Computer Science – Performance
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..246..516w&link_type=abstract
Proceedings of the ninth symposium on space nuclear power systems. AIP Conference Proceedings, Volume 246, pp. 516-531 (1992).
Computer Science
Performance
Lunar, Planetary, And Deep-Space Probes, Asteroids, Meteoroids, Saturn
Scientific paper
Mission, spacecraft, and power subsystem design considerations for the Comet Rendezvous Asteroid Flyby (CRAF)/Cassini (Saturn Orbiter) Project encompass scientific/performance and environmental/safety considerations. Based on the previous experience with the Galileo and Voyager spacecraft, a CRAF/Cassini baseline design has been proposed that seeks to optimize mission performance and reliability while achieving a level of environmental safety commensurate with previous RTG-powered missions. Concurrently, in support of NASA's satisfaction of National Environmental Policy Act (NEPA) requirements, alternative designs capable of mitigating any significant environmental impacts associated with the baseline design are being identified. A comparison of the baseline and alternative designs will be reported in a publicly available Environmental Impact Statement (EIS) scheduled for release in draft form this Spring. The baseline design supporting these impact determinations and alternative comparisons currently rely, for CRAF, on a Venus-Venus-Earth gravity assist trajectory to the comet Tempel 2 and, for Cassini, on a Venus-Earth-Jupiter gravity assist trajectory to Saturn. The spacecraft involved in this baseline make use of a common cylindrical core design comprised of virtually identical subsystems and of a host of certain mission-specific instruments. Due to the low solar intensity at the rendezvous distances associated with both missions and the past success associated with RTG use on deep space missions, three Radioisotope Thermoelectric Generators (RTGs) have been selected as the baseline power source.
Abraham Dougals S.
Bankston Perry C.
Dawson Sandra M.
Klein John W.
Knocke Philip C.
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