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Nuclear reactor power for a space-based radar. SP-100 projectA space-based radar mission and spacecraft, using a 300 kWe nuclear reactor power system, has been examined, with emphasis on aspects affecting the power system. The radar antenna is a horizontal planar array, 32 X 64 m. The orbit is at 61 deg, 1088 km. The mass of the antenna with support structure is 42,000 kg; of the nuclear reactor power system, 8,300 kg; of the whole spacecraft about 51,000 kg, necessitating multiple launches and orbital assembly. The assembly orbit is at 57 deg, 400 km, high enough to provide the orbital lifetime needed for orbital assembly. The selected scenario uses six Shuttle launches to bring the spacecraft and a Centaur G upper-stage vehicle to assembly orbit. After assembly, the Centaur places the spacecraft in operational orbit, where it is deployed on radio command, the power system started, and the spacecraft becomes operational. Electric propulsion is an alternative and allows deployment in assembly orbit, but introduces a question of nuclear safety.
Document ID
19870016405
Document Type
Technical Memorandum (TM)
Authors
Bloomfield, Harvey (NASA Lewis Research Center Cleveland, OH, United States)
Heller, Jack (NASA Lewis Research Center Cleveland, OH, United States)
Jaffe, Leonard (NASA Lewis Research Center Cleveland, OH, United States)
Beatty, Richard (NASA Lewis Research Center Cleveland, OH, United States)
Bhandari, Pradeep (NASA Lewis Research Center Cleveland, OH, United States)
Chow, Edwin (NASA Lewis Research Center Cleveland, OH, United States)
Deininger, William (NASA Lewis Research Center Cleveland, OH, United States)
Ewell, Richard (NASA Lewis Research Center Cleveland, OH, United States)
Fujita, Toshio (NASA Lewis Research Center Cleveland, OH, United States)
Grossman, Merlin (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 5, 2013
Publication Date
August 31, 1986
Subject Category
NUCLEAR AND HIGH-ENERGY PHYSICS
Report/Patent Number
NAS 1.15:89295
JPL-PUB-86-47
NASA-TM-89295
Funding Number(s)
CONTRACT_GRANT: NAS7-918
CONTRACT_GRANT: DE-AI03-86SF-16013
PROJECT: RTOP 506-00-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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