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RTGs - The powering of Ulysses (1990)

Mastal, E. F. ; Campbell, R. W.

In: Other Sources

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Publication Date: 2011-08-19

Description: The radio-isotope thermoelectric generator (RTG) for Ulysses' electronic supply is described noting that lack of sufficient sunlight renders usual solar cell power generation ineffective due to increased distance from sun. The history of the RTG in the U.S.A. is reviewed citing the first RTG launch in 1961 with an electrical output of 2.7 W and the improved Ulysses RTG, which provides 285 W at mission beginning and 250 W at mission end. The RTG concept is discussed including the most recent RTG technology developed by the DOE, the General Purpose Heat Source RTG (GPHS-RTG). The system relies upon heat generated by radioactive decay using radioactive plutonium-238, which is converted directly to energy using the Seebeck method.

Keywords: SPACECRAFT PROPULSION AND POWER

Type: ESA Bulletin (ISSN 0376-4265); 63, A

Format: text

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