferation: An emerging threat 1992

    SciTech Connect

    Nagler, R.G.

    1992-10-01

    This report, based solely on information available from unclassified sources, provides a coherent picture of the scope and trends of ballistic missile proliferation. The focus is on countries developing, producing, or owning ballistic missiles capable of threatening the military forces, assets, or populations of neighboring or geographically remote countries. The report also identifies other countries expected to obtain operational ballistic missile capabilities, discusses expected growth in performance, and examines the projected availability of warheads of mass destruction. The emphasis is on ballistic missiles of ranges greater than approximately 300 km, though shorter range battlefield weapons are discussed as forerunners. The assessment excludes principal U.S. allies and countries formerly in the Warsaw Pact, except where these countries have sold missiles, technology; or personnel services to developing nations in support of their missile programs.

  19. 5. MISSILE TEST AND ASSEMBLY BUILDING, FRONT AND RIGHT SIDES, ...

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

    5. MISSILE TEST AND ASSEMBLY BUILDING, FRONT AND RIGHT SIDES, LOOKING SOUTHEAST. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  20. 6. MISSILE TEST AND ASSEMBLY BUILDING, REAR AND LEFT SIDES, ...

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

    6. MISSILE TEST AND ASSEMBLY BUILDING, REAR AND LEFT SIDES, LOOKING NORTHWEST. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  1. 7. PHOTOCOPY, PLANS, ELEVATIONS, AND SECTION DRAWING FOR MISSILE TEST ...

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

    7. PHOTOCOPY, PLANS, ELEVATIONS, AND SECTION DRAWING FOR MISSILE TEST AND ASSEMBLY BUILDING. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  2. 2. MISSILE TEST AND ASSEMBLY BUILDING, RIGHT SIDE, LOOKING WEST. ...

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

    2. MISSILE TEST AND ASSEMBLY BUILDING, RIGHT SIDE, LOOKING WEST. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  3. 4. MISSILE TEST AND ASSEMBLY BUILDING, LEFT SIDE, LOOKING NORTH. ...

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

    4. MISSILE TEST AND ASSEMBLY BUILDING, LEFT SIDE, LOOKING NORTH. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  4. 1. MISSILE TEST AND ASSEMBLY BUILDING, FRONT, LOOKING SOUTH. ...

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

    1. MISSILE TEST AND ASSEMBLY BUILDING, FRONT, LOOKING SOUTH. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  5. 3. MISSILE TEST AND ASSEMBLY BUILDING, REAR SIDE, LOOKING NORTH. ...

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

    3. MISSILE TEST AND ASSEMBLY BUILDING, REAR SIDE, LOOKING NORTH. - NIKE Missile Base SL-40, Missile Test & Assembly Building, South end of launch area, northeast of Generator Building No. 3, Hecker, Monroe County, IL

  6. 2. View from missile site control building (south to north) ...

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

    2. View from missile site control building (south to north) of missile launch area, showing warhead handling building in background - Stanley R. Mickelsen Safeguard Complex, Missile Launch Area, Within Exclusion Area, Nekoma, Cavalier County, ND

  7. Energy efficient circuit design using nanoelectromechanical relays

    NASA Astrophysics Data System (ADS)

    Venkatasubramanian, Ramakrishnan

    Nano-electromechanical (NEM) relays are a promising class of emerging devices that offer zero off-state leakage and behave like an ideal switch. Recent advances in planar fabrication technology have demonstrated that microelectromechanical (MEMS) scale miniature relays could be manufactured reliably and could be used to build fully functional, complex integrated circuits. The zero leakage operation of relays has renewed the interest in relay based low power logic design. This dissertation explores circuit architectures using NEM relays and NEMS-CMOS heterogeneous integration. Novel circuit topologies for sequential logic, memory, and power management circuits have been proposed taking into consideration the NEM relay device properties and optimizing for energy efficiency and area. In nanoscale electromechanical devices, dispersion forces like Van der Waals' force (vdW) affect the pull-in stability of the relay devices significantly. Verilog-A electromechanical model of the suspended gate relay operating at 1V with a nominal air gap of 5 - 10nm has been developed taking into account all the electrical, mechanical and dispersion effects. This dissertation explores different relay based latch and flip-flop topologies. It has been shown that as few as 4 relay cells could be used to build flip-flops. An integrated voltage doubler based flip flop that improves the performance by 2X by overdriving Vgb has been proposed. Three NEM relay based parallel readout memory bitcell architectures have been proposed that have faster access time, and remove the reliability issues associated with previously reported serial readout architectures. A paradigm shift in design of power switches using NEM relays is proposed. An interesting property of the relay device is that the ON state resistance (Ron) of the NEM relay switch is constant and is insensitive to the gate slew rate. This coupled with infinite OFF state resistance (Roff ) offers significant area and power advantages over CMOS

  8. Issues in national missile defense

    SciTech Connect

    Canavan, G.H.

    1998-12-01

    Strategic missiles and weapons are proliferating rapidly; thus, the US and its Allies are likely to face both capable bilateral threats and multilateral configurations with complex coalitions for which defenses could be essential for stability. Current hit-to-kill interceptor and radar and infrared detection, track, and discrimination technology should suffice for limited threats, but it is necessary to meet those threats in time while maintaining growth potential for the more sophisticated threats likely to follow. National Missile Defense faces a confusing array of threats, programs, and alternatives, but the technologies in development are clearly an appropriate first step towards any of them. They are likely to succeed in the near term; the challenge is to retain flexibility to provide needed options in the mid and long terms.

  9. Missile Diaphragmatic Injuries: Kashmir Experience

    PubMed Central

    Lone, Reyaz A; Akbar, Bhat M; Sharma, ML; Lateef, Wani M; Ahangar, AG; Lone, GN; Dar, A M; Singh, Shyam; Shah, Mubbashir; Hussain, Zahur; Irshad, Ifat; Rasool, Fouzia

    2009-01-01

    Background: Importance of repairing a diaphragmatic tear due to a missile injury cannot be overemphasized. Even a small diaphragmatic rent should be repaired because of morbidity and mortality caused by subsequent herniation and strangulation. Methods: Fifty-three cases with diaphragmatic injuries caused by penetrating missiles were studied from January 1997 to January 2007. All the patients were primarily explored either for thoracic or abdominal penetrating trauma; the diaphragmatic injury was an associated incidental intraoperative finding. Thoracotomy was performed in 18 patients, Laprotomy in 33 patients and in two patients combined thorocoabdominal approach was utilised for managing associated visceral injuries. Results: Overall mortality was 37.7%. Mortality was dependent on associated injuries of thoracic and abdominal viscera. Most patients died due to associated injuries and septicaemia. None of the patients had any sequelae of diaphragmatic repair. Conclusion: Immediate repair of diaphragmatic injury is of paramount importance to prevent subsequent complications of herniation and strangulation. PMID:21475506

  10. An overview of some monoplanar missile programs

    NASA Technical Reports Server (NTRS)

    Spearman, M. L.

    1984-01-01

    A historical review is presented of some monoplanar missile systems in which the vehicle flight control was similar to that for a conventional aircraft. The review is essentially chronological, beginning prior to World War I, and includes worldwide programs. Illustrative examples of aerodynamic research with monoplanar missiles are presented including some comparisons with cruciform missiles. Some examples of current programs are presented and some particular mission applications for monoplanar systems are discussed.

  11. An overview of some monoplanar missile programs

    NASA Technical Reports Server (NTRS)

    Spearman, M. L.

    1984-01-01

    A historical review is presented of some monoplanar missile systems in which the vehicle flight control was similar to that for a conventional aircraft. The review is essentially chronological, beginning prior to World War I, and includes worldwise programs. Illustrative examples of aerodynamic research with monoplanar missiles are presented including some comparisons with cruciform missiles. Some examples of current programs are presented and some particular mission applications for monoplanar systems are discussed.

  12. European Missile Defense and Russia

    DTIC Science & Technology

    2014-07-01

    a scheduled September 2013 summit meeting with his Russian counterpart, Vladimir Putin , “lack of prog- ress on issues such as missile defense” was...Monaghan INTRODUCTION When U.S. President Barack Obama cancelled a scheduled September 2013 summit meeting with his Russian counterpart, Vladimir Putin ...without the possibility of retaliation.12 According to then Soviet leader Yuri Andropov, who, like his successor Vladimir Putin , had moved into a

  13. Large Capacity Missile Carrier (CMX)

    DTIC Science & Technology

    1993-12-01

    is examined. It is included that the benefits of the large number of additional missiles provided by the CMX more than offsets the lost capability of...project was to exercise the ship design process from the requirements setting phase through the preliminary design, including design analysis. The...Navy to meet the challenges ensuing from this assumed global scenario. The Student Design Team was tasked to develop scenarios for the deployment of the

  14. Soviet debate on missile defense

    SciTech Connect

    Parrott, B.

    1987-04-01

    Although the Strategic Defense Initiative (SDI) is meant to cope with the danger of a Soviet nuclear attack, the recent US debate over SDI has paid surprisingly little attention to Soviet views of ballistic missile defense. Despite the existence of a substantial body of pertinent scholarship, the debate has failed to take adequate account of major changes in Soviet ballistic missile defense policy since the mid-1960s. It has also neglected the links between current Soviet military policy and broader Soviet political and economic choices. The Soviets regard SDI not as a novel undertaking to reduce the risks of nuclear war but as an extension of the geopolitical competition between the superpowers. This competition has been dominated in the 1980s, in the Soviet view, by sharply increased US assertiveness and the decline of detente. Viewing SDI as a manifestation of these general trends, Soviet decision makers find the prospect of an unregulated race in ballistic missile defenses and military space technologies deeply unsettling. The deterioration of superpower relations has raised serious doubts in Moscow about the wisdom of Soviet external policy during the 1970s and has provoked sharp internal differences over policy toward the US. Already highly suspicious of the Reagan administration, the elite is united by a general conviction that SDI is an American gambit that may ultimately undercut past Soviet strategic gains and pose a grave new threat to Soviet security. 14 references.

  15. Historical review of missile aerodynamic developments

    NASA Technical Reports Server (NTRS)

    Spearman, M. Leroy

    1989-01-01

    A comprehensive development history to about 1970 is presented for missile technologies and their associated capabilities and difficulties. Attention is given to the growth of an experimental data base for missile design, as well as to the critical early efforts to develop analytical methods applicable to missiles. Most of the important missile development efforts made during the period from the end of the Second World War to the early 1960s were based primarily on experiences gained through wind tunnel and flight testing; analytical techniques began to demonstrate their usefulness in the design process only in the late 1960s.

  16. Application of IPAD to missile design

    NASA Technical Reports Server (NTRS)

    Santa, J. E.; Whiting, T. R.

    1974-01-01

    The application of an integrated program for aerospace-vehicle design (IPAD) to the design of a tactical missile is examined. The feasibility of modifying a proposed IPAD system for aircraft design work for use in missile design is evaluated. The tasks, cost, and schedule for the modification are presented. The basic engineering design process is described, explaining how missile design is achieved through iteration of six logical problem solving functions throughout the system studies, preliminary design, and detailed design phases of a new product. Existing computer codes used in various engineering disciplines are evaluated for their applicability to IPAD in missile design.

  17. National Missile Defense: What, When, and Why?

    SciTech Connect

    Garwin, Richard L.

    2001-12-05

    The Bush Administration is steaming ahead with the deployment of the Clinton-designed mid-course hit-to-kill intercept system for national missile defense. This has serious disabilities against even the simplest strategic ballistic missiles. What is the threat to the United States from such missiles, in context? Is NMD a rational response, considering the always limited resources of the U.S. government? What are the other threats and needs? If protection is demanded against potential emerging missile states, what are the options? Answers to these questions will be provided in the talk and some are already available at the author's web site: http://www.fas.org/rlg.

  18. On information flow in relay networks

    NASA Astrophysics Data System (ADS)

    El Gamal, A.

    Preliminary investigations conducted by El Gamal and Cover (1980) have shown that a max-flow min-cut interpretation for the capacity expressions of the classes of degraded and semideterministic relay channels can be found. In this paper it is shown that such an interpretation can also be found for fairly general classes of discrete memoryless relay networks. Cover and El Gamal (1979) have obtained general lower and upper bounds to capacity. However, the capacity of the general relay channel is not known. Past results are here extended to establish the capacity of deterministic relay networks with no interference and degraded relay networks. A general upper bound is given to the capacity of any relay network with this upper bound being a natural generalization of Theorem 4 in the study conducted by Cover and El Gamal (1979).

  19. A new paradigm in optimal missile guidance

    NASA Astrophysics Data System (ADS)

    Morgan, Robert W.

    2007-12-01

    This dissertation investigates advanced concepts in terminal missile guidance. The terminal phase of missile guidance usually lasts less than ten seconds and calls for very accurate maneuvering to ensure intercept. Technological advancements have produced increasingly sophisticated threats that greatly reduce the effectiveness of traditional approaches to missile guidance. Because of this, terminal missile guidance is, and will remain, an important and active area of research. The complexity of the problem and the desire for an optimal solution has resulted in researchers focusing on simplistic, usually linear, models. The fruit of these endeavors has resulted in some of the world's most advanced weapons systems. Even so, the resulting guidance schemes cannot possibly counter the evolving threats that will push the system outside the linear envelope for which they were designed. The research done in this dissertation greatly extends previous research in the area of optimal missile guidance. Herein it is shown that optimal missile guidance is fundamentally a pairing of an optimal guidance strategy and an optimal control strategy. The optimal guidance strategy is determined from a missile's information constraints, which are themselves largely determined from the missile's sensors. The optimal control strategy is determined by the missile's control constraints, and works to achieve a specified guidance strategy. This dichotomy of missile guidance is demonstrated by showing that missiles having different control constraints utilize the same guidance strategy so long as the information constraints are the same. This concept has hitherto been unrecognized because of the difficulty in developing an optimal control for the nonlinear set of equations that result from control constraints. Having overcome this difficulty by indirect means, evidence of the guidance strategy paradigm emerged. The guidance strategy paradigm is used to develop two advanced guidance laws. The new

  20. The Laser Communications Relay and the Path to the Next Generation Near Earth Relay

    NASA Technical Reports Server (NTRS)

    Israel, David J.

    2015-01-01

    NASA Goddard Space Flight Center is currently developing the Laser Communications Relay Demonstration (LCRD) as a Path to the Next Generation Near Earth Space Communication Network. The current NASA Space Network or Tracking and Data Relay Satellite System is comprised of a constellation of Tracking and Data Relay Satellites (TDRS) in geosynchronous orbit and associated ground stations and operation centers. NASA is currently targeting a next generation of relay capability on orbit in the 2025 timeframe.

  1. Inhomogeneity induces relay synchronization in complex networks

    NASA Astrophysics Data System (ADS)

    Gambuzza, Lucia Valentina; Frasca, Mattia; Fortuna, Luigi; Boccaletti, Stefano

    2016-04-01

    Relay synchronization is a collective state, originally found in chains of interacting oscillators, in which uncoupled dynamical units synchronize through the action of mismatched inner nodes that relay the information but do not synchronize with them. It is demonstrated herein that relay synchronization is not limited to such simple motifs, rather it can emerge in larger and arbitrary network topologies. In particular, we show how this phenomenon can be observed in networks of chaotic systems in the presence of some mismatched units, the relay nodes, and how it is actually responsible for an enhancement of synchronization in the network.

  2. Inhomogeneity induces relay synchronization in complex networks.

    PubMed

    Gambuzza, Lucia Valentina; Frasca, Mattia; Fortuna, Luigi; Boccaletti, Stefano

    2016-04-01

    Relay synchronization is a collective state, originally found in chains of interacting oscillators, in which uncoupled dynamical units synchronize through the action of mismatched inner nodes that relay the information but do not synchronize with them. It is demonstrated herein that relay synchronization is not limited to such simple motifs, rather it can emerge in larger and arbitrary network topologies. In particular, we show how this phenomenon can be observed in networks of chaotic systems in the presence of some mismatched units, the relay nodes, and how it is actually responsible for an enhancement of synchronization in the network.

  3. 78 FR 40407 - Structure and Practices of the Video Relay Service Program: Telecommunications Relay Services and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-05

    ... COMMISSION 47 CFR Part 64 Structure and Practices of the Video Relay Service Program: Telecommunications... mechanism for research and development, TRS Fund contribution calculations and reporting method, allowing... Commission's Structure and Practices of the Video Relay Service Program; Telecommunications Relay Services...

  4. 77 FR 43538 - Misuse of Internet Protocol (IP) Relay Service; Telecommunications Relay Services and Speech-to...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-25

    ... COMMISSION 47 CFR Part 64 Misuse of Internet Protocol (IP) Relay Service; Telecommunications Relay Services... prohibits Internet-Protocol (IP) Relay providers from handling non- emergency calls made by new IP Relay... summary of the Commission's Misuse of Internet Protocol (IP) Relay Service; Telecommunications...

  5. 49 CFR 236.311 - Signal control circuits, selection through track relays or devices functioning as track relays...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... at restricted speed” shall be selected through track relays, or through devices that function...

  6. 49 CFR 236.311 - Signal control circuits, selection through track relays or devices functioning as track relays...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... at restricted speed” shall be selected through track relays, or through devices that function...

  7. 49 CFR 236.311 - Signal control circuits, selection through track relays or devices functioning as track relays...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... at restricted speed” shall be selected through track relays, or through devices that function...

  8. 49 CFR 236.311 - Signal control circuits, selection through track relays or devices functioning as track relays...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... at restricted speed” shall be selected through track relays, or through devices that function...

  9. 49 CFR 236.311 - Signal control circuits, selection through track relays or devices functioning as track relays...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... relays or devices functioning as track relays and through signal mechanism contacts and time releases at... at restricted speed” shall be selected through track relays, or through devices that function...

  10. Collaborative mission planning for UAV cluster to optimize relay distance

    NASA Astrophysics Data System (ADS)

    Tanil, Cagatay; Warty, Chirag; Obiedat, Esam

    Unmanned Aerial Vehicles (UAVs) coordinated path planning and intercommunication for visual exploration of a geographical region has recently become crucial. Multiple UAVs cover larger area than a single UAV and eliminate blind spots. To improve the surveillance, survivability and quality of the communication, we propose two algorithms for the route planning of UAV cluster operated in obstacle rich environment: (i) Multiple Population Genetic Algorithm (MPGA) (ii) Relay Selection Criteria (RSC). The main objective of MPGA is to minimize the total mission time while maintaining an optimal distance for communication between the neighboring nodes. MPGA utilizes evolutionary speciation techniques with a novel Feasible Population Creation Method (FPCM) and enhanced Inter-species Crossover Mechanism (ISCM) to obtain diversified routes in remarkably short time. In obtaining collision-free optimum paths, UAVs are subjected to constraints such as limited communication range, maximum maneuverability and fuel capacity. In addition to the path planning, RSC is developed for selection of UAVs relay nodes that is based on the location of the relay relative to source and destination. It is crucial since the Bit Error Rate (BER) performance of the link significantly depends on the location of the selected relay. In this paper, path planning and relay allocation algorithms are combined to have a seamless high quality monitoring of the region and to provide superior Quality of Service (QoS) for audio-video applications. Also, simulations in different operation zones with a cluster of up to six UAVs are performed to verify the feasibility of the proposed algorithms both in optimality and computation time.

  11. Principles of Guided Missiles and Nuclear Weapons.

    ERIC Educational Resources Information Center

    Naval Personnel Program Support Activity, Washington, DC.

    Fundamentals of missile and nuclear weapons systems are presented in this book which is primarily prepared as the second text of a three-volume series for students of the Navy Reserve Officers' Training Corps and the Officer Candidate School. Following an introduction to guided missiles and nuclear physics, basic principles and theories are…

  12. Soviet Concepts of Ballistic Missile Defense

    DTIC Science & Technology

    1988-06-01

    Gary Powers [Ref. 2:p. 191]. Sary Shagan is also located about a thousand miles downrange from the ballistic missile test center at Kapustin Yar. In...late 1961 the Soviet Union conducted a series of atmospheric nuclear tests, during which missiles were launched from Kapustin Yar towards an impact area

  13. 15 CFR 742.5 - Missile technology.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... systems (including ballistic missile systems, space launch vehicles, and sounding rockets) and unmanned... § 746.3 of the EAR for definition of a “ballistic missile” to be exported or reexported to Iraq. (b... 15 Commerce and Foreign Trade 2 2012-01-01 2012-01-01 false Missile technology. 742.5 Section...

  14. 15 CFR 742.5 - Missile technology.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... systems (including ballistic missile systems, space launch vehicles, and sounding rockets) and unmanned... § 746.3 of the EAR for definition of a “ballistic missile” to be exported or reexported to Iraq. (b... 15 Commerce and Foreign Trade 2 2013-01-01 2013-01-01 false Missile technology. 742.5 Section...

  15. A model of thalamocortical relay cells.

    PubMed

    Rhodes, Paul A; Llinás, Rodolfo

    2005-06-15

    It is well established that the main intrinsic electrophysiological properties of thalamocortical relay cells, production of a low threshold burst upon release from hyperpolarized potential and production of a train of single spikes following stimulation from depolarized potentials, can be readily modelled using a single compartment. There is, however, another less well explored intrinsic electrophysiological characteristic of relay cells for which models have not yet accounted: at somatic potentials near spike threshold, relay cells produce a fast ragged high threshold oscillation in somatic voltage. Optical [Ca(2+)] imaging and pharmacological tests indicate that this oscillation correlates with a high threshold Ca(2+) current in the dendrites. Here we present the development of a new compartment model of the thalamic relay cell guided by the simultaneous constraints that it must produce the familiar regular spiking relay mode and low threshold rebound bursts which characterize these cells, as well as the less-studied fast oscillation occurring at near-threshold somatic potentials. We arrive at a model cell which is capable of the production of isolated high threshold Ca(2+) spikes in distal branch segments, driven by a rapidly inactivating intermediate threshold Ca(2+) channel. Further, the model produces the low threshold spike behaviour of the relay cell without requiring high T-current density in the distal dendritic segments. The results thus support a new picture of the dendritic tree of relay cells which may have implications for the manner in which thalamic relay cells integrate descending input from the cortex.

  16. An adaptive out-of-step relay

    SciTech Connect

    Centeno, V.; Phadke, A.G.; Edris, A.; Benton, J.; Gaudi, M.; Michel, G.

    1997-01-01

    The paper describes the development of an adaptive out-of-step relay, from the formulation of its concept to its field implementation at the Florida-Georgia interface. Adaptive relaying seeks to make adjustments to the relay characteristics as system conditions change, thereby making the relay more attuned to the prevailing power system conditions. The work described here began as a theoretical examination of the out-of-step relaying application, its possible shortcomings, and the opportunities to make adaptive improvements. It is shown that for a system that behaves primarily as a two-machine power system, the out-of-step relay could be made more secure by applying the principle of equal area criterion. The paper describes the theory of such a relay, its hardware configuration, and the system as it is installed in the field. The newly developed technology of synchronized phasor measurements plays an important role in the realization of this relay. The paper includes a summary of the field experience gathered over a period of one year.

  17. 3. View from missile site control building (southeast to northwest) ...

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

    3. View from missile site control building (southeast to northwest) of missile launch area showing universal missile building on left and warhead handling building in background. - Stanley R. Mickelsen Safeguard Complex, Missile Launch Area, Within Exclusion Area, Nekoma, Cavalier County, ND

  18. Developing CMMCA Flight Profiles for Cruise Missile Tracking

    DTIC Science & Technology

    1992-03-01

    The Air Force has recently acquired two aircraft dedicated for cruise missile tracking. These aircraft, known as the Cruise Missile Mission Control ... Aircraft (CMMCA), are responsible for collecting data from the missile and United States. Due to tracking and positively controlling the missile during

  19. THIRD LEVEL OF MISSILE LAB (SECOND FLOOR OF BUILDING) SHOWING ...

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

    THIRD LEVEL OF MISSILE LAB (SECOND FLOOR OF BUILDING) SHOWING MISSILE TUBE. VIEW FACING SOUTH - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  20. OVERVIEW OF FOURTH LEVEL OF MISSILE LAB (ROOFTOP LEVEL OF ...

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

    OVERVIEW OF FOURTH LEVEL OF MISSILE LAB (ROOFTOP LEVEL OF BUILDING) SHOWING TOP OF MISSILE TUBE. VIEW FACING WEST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  1. A Novel Cooperative Relaying Network Scheme with Inter-Relay Data Exchange

    NASA Astrophysics Data System (ADS)

    Farès, Salma Ait; Adachi, Fumiyuki; Kudoh, Eisuke

    In this paper, we propose a novel scheme of cooperative relaying network based on data exchange between relays before forwarding their received data to destination. This inter-relay data exchange step is done during an additional middle-slot in order to enhance the transmit signals from relays to the destination under low transmit power condition. To reduce the propagation errors between relays as well as the required transmit power during this data exchange, only the relay possessing the highest SNR is engaged into exchanging data by forwarding its received signal to the other relays. As for the remaining non-selected relays, i.e. with low SNR, the transmitted signal is estimated by using both signals received separately at different time slots (i.e., 1st and 2nd slot) from source and the ‘best’ selected relay, respectively, emulating virtual antenna array where appropriate weights for the antenna array are developed. In addition, we investigate distributed transmit beamforming and maximum ratio combining at the relays and the destination, respectively, to combine coherently the received signals. At the relay optimal location and for low SNR condition, the proposed method has significant better outage behavior and average throughput than conventional methods using one or two time slots for transmission.

  2. Joint Source-Relay Design for Full-Duplex MIMO AF Relay Systems

    NASA Astrophysics Data System (ADS)

    Shi, Qingjiang; Hong, Mingyi; Gao, Xiqi; Song, Enbin; Cai, Yunlong; Xu, Weiqiang

    2016-12-01

    The performance of full-duplex (FD) relay systems can be greatly impacted by the self-interference (SI) at relays. By exploiting multi-antenna in FD relay systems, the spectral efficiency of FD relay systems can be enhanced through spatial SI mitigation. This paper studies joint source transmit beamforming and relay processing to achieve rate maximization for FD MIMO amplify-and-forward (AF) relay systems with consideration of relay processing delay. The problem is difficult to solve due mainly to the SI constraint induced by the relay processing delay. In this paper, we first present a sufficient condition under which the relay amplification matrix has rank one structure. Then, for the case of rank one amplification matrix, the rate maximization problem is equivalently simplified into an unconstrained problem which can be locally solved using gradient ascent method. Next, we propose a penalty-based algorithmic framework, called P-BSUM, for a class of constrained optimization problems which have difficult equality constraints in addition to some convex constraints. By rewriting the rate maximization problem with a set of auxiliary variables, we apply the P-BSUM algorithm to the rate maximization problem in the general case. Finally, numerical results validate the efficiency of the proposed algorithms and show that the joint source-relay design approach under the rank one assumption could be strictly suboptimal as compared to the P-BSUM-based joint source-relay design approach.

  3. Incremental Relaying, Fresh Signal Makes Better Decision

    NASA Astrophysics Data System (ADS)

    Tin, Luu Quoc; Kong, Hyung Yun

    In terms of outage behavior, it has been shown that incremental relaying achieves the best performance among cooperative diversity protocols such as: Amplify-And-Forward (AF), Decode-And-Forward (DF), and Selection Decode-And-Forward (SDF). Exploiting a limited feedback from the destination, incremental relaying lets the relay forward the signal received from the source whenever an error happens at the destination, then, the signals from both the source and the relay are combined to make a decision. Noticing that the signal from the source, indicated by the error, is detrimental, we propose a new scheme not using that signal but only making a decision based on the fresh signal from the relay. Large performance improvement and complexity reduction are attained as we show in the analysis and simulation results. Theoretical results are derived and shown to match with the simulation counterparts.

  4. Exploiting Outage and Error Probability of Cooperative Incremental Relaying in Underwater Wireless Sensor Networks.

    PubMed

    Nasir, Hina; Javaid, Nadeem; Sher, Muhammad; Qasim, Umar; Khan, Zahoor Ali; Alrajeh, Nabil; Niaz, Iftikhar Azim

    2016-07-12

    This paper embeds a bi-fold contribution for Underwater Wireless Sensor Networks (UWSNs); performance analysis of incremental relaying in terms of outage and error probability, and based on the analysis proposition of two new cooperative routing protocols. Subject to the first contribution, a three step procedure is carried out; a system model is presented, the number of available relays are determined, and based on cooperative incremental retransmission methodology, closed-form expressions for outage and error probability are derived. Subject to the second contribution, Adaptive Cooperation in Energy (ACE) efficient depth based routing and Enhanced-ACE (E-ACE) are presented. In the proposed model, feedback mechanism indicates success or failure of data transmission. If direct transmission is successful, there is no need for relaying by cooperative relay nodes. In case of failure, all the available relays retransmit the data one by one till the desired signal quality is achieved at destination. Simulation results show that the ACE and E-ACE significantly improves network performance, i.e., throughput, when compared with other incremental relaying protocols like Cooperative Automatic Repeat reQuest (CARQ). E-ACE and ACE achieve 69% and 63% more throughput respectively as compared to CARQ in hard underwater environment.

  5. Exploiting Outage and Error Probability of Cooperative Incremental Relaying in Underwater Wireless Sensor Networks

    PubMed Central

    Nasir, Hina; Javaid, Nadeem; Sher, Muhammad; Qasim, Umar; Khan, Zahoor Ali; Alrajeh, Nabil; Niaz, Iftikhar Azim

    2016-01-01

    This paper embeds a bi-fold contribution for Underwater Wireless Sensor Networks (UWSNs); performance analysis of incremental relaying in terms of outage and error probability, and based on the analysis proposition of two new cooperative routing protocols. Subject to the first contribution, a three step procedure is carried out; a system model is presented, the number of available relays are determined, and based on cooperative incremental retransmission methodology, closed-form expressions for outage and error probability are derived. Subject to the second contribution, Adaptive Cooperation in Energy (ACE) efficient depth based routing and Enhanced-ACE (E-ACE) are presented. In the proposed model, feedback mechanism indicates success or failure of data transmission. If direct transmission is successful, there is no need for relaying by cooperative relay nodes. In case of failure, all the available relays retransmit the data one by one till the desired signal quality is achieved at destination. Simulation results show that the ACE and E-ACE significantly improves network performance, i.e., throughput, when compared with other incremental relaying protocols like Cooperative Automatic Repeat reQuest (CARQ). E-ACE and ACE achieve 69% and 63% more throughput respectively as compared to CARQ in hard underwater environment. PMID:27420061

  6. Ballistic Missile Defense System Transition and Transfer Process from Missile Defense Agency to the Army - Innovative or Dysfunctional?

    DTIC Science & Technology

    2010-04-14

    TRANSFER PROCESS FROM MISSILE DEFENSE AGENCY TO THE ARMY– INNOVATIVE OR DYSFUNCTIONAL? BY LIEUTENANT COLONEL SCOTT C. ARMSTRONG United States Army...5a. CONTRACT NUMBER Ballistic Missile Defense System Transition and Transfer Process from Missile Defense Agency to the Army – Innovative or...TRANSITION AND TRANSFER PROCESS FROM MISSILE DEFENSE AGENCY TO THE ARMY— INNOVATIVE OR DYSFUNCTIONAL? by Lieutenant Colonel Scott C. Armstrong

  7. POLARIS MISSILE DISPLAY AT THE USS BOWFIN MUSEUM AT PEARL ...

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

    POLARIS MISSILE DISPLAY AT THE USS BOWFIN MUSEUM AT PEARL HARBOR. POLARIS A1 MISSILE IS ON THE LEFT (IN FOREGROUND) AND POLARIS A3 MISSILE IS ON THE RIGHT. VIEW FACING SOUTHEAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  8. Laser Options for National Missile Defense

    DTIC Science & Technology

    1998-04-01

    Army’s High-Energy Laser Systems Test Facility at the White Sands Missile Range can produce a DF laser output of 2.2 MW.11 MIRACL has also helped...Laser System Test Facility ( White Sands Missile Range, NM) HF Hydrogen Fluoride laser HPL High Power Laser IR Infrared Kj Kilojoule (1000 joules or 1000...Security Strategy for a New Century, (The White House, May 1997), 6. 4 Ibid., 14. 5 Ibid., 14. 6 Robert Braham, et al., “Ballistic Missile Defense: its

  9. Spin Stabilized Impulsively Controlled Missile (SSICM)

    NASA Astrophysics Data System (ADS)

    Crawford, J. I.; Howell, W. M.

    1985-12-01

    This patent is for the Spin Stabilized Impulsively Controlled Missile (SSICM). SSICM is a missile configuration which employs spin stabilization, nutational motion, and impulsive thrusting, and a body mounted passive or semiactive sensor to achieve very small miss distances against a high speed moving target. SSICM does not contain an autopilot, control surfaces, a control actuation system, nor sensor stabilization gimbals. SSICM spins at a rate sufficient to provide frequency separation between body motions and inertial target motion. Its impulsive thrusters provide near instantaneous changes in lateral velocity, whereas conventional missiles require a significant time delay to achieve lateral acceleration.

  10. Implications of defenses against tactical ballistic missiles

    SciTech Connect

    Flax, A.

    1994-05-01

    The growing number of short- to medium-range ballistic missiles (SMBMs) in the inventories of many smaller states that have had recent or less recent armed conflicts with one another has been a source of concern to many countries. Inevitably this concern over ballistic missiles had been linked to their use as delivery vehicles for {open_quotes}weapons of mass destruction{close_quotes}, a category that now includes nuclear, chemical and biological weapons. But it can be argued that this categorization is not particularly useful as a point of departure for discussions of ballistic missile defense (BMD) against SMBMs.

  11. Missile rolling tail brake torque system. [simulating bearing friction on canard controlled missiles

    NASA Technical Reports Server (NTRS)

    Davis, W. T. (Inventor)

    1984-01-01

    Apparatus for simulating varying levels of friction in the bearings of a free rolling tail afterbody on a canard-controlled missile to determine friction effects on aerodynamic control characteristics is described. A ring located between the missile body and the afterbody is utilized in a servo system to create varying levels of friction between the missile body and the afterbody to simulate bearing friction.

  12. Evolution of a radio communication relay system

    NASA Astrophysics Data System (ADS)

    Nguyen, Hoa G.; Pezeshkian, Narek; Hart, Abraham; Burmeister, Aaron; Holz, Kevin; Neff, Joseph; Roth, Leif

    2013-05-01

    Providing long-distance non-line-of-sight control for unmanned ground robots has long been recognized as a problem, considering the nature of the required high-bandwidth radio links. In the early 2000s, the DARPA Mobile Autonomous Robot Software (MARS) program funded the Space and Naval Warfare Systems Center (SSC) Pacific to demonstrate a capability for autonomous mobile communication relaying on a number of Pioneer laboratory robots. This effort also resulted in the development of ad hoc networking radios and software that were later leveraged in the development of a more practical and logistically simpler system, the Automatically Deployed Communication Relays (ADCR). Funded by the Joint Ground Robotics Enterprise and internally by SSC Pacific, several generations of ADCR systems introduced increasingly more capable hardware and software for automatic maintenance of communication links through deployment of static relay nodes from mobile robots. This capability was finally tapped in 2010 to fulfill an urgent need from theater. 243 kits of ruggedized, robot-deployable communication relays were produced and sent to Afghanistan to extend the range of EOD and tactical ground robots in 2012. This paper provides a summary of the evolution of the radio relay technology at SSC Pacific, and then focuses on the latest two stages, the Manually-Deployed Communication Relays and the latest effort to automate the deployment of these ruggedized and fielded relay nodes.

  13. Defending against ballistic missile attacks

    SciTech Connect

    Frelk, J.J.; Tait, G.E.

    1990-01-01

    This book is a compendium of information on the proliferation of ballistic missiles and other defense issues. This volume describes recent SDI advances in crystal clear language. It explains how the marriage of ultra-compact electronics and rocketry has created the smart bullet or brilliant pebble--a projectile with a tiny but powerful compute brain. The brilliant pebble tracks it target by sensing the heat the target emits, as a snake does when tracking a small mammal. Then, guided by its miniaturized computer brain, the brilliant pebble steers itself into the target and destroys it by force of the impact. In this latest form, the brilliant pebble even has the ability to take sightings on the stars, setting its course by celestial navigation.

  14. New static relay for transmission line protection

    SciTech Connect

    Andrichak, J.G.; Massey, W.A.; Patterson, R.C.

    1981-01-01

    A new static ac voltage relay is described which meets the requirements of critical applications. This Static Line Voltage (SLV) relay consists of three independently adjustable detectors, each of which can be operated in the undervoltage or overvoltage mode. Each detector has a dropout to pickup ratio of 99 percent, and a high degree of immunity to harmonics (less than 3 percent variation in operating point with a voltage waveform containing 50 percent third harmonic). The outputs of the individual detectors are user programmable in the type SLV relay to provide AND, OR, or other logical combinations of output contact wiring to the external control circuits. 2 refs.

  15. Lightweight Distance Bounding Protocol against Relay Attacks

    NASA Astrophysics Data System (ADS)

    Kim, Jin Seok; Cho, Kookrae; Yum, Dae Hyun; Hong, Sung Je; Lee, Pil Joong

    Traditional authentication protocols are based on cryptographic techniques to achieve identity verification. Distance bounding protocols are an enhanced type of authentication protocol built upon both signal traversal time measurement and cryptographic techniques to accomplish distance verification as well as identity verification. A distance bounding protocol is usually designed to defend against the relay attack and the distance fraud attack. As there are applications to which the distance fraud attack is not a serious threat, we propose a streamlined distance bounding protocol that focuses on the relay attack. The proposed protocol is more efficient than previous protocols and has a low false acceptance rate under the relay attack.

  16. 15 CFR 742.5 - Missile technology.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... systems (including ballistic missile systems, space launch vehicles, and sounding rockets) and unmanned... § 746.3 of the EAR for definition of a “ballistic missile” to be exported or reexported to Iraq. (b...

  17. 15 CFR 742.5 - Missile technology.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... Country Chart (see Supplement No. 1 to part 738 of the EAR). (2) The term “missiles” is defined as rocket systems (including ballistic missile systems, space launch vehicles, and sounding rockets) and unmanned...

  18. National Missile Defense: What, When and Why?

    SciTech Connect

    Garwin, Richard L

    2009-12-05

    The Bush Administration is steaming ahead with the deployment of the Clinton-designed mid-course hit-to-kill intercept system for national missile defense. This has serious disabilities against even the simplest strategic ballistic missiles. What is the threat to the United States from such missiles, in context? Is NMD a rational response, considering the always limited resources of the U.S. government? What are the other threats and needs? If protection is demanded against potential emerging missile states, what are the options? Answers to these questions will be provided in the talk and some are already available at the author’s web site: http://www.fas.org/rlg.

  19. [Traumatology due to ancient lead missile projectiles].

    PubMed

    Moog, Ferdinand Peter

    2002-01-01

    The lead missiles of slingers in antiquity, known as glans or molybdis, are widely considered to have been very dangerous projectiles of the ancient armies. Ballistic investigations and results of experimental archaeology seem to confirm this. However, the findings of medical history concerning these missiles disagree with this view. In ancient medical texts these missiles are only mentioned sporadically, as in Celsus or Paul of Aigina, and wounds caused by them are merely discussed incidentally. There is so far no evidence at all on them in palaeopathology. It is undisputed however that in individual cases these missiles were able to cause serious injuries, especially when they hit unprotected parts of the body. Accordingly, their main effect seems to have consisted in the intimidation of the enemy.

  20. 49 CFR 236.52 - Relayed cut-section.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Relayed cut-section. 236.52 Section 236.52...: All Systems Track Circuits § 236.52 Relayed cut-section. Where relayed cut-section is used in... shall be open and the track circuit shunted when the track relay at such cut-section is in deenergized...

  1. 49 CFR 236.52 - Relayed cut-section.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Relayed cut-section. 236.52 Section 236.52...: All Systems Track Circuits § 236.52 Relayed cut-section. Where relayed cut-section is used in... shall be open and the track circuit shunted when the track relay at such cut-section is in deenergized...

  2. 49 CFR 236.52 - Relayed cut-section.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Relayed cut-section. 236.52 Section 236.52...: All Systems Track Circuits § 236.52 Relayed cut-section. Where relayed cut-section is used in... shall be open and the track circuit shunted when the track relay at such cut-section is in deenergized...

  3. 49 CFR 236.52 - Relayed cut-section.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Relayed cut-section. 236.52 Section 236.52...: All Systems Track Circuits § 236.52 Relayed cut-section. Where relayed cut-section is used in... shall be open and the track circuit shunted when the track relay at such cut-section is in deenergized...

  4. 49 CFR 236.52 - Relayed cut-section.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Relayed cut-section. 236.52 Section 236.52...: All Systems Track Circuits § 236.52 Relayed cut-section. Where relayed cut-section is used in... shall be open and the track circuit shunted when the track relay at such cut-section is in deenergized...

  5. 49 CFR 234.265 - Timing relays and timing devices.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Timing relays and timing devices. 234.265 Section....265 Timing relays and timing devices. Each timing relay and timing device shall be tested at least... or marked on the timing relay or timing device. Timing devices which perform internal...

  6. 49 CFR 234.265 - Timing relays and timing devices.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Timing relays and timing devices. 234.265 Section....265 Timing relays and timing devices. Each timing relay and timing device shall be tested at least... or marked on the timing relay or timing device. Timing devices which perform internal...

  7. 49 CFR 234.265 - Timing relays and timing devices.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Timing relays and timing devices. 234.265 Section....265 Timing relays and timing devices. Each timing relay and timing device shall be tested at least... or marked on the timing relay or timing device. Timing devices which perform internal...

  8. Joint Theater Missile Defense. An Army Assessment

    DTIC Science & Technology

    1993-06-04

    joint force commander’s (JFC’s) JTMD plans. As part of the JTMD scheme of operations, ground maneuver forces ( armor , infantry, Army aviation, and...elements must be given greater importance for deployment. The requirement to push armor -heavy forces forward dictated that many air defense 90 fire...Defenses Aaainst Balistic Missile Attack: Now, More Then Ever, 4 Mar 91. Further development of the need to priotect against this missile threat is

  9. Design trade-offs for homing missiles

    NASA Astrophysics Data System (ADS)

    Spencer, Allen; Moore, William

    1992-05-01

    Major design considerations, trade-offs and technology issues for future hypervelocity, anti-missile interceptors are presented in an overview format. Two classes of interceptors are considered: a low altitude interceptor using an active radar seeker for defense against tactical ballistic missiles (TBMs) and a higher altitude interceptor using a passive infra-red seeker for defense against ICBMs. Considerations are presented in the areas of mission requirements, seeker selection, aerodynamic and aerothermal environments, control systems, and guidance performance.

  10. 2. Missile transfer building, interior, transporter/erector on left, storage and ...

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

    2. Missile transfer building, interior, transporter/erector on left, storage and shipping container, ballistic missile (SSCBM) containing minuteman II missile on right - Ellsworth Air Force Base, Delta Flight, Missile Roll Transfer Building, 920 Kennedy Road, Interior, Jackson County, SD

  11. 76 FR 45783 - Missile Defense Advisory Committee; Notice of Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-01

    ... scheduled for classified discussion include, but are not limited to briefings on Ballistic Missile Defense...; Ballistic Missile Defense Strategic Issues; Annual Ethics Training; Annual Security Refresher; Missile... of the Secretary Missile Defense Advisory Committee; Notice of Closed Meeting AGENCY: Department...

  12. 75 FR 77848 - Closed Meeting of the Missile Defense Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-14

    ... receive classified information in support of the Fiscal Year 2011 United States Ballistic Missile Defense... to briefings on Technical Ballistic Missile Defense Cooperation; Joint Missile Defense Immersion and Collaboration; Ballistic Missile Defense Situational Awareness Capability; Analysis on Integration of...

  13. 76 FR 71556 - Missile Defense Advisory Committee; Notice of Closed Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-18

    ... Program Objective Memorandum 2013 to 2017; Ballistic Missile Defense Strategic Issues and Future... of the Secretary Missile Defense Advisory Committee; Notice of Closed Meeting AGENCY: Missile Defense... that the following Federal advisory committee meeting of the Missile Defense Advisory Committee...

  14. Capacity Analysis of Cooperative Relaying Networks with Adaptive Relaying Scheme Selection

    NASA Astrophysics Data System (ADS)

    Teshima, Kunihiko; Yamamoto, Koji; Murata, Hidekazu; Yoshida, Susumu

    In the present paper, the performance of cooperative relaying networks with adaptive relaying scheme selection is analyzed. Cooperative relaying is a new technique to achieve spatial diversity gain by using neighboring stations. However, when multiple stations transmit simultaneously, the number of interference signals increases. Therefore, the introduction of cooperative relaying in radio communication systems does not always increase the network capacity due to the co-channel interference. Therefore, in order to achieve high spectral efficiency, it is necessary to select cooperative relaying or non-cooperative relaying adaptively. Assuming both centralized and decentralized adaptive controls, the spectrum efficiency is evaluated. The performance under decentralized control is evaluated using a game-theoretic approach. Simulation results show that the introduction of cooperative relaying with centralized control always increases the spectral efficiency. On the other hand, Simulation results also show that, when each source selects a relaying scheme independently and selfishly to maximize its own spectral efficiency, the introduction of the cooperative relaying may reduce the spectral efficiency due to the increase in the number of interference signals.

  15. Using Internet Relay Chat in Teaching Chinese.

    ERIC Educational Resources Information Center

    Xie, Tianwei

    2002-01-01

    Explored the feasibility of using Internet Relay Chat (IRC) to facilitate Chinese language teaching and learning. Describes procedures for organizing and conducting chat sessions and discusses the benefits and problems of using IRC. (Author/VWL)

  16. Force, Surface Pressure and Flowfield Measurements on Slender Missile Configurations at Supersonic Speeds

    NASA Technical Reports Server (NTRS)

    Birch, T. J.; Allen, J. M.; Wilcox, F. J.

    2000-01-01

    This paper describes a series of wind tunnel experiments carried out with the aim of providing data suitable for evaluating the performance of Computational Fluid Dynamics (CFD) codes. The configurations and flow conditions studied are most relevant to slender supersonic missiles. However, the data obtained, which includes forces and moments, surface pressures, flowfield surveys and a selection of flow visualization images, should he of interest to other CFD practitioners. Results for three test cases are presented and discussed in this paper. These cases have been the subject of a collaborative study concerned with the evaluation of Navier-Stokes solvers for missiles, carried out under the auspices of The Technical Cooperation Programme (TTCP).

  17. Variable centroid control scheme over hypersonic tactical missile

    NASA Astrophysics Data System (ADS)

    Yi, Yan; Zhou, Fengqi

    2003-12-01

    This paper presents a brand-new tactical missile control scheme—variable centroid vector control according to the international highlight in the field of missile control and the research status of hypersonic missile control in China. Four critical problems related with the new control method are included: improving phase control in the spinning missile single-channel control; establishing variable centroid controlled spinning missile attitude dynamics equations; analyzing variable centroid control strategies and analyzing the stability of the controlled missile and implementing robust control. The achievements and results obtained are valuable and helpful to the theoretical explorations and engineering applications.

  18. Trident II (D-5) Sea Launched Ballistic Missile UGM 133A (Trident II Missile)

    DTIC Science & Technology

    2015-12-01

    Selected Acquisition Report (SAR) RCS: DD-A&T(Q&A)823-178 Trident II (D-5) Sea-Launched Ballistic Missile UGM 133A (Trident II Missile) As of FY...Executive Officer PM - Program Manager POE - Program Office Estimate RDT&E - Research, Development, Test, and Evaluation SAR - Selected Acquisition

  19. Cardiorespiratory strain of a five day jogging relay.

    PubMed Central

    Oksa, J; Rissanen, S; Martikkala, V

    1995-01-01

    The heart rates of 14 voluntary subjects (seven male and seven females) participating in a 5 d jogging relay were recorded. The jogging speed was controlled at 3.0 m.s-1 on average. The heart rate measurements were related to cardiorespiratory responses obtained during VO2max test on a treadmill. The mean (s.d.) VO2max values were 53(2) and 48(2) ml.kg-1.min-1 and the anaerobic threshold was 42(1) and 38(2) ml.kg-1.min-1 for male and female subjects respectively. During the relay the mean(s.d) heart rate values of male and female subjects were 150(1), and 167(3) beats.min-1 (P < 0.001), corresponding to 68(1) and 76(2)% VO2max (P < 0.01) as calculated from the individual HR/VO2 regression equations. The jogging time above anaerobic threshold heart rate level was 9(3)% for the males and 43(7)% for the females (P < 0.001) of the total jogging time. The results indicate that even in a leisure oriented jogging event, cardiorespiratory strain can be rather high and that the strain can be significantly higher for female than for male subjects. The determination of the anaerobic threshold as well as VO2max is important when quantifying the level of cardiorespiratory strain of exercise. PMID:8800848

  20. Airborne Relay-Based Regional Positioning System

    PubMed Central

    Lee, Kyuman; Noh, Hongjun; Lim, Jaesung

    2015-01-01

    Ground-based pseudolite systems have some limitations, such as low vertical accuracy, multipath effects and near-far problems. These problems are not significant in airborne-based pseudolite systems. However, the monitoring of pseudolite positions is required because of the mobility of the platforms on which the pseudolites are mounted, and this causes performance degradation. To address these pseudolite system limitations, we propose an airborne relay-based regional positioning system that consists of a master station, reference stations, airborne relays and a user. In the proposed system, navigation signals are generated from the reference stations located on the ground and are relayed via the airborne relays. Unlike in conventional airborne-based systems, the user in the proposed system sequentially estimates both the locations of airborne relays and his/her own position. Therefore, a delay due to monitoring does not occur, and the accuracy is not affected by the movement of airborne relays. We conducted several simulations to evaluate the performance of the proposed system. Based on the simulation results, we demonstrated that the proposed system guarantees a higher accuracy than airborne-based pseudolite systems, and it is feasible despite the existence of clock offsets among reference stations. PMID:26029953

  1. The use of a deflectable nose on a missile as a control device

    NASA Astrophysics Data System (ADS)

    Thompson, K. D.

    1981-05-01

    Wind tunnel tests have been carried out on a blunted ogive-cylinder with a deflectable nose at Mach numbers between 0.8 and 2.0. Although the results are subject to scale effects, it appears that the deflectable nose could find use as a missile control method. The results have been applied to two missile configurations. For a long slender missile the deflectable nose produces non-linear trim curves at subsonic speeds, approaching linearity at supersonic Mach numbers. Nevertheless, worth-while trimmed incidences can be achieved. Although a deflectable nose on a 105 mm shell at subsonic speeds produces only relatively small normal force coefficients at trim, the trim curves are linear. Furthermore, it appears that when used for terminal control significant deviations in shell impact point are attainable.

  2. Physical Layer Security Using Two-Path Successive Relaying.

    PubMed

    Liau, Qian Yu; Leow, Chee Yen; Ding, Zhiguo

    2016-06-09

    Relaying is one of the useful techniques to enhance wireless physical-layer security. Existing literature shows that employing full-duplex relay instead of conventional half-duplex relay improves secrecy capacity and secrecy outage probability, but this is at the price of sophisticated implementation. As an alternative, two-path successive relaying has been proposed to emulate operation of full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. Analytical results reveal that the use of two half-duplex relays in the proposed scheme contributes towards a quadratically lower probability of interception compared to full-duplex relaying. Numerical simulations show that the proposed protocol achieves the ergodic achievable secrecy rate of full-duplex relaying while delivering the lowest probability of interception and secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes.

  3. Physical Layer Security Using Two-Path Successive Relaying

    PubMed Central

    Liau, Qian Yu; Leow, Chee Yen; Ding, Zhiguo

    2016-01-01

    Relaying is one of the useful techniques to enhance wireless physical-layer security. Existing literature shows that employing full-duplex relay instead of conventional half-duplex relay improves secrecy capacity and secrecy outage probability, but this is at the price of sophisticated implementation. As an alternative, two-path successive relaying has been proposed to emulate operation of full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. Analytical results reveal that the use of two half-duplex relays in the proposed scheme contributes towards a quadratically lower probability of interception compared to full-duplex relaying. Numerical simulations show that the proposed protocol achieves the ergodic achievable secrecy rate of full-duplex relaying while delivering the lowest probability of interception and secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes. PMID:27294924

  4. Missile captive carry monitoring using a capacitive MEMS accelerometer

    NASA Astrophysics Data System (ADS)

    Hatchell, Brian; Mauss, Fred; Santiago-Rojas, Emiliano; Amaya, Ivan; Skorpik, Jim; Silvers, Kurt; Marotta, Steve

    2010-03-01

    Military missiles are exposed to many sources of mechanical vibration that can affect system reliability, safety, and mission effectiveness. One of the most significant exposures to vibration occurs when the missile is being carried by an aviation platform, which is a condition known as captive carry. If the duration of captive carry exposure could be recorded during the missile's service life, several advantages could be realized. Missiles that have been exposed to durations outside the design envelop could be flagged or screened for maintenance or inspection; lightly exposed missiles could be selected for critical mission applications; and missile allocation to missions could be based on prior use to avoid overuse. The U. S. Army Aviation and Missile Research Development and Engineering Center (AMRDEC) has been developing health monitoring systems to assess and improve reliability of missiles during storage and field exposures. Under the direction of AMRDEC staff, engineers at the Pacific Northwest National Laboratory have developed a Captive Carry Health Monitor (CCHM) for the HELLFIRE II missile. The CCHM is an embedded usage monitoring device installed on the outer skin of the HELLFIRE II missile to record the cumulative hours the host missile has been in captive carry mode and thereby assess the overall health of the missile. This paper provides an overview of the CCHM electrical and package design, describes field testing and data analysis techniques used to identify captive carry, and discusses the potential application of missile health and usage data for real-time reliability analysis and fleet management.

  5. Performance analysis of relay subset selection for amplify-and-forward cognitive relay networks.

    PubMed

    Sultan, Kiran; Qureshi, Ijaz Mansoor; Malik, Aqdas Naveed; Zubair, Muhammad

    2014-01-01

    Cooperative communication is regarded as a key technology in wireless networks, including cognitive radio networks (CRNs), which increases the diversity order of the signal to combat the unfavorable effects of the fading channels, by allowing distributed terminals to collaborate through sophisticated signal processing. Underlay CRNs have strict interference constraints towards the secondary users (SUs) active in the frequency band of the primary users (PUs), which limits their transmit power and their coverage area. Relay selection offers a potential solution to the challenges faced by underlay networks, by selecting either single best relay or a subset of potential relay set under different design requirements and assumptions. The best relay selection schemes proposed in the literature for amplify-and-forward (AF) based underlay cognitive relay networks have been very well studied in terms of outage probability (OP) and bit error rate (BER), which is deficient in multiple relay selection schemes. The novelty of this work is to study the outage behavior of multiple relay selection in the underlay CRN and derive the closed-form expressions for the OP and BER through cumulative distribution function (CDF) of the SNR received at the destination. The effectiveness of relay subset selection is shown through simulation results.

  6. 6. PHOTOCOPY, WATER TREATMENT PUMPING AND STORAGE BUILDING, MISSILE TEST ...

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

    6. PHOTOCOPY, WATER TREATMENT PUMPING AND STORAGE BUILDING, MISSILE TEST AND ASSEMBLY BUILDING, GENERATOR BUILDING No. 3, AND WARHEADING BUILDING OF LAUNCH AREA. - NIKE Missile Base SL-40, Beck Road between Nike & M Roads, Hecker, Monroe County, IL

  7. 2. Missile Alert Facility, south side, view from baseball bleachers. ...

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

    2. Missile Alert Facility, south side, view from baseball bleachers. Lyon - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  8. An overview of NASA's role in maneuvering missile aerodynamic technology

    NASA Technical Reports Server (NTRS)

    Sawyer, W. C.; Jackson, C. M., Jr.

    1982-01-01

    This paper presents an overview of the role NASA has had and continues to pursue in providing missile aerodynamic technology. In the past, NASA has provided considerable support to the missile industry and the military. The support has generally taken the form of theoretical aerodynamic analyses, experimental studies to provide solutions for specific problems, and the documentation of existing foreign missile systems and domestic missiles. In 1975, NASA shifted its missile-related efforts in aerodynamics from this largely service role to one of conducting more basic research. The areas of research include: innovative methods for roll control of cruciform missiles, airbreathing missiles with maneuver requirements, and an advanced generation of monoplanar missiles for efficient supersonic carriage and delivery.

  9. 24. Launch Area, Missile Assembly Building, detail of original work ...

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

    24. Launch Area, Missile Assembly Building, detail of original work cabinets VIEW NORTHWEST - NIKE Missile Battery PR-79, Launch Area, East Windsor Road south of State Route 101, Foster, Providence County, RI

  10. Theater Ballistic Missile Defense: Who’s Fight Is It

    DTIC Science & Technology

    2007-11-02

    conducted as part of counterair operations; however, one mission area defense against in- flight theater ballistic missiles - remains unique. That particular...mission should be controlled by an anti-ballistic missile expert, responsible to the Area Air Defense Commander.

  11. 4. Missile Alert Facility, outside gate, view looking southwest. Thalheimer ...

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

    4. Missile Alert Facility, outside gate, view looking southwest. Thalheimer - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  12. 3. Missile Alert Facility, northwest corner, view from bleachers. Lyon ...

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

    3. Missile Alert Facility, northwest corner, view from bleachers. Lyon - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  13. 6. Missile Alert Facility, west side. Thalheimer Whiteman Air ...

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

    6. Missile Alert Facility, west side. Thalheimer - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  14. 8. Missile Alert Facility, northeast corner. Lyon Whiteman Air ...

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

    8. Missile Alert Facility, northeast corner. Lyon - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  15. 1. Missile Alert Facility, east side, view from bleachers on ...

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

    1. Missile Alert Facility, east side, view from bleachers on athletic field. Lyon - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  16. 5. Missile Alert Facility, east and north sides, looking southwest. ...

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

    5. Missile Alert Facility, east and north sides, looking southwest. Thalheimer - Whiteman Air Force Base, Oscar O-1 Minuteman Missile Alert Facility, Southeast corner of Twelfth & Vendenberg Avenues, Knob Noster, Johnson County, MO

  17. 11. View from heat sink, south oblique of missile site ...

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

    11. View from heat sink, south oblique of missile site control building - Stanley R. Mickelsen Safeguard Complex, Missile Site Control Building, Northeast of Tactical Road; southeast of Tactical Road South, Nekoma, Cavalier County, ND

  18. 5. VIEW OF MISSILE ASSEMBLY CALLED 'FIRE HOUSE,' LOOKING NORTH, ...

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

    5. VIEW OF MISSILE ASSEMBLY CALLED 'FIRE HOUSE,' LOOKING NORTH, LOCATED NEAR GATE AT ENTRANCE TO LAUNCH AREA Marilyn Ziemer, photographer, April 1988 - Los Pinetos Nike Missile Site, Santa Clara Road, Los Angeles National Forest, Sylmar, Los Angeles County, CA

  19. An overview of NASA's role in maneuvering missile aerodynamic technology

    NASA Technical Reports Server (NTRS)

    Sawyer, W. C.; Jackson, C. M., Jr.

    1982-01-01

    This paper presents an overview of the role NASA has had and continues to pursue in providing missile aerodynamic technology. In the past, NASA has provided considerable support to the missile industry and the military. The support has generally taken the form of theoretical aerodynamic analyses, experimental studies to provide solutions for specific problems, and the documentation of existing foreign missile systems and domestic missiles. In 1975, NASA shifted its missile-related efforts in aerodynamics from this largely service role to one of conducting more basic research. The areas of research include: innovative methods for roll control of cruciform missiles, airbreathing missiles with maneuver requirements, and an advanced generation of monoplanar missiles for efficient supersonic carriage and delivery.

  20. 10. Storage and shipping container, ballistic missile, mounted on ballistic ...

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

    10. Storage and shipping container, ballistic missile, mounted on ballistic missile trailer, view from left front - Ellsworth Air Force Base, Delta Flight, 10 mile radius around Exit 127 off Interstate 90, Interior, Jackson County, SD

  1. 11. Storage and shipping container, ballistic missile, mounted on ballistic ...

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

    11. Storage and shipping container, ballistic missile, mounted on ballistic missile trailer, view from left side - Ellsworth Air Force Base, Delta Flight, 10 mile radius around Exit 127 off Interstate 90, Interior, Jackson County, SD

  2. Ballistic Missile Early Warning System Clear Air Force Station, ...

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

    Ballistic Missile Early Warning System - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

  3. Effect of data latency upon missile accuracy

    NASA Astrophysics Data System (ADS)

    Monroe, L. J.

    1983-12-01

    This study examined the effect of data latency upon air-to-air guided missile accuracy. This research was done by modeling a digital guided missile, inserting the model into a computer simulation and generating miss distance statistics. The digital guided missile was modeled after the DIS microcomputer architecture. The DIS (Digital Integrating Subsystem) approach involves a number of loosely coupled microprocessors which communicate over a serial multiplex bus. It was developed at the Air Force Armament Lab., Eglin AFB, FL. The missile simulation, Tactics IV, involves three degrees of freedom and is written in FORTRAN IV. It was developed by Science Applications, Inc. in conjunction with AFWAL/FIMB, Wright Patterson AFB, OH. The results of this study indicate that typical data latency values generate only small increases in miss distance. The maximum delays tested were .01 seconds and the average increase in miss distance was 2.12 feet. Additionally, it was discovered that the transmission rate of the DIS microcomputers greatly affected miss distance. Microcomputers transmitting at 10 HZ generated large miss distances, even without data latency present. The identical missile engagements using transmission rates of 100 HZ resulted in much smaller miss distances.

  4. New infrared sensors for ballistic missile defense

    NASA Astrophysics Data System (ADS)

    Tidrow, Meimei Z.

    2005-03-01

    The MDA/AS is developing advanced capabilities in the IR sensor area for ballistic missile defense. Infrared sensors play an important role to every layer of ballistic missile defense systems. Current missile defense systems use infrared sensors with material systems such as InSb and HgCdTe. They are sufficient to counter current threat level. However, with the Missile Defense Agency"s (MDA) new capability based acquisition, the Advanced Systems (AS) of MDA is pushing the state-of-the-art of infrared technology to a higher level. The new infrared sensors will have the capability to cover a broad range of spectrum, have higher sensitivity, uniformity and operabilities, large format, multicolor, with a much better manufacturability and affordability. Examples are strained layer type-II superlattices, quantum well infrared photodetectors, HgCdTe on Si, PbSnTe, and other novel concepts. This presentation will discuss what IR sensors are used in current missile defense systems, what is new in technology development, and its system applications.

  5. DETAIL OF OPEN HATCH SHOWING INTERIOR OF MISSILE TUBE AND ...

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

    DETAIL OF OPEN HATCH SHOWING INTERIOR OF MISSILE TUBE AND OPEN HATCH AND DOOR ON OPPOSITE SIDE OF TUBE (AT THIRD LEVEL OF MISSILE LAB). VIEW FACING WEST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  6. European Missile Defense: Strategic Imperatives for NATO and Russia

    DTIC Science & Technology

    2011-03-24

    3 missile with an effective range of 2,000 km. The original Shahab - 3 missile is liquid-fueled, and almost identical to the North Korean No Dong-1...However, Iranian modifications to the Shahab - 3 missile represented a significant advancement in the domestic capabilities of their MRBM program.19...Research Project 3 . DATES COVERED (From - To) 4. TITLE AND SUBTITLE European Missile Defense: Strategic Imperatives for NATO and Russia

  7. Dr. von Braun In Front of a Display of Missiles

    NASA Technical Reports Server (NTRS)

    1960-01-01

    In this photo, Director of the US Army Ballistic Missile Agency (ABMA) Development Operations Division, Dr. Wernher von Braun, is standing before a display of Army missiles celebrating ABMA's Fourth Open House. The missiles in the background include (left to right) a satellite on a Juno II shroud with a Nike Ajax pointing left in front of a Jupiter missile. The Lacrosse is in front of the Juno II. The Nike Hercules points skyward in front of the Juno II and the Redstone.

  8. Dr. von Braun In Front of a Display of Missiles

    NASA Technical Reports Server (NTRS)

    1960-01-01

    In this photo, Director of the US Army Ballistic Missile Agency (ABMA) Development Operations Division, Dr. Wernher von Braun, is standing before a display of Army missiles celebrating ABMA's Fourth Open House. The missiles in the background include (left to right) a satellite on a Juno II shroud with a Nike Ajax pointing left in front of a Jupiter missile. The Lacrosse is in front of the Juno II. The Nike Hercules points skyward in front of the Juno II and the Redstone.

  9. VIEW OF THIRD LEVEL OF MISSILE LAB (SECOND FLOOR OF ...

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

    VIEW OF THIRD LEVEL OF MISSILE LAB (SECOND FLOOR OF BUILDING) SHOWING MISSILE TUBE IN CENTER WITH OPEN HATCH AT RIGHT. VIEW FACING NORTHEAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  10. Comparison of head-steered and aircraft-fixed infrared imagery for employing the AGM-65 Maverick missile

    NASA Astrophysics Data System (ADS)

    Osgood, Robert K.; Wells, Maxwell J.; Meador, Douglas P.

    1995-05-01

    Eight veteran USAF fighter pilots, experienced with AGM-65 Maverick air-to-ground missiles, flew a night, low-level ground attack mission in a flight simulator equipped with a helmet-mounted display (HMD). The mission was performed by delivering five Maverick missiles against ground vehicles using either an aircraft-fixed forward-looking infrared (FLIR) sensor image on a head-up display (HUD) or a head-steered FLIR as the missile aiming device. Additionally, the pilots employed their weapons by two methods: fixing and launching missiles singly or in varying numbers (multiple method). The purpose of the experiment was to determine what, if any, advantage there is to employing the AGM-65 using the HMD FLIR image to slew the missile seeker onto the target versus the conventional method of using the FLIR image displayed on the HUD. With a head-steered sensor (and fixing and launching weapons singly) subjects released their weapons quicker (14.6 second interval between launches vs. 17.1 sec.), at a higher altitude (1739 feet vs. 1603 ft.), and slightly farther from the target (3.42 nautical miles vs. 3.37 nm). Furthermore, data indicated the pilots looked farther off-boresight when searching for and locking the weapon onto a target, thereby more effectively using the full field-of-regard of the missile seeker. The participants also contributed their opinions of the advantages and disadvantages of the two mechanizations.

  11. COMPASS Final Report: Lunar Relay Satellite (LRS)

    NASA Technical Reports Server (NTRS)

    Oleson, Steven R.; McGuire, Melissa L.

    2012-01-01

    The Lunar Relay Satellite (LRS) COllaborative Modeling and Parametric Assessment of Space Systems (COMPASS) session was tasked to design a satellite to orbit in an elliptical lunar polar orbit to provide relay communications between lunar South Pole assets and the Earth. The design included a complete master equipment list, power requirement list, configuration design, and brief risk assessment and cost analysis. The LRS is a half-TDRSS sized box spacecraft, which provides communications and navigation relay between lunar outposts (via Lunar Communications Terminals (LCT)) or Sortie parties (with user radios) and large ground antennas on Earth. The LRS consists of a spacecraft containing all the communications and avionics equipment designed by NASA Jet Propulsion Laboratory s (JPL) Team X to perform the relay between lunar-based assets and the Earth. The satellite design is a standard box truss spacecraft design with a thermal control system, 1.7 m solar arrays for 1 kWe power, a 1 m diameter Ka/S band dish which provides relay communications with the LCT, and a Q-band dish for communications to/from the Earth based assets. While JPL's Team X and Goddard Space Flight Center s (GSFC) I M Design Center (IMDC) have completed two other LRS designs, this NASA Glenn Research Center (GRC) COMPASS LRS design sits between them in terms of physical size and capabilities.

  12. Quantum network with trusted and untrusted relays

    NASA Astrophysics Data System (ADS)

    Ma, Xiongfeng; Annabestani, Razieh; Fung, Chi-Hang Fred; Lo, Hoi-Kwong; Lütkenhaus, Norbert; PitkäNen, David; Razavi, Mohsen

    2012-02-01

    Quantum key distribution offers two distant users to establish a random secure key by exploiting properties of quantum mechanics, whose security has proven in theory. In practice, many lab and field demonstrations have been performed in the last 20 years. Nowadays, quantum network with quantum key distribution systems are tested around the world, such as in China, Europe, Japan and US. In this talk, I will give a brief introduction of recent development for quantum network. For the untrusted relay part, I will introduce the measurement-device-independent quantum key distribution scheme and a quantum relay with linear optics. The security of such scheme is proven without assumptions on the detection devices, where most of quantum hacking strategies are launched. This scheme can be realized with current technology. For the trusted relay part, I will introduce so-called delayed privacy amplification, with which no error correction and privacy amplification is necessarily to be performed between users and the relay. In this way, classical communications and computational power requirement on the relay site will be reduced.

  13. Missile Captive Carry Monitoring using a Capacitive MEMS Accelerometer

    SciTech Connect

    Hatchell, Brian K.; Mauss, Fredrick J.; Santiago-Rojas, Emiliano; Amaya, Ivan A.; Skorpik, James R.; Silvers, Kurt L.; Marotta, Steve

    2010-04-08

    Military missiles are exposed to many sources of mechanical vibration that can affect system reliability, safety, and mission effectiveness. One of the most significant exposures to vibration occurs when the missile is being carried by an aviation platform, which is a condition known as captive carry. If the duration of captive carry exposure could be recorded during the missile’s service life, several advantages could be realized. Missiles that have been exposed to durations outside the design envelop could be flagged or screened for maintenance or inspection; lightly exposed missiles could be selected for critical mission applications; and missile allocation to missions could be based on prior use to avoid overuse. The U. S. Army Aviation and Missile Research Development and Engineering Center (AMRDEC) has been developing health monitoring systems to assess and improve reliability of missiles during storage and field exposures. Under the direction of AMRDEC staff, engineers at the Pacific Northwest National Laboratory have developed a Captive Carry Health Monitor (CCHM) for the HELLFIRE II missile. The CCHM is an embedded usage monitoring device installed on the outer skin of the HELLFIRE II missile to record the cumulative hours the host missile has been in captive carry mode and thereby assess the overall health of the missile. This paper provides an overview of the CCHM electrical and package design, describes field testing and data analysis techniques used to identify captive carry, and discusses the potential application of missile health and usage data for real-time reliability analysis and fleet management.

  14. 22 CFR 120.29 - Missile Technology Control Regime.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Missile Technology Control Regime. 120.29... DEFINITIONS § 120.29 Missile Technology Control Regime. (a) For purposes of this subchapter, Missile Technology Control Regime (MTCR) means the policy statement between the United States, the United...

  15. 22 CFR 120.29 - Missile Technology Control Regime.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Missile Technology Control Regime. 120.29... DEFINITIONS § 120.29 Missile Technology Control Regime. (a) For purposes of this subchapter, Missile Technology Control Regime (MTCR) means the policy statement between the United States, the United Kingdom...

  16. 22 CFR 120.29 - Missile Technology Control Regime.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Missile Technology Control Regime. 120.29... DEFINITIONS § 120.29 Missile Technology Control Regime. (a) For purposes of this subchapter, Missile Technology Control Regime (MTCR) means the policy statement among the United States, the United Kingdom, the...

  17. 22 CFR 120.29 - Missile Technology Control Regime.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Missile Technology Control Regime. 120.29... DEFINITIONS § 120.29 Missile Technology Control Regime. (a) For purposes of this subchapter, Missile Technology Control Regime (MTCR) means the policy statement between the United States, the United Kingdom...

  18. 1. View from missile site control building (southeast to northwest) ...

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

    1. View from missile site control building (southeast to northwest) of universal missile building. Note earth mounding. On the far right can be seen the exit tunnel; the small "boxes" on top are the roof ventilators. This building was salvaged and sealed after site inactivation - Stanley R. Mickelsen Safeguard Complex, Universal Missile Building, Between Tactical Road South & Patrol Road, Nekoma, Cavalier County, ND

  19. Missile Datcom. Volume 2. User’s Manual

    DTIC Science & Technology

    1988-12-01

    configuration aerodynamics . This output is illustrated in Figure 36. The values are obtained by sum- ming the body- wing and tail in the presence... Missile Datcom Phase IV code which is version 12/88. The Missile Datcom computer code calculates aerodynamics and stability and control characteristics ...necessary to quickly and economically estimate the aerodynamics of a wide variety of missile configuration designs. Since

  20. OBLIQUE VIEW OF MISSILE LAB WITH CRANE SHOWING SOUTHEAST AND ...

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

    OBLIQUE VIEW OF MISSILE LAB WITH CRANE SHOWING SOUTHEAST AND SOUTHWEST SIDES. VIEW FACING NORTH/NORTHWEST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  1. 75 FR 43156 - Federal Advisory Committee; Missile Defense Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ... staff and Program Managers on the Agency's strategic perspective and the Ballistic Missile Defense..., but are not limited to briefings on the Ballistic Missile Defense Review, Early Intercept, Phased... Office of the Secretary Federal Advisory Committee; Missile Defense Advisory Committee AGENCY:...

  2. OBLIQUE VIEW OF MISSILE LAB WITH CRANE SHOWING SOUTHWEST AND ...

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

    OBLIQUE VIEW OF MISSILE LAB WITH CRANE SHOWING SOUTHWEST AND NORTHWEST SIDES. VIEW FACING EAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  3. VIEW OF MISSILE TUBE AT THE GROUND FLOOR LEVEL. VIEW ...

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

    VIEW OF MISSILE TUBE AT THE GROUND FLOOR LEVEL. VIEW FACING SOUTH - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  4. DETAIL OF INTERIOR OF MISSILE TUBE AT GROUND FLOOR LEVEL ...

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

    DETAIL OF INTERIOR OF MISSILE TUBE AT GROUND FLOOR LEVEL SHOWING AIR COMPRESSOR TANKS AND CURVING STEEL PIECE. VIEW FACING EAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  5. VIEW OF MISSILE TUBE AT THE GROUND FLOOR LEVEL. VIEW ...

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

    VIEW OF MISSILE TUBE AT THE GROUND FLOOR LEVEL. VIEW FACING EAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  6. DETAIL OF MISSILE TUBE HATCH WITH MILLED FITTINGS AT GROUND ...

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

    DETAIL OF MISSILE TUBE HATCH WITH MILLED FITTINGS AT GROUND FLOOR LEVEL. VIEW FACING EAST - U.S. Naval Base, Pearl Harbor, Ford Island Polaris Missile Lab & U.S. Fleet Ballistic Missile Submarine Training Center, Between Lexington Boulvevard and the sea plane ramps on the southwest side of Ford Island, Pearl City, Honolulu County, HI

  7. Infrared tracker for a portable missile launcher

    SciTech Connect

    Carlson, J.J.

    1993-07-13

    An infrared beam tracker is described for arrangement to a housing that is unitary with a portable missile launcher, comprising: a rotating beam splitter positioned to intercept the infrared beam passing a first portion of the beam through the beam splitter along a first direction and reflecting the remaining portion along a different direction; a first infrared detector for receiving the beam reflected portion from the beam splitter and produce electric signals responsive thereto; a second infrared detector for receiving the beam portion that passes through the beam splitter and providing electric signals responsive thereto; and means interconnected to the first and second infrared detectors and responsive to the electric signals generated by said detectors for determining errors in missile flight direction and communicating course correction information to the missile.

  8. Successful hardware-in-the-loop support of the Longbow/HELLFIRE modular missile system

    NASA Astrophysics Data System (ADS)

    Ray, Jerry A.; Larson, Gerald A.; Terry, John E.

    2000-07-01

    The Air-to-Ground Missiles Systems (AGMS) Project Management Office (PMO) chose to invest in hardware-in-the-loop (HWIL) simulation as an integral part of their Longbow/HELLFIRE (Helicopter Launched, Fire-and-Forget) Modular Missile System program throughout the development and production phases. This investment has resulted in two HWIL simulations, developed by the U.S. Army Aviation and Missile Command (AMCOM) Missile Research Development and Engineering Center, that have had unprecedented success in program support from the early development through production phases. The Millimeter Simulation System 1 (MSS-1) facility is capable of edge-of- the-envelope performance analysis and verification using high- fidelity target, background, and countermeasures signature modeling. The System Test/Acceptance Facility (STAF), developed in partnership with Redstone Technical Test Center, tests full-up missiles for production lot acceptance. Between these two facilities, HWIL simulation is responsible for pre- flight confidence testing of missile hardware and software, software independent verification and validation (IV&V) testing, comprehensive performance evaluation, component verification, production lot acceptance, and data gathering for the shelf life extension program. One payoff of the MSS-1 HWIL investment has been an extremely effective flight test program with MSS-1 receiving credit for saving three flight tests and documenting over 40 failure modes. With the advent of the Performance Based Specification, the MSS-1 has become involved in continuous verification of high level specifications since contractor controlled, low-level specifications are subject to change. The STAF has saved 8 million annually through providing a non-destructive lot acceptance-testing paradigm, and further benefited the production phase by discovering three production problems. This paper will highlight the innovative uses of HWIL simulation as utilized in the Longbow/HELLFIRE program and

  9. Tracking and data relay satellite system configuration and tradeoff study. Volume 8: Appendixes, part 1

    NASA Technical Reports Server (NTRS)

    Hill, T. E.

    1973-01-01

    The appendices to support the data involved in the design and development of the Tracking and Data Relay satellite are presented. The subjects discussed are: (1) spacecraft structural body shapes, (2) antenna configurations, (3) solar configurations, (4) telemetry equipment, and (5) reliability design practices.

  10. The new politics of missile proliferation

    SciTech Connect

    Karp, A.

    1996-10-01

    The author addresses the most consequential proliferation battle of the 1990s which occurred in Washington over the interpretation of the long-term threat to the United States from ballistic missiles. In the early 1970s, the stabilization of the US-Soviet strategic relationship led to new disputes over the other side`s future intentions, seen most graphically in Western debates over the implications of the Soviet SS-18 and SS-20 missile programs. Today, in much the same way, proliferation politics has matured to the point that surprises are few and the most challenging problem is anticipating the more distant future. Washington`s ballistic missile proliferation battle was sparked by National Intelligence Estimate (NIE) 95-19, entitled {open_quotes}Emerging Threats to North America During the Next 15 Years,{close_quotes} released by the National Intelligence Council in November 1995. This document updated the evidence of regional missile programs reviewed in a similar report issued in 1993, and recapitulated the previous finding that {open_quotes}No country, other than the major declared nuclear powers, will develop or otherwise acquire a ballistic missile in the next 15 years that could threatened the contiguous 48 states or Canada.{close_quotes} The new report confirmed what several other studies of missile proliferation had already established: that besides the five nuclear-weapon states (the United States, Russia, China, France and Britain), only India, Israel and Japan are in a position to develop an ICBM during the foreseeable future, and while all have relevant capabilities, none are undertaking the steps necessary to develop an actual ICBM.

  11. Optical deep space communication via relay satellite

    NASA Technical Reports Server (NTRS)

    Gagliardi, R. M.; Vilnrotter, V. A.; Dolinar, S. J., Jr.

    1981-01-01

    The possible use of an optical for high rate data transmission from a deep space vehicle to an Earth-orbiting relay satellite while RF links are envisioned for the relay to Earth link was studied. A preliminary link analysis is presented for initial sizing of optical components and power levels, in terms of achievable data rates and feasible range distances. Modulation formats are restricted to pulsed laser operation, involving bot coded and uncoded schemes. The advantage of an optical link over present RF deep space link capabilities is shown. The problems of acquisition, pointing and tracking with narrow optical beams are presented and discussed. Mathematical models of beam trackers are derived, aiding in the design of such systems for minimizing beam pointing errors. The expected orbital geometry between spacecraft and relay satellite, and its impact on beam pointing dynamics are discussed.

  12. Symmetric missile dynamic instabilities: A review

    NASA Astrophysics Data System (ADS)

    Murphy, C. H.

    1980-03-01

    Dynamic instabilities observed for symmetric missiles and projectiles arise from a large variety of causes. These include unstable linear damping moments, and different nonlinear in-plane and out-of-plane damping moments for nonspinning re-entry vehicles, nonlinear Magnus moments for spinning missiles, and internal resonance with moving payload components. If aerodynamic trim is present, linear spin-yaw resonance can occur as well as nonlinear subharmonic motions and a number of other limit motions. This report gives a complete survey of these possibilities with a number of actual case histories.

  13. Theater missile defense programs: Status and prospects

    SciTech Connect

    Pike, J.

    1994-09-01

    The Clinton administration now calls the Strategic Defense Initiative (SDI) the ballistic missile defense program. But the names have simply been changed to protect the guilty - the new program exhibits substantial continuity with the old in technology and goals. While acronyms have been changed, many of the programs continued by the Clinton administration date from the Reagan or Bush eras. And most strikingly, the Clinton administrations` ambitions for a virtually perfect defense against theater ballistic missiles harken to the unattainable goals for strategic defense initially set by President Reagan over a decade ago.

  14. Impact of relay placement on diversity order in adaptive selective DF relay-assisted FSO communications.

    PubMed

    Boluda-Ruiz, Rubén; García-Zambrana, Antonio; Castillo-Vázquez, Beatriz; Castillo-Vázquez, Carmen

    2015-02-09

    The impact of relay placement on diversity order in adaptive selective decode-and-forward (DF) cooperative strategies is here investigated in the context of free-space optical (FSO) communications over atmospheric turbulence channels with pointing errors when line of sight is available. The irradiance of the transmitted optical beam here considered is susceptible to moderate-to-strong turbulence conditions, following a gamma-gamma (GG) distribution together with a misalignment fading model where the effect of beam width, detector size and jitter variance is considered. Novel closed-form approximate bit error-rate (BER) expressions are obtained for a cooperative FSO communication setup with N relays, assuming that these relays are located in an area similar to an annulus around source or destination node. An analytical expression is here found that determines the best selection criterion based on the knowledge of the channel state information (CSI) of source-relay or relay-destination links in order to significantly increase the diversity order corresponding to the cooperative strategy under study. It is concluded that the highest diversity order is achieved when the relation β(SR(min)) > β(SD) + β(R(min)D) is satisfied, wherein β(SR(min)), β(R(min)D) and β(SD) are parameters corresponding to the atmospheric turbulence conditions of source-relay and relay-destination link with the greatest scintillation index, and source-destination link, respectively.

  15. Multiantenna relay beamforming design for QoS discrimination in two-way relay networks.

    PubMed

    Xiong, Ke; Zhang, Yu; Li, Dandan; Chang, Chih-Yung; Zhong, Zhangdui

    2013-01-01

    This paper investigates the relay beamforming design for quality of service (QoS) discrimination in two-way relay networks. The purpose is to keep legitimate two-way relay users exchange their information via a helping multiantenna relay with QoS guarantee while avoiding the exchanged information overhearing by unauthorized receiver. To this end, we propose a physical layer method, where the relay beamforming is jointly designed with artificial noise (AN) which is used to interfere in the unauthorized user's reception. We formulate the joint beamforming and AN (BFA) design into an optimization problem such that the received signal-to-interference-ratio (SINR) at the two legitimate users is over a predefined QoS threshold while limiting the received SINR at the unauthorized user which is under a certain secure threshold. The objective of the optimization problem is to seek the optimal AN and beamforming vectors to minimize the total power consumed by the relay node. Since the optimization problem is nonconvex, we solve it by using semidefinite program (SDP) relaxation. For comparison, we also study the optimal relay beamforming without using AN (BFO) under the same QoS discrimination constraints. Simulation results show that both the proposed BFA and BFO can achieve the QoS discrimination of the two-way transmission. However, the proposed BFA yields significant power savings and lower infeasible rates compared with the BFO method.

  16. 49 CFR 236.206 - Battery or power supply with respect to relay; location.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Battery or power supply with respect to relay... to relay; location. The battery or power supply for each signal control relay circuit, where an open... from the relay....

  17. 49 CFR 236.206 - Battery or power supply with respect to relay; location.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Battery or power supply with respect to relay... to relay; location. The battery or power supply for each signal control relay circuit, where an open... from the relay....

  18. 49 CFR 236.206 - Battery or power supply with respect to relay; location.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Battery or power supply with respect to relay... to relay; location. The battery or power supply for each signal control relay circuit, where an open... from the relay....

  19. 49 CFR 236.206 - Battery or power supply with respect to relay; location.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Battery or power supply with respect to relay... to relay; location. The battery or power supply for each signal control relay circuit, where an open... from the relay....

  20. 49 CFR 236.206 - Battery or power supply with respect to relay; location.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Battery or power supply with respect to relay... to relay; location. The battery or power supply for each signal control relay circuit, where an open... from the relay....

  1. Deep space optical communication via relay satellite

    NASA Technical Reports Server (NTRS)

    Dolinar, S.; Vilnrotter, V.; Gagliardi, R.

    1981-01-01

    The application of optical communications for a deep space link via an earth-orbiting relay satellite is discussed. The system uses optical frequencies for the free-space channel and RF links for atmospheric transmission. The relay satellite is in geostationary orbit and contains the optics necessary for data processing and formatting. It returns the data to earth through the RF terrestrial link and also transmits an optical beacon to the satellite for spacecraft return pointing and for the alignment of the transmitting optics. Future work will turn to modulation and coding, pointing and tracking, and optical-RF interfacing.

  2. Deep space optical communication via relay satellite

    NASA Technical Reports Server (NTRS)

    Dolinar, S.; Vilnrotter, V.; Gagliardi, R.

    1981-01-01

    The application of optical communications for a deep space link via an earth-orbiting relay satellite is discussed. The system uses optical frequencies for the free-space channel and RF links for atmospheric transmission. The relay satellite is in geostationary orbit and contains the optics necessary for data processing and formatting. It returns the data to earth through the RF terrestrial link and also transmits an optical beacon to the satellite for spacecraft return pointing and for the alignment of the transmitting optics. Future work will turn to modulation and coding, pointing and tracking, and optical-RF interfacing.

  3. Tracking and Data Relay Satellite System (TDRSS)

    NASA Technical Reports Server (NTRS)

    Mckenzie, J.; Vanek, C.

    1991-01-01

    The DSN (Deep Space Network) mission support requirements for the Tracking and Data Relay Satellite System (TDRSS) are summarized. The TDRSS consists of four identical satellites in geosynchronous orbits (35,800 km) and a dedicated ground station. The payload of each satellite is a telecommunications service system that relays communication signals between low earth-orbiting user spacecraft and the TDRSS ground terminal. Mission objectives are outlined and the DSN support requirements are defined through the presentation of tables and narratives describing the spacecraft flight profile; DSN support coverage; frequency assignments; support parameters for telemetry, command and support systems; and tracking support responsibility.

  4. Counterfactual quantum cryptography network with untrusted relay

    NASA Astrophysics Data System (ADS)

    Chen, Yuanyuan; Gu, Xuemei; Jiang, Dong; Xie, Ling; Chen, Lijun

    2015-07-01

    Counterfactual quantum cryptography allows two remote parties to share a secret key even though a physical particle is not in fact transmitted through the quantum channel. In order to extend the scope of counterfactual quantum cryptography, we use an untrusted relay to construct a multi-user network. The implementation issues are discussed to show that the scheme can be realized with current technologies. We also prove the practical security advantages of the scheme by eliminating the probability that an eavesdropper can directly access the signal or an untrusted relay can perform false operations.

  5. Evaluation of wind/tornado-generated missile impact

    SciTech Connect

    Singhal, M.K.; Walls, J.C.

    1993-09-01

    Simplified empirical formulae and some tabular data for the design/evaluation of structure barriers to resist wind/tornado generated missiles impact are presented in this paper. The scope is limited to the missiles defined by UCRL-15910 which are to be considered for moderate and high hazard facilities only. The method presented herein are limited to consideration of local effects on the barrier, i.e., the barrier must be capable of stopping the missile, and the barrier must no cause the generation of secondary missiles due to scabbing. Overall structural response to missile impact and structural effects derived from wind pressure are not addressed in this paper.

  6. Relay Support for the Mars Science Laboratory and the Coming Decade of Mars Relay Network Evolution

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, Bradford W.; Bell, David J.; Bruvold, Kristoffer N.; Gladden, Roy E.; Ilott, Peter A.; Lee, Charles H.

    2012-01-01

    Mars Relay Network is prepared to support MSL: a) ODY/MRO/MEX will all provide critical event comm support during EDL. b) New Electra/Electra-Lite capabilities on the MSL-MRO link will support >250 Mb/sol MSL data return. 2013 MAVEN orbiter will replenish on-orbit relay infrastructure as prior orbiters approach end-of-life. While NASA has withdrawn from the 2016 EMTGO and 2018 Joint Rover missions, analysis of the potential link shows a path to Gbit/sol relay capability 2012.

  7. Optimum satellite relay positions with application to a TDRS-1 Indian Ocean relay

    NASA Technical Reports Server (NTRS)

    Jackson, A. H.; Christopher, P.

    1994-01-01

    An Indian Ocean satellite relay is examined. The relay satellite position is optimized by minimizing the sum of downlink and satellite to satellite link losses. Osculating orbital elements are used for fast intensive orbital computation. Integrated Van Vleck gaseous attenuation and a Crane rain model are used for downlink attenuation. Circular polarization losses on the satellite to satellite link are found dynamically. Space to ground link antenna pointing losses are included as a function of yaw ans spacecraft limits. Relay satellite positions between 90 to 100 degrees East are found attractive for further study.

  8. Relay Support for the Mars Science Laboratory and the Coming Decade of Mars Relay Network Evolution

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, Bradford W.; Bell, David J.; Bruvold, Kristoffer N.; Gladden, Roy E.; Ilott, Peter A.; Lee, Charles H.

    2012-01-01

    Mars Relay Network is prepared to support MSL: a) ODY/MRO/MEX will all provide critical event comm support during EDL. b) New Electra/Electra-Lite capabilities on the MSL-MRO link will support >250 Mb/sol MSL data return. 2013 MAVEN orbiter will replenish on-orbit relay infrastructure as prior orbiters approach end-of-life. While NASA has withdrawn from the 2016 EMTGO and 2018 Joint Rover missions, analysis of the potential link shows a path to Gbit/sol relay capability 2012.

  9. Advanced Strategic and Tactical Relay Request Management for the Mars Relay Operations Service

    NASA Technical Reports Server (NTRS)

    Allard, Daniel A.; Wallick, Michael N.; Gladden, Roy E.; Wang, Paul; Hy, Franklin H.

    2013-01-01

    This software provides a new set of capabilities for the Mars Relay Operations Service (MaROS) in support of Strategic and Tactical relay, including a highly interactive relay request Web user interface, mission control over relay planning time periods, and mission management of allowed strategic vs. tactical request parameters. Together, these new capabilities expand the scope of the system to include all elements critical for Tactical relay operations. Planning of replay activities spans a time period that is split into two distinct phases. The first phase is called Strategic, which begins at the time that relay opportunities are identified, and concludes at the point that the orbiter generates the flight sequences for on board execution. Any relay request changes from this point on are called Tactical. Tactical requests, otherwise called Orbit - er Relay State Changes (ORSC), are highly restricted in terms of what types of changes can be made, and the types of parameters that can be changed may differ from one orbiter to the next. For example, one orbiter may be able to delay the start of a relay request, while another may not. The legacy approach to ORSC management involves exchanges of e-mail with "requests for change" and "acknowledgement of approval," with no other tracking of changes outside of e-mail folders. MaROS Phases 1 and 2 provided the infrastructure for strategic relay for all supported missions. This new version, 3.0, introduces several capabilities that fully expand the scope of the system to include tactical relay. One new feature allows orbiter users to manage and "lock" Planning Periods, which allows the orbiter team to formalize the changeover from Strategic to Tactical operations. Another major feature allows users to interactively submit tactical request changes via a Web user interface. A third new feature allows orbiter missions to specify allowed tactical updates, which are automatically incorporated into the tactical change process

  10. Relay communications strategies for Mars exploration through 2020

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, B.; DePaula, R.; Kazz, G.; Lee, C.; Noreen, G.

    2005-01-01

    In this paper we will examine NASA's strategy for relay communications support of missions planned for this decade, and discuss options for longer-term relay network evolution in support of second-decade missions.

  11. Relay communications strategies for Mars exploration through 2020

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, B.; DePaula, R.; Kazz, G.; Lee, C.; Noreen, G.

    2005-01-01

    In this paper we will examine NASA's strategy for relay communications support of missions planned for this decade, and discuss options for longer-term relay network evolution in support of second-decade missions.

  12. A Simplified Guidance for Target Missiles Used in Ballistic Missile Defence Evaluation

    NASA Astrophysics Data System (ADS)

    Prabhakar, N.; Kumar, I. D.; Tata, S. K.; Vaithiyanathan, V.

    2013-01-01

    A simplified guidance scheme for the target missiles used in Ballistic Missile Defence is presented in this paper. The proposed method has two major components, a Ground Guidance Computation (GGC) and an In-Flight Guidance Computation. The GGC which runs on the ground uses a missile model to generate attitude history in pitch plane and computes launch azimuth of the missile to compensate for the effect of earth rotation. The vehicle follows the pre launch computed attitude (theta) history in pitch plane and also applies the course correction in azimuth plane based on its deviation from the pre launch computed azimuth plane. This scheme requires less computations and counters In-flight disturbances such as wind, gust etc. quite efficiently. The simulation results show that the proposed method provides the satisfactory performance and robustness.

  13. Hardware-in-the-loop tow missile system simulator

    SciTech Connect

    Waldman, G.S.; Wootton, J.R.; Hobson, G.L.; Holder, D.L.

    1993-07-06

    A missile system simulator is described for use in training people for target acquisition, missile launch, and missile guidance under simulated battlefield conditions comprising: simulating means for producing a digital signal representing a simulated battlefield environment including at least one target movable therewithin, the simulating means generating an infrared map representing the field-of-view and the target; interface means for converting said digital signals to an infrared image; missile system hardware including the missile acquisition, tracking, and guidance portions thereof, said hardware sensing the infrared image to determine the location of the target in a field-of-view; and, image means for generating an infrared image of a missile launched at the target and guided thereto, the image means imposing the missile image onto the field-of-view for the missile hardware to acquire the image of the missile in addition to that of the target, and to generate guidance signals to guide the missile image to the target image, wherein the interfacing means is responsive to a guidance signal from the hardware to simulate, in real-time, the response of the missile to the guidance signal, the image means including a blackbody, laser means for irradiating the blackbody to heat it to a temperature at which it emits infrared radiation, and optic means for integrating the radiant image produced by heating the blackbody into the infrared map.

  14. Missile Defense: Ballistic Missile Defense System Testing Delays Affect Delivery of Capabilities

    DTIC Science & Technology

    2016-04-28

    BMDS)—includes a diverse collection of land-, sea-, and space-based assets located around the globe. Since 2002, the Missile Defense Agency (MDA...delivering capabilities and assets for the Ballistic Missile Defense System. We focused this review on MDA’s testing and asset delivery goals necessary... assets to support an integrated BMDS, we reviewed and analyzed relevant policies and asset delivery goals baselined in the March 2014 BAR. Additionally

  15. Rationale for wind-borne missile criteria for DOE facilities

    SciTech Connect

    McDonald, J R; Murray, R

    1999-09-01

    High winds tend to pick up and transport various objects and debris, which are referred to as wind-borne missiles or tornado missiles, depending on the type of storm. Missiles cause damage by perforating the building envelope or by collapsing structural elements such as walls, columns or frames. The primary objectives of this study are as follows: (1) to provide a basis for wind-borne or tornado missile criteria for the design and evaluation of DOE facilities, and (2) to provide guidelines for the design and evaluation of impact-resistant missile barriers for DOE facilities The first objective is accomplished through a synthesis of information from windstorm damage documentation experience and computer simulation of missile trajectories. The second objective is accomplished by reviewing the literature, which describes various missile impact tests, and by conducting a series of impact tests at a Texas Tech University facility to fill in missing information.

  16. 47 CFR 90.243 - Mobile relay stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Mobile relay stations. 90.243 Section 90.243... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.243 Mobile relay stations. (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the Radiolocation...

  17. 47 CFR 90.243 - Mobile relay stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Mobile relay stations. 90.243 Section 90.243... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.243 Mobile relay stations. (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the Radiolocation...

  18. 47 CFR 11.20 - State Relay Network.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 1 2013-10-01 2013-10-01 false State Relay Network. 11.20 Section 11.20 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.20 State Relay Network. This network is composed of State Relay (SR) sources, leased common carrier...

  19. 47 CFR 90.245 - Fixed relay stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Fixed relay stations. 90.245 Section 90.245... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.245 Fixed relay stations. Except where specifically provided for, fixed relay stations shall be authorized to operate only on...

  20. 47 CFR 11.20 - State Relay Network.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false State Relay Network. 11.20 Section 11.20 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.20 State Relay Network. This network is composed of State Relay (SR) sources, leased common carrier...

  1. 49 CFR 234.265 - Timing relays and timing devices.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Timing relays and timing devices. 234.265 Section... Maintenance, Inspection, and Testing Inspections and Tests § 234.265 Timing relays and timing devices. Each timing relay and timing device shall be tested at least once every twelve months. The timing shall...

  2. 47 CFR 90.243 - Mobile relay stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Mobile relay stations. 90.243 Section 90.243... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.243 Mobile relay stations. (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the...

  3. 49 CFR 236.556 - Adjustment of relay.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Adjustment of relay. 236.556 Section 236.556..., Train Control and Cab Signal Systems Rules and Instructions; Locomotives § 236.556 Adjustment of relay. Change in adjustment of relay shall be made only in a shop equipped for that purpose except when...

  4. 47 CFR 90.243 - Mobile relay stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Mobile relay stations. 90.243 Section 90.243... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.243 Mobile relay stations. (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the...

  5. 47 CFR 90.245 - Fixed relay stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Fixed relay stations. 90.245 Section 90.245... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.245 Fixed relay stations. Except where specifically provided for, fixed relay stations shall be authorized to operate only on...

  6. 47 CFR 90.245 - Fixed relay stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Fixed relay stations. 90.245 Section 90.245... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.245 Fixed relay stations. Except where specifically provided for, fixed relay stations shall be authorized to operate only on...

  7. 47 CFR 11.20 - State Relay Network.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false State Relay Network. 11.20 Section 11.20 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.20 State Relay Network. This network is composed of State Relay (SR) sources, leased common carrier...

  8. 47 CFR 90.243 - Mobile relay stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Mobile relay stations. 90.243 Section 90.243... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.243 Mobile relay stations. (a) Mobile relay operations will be authorized on frequencies below 512 MHz, except in the...

  9. 76 FR 58412 - Relay Services for Deaf-Blind Individuals

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-21

    ... COMMISSION 47 CFR Part 64 Relay Services for Deaf-Blind Individuals AGENCY: Federal Communications Commission... Communications and Video Accessibility Act of 2010, Section 105, Relay Services for Deaf-Blind Individuals...-First Century Communications and Video Accessibility Act of 2010, Section 105, Relay Services for...

  10. 47 CFR 11.20 - State Relay Network.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false State Relay Network. 11.20 Section 11.20 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.20 State Relay Network. This network is composed of State Relay (SR) sources, leased common carrier...

  11. 47 CFR 11.20 - State Relay Network.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 1 2014-10-01 2014-10-01 false State Relay Network. 11.20 Section 11.20 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EMERGENCY ALERT SYSTEM (EAS) General § 11.20 State Relay Network. This network is composed of State Relay (SR) sources, leased common carrier...

  12. 49 CFR 236.556 - Adjustment of relay.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Adjustment of relay. 236.556 Section 236.556..., Train Control and Cab Signal Systems Rules and Instructions; Locomotives § 236.556 Adjustment of relay. Change in adjustment of relay shall be made only in a shop equipped for that purpose except when...

  13. 49 CFR 236.556 - Adjustment of relay.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Adjustment of relay. 236.556 Section 236.556..., Train Control and Cab Signal Systems Rules and Instructions; Locomotives § 236.556 Adjustment of relay. Change in adjustment of relay shall be made only in a shop equipped for that purpose except when...

  14. 47 CFR 90.245 - Fixed relay stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Fixed relay stations. 90.245 Section 90.245... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.245 Fixed relay stations. Except where specifically provided for, fixed relay stations shall be authorized to operate only on...

  15. 76 FR 65965 - Contributions to the Telecommunications Relay Services Fund

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-25

    ... COMMISSION 47 CFR Parts 1 and 64 Contributions to the Telecommunications Relay Services Fund AGENCY: Federal... contributing to the interstate Telecommunications Relay Services (TRS) Fund in a manner prescribed by... to the Telecommunications Relay Service Fund, Report and Order (Order), document FCC 11-150,...

  16. 77 FR 20553 - Relay Services for Deaf-Blind Individuals

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    ... COMMISSION 47 CFR Part 64 Relay Services for Deaf-Blind Individuals AGENCY: Federal Communications Commission... Relay Services for Deaf-Blind Individuals, Report and Order, document FCC 11-56, published at 76 FR... Commission to allocate up to $10 million annually from the Interstate Telecommunications Relay Services...

  17. 49 CFR 236.556 - Adjustment of relay.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Adjustment of relay. 236.556 Section 236.556..., Train Control and Cab Signal Systems Rules and Instructions; Locomotives § 236.556 Adjustment of relay. Change in adjustment of relay shall be made only in a shop equipped for that purpose except when...

  18. 49 CFR 234.265 - Timing relays and timing devices.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Timing relays and timing devices. 234.265 Section... Maintenance, Inspection, and Testing Inspections and Tests § 234.265 Timing relays and timing devices. Each timing relay and timing device shall be tested at least once every twelve months. The timing shall...

  19. 47 CFR 90.245 - Fixed relay stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Fixed relay stations. 90.245 Section 90.245... MOBILE RADIO SERVICES Non-Voice and Other Specialized Operations § 90.245 Fixed relay stations. Except where specifically provided for, fixed relay stations shall be authorized to operate only on...

  20. 49 CFR 236.556 - Adjustment of relay.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Adjustment of relay. 236.556 Section 236.556..., Train Control and Cab Signal Systems Rules and Instructions; Locomotives § 236.556 Adjustment of relay. Change in adjustment of relay shall be made only in a shop equipped for that purpose except when...

  1. Ring Wing for an underwater missile

    NASA Astrophysics Data System (ADS)

    August, Henry; Carapezza, Edward

    Hughes Aircraft has performed exploratory wind tunnel studies of compressed carriage missile designs having extendable Ring Wing and wrap-around tail control surfaces. These force and moment data indicate that significant improvements in a missile's lift and aerodynamic efficiency can be realized. Low speed test results of these data were used to estimate potential underwater improved hydrodynamic characteristics that a Ring Wing and wrap-around tails can bring to an advanced torpedo design. Estimates of improved underwater flight performance of a heavyweight torpedo (4000 lbs.) having an extendable Ring Wing and wrap-around tails were made. The compressed volume design of this underwater missile is consistent with tube-launch constraints and techniques. Study results of this novel Ring Wing torpedo design include extended flight performance in range and endurance due to lowered speeds capable of sustaining underwater level flight. Correspondingly, reduced radiated noise for enhanced stealth qualities is projected. At high speeds, greater maneuverability and aimpoint selection can be realized by a Ring Wing underwater missile.

  2. The Cuban Missile Crisis: Evolving Historical Perspectives.

    ERIC Educational Resources Information Center

    Medland, William J.

    1990-01-01

    Presents a synthesis of the views of participants and counterviews of scholars concerning the Cuban missile crisis of 1962. Reviews historical and analytical accounts of the crisis. Describes critical areas of conflicting interpretations by historians and participants. Includes an annotated bibliography of teaching resources. (NL)

  3. The Cuban Missile Crisis. Lesson Plan.

    ERIC Educational Resources Information Center

    Miller, Linda K.; McAuliffe, Mary

    1994-01-01

    Presents a secondary lesson plan based on primary sources recently released by the Central Intelligence Agency on the Cuban Missile Crisis. Provides a background essay on the event. Includes five maps and three documents, all of which have been declassified from top secret or secret status. (CFR)

  4. The Cuban Missile Crisis: Evolving Historical Perspectives.

    ERIC Educational Resources Information Center

    Medland, William J.

    1990-01-01

    Presents a synthesis of the views of participants and counterviews of scholars concerning the Cuban missile crisis of 1962. Reviews historical and analytical accounts of the crisis. Describes critical areas of conflicting interpretations by historians and participants. Includes an annotated bibliography of teaching resources. (NL)

  5. The Cuban Missile Crisis. Lesson Plan.

    ERIC Educational Resources Information Center

    Miller, Linda K.; McAuliffe, Mary

    1994-01-01

    Presents a secondary lesson plan based on primary sources recently released by the Central Intelligence Agency on the Cuban Missile Crisis. Provides a background essay on the event. Includes five maps and three documents, all of which have been declassified from top secret or secret status. (CFR)

  6. Ballistic Missile Defense. Past and Future

    DTIC Science & Technology

    2010-04-01

    years. Located in a geo-synchronous orbit, they utilize their heat- sensing (infrared) detectors to look for launches of missiles anywhere in the...modified, high-altitude SM-3 (to prevent earth impact of a 1,000-pound tank of hazardous hydrazine rocket fuel).10 —President Bush received

  7. Joint Air-to-Ground Missile (JAGM)

    DTIC Science & Technology

    2015-12-01

    Selected Acquisition Report (SAR) RCS: DD-A&T(Q&A)823-355 Joint Air-to-Ground Missile (JAGM) As of FY 2017 President’s Budget Defense Acquisition...Research, Development, Test, and Evaluation SAR - Selected Acquisition Report SCP - Service Cost Position TBD - To Be Determined TY - Then Year UCR

  8. Air and Missile Defense Radar (AMDR)

    DTIC Science & Technology

    2015-12-01

    Selected Acquisition Report (SAR) RCS: DD-A&T(Q&A)823-384 Air and Missile Defense Radar (AMDR) As of FY 2017 President’s Budget Defense Acquisition...Research, Development, Test, and Evaluation SAR - Selected Acquisition Report SCP - Service Cost Position TBD - To Be Determined TY - Then Year UCR

  9. Remote video assessment for missile launch facilities

    SciTech Connect

    Wagner, G.G.; Stewart, W.A.

    1995-07-01

    The widely dispersed, unmanned launch facilities (LFs) for land-based ICBMs (intercontinental ballistic missiles) currently do not have visual assessment capability for existing intrusion alarms. The security response force currently must assess each alarm on-site. Remote assessment will enhance manpower, safety, and security efforts. Sandia National Laboratories was tasked by the USAF Electronic Systems Center to research, recommend, and demonstrate a cost-effective remote video assessment capability at missile LFs. The project`s charter was to provide: system concepts; market survey analysis; technology search recommendations; and operational hardware demonstrations for remote video assessment from a missile LF to a remote security center via a cost-effective transmission medium and without using visible, on-site lighting. The technical challenges of this project were to: analyze various video transmission media and emphasize using the existing missile system copper line which can be as long as 30 miles; accentuate and extremely low-cost system because of the many sites requiring system installation; integrate the video assessment system with the current LF alarm system; and provide video assessment at the remote sites with non-visible lighting.

  10. Missile war injuries of the face.

    PubMed

    Kummoona, Raja K

    2011-11-01

    In a society struggling to rebuild its country after 3 decades of years of dictatorships and wars, Iraqi maxillofacial and craniofacial surgeons play a critical role in treatment of many most serious terrorist missile injuries of the face by ongoing conflict in Iraq. This study reflects our surgical techniques of treating explosive missile injuries and other combat- and terrorism-related injuries and also evaluates the immediate and secondary phase managements of patients with missile injuries. This study includes 235 patients with missile war injuries of the face during a period of 4 years; all injured patients were treated in the Maxillofacial Unit of Surgical Specialties Hospital, Medical City, Baghdad. There were 195 men and 40 women; their ages ranged from 1 to 70 years (mean, 39.5 years). Posttraumatic missile facial deformities were classified as follows: 95 patients (40.43%) had bone loss; 72 patients (30.64%) had soft tissue loss; 33 patients (14.05%) had orbital injuries; and 35 patients (14.90%) had other deformities of scar contracture, fistula, and sinus formation. Two techniques were used for reconstruction of the bony defect, either by bone chips carried by osteomesh tray harvested from the iliac crest or by free block of corticocancellous bone graft from the iliac crest. Soft tissue reconstruction was done by local flaps and regional flaps such as lateral cervical and cervicofacial flaps, and the orbit was reconstructed by bone graft, lyophilized dura, and sialastic implant. Scar contracture was treated by scar revision and sinus tract excised at the same time of scar revision. In conclusion, the primary phase required an urgent airway management, controlling an active bleeding by surgical intervention; most entrance and exit wounds as well as retained missiles were located in the cheek, chin, and mandibular body, with few cases of mortality due to complications related to head injuries. The secondary phase management of deformities of the face as a

  11. Factors affecting performance during an endurance relay.

    PubMed Central

    Lloyd, E. L.; Henderson, W.; Covell, B.; Bryce, G. R.

    1977-01-01

    A successful attempt by Edinburgh Athletic Club on the world record for the 24-hour 10-man x 1 mile relay is reported. The effects of a variety of factors on the performances of the athletes are assessed, and some physiological changes noted. In the light of these observations recommendations are made to help the planning of future record attempts. PMID:922276

  12. Relay cross metathesis reactions of vinylphosphonates.

    PubMed

    Malla, Raj K; Ridenour, Jeremy N; Spilling, Christopher D

    2014-01-01

    Dimethyl (β-substituted) vinylphosphonates do not readily undergo cross metathesis reactions with Grubbs catalyst and terminal alkenes. However, the corresponding mono- or diallyl vinylphosphonate esters undergo facile cross metathesis reactions. The improved reactivity is attributed to a relay step in the cross metathesis reaction mechanism.

  13. Digital sequential solid-state relay tester

    NASA Astrophysics Data System (ADS)

    Riley, J. L.

    1981-11-01

    The design of the digital sequential solid-state relay tester is described. This equipment is used extensively in simplifying the testing and development of the computer-controlled, motor-driven valve array in the tritium waste treatment section at the Los Alamos National Laboratory.

  14. Cable Television Service; Cable Television Relay Service.

    ERIC Educational Resources Information Center

    Federal Register, 1972

    1972-01-01

    The rules and regulations of the Federal Communications Commission (FCC) concerning cable television service and cable relay service are presented along with the comments of the National Cable Television Association, the National Association of Broadcasters, the Association of Maximum Service Telecasters, and a major group of program suppliers.…

  15. Cable Television Service; Cable Television Relay Service.

    ERIC Educational Resources Information Center

    Federal Register, 1972

    1972-01-01

    The rules and regulations of the Federal Communications Commission (FCC) concerning cable television service and cable relay service are presented along with the comments of the National Cable Television Association, the National Association of Broadcasters, the Association of Maximum Service Telecasters, and a major group of program suppliers.…

  16. First Things First: Internet Relay Chat Openings.

    ERIC Educational Resources Information Center

    Rintel, E. Sean; Mulholland, Joan; Pittam, Jeffery

    2001-01-01

    Argues that Internet Relay Chat (IRC) research needs to systematically address links between interaction structures, technological mediation and the instantiation and development of interpersonal relationships. Finds that openings that occur directly following user's entries into public IRC channels are often ambiguous, can disrupt relationship…

  17. First Things First: Internet Relay Chat Openings.

    ERIC Educational Resources Information Center

    Rintel, E. Sean; Mulholland, Joan; Pittam, Jeffery

    2001-01-01

    Argues that Internet Relay Chat (IRC) research needs to systematically address links between interaction structures, technological mediation and the instantiation and development of interpersonal relationships. Finds that openings that occur directly following user's entries into public IRC channels are often ambiguous, can disrupt relationship…

  18. Experimental missile wound to the brain.

    PubMed

    Carey, M E; Sarna, G S; Farrell, J B; Happel, L T

    1989-11-01

    Among civilians in the United States, 33,000 gunshot wound deaths occur each year; probably half of these involve the head. In combat, head wounds account for approximately half of the immediate mortality when death can be attributed to a single wound. No significant reduction in the neurosurgical mortality associated with these wounds has occurred between World War II and the Vietnam conflict, and very little research into missile wounds of the brain has been undertaken. An experimental model has been developed in the anesthetized cat whereby a ballistic injury to the brain may be painlessly reproduced in order that the pathophysiological effects of brain wounding may be studied and better treatments may be designed to lower the mortality and morbidity rates associated with gunshot wounds. Prominent among physiological effects observed in this model was respiratory arrest even though the missile did not injure the brain stem directly. The incidence of prolonged respiratory arrest increased with increasing missile energy, but arrest was often reversible provided respiratory support was given. It is possible that humans who receive a brain wound die from missile-induced apnea instead of brain damage per se. The mortality rate in humans with brain wounding might be reduced by prompt respiratory support. Brain wounding was associated with persistently increased intracranial pressure and reduced cerebral perfusion pressure not entirely attributable to intracranial bleeding. The magnitude of these derangements appeared to be missile energy-dependent and approached dangerous levels in higher-energy wounds. All wounded cats exhibited postwounding increases in blood glucose concentrations consistent with a generalized stress reaction. A transient rise in hematocrit also occurred immediately after wounding. Both of these phenomena could prove deleterious to optimal brain function after injury.

  19. Triffid - Tactical radio relay for the 80s

    NASA Astrophysics Data System (ADS)

    Dow, R. I.

    The Triffid Radio Relay Equipment (UK/TRC 471) has been designed to meet the requirements for a new generation of radio relay equipment for the British Army. It is required to operate initially as a replacement for the existing radios used in the Bruin system, and then to be easily converted to form the main trunk radio bearer in the Ptarmigan system which is to be introduced in the early 80s. The Triffid equipment has been designed to handle data rates of 250, 256, 500, and 512k bit/s, thus meeting both Bruin and Ptarmigan requirements by simply setting a front panel switch. A description is provided of the Band III R.F. Head covering the frequency band from 1350 to 1850 MHz. This is the most recently designed unit extending the frequency coverage above the maximum 960 MHz provided by Band II. The Triffid equipment has been subjected to extensive field trials, and the experience gained during these trials has been very encouraging.

  20. Using a micromachined magnetostatic relay in commutating a DC motor

    NASA Technical Reports Server (NTRS)

    Tai, Yu-Chong (Inventor); Wright, John A. (Inventor); Lilienthal, Gerald (Inventor)

    2004-01-01

    A DC motor is commutated by rotating a magnetic rotor to induce a magnetic field in at least one magnetostatic relay in the motor. Each relay is activated in response to the magnetic field to deliver power to at least one corresponding winding connected to the relay. In some cases, each relay delivers power first through a corresponding primary winding and then through a corresponding secondary winding to a common node. Specific examples include a four-pole, three-phase motor in which each relay is activated four times during one rotation of the magnetic rotor.

  1. Optimised secure transmission through untrusted AF relays using link adaptation

    NASA Astrophysics Data System (ADS)

    Taki, Mehrdad; Sadeghi, Mohammad

    2016-05-01

    A new transmission scheme is presented for a two-hop relay network including two AF relays, considering physical layer security where relays are not able to detect signal with an acceptable bit error rate (BER) but the combined received signal is detected with an acceptable BER at the final receiver. It is assumed that there is no direct path between the transmitter and the receiver (relay network without diversity). Adaptive modulation and coding is utilised at the transmitter and transmission powers of the transmitter and of the relays are continuously adapted provisioning individual average power constraint for each node. Numerical evaluations show that an acceptable performance degradation is seen by the proposed secure relaying scheme compared to the optimum relay selection scheme without security constraint.

  2. Performance analysis of SA-3 missile second stage

    NASA Technical Reports Server (NTRS)

    Helmy, A. M.

    1981-01-01

    One SA-3 missile was disassembled. The constituents of the second stage were thoroughly investigated for geometrical details. The second stage slotted composite propellant grain was subjected to mechanical properties testing, physiochemical analyses, and burning rate measurements at different conditions. To determine the propellant performance parameters, the slotted composite propellant grain was machined into a set of small-size tubular grains. These grains were fired in a small size rocket motor with a set of interchangeable nozzles with different throat diameters. The firings were carried out at three different conditions. The data from test motor firings, physiochemical properties of the propellant, burning rate measurement results and geometrical details of the second stage motor, were used as input data in a computer program to compute the internal ballistic characteristics of the second stage.

  3. Sea-Based Ballistic Missile Defense - Background and Issues for Congress

    DTIC Science & Technology

    2007-04-27

    release, distribution unlimited 13. SUPPLEMENTARY NOTES The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY...Future versions of the Aegis BMD system are to include a faster interceptor designed to intercept certain ICBMs. The Aegis BMD system has achieved...hand casts a shadow in a candle -lit room. The closer that the hand (i.e., the Navy ship) is moved to the candle (the ballistic missile launcher), the

  4. Sea-Based Ballistic Missile Defense -- Background and Issues for Congress

    DTIC Science & Technology

    2006-12-19

    release, distribution unlimited 13. SUPPLEMENTARY NOTES The original document contains color images. 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY...include a faster interceptor designed to intercept certain ICBMs. The Aegis BMD system has achieved seven successful exo-atmospheric intercepts in...a hand casts a shadow in a candle -lit room. The closer that the hand (i.e., the Navy ship) is moved to the candle (the ballistic missile launcher

  5. Prediction of Target Travel During Missile Time of Flight. A Computer Simulation

    DTIC Science & Technology

    1978-06-01

    the second program, the subject had to decide if a gap between two covered areas was wide enough for a missile to be fired successfully. Functional...Program Display During "Time to Decide"....... . ............ 7 4. Gap Program Display ,howing Covered Areas and Dot Track ... .......... 7 5. Gap...18 17. SD of Decision Time As a Funcion of Target Speed and Relative Gap Size ....... .............................. 19 18. Mean Decision

  6. The North Korean missile program: How advanced is it?

    SciTech Connect

    Wright, D.; Kadyshev, T.

    1994-04-01

    For the past three years there have been increasing numbers of reports that North Korea is developing a 1,000-1,300-kilometer range missile generally referred to as the NoDongg-1. Pyongyang`s missile program has generated international concern because of North Korea`s potential nuclear capabilities, its proximity to South Korea and Japan and its reported missile sales to Iran, Syria and Libya. In June 1993, Japanese and South Korean wire services reported that North Korea had test fired several missiles into the Sea of Japan in late May, at least two of which were though to be NoDong-1 missiles. A missile with a 1,300-kilometer range would give North Korea the capability to reach all of Japan, and give Iran and Libya the capability to reach all of Israel.

  7. Detection technique of targets for missile defense system

    NASA Astrophysics Data System (ADS)

    Guo, Hua-ling; Deng, Jia-hao; Cai, Ke-rong

    2009-11-01

    Ballistic missile defense system (BMDS) is a weapon system for intercepting enemy ballistic missiles. It includes ballistic-missile warning system, target discrimination system, anti-ballistic-missile guidance systems, and command-control communication system. Infrared imaging detection and laser imaging detection are widely used in BMDS for surveillance, target detection, target tracking, and target discrimination. Based on a comprehensive review of the application of target-detection techniques in the missile defense system, including infrared focal plane arrays (IRFPA), ground-based radar detection technology, 3-dimensional imaging laser radar with a photon counting avalanche photodiode (APD) arrays and microchip laser, this paper focuses on the infrared and laser imaging detection techniques in missile defense system, as well as the trends for their future development.

  8. 75 FR 52732 - Renewal of Department of Defense Federal Advisory Committee; Missile Defense Advisory Committee

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-27

    ... development, technology, program maturity and readiness of configurations for the Ballistic Missile Defense... technical areas relating ] to Ballistic Missile Defense System Programs. Committee members appointed by the... of the Secretary Renewal of Department of Defense Federal Advisory Committee; Missile...

  9. 76 FR 14589 - Defense Federal Acquisition Regulation Supplement; Repeal of Restriction on Ballistic Missile...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-17

    ... Regulation Supplement; Repeal of Restriction on Ballistic Missile Defense Research, Development, Test, and... Ballistic Missile Defense research, development, test, and evaluation from foreign sources. DATES: Effective...) repealed the restriction from foreign sources of acquisition of Ballistic Missile Defense...

  10. Spaceborne centrifugal relays for spacecraft propulsion

    NASA Technical Reports Server (NTRS)

    Ouzidane, Malika

    1991-01-01

    Acceleration using centrifugal relays is a recently discovered method for the acceleration of spaceborne payloads to high velocity at high thrust. Centrifugal relays are moving rotors which progressively accelerate reaction mass to higher velocities. One important engineering problem consists of accurately tracking the position of the projectiles and rotors and guiding each projectile exactly onto the appropriate guide tracks on each rotor. The topics of this research are the system kinematics and dynamics and the computerized guidance system which will allow the projectile to approach each rotor with exact timing with respect to the rotor rotation period and with very small errors in lateral positions. Kinematics studies include analysis of rotor and projectile positions versus time and projectile/rotor interactions. Guidance studies include a detailed description of the tracking mechanism (interrupt of optical beams) and the aiming mechanism (electromagnetic focusing) including the design of electromagnetic deflection coils and the switching circuitry.

  11. Solar concentrator with a toroidal relay module.

    PubMed

    Lin, Jhe-Syuan; Liang, Chao-Wen

    2015-10-01

    III-V multijunction solar cells require solar concentrators with a high concentration ratio to reduce per watt cost and to increase solar energy transforming efficiency. This paper discusses a novel solar concentrator design that features a high concentration ratio, high transfer efficiency, thin profile design, and a high solar acceptance angle. The optical design of the concentrator utilizes a toroidal relay module, which includes both the off-axis relay lens and field lens design in a single concentric toroidal lens shape. The optical design concept of the concentrator is discussed and the simulation results are shown. The given exemplary design has an aspect ratio of 0.24, a high averaged optical concentration ratio 1230×, a maximum efficiency of 76.8%, and the solar acceptance angle of ±0.9°.

  12. Average deployments versus missile and defender parameters

    SciTech Connect

    Canavan, G.H.

    1991-03-01

    This report evaluates the average number of reentry vehicles (RVs) that could be deployed successfully as a function of missile burn time, RV deployment times, and the number of space-based interceptors (SBIs) in defensive constellations. Leakage estimates of boost-phase kinetic-energy defenses as functions of launch parameters and defensive constellation size agree with integral predictions of near-exact calculations for constellation sizing. The calculations discussed here test more detailed aspects of the interaction. They indicate that SBIs can efficiently remove about 50% of the RVs from a heavy missile attack. The next 30% can removed with two-fold less effectiveness. The next 10% could double constellation sizes. 5 refs., 7 figs.

  13. Aircraft antennas/conformal antennas missile antennas

    NASA Astrophysics Data System (ADS)

    Solbach, Klaus

    1987-04-01

    Three major areas of airborne microwave antennas are examined. The basic system environment for missile telemetry/telecommand and fuze functions is sketched and the basic antenna design together with practical examples are discussed. The principle requirements of modern nose radar flat plate antennas are shown to result from missile/aircraft system requirements. Basic principles of slotted waveguide antenna arrays are sketched and practical antenna designs are discussed. The present early warning system designs are sketched to point out requirements and performance of practical radar warning and jamming antennas (broadband spiral antennas and horn radiators). With respect to newer developments in the ECM scenario, some demonstrated and proposed antenna systems (lens fed arrays, phased array, active array) are discussed.

  14. Ballistic Missile Silo Door Monitoring Analysis

    SciTech Connect

    EDENBURN,MICHAEL W.; TROST,LAWRENCE C.

    2000-01-01

    This paper compares the cost and effectiveness of several potential options that may be used to monitor silo-based ballistic missiles. Silo door monitoring can be used to verify that warheads removed to deactivate or download silo-based ballistic missiles have not been replaced. A precedent for monitoring warhead replacement using reentry vehicle on site inspections (RV-OSIs) and using satellites has been established by START-I and START-II. However, other monitoring options have the potential to be less expensive and more effective. Three options are the most promising if high verification confidence is desired: random monitoring using door sensors; random monitoring using manned or unmanned aircraft; and continuous remote monitoring using unattended door sensors.

  15. Aerodynamics of a rolling airframe missile

    NASA Astrophysics Data System (ADS)

    Tisserand, L. E.

    1981-05-01

    For guidance-related reasons, there is considerable interest in rolling missiles having single-plane steering capability. To aid the aerodynamic design of these airframes, a unique investigation into the aerodynamics of a rolling, steering missile has been carried out. It represents the first known attempt to measure in a wind tunnel the aerodynamic forces and moments that act on a spinning body-canard-tail configuration that exercises canard steering in phase with body roll position. Measurements were made with the model spinning at steady-state roll rates ranging from 15 to 40 Hz over an angle-of-attack range up to about 16 deg. This short, exploratory investigation has demonstrated that a better understanding and a more complete definition of the aerodynamics of rolling, steering vehicles can be developed by way of simulative wind-tunnel testing.

  16. Non-Rocket Missile Rope Launcher

    NASA Technical Reports Server (NTRS)

    Bolonkin, Alexander

    2002-01-01

    The method, installation, and estimation for delivering payload and missiles into outer space are presented. This method uses, in general, the engines and straight or closed-loop cables disposed on a planet surface. The installation consists of a space apparatus, power drive stations located along trajectory of the apparatus, the cables connected to the apparatus and to the power stations, a system for suspending the cable, and disconnected device. The drive stations accelerate the apparatus up to hypersonic speed. The estimations and computations show the possibility of making these projects a reality in a short period of time (see attached project: launcher for missiles and loads). The launch will be very cheap $1-$2 per LB. We need only light strong cable, which can be made from artificial fibers, whiskers, nanotubes, which exist in industry and scientific laboratories.

  17. Confronting the Real Missile Threat: Iran or North Korea

    DTIC Science & Technology

    2012-02-01

    acquisitions include a variant of the DPRK Musudan missile which has a range of over 3,000 kilometers.26 Iran possesses a large Shahab 3 missile inventory...DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DD-MM-YYYY) 01-02-2012 2. REPORT TYPE Strategy Research Project 3 . DATES COVERED...missiles and the capability to deliver 3 weapons of mass destruction over the past decade have made the political and military effects of these

  18. Nonlinear applications of slender-body theory to missile aerodynamics

    NASA Technical Reports Server (NTRS)

    Hemsch, M. J.

    1985-01-01

    An evaluation is made of six diverse examples of nonlinear treatments of slender body theory for the prediction of missile aerodynamic behavior. The cases in question are the application of area rule to store carriage design in the drag rise region, the estimation of destabilizing pitching moments associated with transonic projectiles, the pressure loadings on elliptical missile airframes, nonlinear control characteristics, roll control effectiveness in canard missile configurations, and novel approaches for vortex flow modeling.

  19. 1997 Report to the Congress on Ballistic Missile Defense.

    DTIC Science & Technology

    2007-11-02

    AADC to the JFACC. Figure 2-4 shows a joint force structure . The joint nature of TMD operations may be most evident in the missile detection and...support the joint force structure . 2-6 Theater Missile Defense Figure 2-4. Joint Force Structure Joint Forces Commander JFACC/AADC Army Forces...the Gulf War, U.S. TMD forces were already in place, trained, and integrated into the joint force structure when the first enemy missiles were

  20. Non-latching relay switch assembly

    DOEpatents

    Duimstra, Frederick A.

    1991-01-01

    A non-latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes a permanent magnet and an electromagnet. The respective sections are arranged in separate locations or cavities in the assembly. The switch has a "normal" position and is selectively switched by an overriding electromagnetic assembly. The switch returns to the "normal" position when the overriding electromagnetic assembly is inactive.

  1. Dictionary of Missile and Artillery Terms

    DTIC Science & Technology

    1982-05-20

    of the target (objective) and of missile launcher or piece (mortar) in space , as well as firing conditions differing from tabular data . ISKhODNYY...and referring to the flight trajectory. MANEVRIRUYuShchIY KOSMIChESKIY LETATEL’NYY APPARAT [Haneuver4nL :r-ace Airborne Platform] -- space airborne...TERMS Bv: A.P. Bogatskiy, F.S. Kuznetsov, A.F. Shapovalov English pages: 280 Source: Sloavr’ Raketnykh i Artilleriyulcikh Terminov, Publishing House

  2. Theater Ballistic Missile Defense from the Sea

    DTIC Science & Technology

    1998-08-01

    Engagement. The confluence of political constraints on U.S. actions and the tactical challenges posed by the speed and lethality of enemy TBM-WMD systems...warfare. In speed and altitude, they exceed the envelope of conventional Air Warfare (AW) defenses. In range, they may cross AOR boundaries of geographic...system of systems,Third World theater ballistic missiles stand alone and must rely on speed and brute force. The solution for poor targeting of denied

  3. Ballistic Missile Proliferation: An Emerging Threat 1992

    DTIC Science & Technology

    1992-10-01

    Soviets. Hepatitis A >4 weeks Hepatitis B >4 weeks A 1970 World Health Organization report con- Turberculosis >4 weeks cluded that biological warfare was...Chairman Dr. Robert R. Everett Dr. W. A. Nierenberg Mr. Daniel J. Fink Gen. B . A. Schriever (USAF, Ret.) Dr. O’Dean Judd Dr. Frederick Seitz Dr. Hans...range ballistic missiles include the developing countries-after another 20-year Soviet Union (Scud B ), North Korea (Scuds B and delay. However, the

  4. Optical Pattern Recognition for Missile Guidance.

    DTIC Science & Technology

    1979-10-01

    crystal, missile guidance, multi-sensor pattern recognition, normalized invariant moments, optical data processing , optical patterni recognition, photo...computing1 offers the attractive features vided in Sec. II for completeness and to enable future of parallel processing in real time and thus has been of...Fourier plane, Eq. (5) is used. rameter in coherent optical processing application. We In practice, MTF as defined is really a contrast transfer can

  5. The Evolution of the Cruise Missile

    DTIC Science & Technology

    1985-09-01

    device as a target in operations with the cartier Ranger in August, 1938. These and subqueat practice sessions revealed shockingly poor US Navy... market within a very short time." TIhe author speculated that the device could destroy an entire town as far as 100 miks away with no loss te the...downed 72.8 percent of the 125 missiles observed. Nevertheless, one flying bomb hit Smithfield Market on 8 March, causing 233 casualties.61 In all, the

  6. Software Tools for Nonlinear Missile Autopilot Design

    DTIC Science & Technology

    1999-01-01

    Copyright 1999 by Optimal Synthesis . All Rights Reserved. Software Tools for Nonlinear Missile Autopilot Design P.K. Menon * , V.R. Iragavarapu...and G. Sweriduk ‡ Optimal Synthesis Inc. 470 San Antonio Road, Suite 200 Palo Alto, CA 94306 E. J. Ohlmeyer § Naval Surface Warfare Center Dahlgren, VA...Abstract A computer-aided design software package for nonlinear control synthesis is discussed. The software incorporates five different modern

  7. The Future of Theater Missile Defense

    DTIC Science & Technology

    1994-06-01

    withERINT) 1,500 IVf 74C 1998 3.0 Navy Lower-Tier Defense 1,820 SO4 50* 1999° 3* THAAD(withTMD-GBR) 1,313 80 14 2001e 9.1 AdvaaoedCapabflitylMD Systems...Administration cannot, by itself, provide a sufficient buffer between theater and strategic missile defenses. Other limits must be included. Finally, the

  8. Countermeasures to the US National Missile Defense

    NASA Astrophysics Data System (ADS)

    Gronlund, Lisbeth

    2001-04-01

    One of the key technical questions about national missile defenses is whether they can be expected to work under real-world conditions if the attacker takes steps to defeat the defense. This talk will discuss steps that an emerging missile state could take to confuse, overwhelm, or otherwise defeat the planned US NMD system developed by the Clinton administration. It will consider three such ``countermeasures" that would be within the technical capability of a state that could develop and deploy a long-range missile capable of reaching the United States, which is the threat the NMD system is intended to defend against. The talk will be based on the April 2000 report ``Countermeasures: A Technical Evaluation of the Operational Effectiveness of the Planned US National Missile Defense System," which was co-authored by the speaker and 10 other physicists and engineers. Although the talk will refer to the ground-based NMD system under development, the conclusions are applicable to any mid-course NMD system using hit-to-kill infrared-homing interceptors, regardless of their basing mode. The three countermeasures considered are: (1) biological weapons deployed on 100 or more small bomblets, or submunitions, that would be released shortly after the boost phase; (2) nuclear warheads with anti-simulation balloon decoys, in which the attacker disguises the warhead by enclosing it in an aluminum-coated mylar balloon and releasing it along with a large number of otherwise similar but empty balloons; and (3) nuclear warheads with cooled shrouds, in which the attacker foils the kill vehicle's homing process by covering each nuclear warhead with a double-walled cone containing liquid nitrogen.

  9. Optical Data Processing for Missile Guidance.

    DTIC Science & Technology

    1981-10-01

    year, our research in optical data processing for missile guidance has addressed various new algorithms, system architectures, component tests , and...the optical processor. During the past year, we have performed a test and evaluation of five Soviet rrom and Priz light modulators. The results of...the use of different aper- -5- tures during synthesis of the matched spatial filter and during correlation with the on-line sensed image. In this

  10. Boost Control Design for Spinning Missile.

    DTIC Science & Technology

    1985-12-01

    Computer Hkq)i.neering Dean iSc~c and Engineering 2 ABDSTRDACT A compensation scheme is presented for the pitch-yaw control system of a strategic missile...section. Based upon predeter- mined flight trajectories and measured or estimated parame- ters duriug f light, the guidance computer generates pitch and...yaw commands and transmits these to the pitch-yaw controller [Ref. 2]. The algorithm which the guidance computer uses to generate the pitch and yaw

  11. Stability of missile forces and defenses

    SciTech Connect

    Canavan, G.H.

    1997-04-01

    This note derives the exchange equation for mixes of missiles and defenses and discusses the impact on stability of varying their relative proportions. For fixed offenses increasing defenses decreases stability until first strikes fall to zero. The same is true of decreasing offenses for fixed defenses, although the decrease in indices is smaller. A judicious increase in defenses and decrease in offenses should effect that transition with minimum loss of stability.

  12. Relay Support for the Mars Science Laboratory and the Coming Decade of Mars Relay Network Evolution

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, Bradford W.; Bell, David J.; Bruvold, Kristoffer N.; Gladden, Roy E.; Ilott, Peter A.; Lee, Charles H.

    2012-01-01

    In the past decade, an evolving network of Mars relay orbiters has provided telecommunication relay services to the Mars Exploration Rovers, Spirit and Opportunity, and to the Mars Phoenix Lander, enabling high-bandwidth, energy-efficient data transfer and greatly increasing the volume of science data that can be returned from the Martian surface, compared to conventional direct-to-Earth links. The current relay network, consisting of NASA's Odyssey and Mars Reconnaissance Orbiter and augmented by ESA's Mars Express Orbiter, stands ready to support the Mars Science Laboratory, scheduled to arrive at Mars on Aug 6, 2012, with new capabilities enabled by the Electra and Electra-Lite transceivers carried by MRO and MSL, respectively. The MAVEN orbiter, planned for launch in 2013, and the ExoMars/Trace Gas Orbiter, planned for launch in 2016, will replenish the on-orbit relay network as the current orbiter approach their end of life. Currently planned support scenarios for this future relay network include an ESA EDL Demonstrator Module deployed by the 2016 ExoMars/TGO orbiter, and the 2018 NASA/ESA Joint Rover, representing the first step in a multimission Mars Sample Return campaign.

  13. Relay Support for the Mars Science Laboratory and the Coming Decade of Mars Relay Network Evolution

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D., Jr.; Arnold, Bradford W.; Bell, David J.; Bruvold, Kristoffer N.; Gladden, Roy E.; Ilott, Peter A.; Lee, Charles H.

    2012-01-01

    In the past decade, an evolving network of Mars relay orbiters has provided telecommunication relay services to the Mars Exploration Rovers, Spirit and Opportunity, and to the Mars Phoenix Lander, enabling high-bandwidth, energy-efficient data transfer and greatly increasing the volume of science data that can be returned from the Martian surface, compared to conventional direct-to-Earth links. The current relay network, consisting of NASA's Odyssey and Mars Reconnaissance Orbiter and augmented by ESA's Mars Express Orbiter, stands ready to support the Mars Science Laboratory, scheduled to arrive at Mars on Aug 6, 2012, with new capabilities enabled by the Electra and Electra-Lite transceivers carried by MRO and MSL, respectively. The MAVEN orbiter, planned for launch in 2013, and the ExoMars/Trace Gas Orbiter, planned for launch in 2016, will replenish the on-orbit relay network as the current orbiter approach their end of life. Currently planned support scenarios for this future relay network include an ESA EDL Demonstrator Module deployed by the 2016 ExoMars/TGO orbiter, and the 2018 NASA/ESA Joint Rover, representing the first step in a multimission Mars Sample Return campaign.

  14. Adjustable electronic load-alarm relay

    DOEpatents

    Mason, Charles H.; Sitton, Roy S.

    1976-01-01

    This invention is an improved electronic alarm relay for monitoring the current drawn by an AC motor or other electrical load. The circuit is designed to measure the load with high accuracy and to have excellent alarm repeatability. Chattering and arcing of the relay contacts are minimal. The operator can adjust the set point easily and can re-set both the high and the low alarm points by means of one simple adjustment. The relay includes means for generating a signal voltage proportional to the motor current. In a preferred form of the invention a first operational amplifier is provided to generate a first constant reference voltage which is higher than a preselected value of the signal voltage. A second operational amplifier is provided to generate a second constant reference voltage which is lower than the aforementioned preselected value of the signal voltage. A circuit comprising a first resistor serially connected to a second resistor is connected across the outputs of the first and second amplifiers, and the junction of the two resistors is connected to the inverting terminal of the second amplifier. Means are provided to compare the aforementioned signal voltage with both the first and second reference voltages and to actuate an alarm if the signal voltage is higher than the first reference voltage or lower than the second reference voltage.

  15. Automation of servicibility of radio-relay station equipment

    NASA Astrophysics Data System (ADS)

    Uryev, A. G.; Mishkin, Y. I.; Itkis, G. Y.

    1985-03-01

    Automation of the serviceability of radio relay station equipment must ensure central gathering and primary processing of reliable instrument reading with subsequent display on the control panel, detection and recording of failures soon enough, advance enough warning based on analysis of detertioration symptoms, and correct remote measurement of equipment performance parameters. Such an inspection will minimize transmission losses while reducing nonproductive time and labor spent on documentation and measurement. A multichannel automated inspection system for this purpose should operate by a parallel rather than sequential procedure. Digital data processing is more expedient in this case than analog method and, therefore, analog to digital converters are required. Spepcial normal, above limit and below limit test signals provide means of self-inspection, to which must be added adequate interference immunization, stabilization, and standby power supply. Use of a microcomputer permits overall refinement and expansion of the inspection system while it minimizes though not completely eliminates dependence on subjective judgment.

  16. Quantum relay schemes for continuous-variable quantum key distribution

    NASA Astrophysics Data System (ADS)

    Guo, Ying; Liao, Qin; Huang, Duan; Zeng, Guihua

    2017-04-01

    We propose several concatenated quantum relay continuous-variable quantum key distribution schemes based on the parametric amplifier (PA) and the beam splitter (BS). Instead of using only one BS in the traditional relay scheme, the proposed schemes provide two operations that involve both PA and BS, activating the beam splitting and recombining operations in turn. These schemes would benefit the system performance improvement by providing signal amplification and establishing quantum correlations. We show that the different effects of the relay schemes will cause different system performances because of the varied signal-to-noise ratio (SNR) of output fields. The system's secret key rate will be increased when equipping with the PA-BS relay scheme, because the output fields of the PA are entangled with the correlated quantum noises while input fields of the BS are superimposed, subsequently leading to the quantum noise reduction of the total output fields of relay station, while the reversed BS-PA relay scheme has little advantage over the traditional counterpart that contains only one BS in relay data postprocessing because it will not cause any SNR improvement. Moreover, the reinforced PA-PA relay scheme results in a slight improvement due to the increased SNR. These quantum relay schemes can be performed through the beam splitting, the recombining operations, and the relay data postprocessing, such that it would be suitable for secret information exchange in complex networks with intermediate stations.

  17. An Aerodynamic Analysis of a Spinning Missile with Dithering Canards

    NASA Technical Reports Server (NTRS)

    Meakin, Robert L.; Nygaard, Tor A.

    2003-01-01

    A generic spinning missile with dithering canards is used to demonstrate the utility of an overset structured grid approach for simulating the aerodynamics of rolling airframe missile systems. The approach is used to generate a modest aerodynamic database for the generic missile. The database is populated with solutions to the Euler and Navier-Stokes equations. It is used to evaluate grid resolution requirements for accurate prediction of instantaneous missile loads and the relative aerodynamic significance of angle-of-attack, canard pitching sequence, viscous effects, and roll-rate effects. A novel analytical method for inter- and extrapolation of database results is also given.

  18. Laser beam riding artillery missiles guidance device is designed

    NASA Astrophysics Data System (ADS)

    Yan, Mingliang; Huo, Zhicheng; Chen, Wei

    2014-09-01

    Laser driving gun missile guidance type beam of laser information field formed by any link failure or reduced stability will directly lead to ballistic or miss out of control, and based on this, this paper designed the driving beam of laser guided missile guidance beam type forming device modulation and zoom mechanism, in order to make the missile can recognize its position in the laser beam, laser beam gun missile, by means of spatial encoding of the laser beam laser beam into information after forming device, a surface to achieve the purpose of precision guidance.

  19. Profile of missile-induced cardiovascular injuries in Kashmir, India

    PubMed Central

    Wani, Mohd Lateef; Ahangar, Abdul Gani; Lone, Gh Nabi; Hakeem, Zubair Ashraf; Dar, Abdul Majeed; Lone, Reyaz Ahmad; Bhat, Mohd Akbar; Singh, Shyam; Irshad, Ifat

    2011-01-01

    Background: Missile cardiovascular injuries have taken an epidemic proportion in Kashmir valley since the eruption of militancy in 1990. Present study was undertaken to analyse the pattern, presentation and management of missile cardiovascular injuries. Patients and Methods: Three hundred and eighty-six patients with missile cardiovascular injuries since Jan 1996 to Oct 2008 were studied retrospectively. All patients of cardiovascular injuries due to causes other than missiles were excluded from the study. Results: All patients of missile cardiac injuries were treated by primary cardiorrhaphy. Right ventricle was the most commonly affected chamber. Left anterior thoracotomy was most common approach used. Most of the patients of missile vascular group were treated by reverse saphenous vein graft or end-to-end anastomosis. Most common complication was wound infection (20.83%) followed by graft occlusion (1.94%) in missile vascular group. Amputation rate was 4.66%. Amputation rate was higher in patients with delay of >6 hours and associated fractures. Conclusion: Missile cardiac injuries should be operated early without wasting time for investigations. Clinical status at arrival, time interval till management, nature of injury and associated injuries, tell upon the mortality. Missile vascular injury needs prompt resuscitation and revascularization at the earliest. Time interval till revascularization and associated fractures has a bearing on mortality and morbidity. PMID:21769201

  20. Brazil, the United States, and the missile technology control regime

    NASA Astrophysics Data System (ADS)

    Tollefson, Scott D.

    1990-03-01

    This technical report analyzes Brazil's development of ballistic missiles in light of U.S. pressures to stifle that development. The first section describes and critiques the Missile Technology Control Regime (MTCR); the second analyzes the U.S. application of MTCR guidelines toward Brazil; the third assesses Brazil's ballistic missile capabilities; and the fourth considers Brazil's response. The report concludes that the U.S. policy of restricting space and missile technology to Brazil under the MTCR has succeeded in stalling Brazil's missile program, but has also: (1) further strained Brazilian security relations with the United States; (2) weakened U.S. influence over Brazil's rocket and missile programs; (3) strengthened Brazilian ties with European suppliers (especially France) of space and missile technology; (4) driven Brazil into closer technological cooperation with the People's Republic of China and the Soviet Union; and (5) intensified Brazilian negotiations with Iraq and Libya. As Brazil moves away from the United States (its traditional supplier of space and missile technology), it is becoming relatively more autonomous and less vulnerable to U.S. restrictions on space and missile technology. The successful implementation of an internationalist development strategy by Brazil's new president, Fernando Collor de Mello, could provide the United States with an exceptional opportunity to improve relations with Brazil.

  1. Flight testing air-to-air missiles for flutter

    NASA Technical Reports Server (NTRS)

    Kutschinski, C. R.

    1975-01-01

    The philosophy of the design of air-to-air missiles and hence of flight testing them for flutter differs from that of manned aircraft. Primary emphasis is put on analytical and laboratory evaluation of missile susceptibility to aeroelastic and aero-servo-elastic instabilities and uses flight testing for confirmation of the absence of such instabilities. Flight testing for flutter is accomplished by using specially instrumented programmed missiles, air or ground launched with a booster to reach the extreme flight conditions of tactical use, or by using guided missiles with telemetered performance data. The instrumentation and testing techniques are discussed along with the success of recent flight tests.

  2. 3. MAGAZINE P STAIRWAY ENCLOSURE, LOOKING NORTHEAST. NIKE Missile ...

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

    3. MAGAZINE P STAIRWAY ENCLOSURE, LOOKING NORTHEAST. - NIKE Missile Base C-84, Underground Storage Magazines & Launcher-Loader Assemblies, Easternmost portion of launch area, Barrington, Cook County, IL

  3. Aerodynamic Predictions, Comparisons, and Validations Using MissileLab and Missile Datcom (97)

    DTIC Science & Technology

    2008-12-01

    the course of this work. I would also like to give special thanks to Dr. William Blake of USAF and Mr. Lamar Auman , U.S. Army AMRDEC for permitting...1998-3009, 1998. [5] Lamar M. Auman , MissileLab User’s Guide, AMR-SS-06-12, Feb 2006. [6] Steven Zaloga, Red Sam: The SA-2 Guideline Anti...Discrepancies due to Angle of Attack Effects in Missile Datcom, AIAA-2005-4833, 2005. [8] Christopher Rosema, Mark Underwood and Lamar Auman , Recent Fin

  4. Cooperative Transmission for Relay Networks Based on Second-Order Statistics of Channel State Information

    NASA Astrophysics Data System (ADS)

    Li, Jiangyuan; Petropulu, Athina P.; Poor, H. Vincent

    2011-03-01

    Cooperative beamforming in relay networks is considered, in which a source transmits to its destination with the help of a set of cooperating nodes. The source first transmits locally. The cooperating nodes that receive the source signal retransmit a weighted version of it in an amplify-and-forward (AF) fashion. Assuming knowledge of the second-order statistics of the channel state information, beamforming weights are determined so that the signal-to-noise ratio (SNR) at the destination is maximized subject to two different power constraints, i.e., a total (source and relay) power constraint, and individual relay power constraints. For the former constraint, the original problem is transformed into a problem of one variable, which can be solved via Newton's method. For the latter constraint, the original problem is transformed into a homogeneous quadratically constrained quadratic programming (QCQP) problem. In this case, it is shown that when the number of relays does not exceed three the global solution can always be constructed via semidefinite programming (SDP) relaxation and the matrix rank-one decomposition technique. For the cases in which the SDP relaxation does not generate a rank one solution, two methods are proposed to solve the problem: the first one is based on the coordinate descent method, and the second one transforms the QCQP problem into an infinity norm maximization problem in which a smooth finite norm approximation can lead to the solution using the augmented Lagrangian method.

  5. Laser Communications Relay Demonstration (LCRD) Update and the Path Towards Optical Relay Operations

    NASA Technical Reports Server (NTRS)

    Israel, David J.; Edwards, Bernard L.; Staren, John W.

    2017-01-01

    This paper provides a concept for an evolution of NASA's optical communications near Earth relay architecture. NASA's Laser Communications Relay Demonstration (LCRD), a joint project between NASA's Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory - California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT LL). LCRD will provide a minimum of two years of high data rate optical communications service experiments in geosynchronous orbit (GEO), following launch in 2019. This paper will provide an update of the LCRD mission status and planned capabilities and experiments, followed by a discussion of the path from LCRD to operational network capabilities.

  6. Laser Communications Relay Demonstration (LCRD) Update and the Path Towards Optical Relay Operations

    NASA Technical Reports Server (NTRS)

    Israel, David J.; Edwards, Bernard L.; Staren, John W.

    2017-01-01

    This Presentation provides a concept for an evolution of NASAs optical communications near Earth relay architecture. NASA's Laser Communications Relay Demonstration (LCRD), a joint project between NASAs Goddard Space Flight Center (GSFC), the Jet Propulsion Laboratory - California Institute of Technology (JPL), and the Massachusetts Institute of Technology Lincoln Laboratory (MIT LL). LCRD will provide a minimum of two years of high data rate optical communications service experiments in geosynchronous orbit (GEO), following launch in 2019. This paper will provide an update of the LCRD mission status and planned capabilities and experiments, followed by a discussion of the path from LCRD to operational network capabilities.

  7. Overview of optical data relay system in JAXA

    NASA Astrophysics Data System (ADS)

    Chishiki, Y.; Yamakawa, S.; Takano, Y.; Miyamoto, Y.; Araki, T.; Kohata, H.

    2016-03-01

    To meet increasing demands of high-speed data transmission, JAXA has started to develop a new optical data relay system. This system provides 1.8Gbit/s data relay service through optical inter-satellite link and Ka-band feeder link using JDRS, a data relay satellite. The first user satellite is the Advanced Optical Satellite, a Japanese optical observation satellite in low earth orbit. As a total data relay system, the data relay satellite, Ka-band ground stations and two optical terminals for JDRS and the Advanced Optical Satellite are developed together. Target launch year of JDRS is 2019 in Japanese fiscal year. This paper describes the development plan and technologies of the optical data relay system.

  8. IR sensor design insight from missile-plume prediction models

    NASA Astrophysics Data System (ADS)

    Rapanotti, John L.; Gilbert, Bruno; Richer, Guy; Stowe, Robert

    2002-08-01

    Modern anti-tank missiles and the requirement of rapid deployment have significantly reduced the use of passive armour in protecting land vehicles. Vehicle survivability is becoming more dependent on sensors, computers and countermeasures to detect and avoid threats. An analysis of missile propellants suggests that missile detection based on plume characteristics alone may be more difficult than anticipated. Currently, the passive detection of missiles depends on signatures with a significant ultraviolet component. This approach is effective in detecting anti-aircraft missiles that rely on powerful motors to pursue high-speed aircraft. The high temperature exhaust from these missiles contains significant levels of carbon dioxide, water and, often, metal oxides such as alumina. The plumes emits strongest in the infrared, 1 to 5micrometers , regions with a significant component of the signature extending into the ultraviolet domain. Many anti-tank missiles do not need the same level of propulsion and radiate significantly less. These low velocity missiles, relying on the destructive force of shaped-charge warhead, are more difficult to detect. There is virtually no ultraviolet component and detection based on UV sensors is impractical. The transition in missile detection from UV to IR is reasonable, based on trends in imaging technology, but from the analysis presented in this paper even IR imagers may have difficulty in detecting missile plumes. This suggests that the emphasis should be placed in the detection of the missile hard body in the longer wavelengths of 8 to 12micrometers . The analysis described in this paper is based on solution of the governing equations of plume physics and chemistry. These models will be used to develop better sensors and threat detection algorithms.

  9. Cost of space-based laser ballistic missile defense

    SciTech Connect

    Field, G.; Spergel, D.

    1986-03-21

    Orbiting platforms carrying infrared lasers have been proposed as weapons forming the first tier of a ballistic missile defense system under the President's Strategic Defense Initiative. As each laser platform can destroy a limited number of missiles, one of several methods of countering such a system is to increase the number of offensive missiles. Hence it is important to know whether the cost-exchange ratio, defined as the ratio of the cost to the defense of destroying a missile to the cost to the offense of deploying an additional missile, is greater or less than 1. Although the technology to be used in a ballistic missile defense system is still extremely uncertain, it is useful to examine methods for calculating the cost-exchange ration. As an example, the cost of an orbiting infrared laser ballistic missile defense system employed against intercontinental ballistic missiles launched simultaneously from a small area is compared to the cost of additional offensive missiles. If one adopts lower limits to the costs for the defense and upper limits to the costs for the offense, the cost-exchange ratio comes out substantially greater than 1. If these estimates are confirmed, such a ballistic missile defense system would be unable to maintain its effectiveness at less cost than it would take to proliferate the ballistic missiles necessary to overcome it and would therefore not satisfy the President's requirements for an effective strategic defense. Although the method is illustrated by applying it to a space-based infrared laser system, it should be straightforward to apply it to other proposed systems. 28 references, 2 tables.

  10. Cost of space-based laser ballistic missile defense.

    PubMed

    Field, G; Spergel, D

    1986-03-21

    Orbiting platforms carrying infrared lasers have been proposed as weapons forming the first tier of a ballistic missile defense system under the President's Strategic Defense Initiative. As each laser platform can destroy a limited number of missiles, one of several methods of countering such a system is to increase the number of offensive missiles. Hence it is important to know whether the cost-exchange ratio, defined as the ratio of the cost to the defense of destroying a missile to the cost to the offense of deploying an additional missile, is greater or less than 1. Although the technology to be used in a ballistic missile defense system is still extremely uncertain, it is useful to examine methods for calculating the cost-exchange ratio. As an example, the cost of an orbiting infrared laser ballistic missile defense system employed against intercontinental ballistic missiles launched simultaneously from a small area is compared to the cost of additional offensive missiles. If one adopts lower limits to the costs for the defense and upper limits to the costs for the offense, the cost-exchange ratio comes out substantially greater than 1. If these estimates are confirmed, such a ballistic missile defense system would be unable to maintain its effectiveness at less cost than it would take to proliferate the ballistic missiles necessary to overcome it and would therefore not satisfy the President's requirements for an effective strategic defense. Although the method is illustrated by applying it to a space-based infrared laser system, it should be straightforward to apply it to other proposed systems.

  11. On the HEMP environment for protective relays. [High-altitude electromagnetic pulse

    SciTech Connect

    Thomas, D.E.; Wiggins, C.M.; Salas, T.M. ); Barnes, P.R. )

    1994-01-01

    An assessment of the transient environment for protective relays produced by high-altitude electromagnetic pulse (HEMP) events is presented in this paper. Several mechanisms for coupling of HEMP to relay terminals are used to develop estimates of possible HEMP threats to relays. These predicted relay responses to HEMP events are compared to measured data on a solid state based relay's impulse strength.

  12. Health and Safety Plan, Kalakaket Creek, Radion Relay Station, Alaska

    DTIC Science & Technology

    1994-09-01

    Squadron Elmendorf AFB, Alaska Final Health and Safety Plan Kalakaket Creek Radio Relay Station , Alaska Accesion For NTIS CRA&M DTIC TAB U...Kalakaket Creek Radio Relay Station , Alaska C-F41624-94-D-804"-005 6. AUTHOR(S) Radian Corporation 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8...NUMBER OF PAGES Health and Safety Plan, Kalakaket Creek Radio Relay Station , Alaska 16. PRICE CODE 17. SECURITY CLASSIFICATION 18. SECURITY

  13. Sensitive DC ground fault relays for coal mines

    SciTech Connect

    Yenchek, M.R.; Trutt, F.C.; Kohler, J.L.; Morley, L.A.; Novak, T.

    1987-07-01

    Recent US Bureau of Mines sponsored research aimed at virtually eliminating electrocutions on dc utilization circuits has resulted in an effective dc circuit protection device, called a sensitive ground fault relay (GFR). This relay can detect and act to interrupt small deadly ground currents that can trigger ventricular fibrillation in humans while ignoring spurious power system signals. Initially relay performance criteria were established to ensure reliability for mine duty as well as effectiveness for shock prevention. Mineworthy prototypes, consisting of a saturable-transformer current sensor and an electronic relay, were constructed. They complied with the performance standards in laboratory tests.

  14. Optimum path selection in automated radio relay link design

    NASA Astrophysics Data System (ADS)

    Danilovich, O. S.; Kichigin, V. N.

    1985-01-01

    This study investigates the selection of the locations of radio relay stations so that the stability of the radio relay link satisfies the corresponding CCIR recommendations, so that the effective station construction and operation costs are minimized. A mathematical model for selecting the optimum radio relay link route is described. The construction of a hypothetical radio relay link 1400 km long with an average repeater section link of 50 km is analyzed as an example. The algorithm is shown to be especially effective for rough terrain where it is often impossible to place the stations close to roads.

  15. The European data relay system - Present concept and future evolution

    NASA Astrophysics Data System (ADS)

    Berretta, Giuliano; de Agostini, Agostino; Dickinson, Antony

    1990-07-01

    After briefly reviewing the users' requirements and the results of traffic scenario simulations needed to size the system, the design of the European data relay system (DRS) (ground and space segment) is presented in detail. The interrelationship with the other data relay systems (NASA tracking and data relay satellite system (TDRSS) and the Japanese data relay and tracking satellite system (DRTSS)) is discussed together with the current status of systems interoperability. The evolution of DRS into a second generation, foreseen for operation at the beginning of next century, is outlined in terms of user scenario, improved spacecraft and system configurations, and technology developments needed.

  16. Relay Telecommunications for the Coming Decade of Mars Exploration

    NASA Technical Reports Server (NTRS)

    Edwards, C.; DePaula, R.

    2010-01-01

    Over the past decade, an evolving network of relay-equipped orbiters has advanced our capabilities for Mars exploration. NASA's Mars Global Surveyor, 2001 Mars Odyssey, and Mars Reconnaissance Orbiter (MRO), as well as ESA's Mars Express Orbiter, have provided telecommunications relay services to the 2003 Mars Exploration Rovers, Spirit and Opportunity, and to the 2007 Phoenix Lander. Based on these successes, a roadmap for continued Mars relay services is in place for the coming decade. MRO and Odyssey will provide key relay support to the 2011 Mars Science Laboratory (MSL) mission, including capture of critical event telemetry during entry, descent, and landing, as well as support for command and telemetry during surface operations, utilizing new capabilities of the Electra relay payload on MRO and the Electra-Lite payload on MSL to allow significant increase in data return relative to earlier missions. Over the remainder of the decade a number of additional orbiter and lander missions are planned, representing new orbital relay service providers and new landed relay users. In this paper we will outline this Mars relay roadmap, quantifying relay performance over time, illustrating planned support scenarios, and identifying key challenges and technology infusion opportunities.

  17. Improving control performance across AWGN channels using a relay node†

    NASA Astrophysics Data System (ADS)

    Kumar, Utsaw; Liu, Jie; Gupta, Vijay; Laneman, J. Nicholas

    2014-07-01

    Consider an unstable linear time-invariant system in which the sensor transmits information to a controller across an additive white Gaussian noise channel. The designer can optionally utilise a relay node to assist the controller; however, the total transmission power consumed by the sensor and the relay node is constant. We consider two topologies: (1) a Gaussian relay channel and (2) a cascade of two Gaussian point-to-point channels. We propose coding schemes and present sufficient conditions for the stabilisability of the plant through such schemes. The analysis suggests that it is useful to utilise a relay node, even if the total transmission power remains the same.

  18. Relay Telecommunications for the Coming Decade of Mars Exploration

    NASA Technical Reports Server (NTRS)

    Edwards, C.; DePaula, R.

    2010-01-01

    Over the past decade, an evolving network of relay-equipped orbiters has advanced our capabilities for Mars exploration. NASA's Mars Global Surveyor, 2001 Mars Odyssey, and Mars Reconnaissance Orbiter (MRO), as well as ESA's Mars Express Orbiter, have provided telecommunications relay services to the 2003 Mars Exploration Rovers, Spirit and Opportunity, and to the 2007 Phoenix Lander. Based on these successes, a roadmap for continued Mars relay services is in place for the coming decade. MRO and Odyssey will provide key relay support to the 2011 Mars Science Laboratory (MSL) mission, including capture of critical event telemetry during entry, descent, and landing, as well as support for command and telemetry during surface operations, utilizing new capabilities of the Electra relay payload on MRO and the Electra-Lite payload on MSL to allow significant increase in data return relative to earlier missions. Over the remainder of the decade a number of additional orbiter and lander missions are planned, representing new orbital relay service providers and new landed relay users. In this paper we will outline this Mars relay roadmap, quantifying relay performance over time, illustrating planned support scenarios, and identifying key challenges and technology infusion opportunities.

  19. Modified Dynamic Decode-and-Forward Relaying Protocol for Type II Relay in LTE-Advanced and Beyond.

    PubMed

    Nam, Sung Sik; Alouini, Mohamed-Slim; Choi, Seyeong

    2016-01-01

    In this paper, we propose a modified dynamic decode-and-forward (MoDDF) relaying protocol to meet the critical requirements for user equipment (UE) relays in next-generation cellular systems (e.g., LTE-Advanced and beyond). The proposed MoDDF realizes the fast jump-in relaying and the sequential decoding with an application of random codeset to encoding and re-encoding process at the source and the multiple UE relays, respectively. A subframe-by-subframe decoding based on the accumulated (or buffered) messages is employed to achieve energy, information, or mixed combining. Finally, possible early termination of decoding at the end user can lead to the higher spectral efficiency and more energy saving by reducing the frequency of redundant subframe transmission and decoding. These attractive features eliminate the need of directly exchanging control messages between multiple UE relays and the end user, which is an important prerequisite for the practical UE relay deployment.

  20. Common Ada Missile Packages. Phase 2. (CAMP-2). Volume 2. 11th Missile Demonstration

    DTIC Science & Technology

    1988-11-01

    bii t Ui< «i > i martial Sanaor Aaaaaibly 11th Miaaila Syatam Figure 1. 11th Missile Hardware Design TABLE 2. PROCESSORS AND THEIR FUNCTIONS...ualng Two Value Aretangant Coaputa Wander Ailauth Angle ualng Two Value Aretangant SUBTOTALS 132 14» 20 »003 North »olntlng HaTlgatlon » arta Coaputa

  1. Ballistic Missile Defense Final Programmatic Environmental Impact Statement

    DTIC Science & Technology

    1994-10-01

    Potential cumulative impacts associated with stratospheric ozone depletion, global climate change, and biodiversity are global rather than local or...environmental documentation. Potential cumulative impacts to biodiversity from the BMD Program and other sources are not expected to be significant and will be...Ballistic Missile Defense Final Programmatic Environmental Impact .Statement Ballistic Missile Defense Organization 19980302 086 BMDOTIC DXC QUAL

  2. A History of Polish Anti-Missile Defenses

    DTIC Science & Technology

    1994-01-01

    tanks, 1,750 armored personnel carriers, transport 11 aircraft, helicopters, and several naval craft.ŕ The WOPK provided air space management and...targets which included missile-related threats.90 Comunnication was an integral part of missile warning. Since Poland’s WOPK was part of the PVOS, Warsaw

  3. 13. Photocopy of drawing of missile launcher from 'Procedures and ...

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

    13. Photocopy of drawing of missile launcher from 'Procedures and Drills for the NIKE Ajax System,' Department of the Army Field Manual, FM-44-80 from Institute for Military History, Carlisle Barracks, Carlisle, PA, 1956 - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  4. 6. Photocopy of photograph showing an Ajax and Hercules Missile ...

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

    6. Photocopy of photograph showing an Ajax and Hercules Missile from ARADCOM Argus pg. 3, from Institute for Military History, Carlisle Barracks, Carlisle, PA, October 1, 1958 - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  5. 10. Photocopy of drawing of missile shipping container from Procedures ...

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

    10. Photocopy of drawing of missile shipping container from Procedures and Drills for the NIKE Ajax System, Department of the Army Field Manual, FM-44-80 from Institute for Military History, Carlisle Barracks, Carlisle, PA 1956. - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  6. 7. Photocopy of photograph showing four Ajax missiles in launch ...

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

    7. Photocopy of photograph showing four Ajax missiles in launch position from ARADCOM Argus pg. 14, from Institute for Military History, Carlisle Barracks, Carlisle, PA, October 1, 1963 - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  7. 12. Photocopy of drawing of underground missile storage, elevator and ...

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

    12. Photocopy of drawing of underground missile storage, elevator and ground-level launchers from 'Procedures and Drills for the NIKE Ajax System,' Department of the Army Field Manual, FM-44-80 from Institute for Military History, Carlisle Barracks, Carlisle, PA, 1956 - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  8. 11. Photocopy of drawing of underground missile storage and elevator ...

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

    11. Photocopy of drawing of underground missile storage and elevator controls from 'Procedures and Drills for the NIKE Ajax System,' Department of the Army Field Manual, FM-44-80 from Institute for Military History, Carlisle Barracks, Carlisle, PA, 1956 - NIKE Missile Battery PR-79, East Windsor Road south of State Route 101, Foster, Providence County, RI

  9. Intellectual Impairment Following Missile Wounds to the Brain: Initial Assessment

    DTIC Science & Technology

    1989-12-01

    respectively in patients with penetrating missile wounds to the brain. Black and Strub (1976) investigated constructicnal apraxia in this patient population...Strub, R.L. (1976). Contructionl apraxia in patients with discrete missile wounds of the brain. CORTEX. 12. 3, 212-220. Bolton, N.L., Savage, R.D

  10. Broad Trends in Chinese Air Force and Missile Modernization

    DTIC Science & Technology

    2014-01-30

    high priority targets of the PLAAF and Second Artillery. Will equipping ballistic missiles with multiple independently targetable reentry vehicles...of technologies that could be used to counter ballistic missile defense systems, including maneuverable reentry vehicles (MaRVs), MIRVs, decoys...of nuclear release authority for a larger, more dispersed force. I do not have additional information available regarding upgrades via imported

  11. International defenses against ballistic missile attack: Now, more than ever

    SciTech Connect

    Wood, L.

    1991-03-04

    This speech, made soon after Desert Storm, presents ideas on the threat of ballistic missiles to the United States. The availability of the missiles to third world countries is discussed. Strong support for the assigned mission of the Strategic Defense Initiative Organization known as Global Protection Against Limited Strikes (GPALS) is made. Also, implications to the ABM treaty are made. (GHH)

  12. Introduction of Women into Titan II Missile Operations.

    DTIC Science & Technology

    1981-03-01

    areas (weapons system orientation: mnaintenance management. electronics principles , and technical publications. facility systems and missile Sfstents...Management. Electronics Principles . Technical Publications 97.00 2.63 94.04 5.27 2.31 Facility Systems 92.25 4.61 93.2) 5.80 -.62 Missile Systems 96.67 2.90

  13. 13. Missile site control building, third and fourth floor interior, ...

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

    13. Missile site control building, third and fourth floor interior, showing east corner and former electrical equipment area, room #306. This building was salvaged and sealed in the 1970's; the lower floors also suffered flooding - Stanley R. Mickelsen Safeguard Complex, Missile Site Control Building, Northeast of Tactical Road; southeast of Tactical Road South, Nekoma, Cavalier County, ND

  14. Tactical Ballistic Missile Defense for the United States Marine Corps

    DTIC Science & Technology

    1992-04-01

    Tactical Ballistic Missile Defense for the United States Marine Corps Lieutenant Colonel Robert C. Dodt, Jr. Corps Acceso o U. S. Marine Crs NTIS CRA...target. The Hawk system then indicated that the target was engageable and multiple simulated missile firings were performed. The data from this test

  15. Paths of Target Seeking Missiles in Two Dimensions

    NASA Technical Reports Server (NTRS)

    Watkins, Charles E.

    1946-01-01

    Parameters that enter into equation of trajectory of a missile are discussed. Investigation is made of normal pursuit, of constant, proportional, and line--of-sight methods of navigation employing target seeker, and of deriving corresponding pursuit paths. Pursuit paths obtained under similar conditions for different methods are compared. Proportional navigation is concluded to be best method for using target seeker installed in missile.

  16. Optimizing Aegis Ship Stationing for Active Theater Missile Defense

    DTIC Science & Technology

    1993-09-01

    Suite 1204, Arlington, VA 222024302, and to the Office of Mamagement and Budget, Paperwork Reduction Project (0704-0188) Walshington DC 20503. 1...have ballistic missiles. According to intelligence projections , nearly 40 will acquire or produce their own missiles by the end of the decade. The

  17. Sensitivity and Robustness Analysis for Sea-Skimming Missile

    DTIC Science & Technology

    1986-09-01

    variation of the aerodynamic parameters of the autopilot /airframe of the missile; c) Analysis of the time response with respect to the variation of...aerodynamic parameters of tne autopilot /airframe of the missile. c) Analysis of the time response with respect to the variation of the aerodynamic...21 C. THE AUTOPILOT /AIRFRAME--------------------------- 25 D. TIME RESPONSE-------------------------------------- 27 III

  18. Aerodynamic performances of cruise missile flying above local terrain

    NASA Astrophysics Data System (ADS)

    Ahmad, A.; Saad, M. R.; Che Idris, A.; Rahman, M. R. A.; Sujipto, S.

    2016-10-01

    Cruise missile can be classified as a smart bomb and also Unmanned Aerial Vehicle (UAV) due to its ability to move and manoeuvre by itself without a pilot. Cruise missile flies in constant velocity in cruising stage. Malaysia is one of the consumers of cruise missiles that are imported from other nations, which can have distinct geographic factors including their local terrains compared to Malaysia. Some of the aerodynamic performances of missile such as drag and lift coefficients can be affected by the local geographic conditions in Malaysia, which is different from the origin nation. Therefore, a detailed study must be done to get aerodynamic performance of cruise missiles that operate in Malaysia. The effect of aerodynamic angles such as angle of attack and side slip can be used to investigate the aerodynamic performances of cruise missile. Hence, subsonic wind tunnel testings were conducted to obtain the aerodynamic performances of the missile at various angle of attack and sideslip angles. Smoke visualization was also performed to visualize the behaviour of flow separation. The optimum angle of attack found was at α=21° and side slip, β=10° for optimum pitching and yawing motion of cruise missile.

  19. 76 FR 24442 - Structure and Practices of the Video Relay Service Program; Telecommunications Relay Services and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-02

    ... tentatively concludes that it will extend the current video relay service (VRS) rates for the upcoming fund... proposes to maintain the current rates until new VRS rules are adopted. The intended effect of this action..., 2011, in CG Docket Nos. 10-51 and 03-123, seeking comment on a proposal to extend the current VRS...

  20. Beam Control of Extremely Agile Relaying Laser Source for Bifocal Relay Mirror Spacecraft

    DTIC Science & Technology

    2006-09-01

    imaging, and a laser fence for aircraft detection and underground structure detection. 3 3. Bifocal Relay Mirror Laboratory In 2000, a...deinitialize frame-grabber camera clear - mex ; Set_Iterations = 1200; % Set the number of iterations the tracking sequence will run

  1. Laser Communications Relay Demonstration: Introduction for Experimenters

    NASA Technical Reports Server (NTRS)

    Israel, David J.

    2017-01-01

    This document provides guidance to individuals or groups considering proposing an experiment for the Laser Communications Relay Demonstration (LCRD) Experiment Program. For the purposes of this document, the term experiment refers to both experiments and demonstrations. The documents goals are: (1) to introduce potential experimenters to the LCRD mission, its purpose, and its system architecture; (2) to help them understand the types of experiments that are possible using LCRD; and (3) to provide an overview of the experiment proposal process and explain how and where to obtain further information about making a proposal.

  2. The Clinton plan for theater missile defenses: Costs and alternatives

    SciTech Connect

    Mosher, D.; Hall, R.

    1994-09-01

    Since the Gulf War, the Department of Defense has placed a high priority on developing defenses against theater ballistic missiles (TBMs). Over the past two years the Clinton administration has redirected the focus of the Ballistic Missile Organization (BMDO, formerly the Strategic Defense Initiative Organization) away from a national missile defense system and toward the development of theater missile defenses (TMDs). But the plan put forward by the administration is expensive - as much as $50 billion through the year 2010 - and it also raises several important issues about compliance with the Anti-Ballistic Missile (ABM) Treaty. But other approaches to TMD would address some of these cost and compliance concerns, so it is worthwhile to look at several alternatives and analyze their costs and effects on capability.

  3. Solid rocket history at TRW Ballistic Missiles Division

    SciTech Connect

    Kennedy, W.S.; Kovacic, S.M.; Rea, E.C. )

    1992-07-01

    The development of ballistic missiles and particularly intercontinental ballistic missiles (ICBMs) by the U.S. space technology manufacturer is examined. Collaboration by the company with the U.S. Air Force is described which began in the 1950s and combined systems engineering and technical assistance. Missile products reviewed in this paper include Atlas, Thor, Titans I and II, Minuteman I, II, III, the Peacekeeper, and the small ICBM. The company developed facilities and programs to support the R and D activities for the missile products, and descriptions are given of the Space Technologies Laboratory and the Ballistic Missiles Division. Contributions to ICBM technologies by the concern include carbon-carbon nozzle materials, propellant formulation data, movable nozzles, casting techniques for large volumes of propellants, and studies of fracture mechanics. 41 refs.

  4. Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks

    NASA Astrophysics Data System (ADS)

    Gouissem, A.; Hamila, R.; Al-Dhahir, N.; Foufou, S.

    2016-12-01

    In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to select multiple relays using the orthogonal matching pursuit algorithm and outperform state-of-the-art techniques in terms of outage probability and computation complexity. To reduce the amount of collected channel state information (CSI), we propose a limited-feedback scheme where only a limited number of relays feedback their CSI. Furthermore, a detailed performance-complexity tradeoff investigation is conducted for the different studied techniques and verified by Monte Carlo simulations.

  5. Systematic Wind-Tunnel Measurements on Missiles

    DTIC Science & Technology

    1947-03-01

    the wind tv ... ~·mel makes hn opt~mum parallel jat desirable, ·1t:hich in tul"n r•3quire3 a. well-defined nozzlG shape for each Hach n-t.il1i.bBl...tpany, DUsseldorf, fired thes0 missiles with vm:’iJUS cen tbr-of-e::ravi ty positions from bar:r•<::ls v11 . th di.ffe1•ent angles of’ twist and

  6. Vehicle Concept for a Robotic Missile Launcher.

    DTIC Science & Technology

    1983-05-01

    Co-rc AH0-3P00 aan Mr alD ern q~LL. BE eor N .30-0 C. F8NA 05OR C~ntact AAH~-33--0W0 T44 BUREAU OF ENGINEERING RESEARCH Members of the...in the development of its graduate program, the College recognized that men and women engaged in research should be as free as possible of the...several vehicular components. Existing missile launchers are to be mounted on highly mobile, unmanned vehicles to be remotely controlled from a manned

  7. Quaternion Utilization in a Missile Model

    DTIC Science & Technology

    1980-03-01

    8217^g^! l "^^’,^^S?ag!gBBH|M^BIB«aIji AFIT/GST/MA/80M-3 (is William jfyThorae f wcmngi Approved for public release; distribution unlimited...Eisenman, Richard L . Matrix Vector Analysis. New York: McGraw-Hill Book Company, Inc., 1963. 5. First Ann Arbor Corporation. Navy ACMR/I Missile...Xq3k . Also for X * -1 (- l )q = -qfl - qxi - q2J - q3k and q + t- l )q! - tq0-q£) + Cq^qfJi + Cq2-q£)j + Cq3-qJ)k . So, quaternions obey the

  8. Options for Deploying Missile Defenses in Europe

    DTIC Science & Technology

    2009-02-01

    phase defense system. CBO 12 OPTIONS FOR DEPLOYING MISSILE DEFENSES IN EUROPE CBOB The AN/ TPY -2—a transportable X-band radar based on the radar of the...THAAD system.22 One AN/ TPY - 2 has been deployed to Shariki, Japan, and MDA plans to use another as the forward-based radar for the proposed European...satellites are slated to be launched in 2009. The size and satellite design for 22. The AN/ TPY -2 was formerly known as the Forward-Based X- Band

  9. Structural adhesives for missile external protection material

    NASA Astrophysics Data System (ADS)

    Banta, F. L.; Garzolini, J. A.

    1981-07-01

    Two basic rubber materials are examined as possible external substrate protection materials (EPM) for missiles. The analysis provided a data base for selection of the optimum adhesives which are compatible with the substrate, loads applied and predicted bondline temperatures. Under the test conditions, EA934/NA was found to be the optimum adhesive to bond VAMAC 2273 and/or NBR/EPDM 9969A to aluminum substrate. The optimum adhesive for composite structures was EA956. Both of these adhesives are two-part epoxy systems with a pot life of approximately two hours. Further research is suggested on field repair criteria, nuclear hardness and survivability effects on bondline, and ageing effects.

  10. The North Korean Ballistic Missile Program

    DTIC Science & Technology

    2008-02-01

    Chŏn Tu- hwan) used the uprising as a pretext to oust President Choi Kyu Ha (Ch’oe Kyu-ha), who had succeeded Park in October 1979 but was a life...components and other sophisticated hardware for guidance systems. According to a North Korea defector (alias “Lee Bok Koo” or “Yi Bok -ku”) who claims to...the Nodong’s inertial guidance system, which is estimated to give the missile a circular error probable (CEP) of 2-4km.77 “Lee Bok Koo,” who defected

  11. MissileLab User’s Guide

    DTIC Science & Technology

    2009-02-01

    AP05, NEAR MISL3, NEAR MISDL, HASC, NASA CART3D Aerodynamic Analysis, Aerodynamic Prediction Codes, Missile DATCOM, NSWC HASC, S/HABP 8...export option for 3-D models in the NASA CART3D “tri” file format and the Standard Tessellation Language (STL) format. This capability allows the user...to quickly generate 3-D models that may be read by NASA’s OVERGRID code, used as input to the NASA CART3D Euler flow solver suite or read into a

  12. Officials of the Army Ballistic Missile Agency

    NASA Technical Reports Server (NTRS)

    1956-01-01

    Hermann Oberth (forefront) with officials of the Army Ballistic Missile Agency at Huntsville, Alabama in 1956. Left to right: Dr. Ernst Stuhlinger (seated); Major General H.N. Toftoy, Commanding Officer and person responsible for 'Project Paperclip,' which took scientists and engineers out of Germany after World War II to design rockets for American military use. Many of the scientists later helped to design the Saturn V rocket that took the Apollo 11 astronauts to the Moon. Dr. Eberhard Rees, Deputy Director, Development Operations Division Wernher von Braun, Director, Development Operations Division.

  13. Tracking and data relay satellite system configuration and tradeoff study. Volume 5: User impact and ground station design, part 1

    NASA Technical Reports Server (NTRS)

    Hill, T. E.

    1972-01-01

    The configuration of the user transponder on the Tracking and Data Relay satellite is described. The subjects discussed are: (1) transponder concepts and trades, (2) ground station design, (3) antenna configurations for ground equipment, (4) telemetry facilities, (5) signal categories, and (6) satellite tracking.

  14. Tracking and data relay satellite system configuration and tradeoff study. Volume 4: Spacecraft and subsystem design, part 1

    NASA Technical Reports Server (NTRS)

    Hill, T. E.

    1972-01-01

    The design and development of the Tracking and Data Relay satellite are discussed. The subjects covered are: (1) spacecraft mechanical and structural design, (2) attitude stabilization and control subsystem, (3) propulsion system, (4) electrical power subsystem, (5) thermal control, and (6) reliability engineering.

  15. The science, technology, and politics of ballistic missile defense

    SciTech Connect

    Coyle, Philip E.

    2014-05-09

    America's missile defense systems are deployed at home and abroad. This includes the Groundbased Missile Defense (GMD) system in Alaska and California, the Phased Adaptive Approach in Europe (EPAA), and regional systems in the Middle East and Asia. Unfortunately these systems lack workable architectures, and many of the required elements either don't work or are missing. Major review and reconsideration is needed of all elements of these systems. GMD performance in tests has gotten worse with time, when it ought to be getting better. A lack of political support is not to blame as the DoD spends about $10 billion per year, and proposes to add about $5 billion over the next five years. Russia objects to the EPAA as a threat to its ICBM forces, and to the extensive deployment of U.S. military forces in countries such as Poland, the Czech Republic and Romania, once part of the Soviet Union. Going forward the U.S. should keep working with Russia whose cooperation will be key to diplomatic gains in the Middle East and elsewhere. Meanwhile, America's missile defenses face an enduring set of issues, especially target discrimination in the face of attacks designed to overwhelm the defenses, stage separation debris, chaff, decoys, and stealth. Dealing with target discrimination while also replacing, upgrading, or adding to the many elements of U.S. missiles defenses presents daunting budget priorities. A new look at the threat is warranted, and whether the U.S. needs to consider every nation that possesses even short-range missiles a threat to America. The proliferation of missiles of all sizes around the world is a growing problem, but expecting U.S. missile defenses to deal with all those missiles everywhere is unrealistic, and U.S. missile defenses, effective or not, are justifying more and more offensive missiles.

  16. The science, technology, and politics of ballistic missile defense

    NASA Astrophysics Data System (ADS)

    Coyle, Philip E.

    2014-05-01

    America's missile defense systems are deployed at home and abroad. This includes the Groundbased Missile Defense (GMD) system in Alaska and California, the Phased Adaptive Approach in Europe (EPAA), and regional systems in the Middle East and Asia. Unfortunately these systems lack workable architectures, and many of the required elements either don't work or are missing. Major review and reconsideration is needed of all elements of these systems. GMD performance in tests has gotten worse with time, when it ought to be getting better. A lack of political support is not to blame as the DoD spends about 10 billion per year, and proposes to add about 5 billion over the next five years. Russia objects to the EPAA as a threat to its ICBM forces, and to the extensive deployment of U.S. military forces in countries such as Poland, the Czech Republic and Romania, once part of the Soviet Union. Going forward the U.S. should keep working with Russia whose cooperation will be key to diplomatic gains in the Middle East and elsewhere. Meanwhile, America's missile defenses face an enduring set of issues, especially target discrimination in the face of attacks designed to overwhelm the defenses, stage separation debris, chaff, decoys, and stealth. Dealing with target discrimination while also replacing, upgrading, or adding to the many elements of U.S. missiles defenses presents daunting budget priorities. A new look at the threat is warranted, and whether the U.S. needs to consider every nation that possesses even short-range missiles a threat to America. The proliferation of missiles of all sizes around the world is a growing problem, but expecting U.S. missile defenses to deal with all those missiles everywhere is unrealistic, and U.S. missile defenses, effective or not, are justifying more and more offensive missiles.

  17. Theater Ballistic Missile Targets Programmatic Environmental Assessment Vandenberg Air Force Base, California

    DTIC Science & Technology

    1997-12-01

    Dipodomys agilis), striped skunk (Mephitis mephitis), desert cottontail (Sylvilagus bachmanii), beaver (Castor canadensis), and feral pig ( Sus scrofa ...Engineering Department, Environmental Assessment for Standard Missile, White Sands Missile Range, New Mexico . PATRIOT Project Office, 1990...Department of the Army, 1988. Addendum Life Cycle Environmental Assessment, Army Tactical Missile System, White Sands Missile Range, New Mexico , 15 March

  18. An economically viable space power relay system

    NASA Astrophysics Data System (ADS)

    Bekey, Ivan; Boudreault, Richard

    1999-09-01

    This paper describes and analyzes the economics of a power relay system that takes advantage of recent technological advances to implement a system that is economically viable. A series of power relay systems are described and analyzed which transport power ranging from 1,250 megawatts to 5,000 megawatts, and distribute it to receiving sites at transcontinental distances. Two classes of systems are discussed—those with a single reflector and delivering all the power to a single rectenna, and a second type which has multiple reflectors and distributes it to 10 rectenna sites, sharing power among them. It is shown that when offering electricity at prices competitive to those prevalent in developed cities in the US that a low IRR is inevitable, and economic feasibility of a business is unlikely. However, when the target market is Japan where the prevalent electricity prices are much greater, that an IRR exceeding 65% is readily attainable. This is extremely attractive to potential investors, making capitalization of a venture likely. The paper shows that the capital investment required for the system can be less than 1 per installed watt, contributing less than 0.02 /KW-hr to the cost of energy provision. Since selling prices in feasible regions range from 0.18 to over 030 $/kW-hr, these costs are but a small fraction of the operating expenses. Thus a very large IRR is possible for such a business.

  19. A Geosynchronous Orbit Optical Communications Relay Architecture

    NASA Technical Reports Server (NTRS)

    Edwards, Bernard L.; Israel, David J.

    2014-01-01

    NASA is planning to fly a Next Generation Tracking and Data Relay Satellite (TDRS) next decade. While the requirements and architecture for that satellite are unknown at this time, NASA is investing in communications technologies that could be deployed on the satellite to provide new communications services. One of those new technologies is optical communications. The Laser Communications Relay Demonstration (LCRD) project, scheduled for launch in December 2017 as a hosted payload on a commercial communications satellite, is a critical pathfinder towards NASA providing optical communications services on the Next Generation TDRS. While it is obvious that a small to medium sized optical communications terminal could be flown on a GEO satellite to provide support to Near Earth missions, it is also possible to deploy a large terminal on the satellite to support Deep Space missions. Onboard data processing and Delay Tolerant Networking (DTN) are two additional technologies that could be used to optimize optical communications link services and enable additional mission and network operations. This paper provides a possible architecture for the optical communications augmentation of a Next Generation TDRS and touches on the critical technology work currently being done at NASA. It will also describe the impact of clouds on such an architecture and possible mitigation techniques.

  20. Effects of 1-Hz repetitive transcranial magnetic stimulation on long-latency reflexes and cortical relay time.

    PubMed

    Tataroglu, Cengiz; Sair, Ahmet; Parlaz, Ahu; Deneri, Ersin

    2011-06-01

    Long-latency reflexes (LLRs) of hand muscles include a transcortical component. Cortical relay time estimated by the subtraction of motor and somatosensory evoked potentials from LLR reflects the physiology of the central neural pathway of LLR. It is believed that 1-Hz repetitive transcranial magnetic stimulation (rTMS) of the primary motor cortex can decrease cortical excitability for approximately 15 minutes at intracortical level. The aim of the study was to analyze LLR and cortical relay time before and after 1-Hz rTMS. Long-latency reflex and H reflex obtained from the thenar muscles by electrical stimulation of the median nerve of 16 healthy subjects. Additionally, motor evoked potentials and somatosensory evoked potentials were also recorded. Cortical relay time was calculated by the subtraction of motor evoked potential and somatosensory evoked potential latencies from LLR. These electrophysiologic recordings were performed before and after 15 minutes of 1-Hz rTMS over the motor area for the thenar muscles in the primary motor cortex. The amplitudes of LLR and motor evoked potential were significantly decreased after rTMS, but the H reflex of the thenar muscle and somatosensory evoked potentials were unchanged. The major finding of our study was a shortened duration of cortical relay time after rTMS. In conclusion, our findings suggest that the LLR of the thenar muscles has a transcortical pathway and cortical relay time that can give some information about the physiology of the intracortical pathway of LLR.

  1. Implementation of a Relay Coordination System for the Mars Network

    NASA Technical Reports Server (NTRS)

    Allard, Daniel A.

    2010-01-01

    Mars network relay operations involve the coordination of lander and orbiter teams through long-term and short-term planning, tactical changes and post-pass analysis. Much of this coordination is managed through email traffic and point-to-point file data exchanges. It is often difficult to construct a complete and accurate picture of the relay situation at any given moment, as there is no centralized store of correlated relay data. The Mars Relay Operations Service (MaROS) is being implemented to address the problem of relay coordination for current and next-generation relay missions. The service is provided for the purpose of coordinating communications sessions between landed spacecraft assets and orbiting spacecraft assets at Mars. The service centralizes a set of functions previously distributed across multiple spacecraft operations teams, and as such greatly improves visibility into the end-to-end strategic coordination process. Most of the process revolves around the scheduling of communications sessions between the spacecraft during periods of time when a landed asset on Mars is geometrically visible by an orbiting spacecraft. These "relay" sessions are used to transfer data both to and from the landed asset via the orbiting asset on behalf of Earth-based spacecraft operators. This paper will discuss the relay coordination problem space, overview the architecture and design selected to meet system requirements, and describe the first phase of system implementation

  2. MaROS Strategic Relay Planning and Coordination Interfaces

    NASA Technical Reports Server (NTRS)

    Allard, Daniel A.

    2010-01-01

    The Mars Relay Operations Service (MaROS) is designed to provide planning and analysis tools in support of ongoing Mars Network relay operations. Strategic relay planning requires coordination between lander and orbiter mission ground data system (GDS) teams to schedule and execute relay communications passes. MaROS centralizes this process, correlating all data relevant to relay coordination to provide a cohesive picture of the relay state. Service users interact with the system through thin-layer command line and web user interface client applications. Users provide and utilize data such as lander view periods of orbiters, Deep Space Network (DSN) antenna tracks, and reports of relay pass performance. Users upload and download relevant relay data via formally defined and documented file structures including some described in Extensible Markup Language (XML). Clients interface with the system via an http-based Representational State Transfer (ReST) pattern using Javascript Object Notation (JSON) formats. This paper will provide a general overview of the service architecture and detail the software interfaces and considerations for interface design.

  3. Understanding the Design, Function and Testing of Relays

    ERIC Educational Resources Information Center

    Adams, Roger E.; Lindbloom, Trent

    2006-01-01

    The increased use of electronics in today's automobiles has complicated the control of circuits and actuators. Manufacturers use relays to control a variety of complex circuits--for example, those involving actuators and other components like the A/C clutch, electronic cooling fans, and blower motors. Relays allow a switch or processor to control…

  4. 49 CFR 236.737 - Cut-section, relayed.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 4 2011-10-01 2011-10-01 false Cut-section, relayed. 236.737 Section 236.737..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.737 Cut-section, relayed. A cut-section where the energy for one track circuit is supplied through front contacts...

  5. 49 CFR 236.737 - Cut-section, relayed.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 4 2012-10-01 2012-10-01 false Cut-section, relayed. 236.737 Section 236.737..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.737 Cut-section, relayed. A cut-section where the energy for one track circuit is supplied through front contacts...

  6. 49 CFR 236.737 - Cut-section, relayed.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Cut-section, relayed. 236.737 Section 236.737..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.737 Cut-section, relayed. A cut-section where the energy for one track circuit is supplied through front contacts...

  7. 49 CFR 236.737 - Cut-section, relayed.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Cut-section, relayed. 236.737 Section 236.737..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.737 Cut-section, relayed. A cut-section where the energy for one track circuit is supplied through front contacts...

  8. 49 CFR 236.737 - Cut-section, relayed.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Cut-section, relayed. 236.737 Section 236.737..., MAINTENANCE, AND REPAIR OF SIGNAL AND TRAIN CONTROL SYSTEMS, DEVICES, AND APPLIANCES Definitions § 236.737 Cut-section, relayed. A cut-section where the energy for one track circuit is supplied through front contacts...

  9. 76 FR 59551 - Internet-Based Telecommunications Relay Service Numbering

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-27

    ... hearing and speech disabilities to communicate using sign language through video equipment, and IP Relay... rules are targeted to address VRS, which allows individuals with hearing and speech disabilities to... specifically address Video Relay Service (VRS), which allows individuals with hearing and speech disabilities...

  10. Implementation of a Relay Coordination System for the Mars Network

    NASA Technical Reports Server (NTRS)

    Allard, Daniel A.

    2010-01-01

    Mars network relay operations involve the coordination of lander and orbiter teams through long-term and short-term planning, tactical changes and post-pass analysis. Much of this coordination is managed through email traffic and point-to-point file data exchanges. It is often difficult to construct a complete and accurate picture of the relay situation at any given moment, as there is no centralized store of correlated relay data. The Mars Relay Operations Service (MaROS) is being implemented to address the problem of relay coordination for current and next-generation relay missions. The service is provided for the purpose of coordinating communications sessions between landed spacecraft assets and orbiting spacecraft assets at Mars. The service centralizes a set of functions previously distributed across multiple spacecraft operations teams, and as such greatly improves visibility into the end-to-end strategic coordination process. Most of the process revolves around the scheduling of communications sessions between the spacecraft during periods of time when a landed asset on Mars is geometrically visible by an orbiting spacecraft. These "relay" sessions are used to transfer data both to and from the landed asset via the orbiting asset on behalf of Earth-based spacecraft operators. This paper will discuss the relay coordination problem space, overview the architecture and design selected to meet system requirements, and describe the first phase of system implementation

  11. ASDAR (aircraft to satellite data relay) flight test report

    NASA Technical Reports Server (NTRS)

    Domino, E. J.; Lovell, R. R.; Conroy, M. J.; Culp, D. H.

    1977-01-01

    The aircraft to Satellite Data Relay (ASDAR), an airborne data collection system that gathers meteorological data from existing aircraft instrumentation and relays it to ground user via a geo-synchronous meteorological satellite, is described and the results of the first test flight on a commercial Boeing 747 aircraft are presented. The flight test was successful and verified system performance in the anticipated environment.

  12. Understanding the Design, Function and Testing of Relays

    ERIC Educational Resources Information Center

    Adams, Roger E.; Lindbloom, Trent

    2006-01-01

    The increased use of electronics in today's automobiles has complicated the control of circuits and actuators. Manufacturers use relays to control a variety of complex circuits--for example, those involving actuators and other components like the A/C clutch, electronic cooling fans, and blower motors. Relays allow a switch or processor to control…

  13. Using the 5 P Relay in Task Groups

    ERIC Educational Resources Information Center

    Stanley, Paula Helen

    2006-01-01

    This article describes the 5 P Relay, a group exercise that can increase the effectiveness of task groups. The 5 P Relay is based on the principles and concepts of the Invitational Model, which emphasizes the importance of assessing the effectiveness or health of five aspects of an organization's environment: people, places, programs, processes,…

  14. 77 FR 42187 - Relay Services for Deaf-Blind Individuals

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-18

    ... COMMISSION 47 CFR Part 64 Relay Services for Deaf-Blind Individuals AGENCY: Federal Communications Commission... Communications and Video Accessibility Act of 2010, Section 105, Relay Services for Deaf-Blind Individuals, Order... the Twenty-first Century Communications and Video Accessibility Act of 2010, Section 105,...

  15. 76 FR 72124 - Internet-Based Telecommunications Relay Service Numbering

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-22

    ... VRS or IP Relay user's request, facilitate the transfer of the toll free number to a toll free... Office of Management and Budget (OMB) has approved, for a period of three years, the information collection associated with the Commission's Internet- Based Telecommunications Relay Service Numbering...

  16. Tactical missile aerodynamics - General topics. Progress in Astronautics and Aeronautics. Vol. 141

    SciTech Connect

    Hemsch, M.J. )

    1992-01-01

    The present volume discusses the development history of tactical missile airframes, aerodynamic considerations for autopilot design, a systematic method for tactical missile design, the character and reduction of missile observability by radar, the visualization of high angle-of-attack flow phenomena, and the behavior of low aspect ratio wings at high angles of attack. Also discussed are airbreathing missile inlets, 'waverider' missile configurations, bodies with noncircular cross-sections and bank-to-turn missiles, asymmetric flow separation and vortex shedding on bodies-of-revolution, unsteady missile flows, swept shock-wave/boundary-layer interactions, pylon carriage and separation of stores, and internal stores carriage and separation.

  17. Limited antiballistic missile system. Master's thesis

    SciTech Connect

    Payne, J.H.

    1990-12-01

    This investigation examines the possibilities of deploying a limited ABM system to counter launches from Third World regions. It is a systems analysis of the entire concept, with the objective of determining if the existing missile warning network could detect launches from Third World regions, and if an ABM component could be integrated into the network. A computer model was used to determine if launches would be detected, and examine the warning time provided. Based on sample data, the warning network appears capable of detecting Third World launches. Warning times provided by the network appears to provide adequate time to communicate the event up through the National Command Authorities, and launch an interceptor. The ABM structure could be integrated into the existing network, using the unified command currently operating it. The entire US could be defended using 12 batteries of interceptors with a range of 350 miles. It appears the most questionable aspect of the system is the interceptor missile. There are several interceptors under development, but none have been fully operationally tested. The ERIS interceptor under development by the Army may have the capabilities to be used in the system. Further research could prove the system to be a valuable asset.

  18. Relay exchanges in elite short track speed skating.

    PubMed

    Hext, Andrew; Heller, Ben; Kelley, John; Goodwill, Simon

    2017-06-01

    In short track speed skating, the relay exchange provides an additional strategic component to races by allowing a team to change the skater involved in the pack race. Typically executed every 1½ laps, it is the belief of skaters and coaches that during this period of the race, time can be gained or lost due to the execution of the relay exchange. As such, the aim of this study was to examine the influence of the relay exchange on a team's progression through a 5000 m relay race. Using data collected from three World Cup relay events during the 2012-2013 season, the time taken to complete the straight for the scenarios with and without the relay exchange were compared at different skating speeds for the corner exit prior to the straight. Overall, the influence of the relay exchange was found to be dependent on this corner exit speed. At slower corner exit speeds (12.01-13.5 m/s), relay exchange straight times were significantly faster than the free skating scenario (P < 0.01). While at faster corner exit speeds (14.01-15 m/s), straight times were significantly slower (P < 0.001). The findings of this study suggest that the current norm of executing relay exchanges every 1½ laps may not be optimal. Instead, varying the frequency of relay exchange execution throughout the race could allow: (1) time to be gained relative to other teams; and (2) facilitate other race strategies by providing an improved opportunity to overtake.

  19. Generalizing performance limitations of relay neurons: application to Parkinson's disease.

    PubMed

    Agarwal, Rahul; Santaniello, Sabato; Sarma, Sridevi V

    2014-01-01

    Relay cells are prevalent throughout sensory systems and receive two types of inputs: driving and modulating. The driving input contains receptive field properties that must be transmitted while the modulating input alters the specifics of transmission. Relay reliability of a relay cell is defined as the fraction of pulses in the driving input that generate action potentials at the neuron's output, and is in general a complicated function of the driving input, the modulating input and the cell's properties. In a recent study, we computed analytic bounds on the reliability of relay neurons for a class of Poisson driving inputs and sinusoidal modulating inputs. Here, we generalize our analysis and compute bounds on the relay reliability for any modulating input. Furthermore, we show that if the modulating input is generated by a colored Gaussian process, closed form expressions for bounds on relay reliability can be derived. We applied our analysis to investigate relay reliability of thalamic cells in health and in Parkinson's disease (PD). It is hypothesized that in health, neurons in the motor thalamus relay information only when needed and this capability is compromised in PD due to exaggerated beta-band oscillations in the modulating input from the basal ganglia (BG). To test this hypothesis, we used modulating and driving inputs simulated from a detailed computational model of the cortico-BG-thalamo-cortical motor loop and computed our theoretical bounds in both PD and healthy conditions. Our bounds match well with our empirically computed reliability and show that the relay reliability is larger in the healthy condition across the population of thalamic neurons. Furthermore, we show that the increase in power in the beta-band of the modulating input (output of BG) is causally related with the decrease in relay reliability in the PD condition.

  20. Missiles caused by severe pressurized-water reactor accidients

    SciTech Connect

    Krieg, R.

    1995-07-01

    For future pressurized-water reactors, which should be designed against core-meltdown accidents, missiles generated inside the containment present a severe problem for its integrity. The masses and geometries of the missiles, as well as their velocities, may vary to a great extent. Therefore a reliable proof of the containment integrity is very difficult. In this article the potential sources of missiles are discussed, and the conclusion was reached that the generation of heavy missiles must be prevented. Steam explosions must not damage the reactor vessel head. Thus fragments of the head cannot become missiles that endanger the containment shell. Furthermore, during a melt-through failure of the reactor vessel under high pressure, the resulting forces must not catapult the whole vessel against the containment shell. Only missiles caused by hydrogen explosions may be tolerable, but shielding structures that protect the containment shell may be required. Further investigations are necessary. Finally, measures are described showing that the generation of heavy missiles can indeed be prevented. Investigations are currently being carried out that will confirm the strength of the reactor vessel head. In addition, a device for retaining the fragments of a failing reactor vessel is discussed.

  1. Time-to-impact estimation in passive missile warning systems

    NASA Astrophysics Data System (ADS)

    Şahıngıl, Mehmet Cihan

    2017-05-01

    A missile warning system can detect the incoming missile threat(s) and automatically cue the other Electronic Attack (EA) systems in the suit, such as Directed Infrared Counter Measure (DIRCM) system and/or Counter Measure Dispensing System (CMDS). Most missile warning systems are currently based on passive sensor technology operating in either Solar Blind Ultraviolet (SBUV) or Midwave Infrared (MWIR) bands on which there is an intensive emission from the exhaust plume of the threatening missile. Although passive missile warning systems have some clear advantages over pulse-Doppler radar (PDR) based active missile warning systems, they show poorer performance in terms of time-to-impact (TTI) estimation which is critical for optimizing the countermeasures and also "passive kill assessment". In this paper, we consider this problem, namely, TTI estimation from passive measurements and present a TTI estimation scheme which can be used in passive missile warning systems. Our problem formulation is based on Extended Kalman Filter (EKF). The algorithm uses the area parameter of the threat plume which is derived from the used image frame.

  2. Innovation in Aerodynamic Design Features of Soviet Missiles

    NASA Technical Reports Server (NTRS)

    Spearman, M. Leroy

    2006-01-01

    Wind tunnel investigations of some tactical and strategic missile systems developed by the former Soviet Union have been included in the basic missile research programs of the NACA/NASA. Studies of the Soviet missiles sometimes revealed innovative design features that resulted in unusual or unexpected aerodynamic characteristics. In some cases these characteristics have been such that the measured performance of the missile exceeds what might have been predicted. In other cases some unusual design features have been found that would alleviate what might otherwise have been a serious aerodynamic problem. In some designs, what has appeared to be a lack of refinement has proven to be a matter of expediency. It is a purpose of this paper to describe some examples of unusual design features of some Soviet missiles and to illustrate the effectiveness of the design features on the aerodynamic behavior of the missile. The paper draws on the experience of the author who for over 60 years was involved in the aerodynamic wind tunnel testing of aircraft and missiles with the NACA/NASA.

  3. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2012-07-06

    to launch satellites. The Air Force has renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It is...currently developing a Minotaur IV missile, which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital...Sciences Corporation. The Minotaur IV missile is now expected to serve as the boost vehicle for the CPGS mission. When it began to consider the use of

  4. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2013-04-26

    launch satellites. The Air Force has renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It is currently...developing a Minotaur IV missile, which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital Sciences...Corporation. The Minotaur IV missile is now expected to serve as the boost vehicle for the CPGS mission. When it began to consider the use of these

  5. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2014-05-05

    and Peacekeeper missiles, referring to them as Minotaur missiles. The Minotaur IV missile would use three stages from the Peacekeeper missile and a...new fourth stage developed by Orbital Sciences Corporation. The Minotaur IV missile could serve as the boost vehicle for a land-based CPGS mission...review of the CTM program. According to Air Force plans, the CSM would combine the Minotaur IV launch vehicle described above with a hypersonic

  6. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2011-04-21

    renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It is currently developing a Minotaur IV missile...which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital Sciences Corporation. The Minotaur IV missile is...According to current plans, the CSM would combine the Minotaur IV launch vehicle described above with a hypersonic payload delivery vehicle (PDV

  7. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2012-02-13

    also to launch satellites. The Air Force has renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It...is currently developing a Minotaur IV missile, which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital...Sciences Corporation. The Minotaur IV missile is now expected to serve as the boost vehicle for the CPGS mission. When it began to consider the use

  8. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2011-03-01

    renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It is currently developing a Minotaur IV missile...which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital Sciences Corporation. The Minotaur IV missile is...According to current plans, the CSM would combine the Minotaur IV launch vehicle described above with a hypersonic payload delivery vehicle (PDV

  9. Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues

    DTIC Science & Technology

    2010-10-25

    to launch satellites. The Air Force has renamed the modified Minuteman and Peacekeeper missiles, referring to them as Minotaur missiles. It is...currently developing a Minotaur IV missile, which would use three stages from the Peacekeeper missile and a new fourth stage developed by Orbital Sciences...Corporation. The Minotaur IV missile is now expected to serve as the boost vehicle for the CPGS mission. When it began to consider the use of these

  10. Experimental study of ELF signatures developed by ballistic missile launch

    SciTech Connect

    Peglow, S.G.; Rynne, T.M.

    1993-04-08

    The Lawrence Livermore National Laboratory (Livermore, CA) and SARA, Inc. participated in the ATMD missile launch activities that occurred at WSMR during January 1993. These tests involved the launch of Lance missiles with a subsequent direction of F-15Es into the launch area for subsequent detection and simulated destruction of redeployed missile launchers, LLNL and SARA deployed SARN`s ELF sensors and various data acquisition systems for monitoring of basic phenomena. On 25 January 1993, a single missile launch allowed initial measurements of the phenomena and an assessment of appropriate sensor sensitivity settings as well as the appropriateness of the sensor deployment sites (e.g., with respect to man-made ELF sources such as power distributions and communication lines). On 27 January 1993, a measurement of a double launch of Lance missiles was performed. This technical report covers the results of the analysis of latter measurements. An attempt was made to measure low frequency electromagnetic signatures that may be produced during a missile launch. Hypothetical signature production mechanisms include: (1) Perturbations of the earth geo-potential during the launch of the missile. This signature may arise from the interaction of the ambient electric field with the conducting body of the missile as well as the partially ionized exhaust plume. (2) Production of spatial, charge sources from triboelectric-like mechanisms. Such effects may occur during the initial interaction of the missile plume with the ground material and lead to an initial {open_quotes}spike{close_quotes} output, Additionally, there may exist charge transfer mechanisms produced during the exhausting of the burnt fuel oxidizer.

  11. Strapdown inertial systems applications for tactical missiles (stand-off missiles)

    NASA Astrophysics Data System (ADS)

    Puech

    1986-06-01

    Strapdown Inertial Systems (SDIS) are particularly well suited for tactical standoff missile applications. This certainty was made clear by several years of theoretical design work and trials. Initial theoretical work made wide use of parameters giving detailed definition of missile trajectories and motions as obtained from measurements made on weapon systems then in development or production. Sensors (principally gyroscopes) were laboratory tested. These preliminary design efforts led to selection of various technologies such as the laser gyro and the mechanical gyro, each being adapted to the weapon system in question. Share-out of functions between various equipment items was defined. Comparison of the advantages and disadvantages of these technologies shows that today the laser gyro is principally retained for high and medium range levels of precision, with the mechanical (spin-stabilized) gyro serving in the medium and low precision range. Since requirements are ever increasing in the fields of dynamic performance and robustness, it is here that most progress is expected.

  12. High performance dash on warning air mobile, missile system. [intercontinental ballistic missiles - systems analysis

    NASA Technical Reports Server (NTRS)

    Levin, A. D.; Castellano, C. R.; Hague, D. S.

    1975-01-01

    An aircraft-missile system which performs a high acceleration takeoff followed by a supersonic dash to a 'safe' distance from the launch site is presented. Topics considered are: (1) technological feasibility to the dash on warning concept; (2) aircraft and boost trajectory requirements; and (3) partial cost estimates for a fleet of aircraft which provide 200 missiles on airborne alert. Various aircraft boost propulsion systems were studied such as an unstaged cryogenic rocket, an unstaged storable liquid, and a solid rocket staged system. Various wing planforms were also studied. Vehicle gross weights are given. The results indicate that the dash on warning concept will meet expected performance criteria, and can be implemented using existing technology, such as all-aluminum aircraft and existing high-bypass-ratio turbofan engines.

  13. TOW Missile Pallet MIL-STD-1660 Tests

    DTIC Science & Technology

    1993-08-01

    0 DTICS ELECTE FEB 2 19941 FINAL REPORT C U ow AUGUST 1993 (V V Lfl3 NNE REPORT NO. 93-23 TOW MISSILE PALLET MIL- STD -1660 TESTS Prepared for...TITLE gOnakde Secwir Casaftedon) TOW Missile Pallet MIL- STD -1660 Tests 12. PERSONAL AUTHOR(S) Jason B. Solberg 13s. TYPE OF REPORT 13b. TIME COVERED...and Engineering Center (ARDEC) to test the TOW missile pallet. This report contains the procedures, results, and recommendations from the MIL- STD

  14. North Korean Ballistic Missile Threat to the United States

    DTIC Science & Technology

    2009-02-24

    intelligence reports postulated that the Taepo Dong 1 SLV was only a two-stage rocket. The first stage fell into international waters 300 km east...4,000 km from the launch point.11 Some analysts believe that if the missile had functioned properly, the Taepo Dong 1 space launch vehicle ( SLV ) could...opposed to the SLV ) is believed to be a two- stage missile that uses a No Dong missile derivative as its first stage and SCUD C derivative (called the

  15. 1. Northeast face of missile site control building, commonly known ...

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

    1. Northeast face of missile site control building, commonly known as the missile site radar building, showing open blast door #BD2. This emergency escape, at stair no. 12, is NEMP/RFI-shielded and 16" thick. The large circle in the center is the radar face, also known as the antennae array aperture. The small circle to the right of the radar face is the "Q" channel. The antennae atop the turret provided lightning protection for the building - Stanley R. Mickelsen Safeguard Complex, Missile Site Control Building, Northeast of Tactical Road; southeast of Tactical Road South, Nekoma, Cavalier County, ND

  16. Missile tracking and range safety: Tracking Interferometer Pathfinder System (TIPS)

    NASA Astrophysics Data System (ADS)

    Dowgiallo, David J.; Rauen, Stephen; Peters, Wendy M.; Polisensky, Emil J.

    2013-05-01

    The tracking of missiles at close range proximity has been an ongoing challenge for many launch environments. The ability to provide accurate missile trajectory information is imperative for range safety and early termination of flight. In an effort to provide a potential solution to tracking issues that have plagued many traditional techniques, the Tracking Interferometer Pathfinder System (TIPS) was developed at the Naval Research Laboratory, Washington, D.C. The paper herein describes the design, field test, and results of an interferometer deployed for missile tracking.

  17. Five Pioneers with Scale Models of Their Missiles

    NASA Technical Reports Server (NTRS)

    1950-01-01

    Five pioneers pose with scale models of their missiles they created in the 1950s. From left to right: Dr. Ernst Stuhlinger, a member of the original German rocket team who directed the Research Projects Office, Army Ballistic Missile Agency (ABMA); Major General Holger Toftoy, who consolidated U.S. missile and rocketry development; Professor Herman Oberth, a rocket pioneer and Dr. von Braun's mentor; Dr. Wernher von Braun, Director, Development Operation Division, ABMA; and Dr. Robert Lusser, who served as assistant director for Reliability Engineering for ABMA. This photographis was taken February 1, 1956 by Hank Walker and appeared in February 27, 1956 issue of Life magazine.

  18. Missile Aerodynamics for Ascent and Re-entry

    NASA Technical Reports Server (NTRS)

    Watts, Gaines L.; McCarter, James W.

    2012-01-01

    Aerodynamic force and moment equations are developed for 6-DOF missile simulations of both the ascent phase of flight and a tumbling re-entry. The missile coordinate frame (M frame) and a frame parallel to the M frame were used for formulating the aerodynamic equations. The missile configuration chosen as an example is a cylinder with fixed fins and a nose cone. The equations include both the static aerodynamic coefficients and the aerodynamic damping derivatives. The inclusion of aerodynamic damping is essential for simulating a tumbling re-entry. Appended information provides insight into aerodynamic damping.

  19. Missile antenna pattern coordinate system and data formats

    NASA Astrophysics Data System (ADS)

    1993-08-01

    Antenna performance data pertains to missile, space, and aerodynamic vehicles' transmitting or receiving antennas used with range data collection, missile trajectory measurements, impact predictions, communications, or flight termination systems. As used in this document, the terms missile space vehicle, airborne, and aerodynamic vehicle are synonymous. This standard is intended to cover antennas for telemetry, pulsed radar beacons, continuous wave (CW) transponders, communication transmitters and receivers, command control/flight termination, receivers/decoders, pseudo random noise (PRN) ranging systems, and the Global Positioning System.

  20. Feasibility Study On Missile Launch Detection And Trajectory Tracking

    DTIC Science & Technology

    2016-09-01

    will create a problem for the missile trajectory-tracking phase of the program, as it will not be able to differentiate the missile from the smoke...can be expressed as lp  f R L  1 k L (1) In Equation (1), R is the (unknown) range to the missile launch site and f is the (unknown) focal...the elevation angle α (see Figure 17). In this case, Equation (3) becomes v  kdp cos [m/s] (4) where   tan1 H R     . While the

  1. Five Pioneers with Scale Models of Their Missiles

    NASA Technical Reports Server (NTRS)

    1950-01-01

    Five pioneers pose with scale models of their missiles they created in the 1950s. From left to right: Dr. Ernst Stuhlinger, a member of the original German rocket team who directed the Research Projects Office, Army Ballistic Missile Agency (ABMA); Major General Holger Toftoy, who consolidated U.S. missile and rocketry development; Professor Herman Oberth, a rocket pioneer and Dr. von Braun's mentor; Dr. Wernher von Braun, Director, Development Operation Division, ABMA; and Dr. Robert Lusser, who served as assistant director for Reliability Engineering for ABMA. This photographis was taken February 1, 1956 by Hank Walker and appeared in February 27, 1956 issue of Life magazine.

  2. Technologies for Future Precision Strike Missile Systems - Missile/Aircraft Integration

    DTIC Science & Technology

    2001-07-01

    simulation activities include safe separation analysis . Similar to the propulsion area, the warhead has insensitive munition tests prior to firing a...factors of safety. Fittings also require an additional factor of safety of about 1.15 because of the uncertainty in the analysis for attachment integrity...Technology in improved analysis and development tools will provide reductions in missile weight and cost by reducing the design uncertainty and the

  3. Admittance relay helps wash out system instability

    SciTech Connect

    Sweezy, G.; Swift, G.; Zhang, Z.

    1996-01-01

    This article describes how delta-current admittance relays detect severe power system disturbances and initiate a power reduction signal on the dc transmission system to help stabilize the integrated ac/HVDC transmission system. It is always desirable to transmit as much power as possible over major transmission line interconnections, and the 500 kV line linking Manitoba in Canada to Minnesota in the US is a good example. A static var system (SVS) is part of this strategy. Note the southern end of an HVDC line through which the power is delivered from northern hydro-electric generation. The ability to quickly control dc-delivered power combined with the complication of SVS switching and the installation of series capacitors has led to special circumstances requiring an unusual approach to maintenance of system stability. The availability of a new protection-oriented computing platform has made the required algorithms feasible.

  4. Cult of deterrence: A moral and strategic critique of the anti-ballistic missile treaty. Master`s thesis

    SciTech Connect

    Pringle, C.S.

    1997-12-30

    Ballistic missile defense is the morally and strategically superior alternative to the current system of deterrence, provided that it is responsibly implemented. Analysis of the Just War Criteria and the utilitarian justifications of deterrence present a moral obligation to pursue the alternative strategy of missile defense as a means of defending the United States. However, the Anti-Ballistic Missile (ABM) Treaty does not allow earnest pursuit of this alternative, despite recent efforts to exploit its loopholes and broaden its meaning beyond any reasonable limit. Moreover, deterrence can no longer provide the guarantee of security that it did during the Cold War. Offense-Defense Theory shows that revisionist states are not subject to the same calculations of effective deterrence that the Soviet Union was during that period. This strategic analysis underlies the moral evaluations and further supports missile defense. The cult of deterrence is presented as an explanation for the failure to adapt national security policy to the new international structure, as European powers failed to perceive the offense-defense balance prior to World War I. The ABM regime threatens to reproduce those same mistakes with even greater consequences.

  5. Multisensor target and missile tracking for a point defense missile system

    NASA Astrophysics Data System (ADS)

    Hall, Stephen L.

    2003-08-01

    The strengths and weaknesses of centimetre, (I Band), millimetric (Ka band) and EO systems (daylight TV, Thermal Imager Sensors) are discussed, as applied to both the problems of acquiring and tracking naval threats, in order to achieve optimum engagements with Command to Line of Sight (CLOS) weapons. The limitations of the centimetre, millimetre and EO bands with varying target heights, seastates and visibility conditions are identified, including multipath geometry, filtering to counter multipath and utilisation of EO sensors in the Naval environment worldwide. Mechanisms of combining both Radar and EO Sensors to produce an accurate differential tracking output (target to missile), in order to control a CLOS missile are described, together with filter configurations allowing a true differential output to be produced, de-coupled from sensor sightline motion. This includes the application of sensor merging, Kalman filtering and Command Off the Line of Sight (COLOS) techniques. Finally there is a description of both an in-service and projected fire control system controlling a Point Defence Missile System (PDMS), including the results from a practical demonstration of multi-sensor tracking of an air target in a sea going environment.

  6. 2014 Assessment of the Ballistic Missile Defense System (BMDS)

    DTIC Science & Technology

    2015-03-23

    temperature shock, humidity, rain, ice, snow, sand, dust, and wind , and found deficiencies in all areas except for wind ...tracking, classifying, identifying, and discriminating targets; battalion and battery battle management elements; Communications Relay Groups and...incorrect and inconsistent reporting were observed during testing. Some critical faults were not relayed through the system at all. Analyses of

  7. Flowfield Effects of Launch on a Vertically-Launched Missile

    DTIC Science & Technology

    1989-06-01

    3 4520 THYME = TIMER 4530 CALL OUTPUT(RELAY.ACT.01,STEPPER) 4540 CHKTIME = TIMER 4550 IF CHKTIME < ( THYME + DELAY1) GOTO 4540 4560 CALL OPEN.CHANHEL...4630 CALL OUTPUT(RELAY.ACT.01,STEPPER) 4640 CHKTIME = TIMER � IF CHKTIME < ( THYME + DELAY2) GOTO 4640 4660 REM EACH PORT SAMPLE 10 TIMES 4670 FOR II1

  8. Satellite data-relay activities in Arizona

    USGS Publications Warehouse

    Boner, F.C.; Blee, J.W.; Shope, W.G.

    1985-01-01

    The U.S. Geological Survey (USGS) Arizona District collects data from automated streamflow stations for a wide variety of uses. Data from these stations are provided to Federal, State, and local agencies that have a responsibility to issue flood warnings; to generate forecasts of water availability; to monitor flow to insure compliance with treaties and other legal mandates; and to manage reservoirs for hydropower, flood abatement, and municipal and irrigation water supply. In the mid-1970's, the escalation of data collection costs and a need for more timely data led the Arizona District to examine alternatives for remote data acquisition. On the basis of successful data communications experiments with NASA 's Landsat satellite, an operational system for satellite-data relay was developed in 1976 using the National Oceanic and Atmospheric Administrations 's (NOAA) Geostationary Operational Environmental Satellite (GOES). A total of 62 data collection platforms (DCP's) was operated in 1983. Satellite telemetry operations are controlled at the remote data-collection stations by small battery-operated data collection platforms. The DCP 's periodically collect data from the sensors, store the data in computer memory, and at preset times transmit the data to the GOES satellite. The satellite retransmits the data to Earth where a ground-receive station transmits or transfers the data by land communications to the USGS computer in Reston, Virginia, for processing. The satellite relay transfers the data from sensor to computer in minutes; therefore, the data are available to users on a near real-time basis. (Author 's abstract)

  9. Relay Support for the Mars Science Laboratory Mission

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D. Jr,; Bell, David J.; Gladden, Roy E.; Ilott, Peter A.; Jedrey, Thomas C.; Johnston, M. Daniel; Maxwell, Jennifer L.; Mendoza, Ricardo; McSmith, Gaylon W.; Potts, Christopher L.; hide

    2013-01-01

    The Mars Science Laboratory (MSL) mission landed the Curiosity Rover on the surface of Mars on August 6, 2012, beginning a one-Martian-year primary science mission. An international network of Mars relay orbiters, including NASA's 2001 Mars Odyssey Orbiter (ODY) and Mars Reconnaissance Orbiter (MRO), and ESA's Mars Express Orbiter (MEX), were positioned to provide critical event coverage of MSL's Entry, Descent, and Landing (EDL). The EDL communication plan took advantage of unique and complementary capabilities of each orbiter to provide robust information capture during this critical event while also providing low-latency information during the landing. Once on the surface, ODY and MRO have provided effectively all of Curiosity's data return from the Martian surface. The link from Curiosity to MRO incorporates a number of new features enabled by the Electra and Electra-Lite software-defined radios on MRO and Curiosity, respectively. Specifically, the Curiosity-MRO link has for the first time on Mars relay links utilized frequency-agile operations, data rates up to 2.048 Mb/s, suppressed carrier modulation, and a new Adaptive Data Rate algorithm in which the return link data rate is optimally varied throughout the relay pass based on the actual observed link channel characteristics. In addition to the baseline surface relay support by ODY and MRO, the MEX relay service has been verified in several successful surface relay passes, and MEX now stands ready to provide backup relay support should NASA's orbiters become unavailable for some period of time.

  10. Relay Support for the Mars Science Laboratory Mission

    NASA Technical Reports Server (NTRS)

    Edwards, Charles D. Jr,; Bell, David J.; Gladden, Roy E.; Ilott, Peter A.; Jedrey, Thomas C.; Johnston, M. Daniel; Maxwell, Jennifer L.; Mendoza, Ricardo; McSmith, Gaylon W.; Potts, Christopher L.; Schratz, Brian C.; Shihabi, Mazen M.; Srinivasan, Jeffrey M.; Varghese, Phillip; Sanders, Stephen S.; Denis, Michel

    2013-01-01

    The Mars Science Laboratory (MSL) mission landed the Curiosity Rover on the surface of Mars on August 6, 2012, beginning a one-Martian-year primary science mission. An international network of Mars relay orbiters, including NASA's 2001 Mars Odyssey Orbiter (ODY) and Mars Reconnaissance Orbiter (MRO), and ESA's Mars Express Orbiter (MEX), were positioned to provide critical event coverage of MSL's Entry, Descent, and Landing (EDL). The EDL communication plan took advantage of unique and complementary capabilities of each orbiter to provide robust information capture during this critical event while also providing low-latency information during the landing. Once on the surface, ODY and MRO have provided effectively all of Curiosity's data return from the Martian surface. The link from Curiosity to MRO incorporates a number of new features enabled by the Electra and Electra-Lite software-defined radios on MRO and Curiosity, respectively. Specifically, the Curiosity-MRO link has for the first time on Mars relay links utilized frequency-agile operations, data rates up to 2.048 Mb/s, suppressed carrier modulation, and a new Adaptive Data Rate algorithm in which the return link data rate is optimally varied throughout the relay pass based on the actual observed link channel characteristics. In addition to the baseline surface relay support by ODY and MRO, the MEX relay service has been verified in several successful surface relay passes, and MEX now stands ready to provide backup relay support should NASA's orbiters become unavailable for some period of time.

  11. Wireless Information Surveillance via Proactive Eavesdropping with Spoofing Relay

    NASA Astrophysics Data System (ADS)

    Zeng, Yong; Zhang, Rui

    2016-12-01

    Wireless information surveillance, by which suspicious wireless communications are closely monitored by legitimate agencies, is an integral part of national security. To enhance the information surveillance capability, we propose in this paper a new proactive eavesdropping approach via a spoofing relay, where the legitimate monitor operates in a full-duplex manner with simultaneous eavesdropping and spoofing relaying to vary the source transmission rate in favor of the eavesdropping performance. To this end, a power splitting receiver is proposed, where the signal received at each antenna of the legitimate monitor is split into two parts for information eavesdropping and spoofing relaying, respectively. We formulate an optimization problem to maximize the achievable eavesdropping rate by jointly optimizing the power splitting ratios and relay beamforming matrix at the multi-antenna monitor. Depending on the suspicious and eavesdropping channel conditions, the optimal solution corresponds to three possible spoofing relay strategies, namely \\emph{constructive relaying}, \\emph{jamming}, and \\emph{simultaneous jamming and destructive relaying}. Numerical results show that the proposed technique significantly improves the eavesdropping rate of the legitimate monitor as compared to the existing passive eavesdropping and jamming-based eavesdropping schemes.

  12. The Soviet Union and ballistic missile defense

    SciTech Connect

    Parrott, B.

    1987-01-01

    In recent debate over strategic defense, the Soviet dimension has not been adequately examined. Based on an analysis of Soviet statements and Soviet weaponry, the study surveys Soviet perceptions of the shifting relationship between the superpowers and the effect of BMD on that relationship. The author then traces the evolution of Soviet policies toward ballistic missile defense and the introduction of weapons into space. After exploring the internal budgetary debates that will affect future Soviet decisions on BMD and space systems, the book outlines Soviet responses, political as well as military, to the Strategic Defense Initiative and concludes with recommendations for U.S. policy toward BMD and arms negotiations. Contents: The Central Issues; Soviet Views of the Geopolitical Context; Soviet Policy Toward Soviet BMD and the Military Uses of Space; The resource Allocation Debate and Soviet BMD Decisions; Soviet Responses to the Strategic Defense Initiative; U.S. Policy and the Future of the Superpower Arms Competition.

  13. New space careers for former military missiles

    NASA Astrophysics Data System (ADS)

    Powell, Joel W.; Caldwell, Lee

    1990-04-01

    The decision by the USAF to reduce its reliance on the Space Shuttle by procuring a fleet of complementary expendable launch vehicles (ELVs) is reviewed. Fifty-four new Titan IV, Delta II, and Atlas II ELVs were ordered, which will carry the majority of the DOD's future payloads. In addition, 14 retired Titan II ICBMs have been selected for space use after serving on strategic alert for nearly 25 years in underground silos. Beginning in October 1982 the LGM-25C Titan II weapon system was deactivated over a 5-year period as part of the strategic forces modernization program. There were 56 missiles available for conversion as space launch vehicles. Information is presented on Titan II storage and refurbishment. The Titan 23G space launch vehicle and its proposed scheduled launches are also reviewed.

  14. Optical Kalman filtering for missile guidance

    NASA Technical Reports Server (NTRS)

    Casasent, D.; Neuman, C. P.; Lycas, J.

    1984-01-01

    Optical systolic array processors constitute a powerful and general-purpose set of optical architectures with high computational rates. In this paper, Kalman filtering, a novel application for these architectures, is investigated. All required operations are detailed; their realization by optical and special-purpose analog electronics are specified; and the processing time of the system is quantified. The specific Kalman filter application chosen is for an air-to-air missile guidance controller. The architecture realized in this paper meets the design goal of a fully adaptive Kalman filter which processes a measurement every 1 msec. The vital issue of flow and pipelining of data and operations in a systolic array processor is addressed. The approach is sufficiently general and can be realized on an optical or digital systolic array processor.

  15. Electrical and chemical synapses between relay neurons in developing thalamus.

    PubMed

    Lee, Seung-Chan; Cruikshank, Scott J; Connors, Barry W

    2010-07-01

    Gap junction-mediated electrical synapses interconnect diverse types of neurons in the mammalian brain, and they may play important roles in the synchronization and development of neural circuits. Thalamic relay neurons are the major source of input to neocortex. Electrical synapses have not been directly observed between relay neurons in either developing or adult animals. We tested for electrical synapses by recording from pairs of relay neurons in acute slices of developing ventrobasal nucleus (VBN) of the thalamus from rats and mice. Electrical synapses were common between VBN relay neurons during the first postnatal week, and then declined sharply during the second week. Electrical coupling was reduced among cells of connexin36 (Cx36) knockout mice; however, some neuron pairs remained coupled. This implies that electrical synapses between the majority of coupled VBN neurons require Cx36 but that other gap junction proteins also contribute. The anatomical distribution of a beta-galactosidase reporter indicated that Cx36 was expressed in some VBN neurons during the first postnatal week and sharply declined over the second week, consistent with our physiological results. VBN relay neurons also communicated via chemical synapses. Rare pairs of relay neurons excited one another monosynaptically. Much more commonly, spikes in one relay neuron evoked disynaptic inhibition (via the thalamic reticular nucleus) in the same or a neighbouring relay neuron. Disynaptic inhibition between VBN cells emerged as electrical coupling was decreasing, during the second postnatal week. Our results demonstrate that thalamic relay neurons communicate primarily via electrical synapses during early postnatal development, and then lose their electrical coupling as a chemical synapse-mediated inhibitory circuit matures.

  16. The impact of missile warfare on self-reported sleep quality. Part 1.

    PubMed

    Askenasy, J J; Lewin, I

    1996-01-01

    During the 1991 Gulf War, we investigated the effect of missile attacks through two telephone surveys of a large sample of an urban population that evaluated self-reported sleep quality, stress, fear, depressed mood, fatigue and power of concentration. We surveyed 1,045 people during the Gulf War itself, and we interviewed them again (excluding the chronic insomniacs) 30 days after the war. During the war, 51% of the subjects claimed to be suffering from disturbed sleep. Whereas 13% of the survey population had been chronic insomniacs before the war, 38% developed insomnia during the war. The war provoked reported stress (67.5% of subjects), depressed mood (50.9%), difficulties in concentration (39.7%) and increased fatigue (25%). Four weeks after it ended, 19% of the previously normal subjects were still suffering from insomnia; 5% of the cases of insomnia were developed postbellum. Stress, depressed mood and impaired concentration were found to correlate significantly with subjectively evaluated insomnia. We concluded that modern missile warfare may induce long-lasting insomnia in one-third of the population under threat. A small percentage may develop insomnia postbellum. The risk of developing long-lasting insomnia is higher in those who reported experiencing prolonged stress and depressed moods.

  17. 8. PHOTOCOPY, HEATING DRAWING FOR ADMINISTRATION BUILDING. NIKE Missile ...

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

    8. PHOTOCOPY, HEATING DRAWING FOR ADMINISTRATION BUILDING. - NIKE Missile Base SL-40, Administration Building, East central portion of base, southeast of Mess Hall, northeast of HIPAR Equipment Building, Hecker, Monroe County, IL

  18. Development and qualification of the US Cruise Missile Propulsion System

    NASA Astrophysics Data System (ADS)

    Reardon, William H.; Cifone, Anthony J.

    1992-09-01

    This paper provides a description of the very successful Cruise Missile gas turbine propulsion program managed by the United States Department of Defense. The paper contains a summary of the procurement process, the technical and programmatic milestones, issues and challenges, and lessons learned. In the past fifteen years, testing at the Naval Air Propulsion Center has included over 800 cruise engine development and component substantiation efforts spanning the engine specification qualification requirements. This paper provides a detailed account of environmental test techniques used to qualify the F107 family of gas turbine engines which propel the U.S. Cruise Missile. In addition, a missile freestream flight test simulation for the TOMAHAWK Cruise Missile is discussed along with current and future program efforts.

  19. 34. SOUTHWEST CORNER OF BUILDING 233 (MISSILE ASSEMBLY SHOP) IN ...

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

    34. SOUTHWEST CORNER OF BUILDING 233 (MISSILE ASSEMBLY SHOP) IN ASSEMBLY AREA. - Loring Air Force Base, Weapons Storage Area, Northeastern corner of base at northern end of Maine Road, Limestone, Aroostook County, ME

  20. Vortex development on slender missiles at supersonic speeds

    NASA Technical Reports Server (NTRS)

    Allen, J. M.; Dillenius, M. F. E.

    1979-01-01

    A theoretical and experimental effort has been made to develop a vortex-prediction capability on circular and noncircular missiles at supersonic speeds. Predicted vortex patterns are computed by two linear-theory computer codes. One calculates the strengths and initial locations of the vortices, and the other calculates their trajectories. A short color motion picture has been produced from the calculations to illustrate the predicted vortex patterns on a typical missile. Experimental vapor-screen photographs are presented to show the longitudinal development of the vortices on a fin-control missile. Comparisons are made between these data and the predicted vortices to assess the accuracy of the theory. The theory appears to be fairly accurate in predicting the number, locations, and relative strengths of individual vortices which develop over the missile, but cannot predict vortex sheets or diffuse vorticity whenever they occur.

  1. The development of Soviet rocket engines (For strategic missiles)

    SciTech Connect

    Bolonkin, A.

    1991-01-01

    A first-hand account of developments in the Soviet rocket industry is presented. The organization and leadership of the rocket and missile industry are traced from its beginning in the 1920s. The development of the Glushko Experimental Design Bureau, where the majority of Soviet rocket engines were created, is related. The evolution of Soviet rocket engines is traced in regard to both their technical improvement and their application in missiles and space vehicles. Improved Glushko engines and specialized Isaev and Kosberg engines are discussed. The difficulties faced by the Soviet missile and space program, such as the pre-Sputnik failures, the oscillation problem of 1965/1966, which exposed a weakness in Soviet ICBM missiles, and the Nedelin disaster of 1960, which cost the lives of more than 200 scientists and engineers, as well as the Commander-in-Chief of the Strategic Rocket Forces, Marshall Nedelin, are examined. 122 refs.

  2. A study on UV missile plume emission model

    NASA Astrophysics Data System (ADS)

    Lou, Ying; Bai, Ting-zhu

    2006-01-01

    With the development of UV missile warning systems, there is a need to assess or predict the UV signature for missile. This paper shows an emission model for UV missile plume signature. The model computes the missile plume flow field distribution, takes into account CO-O chemiluminescence and hot particles emission in the plume, and analyses the influences of the alumina particles scattering. Plume flow field is computed by the RNG k-ɛ turbulence model with non-equilibrium wall functions. Alumina particles optical properties are calculated by using Mie theory and the particles are assumed a log-normal size distribution. Radiative transfer equation is solved by the discrete-ordinates method. The model is applied to a user-defined test case and compared with other UV plume emission signature models based on different algorithms, the result of comparison is coincident and satisfied.

  3. 5. TETHERED MINUTEMAN MISSILE LAUNCH, TEST AREA 1100. Original is ...

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

    5. TETHERED MINUTEMAN MISSILE LAUNCH, TEST AREA 1-100. Original is a color print. - Edwards Air Force Base, Air Force Rocket Propulsion Laboratory, Leuhman Ridge near Highways 58 & 395, Boron, Kern County, CA

  4. Piping and equipment resistance to seismic-generated missiles

    SciTech Connect

    LaSalle, F.R.; Golbeg, P.R.; Chenault, D.M.

    1992-02-01

    For reactor and nuclear facilities, both Title 10, Code of Federal Regulations, Part 50, and US Department of Energy Order 6430.1A require assessments of the interaction of non-Safety Class 1 piping and equipment with Safety Class 1 piping and equipment during a seismic event to maintain the safety function. The safety class systems of nuclear reactors or nuclear facilities are designed to the applicable American Society of Mechanical Engineers standards and Seismic Category 1 criteria that require rigorous analysis, construction, and quality assurance. Because non-safety class systems are generally designed to lesser standards and seismic criteria, they may become missiles during a safe shutdown earthquake. The resistance of piping, tubing, and equipment to seismically generated missiles is addressed in the paper. Gross plastic and local penetration failures are considered with applicable test verification. Missile types and seismic zones of influence are discussed. Field qualification data are also developed for missile evaluation.

  5. Status of the intercontinental ballistic missile modernization program

    NASA Astrophysics Data System (ADS)

    1985-07-01

    The Department of Defense is taking three major actions to modernize the intercontinental ballistic missile component of the U.S. strategic forces. Specifically, DOD is: (1) developing a small ICBM and its hard mobile launcher, (2) researching other basing technology, and (3) deploying Peacekeeper (MX) missiles in Minuteman silos. Potential major issues of the small ICBM can now be identified. For instance, for a 500 missile force on hard mobile launchers: (1) life cycle cost would be about $44 billion in 1982 dollars, (2) personnel requirements would be about 20,000 people, and (3) up to 28,000 square miles of land would be required for wartime operations. The Peacekeeper program is in production while development testing continues. Results to date have been positive. Current congressional action to limit the number of missiles deployed will affect program cost and schedule.

  6. Engineering Features Clear Air Force Station, Ballistic Missile Early ...

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

    Engineering Features - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

  7. Missile Warning Operations Center (MWOC) Beale Air Force Base, ...

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

    Missile Warning Operations Center (MWOC) - Beale Air Force Base, Perimeter Acquisition Vehicle Entry Phased-Array Warning System, Techinical Equipment Building, End of Spencer Paul Road, north of Warren Shingle Road (14th Street), Marysville, Yuba County, CA

  8. Lessons Learned from Coordinating Relay Activities at Mars

    NASA Technical Reports Server (NTRS)

    Gladden, Roy E.; Hwang, Pauline; Waggoner, Bruce; McLaughlin, Bruce; Fieseler, Paul; Thomas, Reid; Bigwood, Maria; Herrera, Paul

    2005-01-01

    The Mission Management Office at the Jet Propulsion Laboratory was tasked with coordinating the relay of data between multiple spacecraft at Mars in support of the Mars Exploration Rover Missions in early 2004. The confluence of three orbiters (Mars Global Surveyor, Mars Odyssey, and Mars Express), two rovers (Spirit and Opportunity), and one lander (Beagle 2) has provided a challenging operational scenario that required careful coordination between missions to provide the necessary support and to avoid potential interference during simultaneous relay sessions. As these coordination efforts progressed, several important lessons were learned that should be applied to future Mars relay activities.

  9. Lessons Learned from Coordinating Relay Activities at Mars

    NASA Technical Reports Server (NTRS)

    Gladden, Roy E.; Hwang, Pauline; Waggoner, Bruce; McLaughlin, Bruce; Fieseler, Paul; Thomas, Reid; Bigwood, Maria; Herrera, Paul

    2005-01-01

    The Mission Management Office at the Jet Propulsion Laboratory was tasked with coordinating the relay of data between multiple spacecraft at Mars in support of the Mars Exploration Rover Missions in early 2004. The confluence of three orbiters (Mars Global Surveyor, Mars Odyssey, and Mars Express), two rovers (Spirit and Opportunity), and one lander (Beagle 2) has provided a challenging operational scenario that required careful coordination between missions to provide the necessary support and to avoid potential interference during simultaneous relay sessions. As these coordination efforts progressed, several important lessons were learned that should be applied to future Mars relay activities.

  10. A monolithically integrated torsional CMOS-MEMS relay

    NASA Astrophysics Data System (ADS)

    Riverola, M.; Sobreviela, G.; Torres, F.; Uranga, A.; Barniol, N.

    2016-11-01

    We report experimental demonstrations of a torsional microelectromechanical (MEM) relay fabricated using the CMOS-MEMS approach (or intra-CMOS) which exploits the full foundry inherent characteristics enabling drastic reduction of the fabrication costs and batch production. In particular, the relay is monolithically integrated in the back end of line of a commercial standard CMOS technology (AMS 0.35 μm) and released by means of a simple one-step mask-less wet etching. The fabricated torsional relay exhibits an extremely steep switching behaviour symmetrical about both contact sides with an on-state contact resistance in the k Ω -range throughout the on-off cycling test.

  11. Aerodynamics of powered missile separation from F/A-18 aircraft

    NASA Technical Reports Server (NTRS)

    Ahmad, J. U.; Shanks, S. P.; Buning, P. G.

    1993-01-01

    A 3D dynamic 'chimera' algorithm that solves the thin-layer Navier-Stokes equations over multiple moving bodies was modified to numerically simulate the aerodynamics, missile dynamics, and missile plume interactions of a missile separating from a generic wing and from an F/A-18 aircraft in transonic flow. The missile is mounted below the wing for missile separation from the wing and on the F/A-18 fuselage at the engine inlet side for missile separation from aircraft. Static and powered missile separation cases are considered to examine the influence of the missile and plume on the wing and F/A-18 fuselage and engine inlet. The aircraft and missile are at two degrees angle of attack, Reynolds number of 10 million, freestream Mach number of 1.05 and plume Mach number of 3.0. The computational results show the details of the flow field.

  12. Missile Defense Acquisition: Failure Is Not An Option

    DTIC Science & Technology

    2016-01-26

    missile over Japan into the sea.1With the nation already possessing weapons of mass destruction (WMD), the test launch signaled their intention to...Korea stunned the world in 1998 with the launch of a Taepo Dong-1 ballistic missile over Japan into the sea.4With the nation already possessing nuclear...acquisition agility. MDA’s BMDS acquisition strategy must be timely, flexible, and agile or risk irrelevance. BMDS Layered Architecture Since the NMD

  13. Phoenix Missile Hypersonic Testbed (PMHT): System Concept Overview

    NASA Technical Reports Server (NTRS)

    Jones, Thomas P.

    2007-01-01

    A viewgraph presentation of the Phoenix Missile Hypersonic Testbed (PMHT) is shown. The contents include: 1) Need and Goals; 2) Phoenix Missile Hypersonic Testbed; 3) PMHT Concept; 4) Development Objectives; 5) Possible Research Payloads; 6) Possible Research Program Participants; 7) PMHT Configuration; 8) AIM-54 Internal Hardware Schematic; 9) PMHT Configuration; 10) New Guidance and Armament Section Profiles; 11) Nomenclature; 12) PMHT Stack; 13) Systems Concept; 14) PMHT Preflight Activities; 15) Notional Ground Path; and 16) Sample Theoretical Trajectories.

  14. Missile Datcom User’s Manual - 2008 Revision

    DTIC Science & Technology

    2008-08-01

    AFRL-RB-WP-TR-2009-3015 MISSILE DATCOM User’s Manual - 2008 Revision Lamar Auman , Joshua Doyle, Christopher Rosema, and Mark Underwood...5c. PROGRAM ELEMENT NUMBER 62201F 6. AUTHOR(S) Lamar Auman , Joshua Doyle, Christopher Rosema, and Mark Underwood (U.S. Army Aviation & Missile...M. Simon William D. Washington John E. Williams CONTRIBUTORS TO 8/08 VERSION: AFRL: William B. Blake AMRDEC: Lamar M. Auman Mark L

  15. 101. View of transmitter building no. 102, missile warning operation ...

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

    101. View of transmitter building no. 102, missile warning operation center, close up view of DRED (detection radar environmental display) console in operation showing target. Official photograph BMEWS Project by Hansen, 14 March 1963, clear as negative no. A-8803. - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

  16. Missile Defense Capability: Can We Effectively Counter the Threat?

    DTIC Science & Technology

    2012-03-16

    ballistic missiles will remain a concern for the foreseeable future. It is estimated that Iran currently has SCUD-B and C, as well as Shahab - 3 ...YOUR FORM TO THE ABOVE ADDRESS. 1. REPORT DATE (DD-MM-YYYY) 16-03-2012 2. REPORT TYPE Strategy Research Project 3 . DATES COVERED (From - To...extremists and nuclear proliferation to an increasing number of states.” 3 In this paper the author will discuss the missile defense capability of

  17. Design of Nonlinear Autopilots for High Angle of Attack Missiles

    DTIC Science & Technology

    1996-01-01

    Copyright 1996 by Optimal Synthesis . All Rights Reserved. 1 Design of Nonlinear Autopilots for High Angle of Attack Missiles By P. K. Menon* and...M. Yousefpor† Optimal Synthesis Palo Alto, CA 94306, USA Abstract Two nonlinear autopilot design approaches for a tail-controlled high angle of...Prescribed by ANSI Std Z39-18 © Copyright 1996 by Optimal Synthesis . All Rights Reserved. 2 better agility from tactical missiles. In air-to-air

  18. Missile Defense: Actions Needed to Improve Transparency and Accountability

    DTIC Science & Technology

    2011-03-01

    Improve Transparency and Accountability March 2011 GAO-11-372 Report Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting...AND SUBTITLE Missile Defense: Actions Needed to Improve Transparency and Accountability 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT... Transparency and Accountability Why GAO Did This Study Since 2002, Congress has directed GAO to assess the Missile Defense Agency’s (MDA) annual fiscal

  19. Transforming The Munitions And Missile Maintenance Officer Career Field

    DTIC Science & Technology

    2016-04-01

    maintenance portions were merged with aircraft maintenance officers and the EOD portion was merged with Civil Engineering (CE).29 However, this was...1 AIR STAFF AND COMMAND COLLEGE AIR UNIVERSITY TRANSFORMING THE MUNITIONS AND MISSILE MAINTENANCE OFFICER CAREER FIELD By Joseph O...ABSTRACT The current construct of Air Force Specialty Code 21M, Munitions and Missile Maintenance Officer was a direct result of both the unauthorized

  20. Theater Ballistic Missile Defenses: An Emergency Role for the Navy?

    DTIC Science & Technology

    1992-12-01

    bomber aircraft, missiles do not place crew members at risk of being killed or captured. The speeds at which ballistic missiles travel imparts...chemical or biological warheads. Chemical warheads are becoming easier to acquire and can kill as many people as dozens or even hundreds of...buildings out to 350 feet and kill or injure personnel out to more than 650 feet. 3 2 It is intuitively obvious from this that the larger the warhead