Computer Science – Performance
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..387..479j&link_type=abstract
Space technology and applications international forum (STAIF - 97). AIP Conference Proceedings, Volume 387, pp. 479-484 (1997).
Computer Science
Performance
Thermionic Conversion, Energy Storage Systems, Including Capacitor Banks, Performance Characteristics Of Energy Conversion Systems, Figure Of Merit
Scientific paper
Eight alkali metal thermionic power converters were produced for a ground-based design verification test of a bimodal power and propulsion system. The effort provided a significant development step toward a spaceflight demonstration of the Integrated Solar Upper Stage (ISUS). The converters are electrically connected in series to produce a nominal eight (8) volt, 250 Watt output. In the power mode of the bimodal system, solar energy is concentrated to heat the converters to their operating range of 1900 °K to 2200 °K. The converter design, including thermal diode, heatpipe-radiator physical dimensions and weight are discussed, as are fabrication and prototype development. Test results are presented for individual converters and the 8-converter array, including current voltage characteristics, power density and power-to-weight ratio. Tests of series arrays of 16 and 32 converters are planned as part of this development.
James Edmund L.
Ramsey William D.
Talbot Gregory J.
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