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  • Other Sources  (1,015)
  • SPACECRAFT DESIGN, TESTING AND PERFORMANCE  (1,015)
  • 1980-1984  (1,015)
  • 1
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    Systems engineering challenges of the Space Shuttle (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Problems encountered during the Space Shuttle's development that were due to the unique configuration of the vehicle are discussed. While conventional rocket space vehicles have been symmetric, greatly simplifying the analysis and integration of constituent elements, the Space Shuttle's combination of a winged orbiter with side-mounted solid rocket boosters and a large propellant tank presented a more complex system for the analysis and testing of ascent flight control, propulsion system, aerothermodynamics and structural dynamics. Attention is given first and second stage flight operations, return-to-launch-site, abort-once-around and abort-to-orbit mission modes, propulsion system and propulsion test development, and the aerothermodynamics of the external propellant tank and Orbiter.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: IAF PAPER 81-4 , International Astronautical Congress; Sept. 6-12, 1981; Rome; Italy
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Thermal protection in space technology (1982)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The provision of heat protection for various elements of space flight apparata has great significance, particularly in the construction of manned transport vessels and orbital stations. A popular explanation of the methods of heat protection in rocket-space technology at the current stage as well as in perspective is provided.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-TM-77145 , NAS 1.15:77145
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Satellite Power Systems /SPS/ - Overview of system studies and critical technology (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: Systems studies and critical technology issues for the development and evaluation of Satellite Power Systems (SPS) for the photovoltaic generation of electrical energy and its transmission to earth are reviewed. Initial concept studies completed in 1976 and system definition studies initiated in the same year have indicated the technical feasibility of SPS and identified challenging issues to be addressed as part of the SPS Concept Development and Evaluation Program. Systems considered in the study include photovoltaic and solar thermal power conversion configurations employing klystron or solid state microwave generators or lasers for power transmission, and power transmission options, system constructability and in-orbit and ground operations. Technology investigations are being performed in the areas of microwave power transmission, structure/controls interactions and the behavior of key materials in the space/SPS environment. Favorable results have been obtained in the areas of microwave phase distribution and phase control, dc-RF conversion, antenna radiating element, and no insurmountable problems have been discovered in any of the investigations to date.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: AAS PAPER 80-084 , Goddard Memorial Symposium; March 27, 28, 1980; Washington, D. C.
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Without a table of ranks: Presenting the creators of Radio-1 and Radio-2 (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The design and operation of ham radio operator satellites is discussed. Major emphasis is placed on the personalities involved in the project.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Without Tables of Ranks and the Iskra Student Design Bureau (NASA-TM-76277); p 1-23
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Active control technology development at NASA (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: It is noted that the large space systems deployable by means of the Space Shuttle will have increased flexibility, and therefore unprecedented interaction between control and other subsystems. Open loop performance in such systems would be grossly inadequate, prompting active control method development to achieve the required performance levels. The structures in question encompass those of projected science and communications platforms, interplanetary space transportation systems, and manned permanent space stations.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Deployable optical systems; january 18, 19, 1983; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    COSPAS/SARSAT: An overview (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The SARSAT/COSPAS satellite network uses 121.5 and 406 MHz buoys to locate ships and aircraft in distress. The 121.5 MHz system, obligatory on many aircraft, gives localization to within 10 km, and, despite being subject to considerable radio interference and a poor signal to noise ratio, is responsible for saving nearly 200 lives. The 406 MHz location error is 2 km in 75% of cases, and less than or equal to 2 hr for 95% of cases in the worst conditions. It suffers however from interference from illegal broadcasts in the frequency band.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: CNES Satellite Aided Search and Rescue. Exptl. Results and Operational Prospects; p 33-37
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    The COSPAS/SARSAT demonstration and evaluation. Results of the first year in the United States (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The COSPAS/SARSAT location accuracy, coverage, location probability, 406 MHz message transmission, and image rejection were tested using a commercially available beacon (EPIRB) with modulated, coherent, 121.5 and 243.0 MHz distress signals emitted at a minimum of 75 mW, a 406 MHz EPIRB with electronics designed to meet the international specification for experimental beacons, and a beacon with the same electronics as the other 406 MHz EPIRB, incorporating a floating antenna design. The COSPAS/SARSAT system contributed to 15 out of 33 rescue missions, in which 35 of the 85 lives were rescued. In 10% of the cases the COSPAS/SARSAT system provided the only means of notification, and in 18% it was the first means. Tests show that 121.5 MHz accuracy is adequate, but 406 MHz must improve. The 121.5 MHz location probability is 82%, but ambiguity resolution is inferior to 406 MHz. Performance of both 406 MHz beacons at low elevation angles and in high wave heights is good.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: CNES Satellite Aided Search and Rescue. Exptl. Results and Operational Prospects; p 469-485
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Space stations: Living in zero gravity, developmental task for psychologists and space environmental experts (1984)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The recent advances in the psychological aspects of space station design are discussed, including the impact of the increase in awareness of both the public in general as well as space environmental experts of the importance of psychological factors when designing space stations and training astronauts.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-TM-77620 , NAS 1.15:77620
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Interactions between satellites and plasma (1984)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The interactions of a spacecraft with the surrounding, streaming plasma were determined by the following effects: the fade out of the plasma in the wake of the probe, the emission of photoelectrons and secondary electrons, the differential charging of the surface of the probe, and a spatial potential distribution in the vicinity of the space probe. These effects and their importance are discussed and following plasma conditions are considered: (1) geostationary satellite orbits; (2) in the solar wind (HELIOS mission); and (3) in the ionosphere at an altitude of 250 km (the projected OSV on Spacelab). The fundamental models are reviewed.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-TM-77476 , NAS 1.15:77476
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Space station (1984)
    In:  CASI
    Details
    Publication Date: 2019-08-28
    Description: The need for a space station, its cost, its use, and completion are examined. The Space Station Task Force was established by NASA Administrators to answer questions and to provide focus and direction for Space Station planning activities. The task force provides Congress and the Administration with sufficient information to make decisions on whether the United States should proceed with a Space Station as the next major national initiative in space. Current thinking on selected issues, planning guidelines, unique considerations and organization are presented.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA. Lewis Research Center Space Photovoltaic Res. and Technol. 1983; p 237-250
    Format: text
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    NASA TECHNICAL REPORTS
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