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  • ENERGY PRODUCTION AND CONVERSION  (3,221)
  • 2020-2024
  • 1985-1989  (841)
  • 1975-1979  (2,380)
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Year
  • 1
    Publication Date: 2019-08-28
    Description: On November 25, 1985, the NASA Chief Engineer established a NASA-wide policy to maintain and to require the use of the NASA standard for aerospace nickel-cadmium cells and batteries. The Associate Administrator for Safety, Reliability, Maintainability, and Quality Assurance stated on December 29, 1986, the intent to retain the NASA standard cell usage policy established by the Office of the Chief Engineer. The current NASA policy is also to incorporate technological advances as they are tested and proven for spaceflight applications. This policy will be implemented by modifying the existing standard cells or by developing new NASA standards and their specifications in accordance with the NASA's Aerospace Battery Systems Program Plan. This NASA Specification for Manufacturing and Performance Requirements of NASA Standard Aerospace Nickel-Cadmium Cells is prepared to provide requirements for the NASA standard nickel-cadmium cell. It is an interim specification pending resolution of the separator material availability. This specification has evolved from over 15 years of nickel-cadmium cell experience by NASA. Consequently, considerable experience has been collected and cell performance has been well characterized from many years of ground testing and from in-flight operations in both geosynchronous (GEO) and low earth orbit (LEO) applications. NASA has developed and successfully used two standard flight qualified cell designs.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NHB-8073.1 , NAS 1.18:8073.1
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  • 2
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    In:  Other Sources
    Publication Date: 2019-08-28
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA's Role in Terrest. Energy R&T; 8 p
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  • 3
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    Publication Date: 2019-08-28
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA's Role in Terrest. Energy R&T; 10 p
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  • 4
    Publication Date: 2019-08-28
    Description: A preliminary assessment of a potential Satellite Power System (SPS) is provided. The assessment includes discussion of technical and economic feasibility; the effects of microwave power transmission beams on biological, ecological, and electromagnetic systems; the impact of SPS construction, deployment, and operations on the biosphere and on society; and the merits of SPS compared to other future energy alternatives.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-81142 , DOE/ER-0041
    Format: application/pdf
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  • 5
    Publication Date: 2019-08-28
    Description: Some applications and properties of free-space power transmission are examined. Among the properties discussed are: no mass, either in the form of wire conductors or ferrying vehicles, is needed between the source of energy and the point of consumption; energy can be transferred at the velocity of light; no loss of energy in transferring energy throught the vacuum of space; and the energy transfer is insensitive to a difference in the gravitational potential of the transmitter and receiver locations. Applications discussed include the Solar Power Satellite, high altitude platforms for communications and remote sensing. Also discussed are rectennas and retrodirective arrays. Finally, an expression yielding minimum cost is presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Astronautics and Aeronautics; 17; Sept
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  • 6
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    Publication Date: 2019-08-28
    Description: The space solar power concept is concerned with the use of a Space Power Satellite (SPS) which orbits the earth at geostationary altitude. Two large symmetrical solar collectors convert solar energy directly to electricity using photovoltaic cells woven into blankets. The dc electricity is directed to microwave generators incorporated in a transmitting antenna located between the solar collectors. The antenna directs the microwave beam to a receiving antenna on earth where the microwave energy is efficiently converted back to dc electricity. The SPS design promises 30-year and beyond lifetimes. The SPS is relatively pollution free as it promises earth-equivalence of 80-85% efficient ground-based thermal power plant.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Canadian Communications and Power Conference; Oct 18, 1978 - Oct 20, 1978; Montreal; Canada
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  • 7
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    Publication Date: 2019-08-28
    Description: The objective and planning of the NASA space power research and technology program are reviewed. The areas of research covered include photovoltaic energy conversion, chemical energy conversion and storage, thermal to electric conversion, environmental interactions and power systems management of distribution.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: ESA Photovoltaic Generators in Space; p 107-111
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  • 8
    Publication Date: 2019-08-28
    Description: The Satellite Power System (SPS) Reference System is discussed and the technical and operational information required in support of environmental, socioeconomic, and comparative assessment studies are emphasized. The reference System concept features a gallium-aluminum-arsenide, and silicon solar cell options. Other aspects of an SPS are the construction of bases in space, launch and mission control bases on earth, and fleets of various transportation vehicles to support the construction and maintenance operations of the satellites.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: DOE/ER-0023
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  • 9
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    In:  CASI
    Publication Date: 2019-08-28
    Description: This bibliography lists 1873 reports, articles, and other documents introduced into the NASA scientific and technical information system from January 1, 1979 through March 31, 1979.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-SP-7043(21)
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  • 10
    Publication Date: 2019-08-28
    Description: The objectives were to develop the flat-plate photovoltaic (PV) array technologies required for large-scale terrestrial use late in the 1980s and in the 1990s; advance crystalline silicon PV technologies; develop the technologies required to convert thin-film PV research results into viable module and array technology; and to stimulate transfer of knowledge of advanced PV materials, solar cells, modules, and arrays to the PV community. Progress reached on attaining these goals, along with future recommendations are discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TM-89653 , NAS 1.15:89653
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