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Record Details

Record 22 of 13465
Tethered nuclear power for the space station
Author and Affiliation:
Bents, D. J.(NASA Lewis Research Center, Cleveland, OH, United States)
Abstract: A nuclear space power system the SP-100 is being developed for future missions where large amounts of electrical power will be required. Although it is primarily intended for unmanned spacecraft, it can be adapted to a manned space platform by tethering it above the station through an electrical transmission line which isolates the reactor far away from the inhabited platform and conveys its power back to where it is needed. The transmission line, used in conjunction with an instrument rate shield, attenuates reactor radiation in the vicinity of the space station to less than one-one hundredth of the natural background which is already there. This combination of shielding and distance attenuation is less than one-tenth the mass of boom-mounted or onboard man-rated shields that are required when the reactor is mounted nearby. This paper describes how connection is made to the platform (configuration, operational requirements) and introduces a new element the coaxial transmission tube which enables efficient transmission of electrical power through long tethers in space. Design methodology for transmission tubes and tube arrays is discussed. An example conceptual design is presented that shows SP-100 at three power levels 100 kWe, 300 kWe, and 1000 kWe connected to space station via a 2 km HVDC transmission line/tether. Power system performance, mass, and radiation hazard are estimated with impacts on space station architecture and operation.
Publication Date: Jan 01, 1985
Document ID:
19860040070
(Acquired Nov 28, 1995)
Accession Number: 86A24808
Subject Category: SPACECRAFT PROPULSION AND POWER
Document Type: Conference Paper
Publication Information: (SEE A86-24776)
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 18p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: MISSION PLANNING; NUCLEAR ELECTRIC PROPULSION; SPACE STATION POWER SUPPLIES; SPACE STATIONS; SPACECRAFT POWER SUPPLIES; ARCHITECTURE (COMPUTERS); RADIATION HAZARDS; SPACE PLATFORMS; TETHERLINES
Imprint And Other Notes: IN: Intersociety Energy Conversion Engineering Conference, 20th, Miami Beach, FL, August 18-23, 1985, Proceedings. Volume 1 (A86-24776 10-44). Warrendale, PA, Society of Automotive Engineers, Inc., 1985, p. 1.210-1.227. Previously announced in STAR as N85-26912.
Availability Source: Other Sources
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