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  • 1
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    Dynamic Calibration of Pressure Transducers (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Sinusoidal calibration signal produced in 4- to 100-Hz range. Portable oscillating-pressure device measures dynamic characteristics of pressure transducers installed in models or aircraft at frequency and oscillating-pressure ranges encountered during unsteady-pressure-measurement tests. Calibration is over range of frequencies and amplitudes not available with commercial acoustic calibration devices.
    Keywords: MECHANICS
    Type: LAR-13094 , NASA Tech Briefs (ISSN 0145-319X); 8; 4; P. 517
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Autocorrelation of an exponentially decayed seismic trace (1985)
    In:  Geophysics, Naples, AGU, vol. 50, no. 1, pp. 719-720, pp. 1273, (ISSN: 1340-4202)
    Details
    Publication Date: 1985
    Keywords: Inversion
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Report on SMRM C/P main electronics box component and materials degradation evaluations (1985)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The history of the Main Electronics Box (MEB), a description of the the assembly, and handling conditions following the Solar Maximum Repair Mission are contained.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Proceedings of the SMRM Degradation Study Workshop; p 33-40
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Air Force satellite position management (1985)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The Space Act of 1958 identified the Department of Defense as responsible for conducting military operations in space. Subsequently, the United States Air Force was assigned to act as the DOD's executive agent for space. In addition, the Air Force is responsible for acquisition and launch of DOD space systems. Within the Air Force, space related roles and activities have been delegated to several subordinate organizations and agencies. The roles and responsibilities of agencies are still evolving. The Air Force has designated the Air Force System Command's Space Division as its office of primary responsibility for satellite position management. Spacecraft program offices at Space Division are required by regulation to include position management planning in both prelaunch and orbital phases of spacecraft development and operation.
    Keywords: LAUNCH VEHICLES AND SPACE VEHICLES
    Type: NASA. Lyndon B. Johnson Space Center Orbital Debris; p 399-401
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Space debris protection for a reusable orbital transfer vehicle (1985)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The protection of a reusable transfer vehicle from space debris is discussed. The results of a debris protection analysis are given. It was concluded that a shielding thickness of 0.62mm (24 mils) equivalent aluminum was needed when using a good double wall design. An additional 0.43 mm (18 mils) of shielding was needed during on-orbit storage time between flights.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA. Lyndon B. Johnson Space Center Orbital Debris; p 279-286
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Gamma ray observatory productivity showcase (1985)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The Gamma Ray Observatory (GRO) Program has been proclaimed to be the showcase productivity program for NASA and TRW. Among the multiple disciplines of a large-scale program, there is opportunity and need for improved efficiency, effectiveness, and reduction in the cost of doing business. The efforts and tools that will or have been implemented to achieve this end are described. Since the GRO Program is mainly an engineering program with the build of one satellite, the primary emphasis is placed on improving the efficiency and quality of management and engineering.
    Keywords: ADMINISTRATION AND MANAGEMENT
    Type: NASA. Johnson (Lyndon B.) Space Center R and D Productivity: New Challenges for the US Space Program; p 132-141
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Development and flight test of a helicopter, X-band, portable precision landing system concept (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: A beacon landing system (BLS) is being developed and flight tested as a part of NASA's Rotorcraft All-Weather Operations Research Program. The system is based on state-of-the-art X-band radar technology and digital processing techniques. The BLS airborne hardware consists of an X-band receiver and a small microprocessor, installed in conjunction with the aircraft instrument landing system (ILS) receiver. The microprocessor analyzes the X-band, BLS pulses and outputs ILS-compatible localizer and glide slope signals. Range information is obtained using an on-board weather/mapping radar in conjunction with the BLS. The ground station is an inexpensive, portable unit; it weighs less than 70 lb and can be quickly deployed at a landing site. Results from the flight-test program show that the BLS has a significant potential for providing rotorcraft with low-cost, precision instrument approach capability in remote areas.
    Keywords: AIRCRAFT COMMUNICATIONS AND NAVIGATION
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    NASA TECHNICAL REPORTS
  • 8
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    Accelerated stress testing of amorphous silicon solar cells (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: A technique for performing accelerated stress tests of large-area thin a-Si solar cells is presented. A computer-controlled short-interval test system employing low-cost ac-powered ELH illumination and a simulated a-Si reference cell (seven individually bandpass-filtered zero-biased crystalline PIN photodiodes) calibrated to the response of an a-Si control cell is described and illustrated with flow diagrams, drawings, and graphs. Preliminary results indicate that while most tests of a program developed for c-Si cells are applicable to a-Si cells, spurious degradation may appear in a-Si cells tested at temperatures above 130 C.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Structural concepts for future space transportation system orbiters (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Keywords: SPACE TRANSPORTATION
    Type: Journal of Spacecraft and Rockets (ISSN 0022-4650); 22; 333-339
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Variability of cloudiness at airline cruise altitudes from GASP measurements (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Additional statistics relating to the climatology of cloud cover at airline cruise altitudes are presented. The data were obtained between 1975 and 1979 from commercial airliners participating in the Global Atmospheric Sampling Program (GASP). The statistics describe the seasonal, latitudinal and altitudinal variation in cloudiness parameters as well as differences in the high-altitude cloud structure attributed to cyclone and convective-cloud generation processes. The latitudinal distribution of cloud cover derived form the GASP data was found to agree with high-altitude satellite observations. The relationships between three different measures of cloudiness and the relative vorticity at high altitudes is also discussed.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Climate and Applied Meteorology (ISSN 0733-3021); 24; 74-82
    Format: text
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    NASA TECHNICAL REPORTS
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