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  • 1
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    Thermionic reactors for space nuclear power (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Thermionic reactor designs for a variety of space power applications spanning the range from 5 kWe to 3 MWe are described. In all of these reactors, nuclear heat is converted directly to electrical energy in thermionic fuel elements (TFEs). A circulating reactor coolant carries heat from the core of TFEs directly to a heat rejection radiator system. The recent design of a thermionic reactor to meet the SP-100 requirements is emphasized. Design studies of reactors at other power levels show that the same TFE can be used over a broad range in power, and that design modifications can extend the range to many megawatts. The design of the SP-100 TFE is similar to that of TFEs operated successfully in test reactors, but with design improvements to extend the operating lifetime to seven years.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    User interface and operational issues with thermionic space power systems (1987)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Thermionic space power systems have unique features which facilitate predeployment operations, provide operational flexibility and simplify the interface with the user. These were studied in some detail during the SP-100 program from 1983 to 1985. Three examples are reviewed in this paper: (1) system readiness verification in the prelaunch phase; (2) startup, shutdown, and dormancy in the operations phase; (3) part-load operation in the operations phase.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Space nuclear power systems 1986; Jan 13, 1986; Albuquerque, MN; United States
    Format: text
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    NASA TECHNICAL REPORTS
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