Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1998-04-09
2000-06-06
Poon, Peter M.
Aeronautics and astronautics
Spacecraft
Attitude control
244164, 244173, B64G 136, B64G 124, B64G 144
Patent
active
060708336
ABSTRACT:
Solar wing positioning methods are provided which favorably reduce seasonal variation of generated power in a satellite while simultaneously managing the composite system influence that off-pointed solar wing operation imposes on the satellite. The composite system influence includes environmental torques and may also include other system influences such as wing-to-body thermal radiation, thruster plume impingement and antenna/sensor field of view encroachment. In the simplest method embodiment, the solar wings are tilted asymmetrically from a nominal position to reduce seasonal power variations and are further tilted symmetrically to generate a solar pressure torque component which, on a diurnal average basis, compensates a gravity gradient torque component that is substantially generated by the net, off-pointed configuration of the wings.
REFERENCES:
patent: 5310144 (1994-05-01), Salvatore et al.
patent: 5669586 (1997-09-01), Tadros
patent: 5697582 (1997-12-01), Surauer et al.
patent: 5895014 (1999-04-01), Sullivan
U.S. application No. 08/690,702, filed Jul. 31, 1996.
Burke Stephen D.
Ketkar Umesh S.
Ducker, Jr. Charles R
Gudmestad T.
Hughes Electronics Corporation
Poon Peter M.
Sales M. W.
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