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Attitude control requirements for an earth-orbital solar electric propulsion stageSolar Electric Propulsion Stage (SEPS) application in earth orbit requires considerably more maneuvering for thrust vector steering and solar array pointing than planetary missions. Attitude maneuver requirements for geosynchronous and low earth-orbital missions are presented. Situations which result in optimum steering torque requirements exceeding the capability of current SEPS configurations are defined. Sub-optimal steering techniques are defined which reduce the geosynchronous mission torque requirements to acceptable levels with negligible performance penalties. Some low earth-orbital flight regimes with earth shadowing are found to result in much larger torque requirements and impose significant mechanization penalties if serious performance losses are to be avoided. Alternative attitude control mechanization techniques are defined for these cases.
Document ID
19750040887
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Oglevie, R. E.
Andrews, P. D.
Jasper, T. P.
(Rockwell International Corp. Space Div., Downey, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1975
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 75-353
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Electric Propulsion Conference
Location: New Orleans, LA
Start Date: March 19, 1975
End Date: March 21, 1975
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
75A24959
Funding Number(s)
CONTRACT_GRANT: NAS8-30920
Distribution Limits
Public
Copyright
Other

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