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  • 1970-1974  (3)
  • 1965-1969
  • 1955-1959
  • 1972  (3)
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  • 1970-1974  (3)
  • 1965-1969
  • 1955-1959
Year
  • 1
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    Unknown
    Advanced spacecraft fuel cell systems. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The specific goals of the system selected for development are 10,000 hours of operation with refurbishment, 20 lb/kW at a sustained power of 7 kW, and 21 kW peaking capability for durations of two hours. The system is designed to operate on low pressure, propulsion grade hydrogen and oxygen. Product water is removed by a passive water removal method that employs a porous hydrophobic membrane as a part of the water transport plate. Aspects of system component testing are discussed together with advanced materials to be used. It was found that the initial performance of a cell with a gold catalyzed cathode is superior to a cell with platinum catalyst. The problem of a certain inability to maintain the desired gas-electrolyte-catalyst interface is the main source of difficulty with the gold-based catalysts.
    Keywords: AUXILIARY SYSTEMS
    Type: U.S. Army, Power Sources Symposium; May 23, 1972 - May 25, 1972; Atlantic City, NJ
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    Advanced spacecraft fuel cell systems (1972)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The development and characteristics of advanced spacecraft fuel cell systems are discussed. The system is designed to operate on low pressure, propulsion grade hydrogen and oxygen. The specific goals are 10,000 hours of operation with refurbishment, 20 pounds per kilowatt at a sustained power of 7 KW, and 21 KW peaking capability for durations of two hours. The system rejects waste heat to the spacecraft cooling system at power levels up to 7 KW. At higher powers, the system automatically transfers to open cycle operation with overboard steam venting.
    Keywords: AUXILIARY SYSTEMS
    Type: NASA-TM-X-68033 , E-6853 , Power Sources Symp.; May 23, 1972 - May 25, 1972; Atlantic City
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Advanced spacecraft fuel cell systems. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: An evolutionary advanced technology program is described which is aimed at meeting the requirements of the next generation of fuel cell systems as well as providing technology fallout to ongoing mission oriented programs. The specific goals of the system selected for development are for 10,000 hr of operation with refurbishment, 20 lb/kW at a sustained power of 7 kW, and 21 kW peaking capability for durations of two hours. The system is designed to operate on low pressure propulsion grade hydrogen and oxygen.
    Keywords: AUXILIARY SYSTEMS
    Type: Power Sources Symposium; May 23, 1972 - May 25, 1972; Atlantic City, NJ
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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