High efficiency dynamic radioisotope power systems for space exploration-a status report

Author

Hunt, M.E.

Author_Institution

Rockwell Int. Corp., Canoga Park, CA, USA

Volume

8

Issue

12

fYear

1993

Firstpage

18

Lastpage

23

Abstract

Background on the space exploration program is discussed, and the currently identified NASA exploration missions are contrasted with the missions that were being planned a year ago. Developments in high-efficiency dynamic radioisotope power systems are discussed: and Brayton and Stirling power conversion cycles are compared for the missions planned for the next decade. Issues related to the use of high-efficiency radioisotope (HER) power systems are identified. It is noted that HER power systems are approximately three times as efficient as current radioisotope thermoelectric generators(RTGs) and are therefore significantly cheaper. Additionally, the world´s supply of /sup 238/Pu is extremely limited. Currently discussed missions would cut deeply into this supply if powered by RTGs.<>

Keywords

nuclear power; space vehicle power plants; thermoelectric conversion; thermoelectric devices; /sup 238/Pu; Brayton power conversion cycle; NASA exploration missions; Pu; Stirling power conversion cycles; dynamic isotope power system; high-efficiency dynamic radioisotope power systems; radioisotope thermoelectric generators; space exploration; Isotopes; Mars; Moon; NASA; Planetary orbits; Power system dynamics; Power systems; Radioactive materials; Space exploration; US Department of Energy;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems Magazine, IEEE

Publisher

ieee

ISSN

0885-8985

Type

jour

DOI

10.1109/62.246037

Filename

246037