Satellite solar array and method of biasing to reduce seasonal o

Details Satellite solar array and method of biasing to reduce seasonal o Satellite solar array and method of biasing to reduce seasonal o

1996-07-31

1999-04-20

Barefoot, Galen L.

Aeronautics and astronautics

Spacecraft

Attitude control

244173, B64G 144

Patent

active

058950141

ABSTRACT:
Existing satellite solar arrays are deployed perpendicular to the satellite so that they rotate to track the daily movement of the sun to increase the solar array's' output power. In the present invention, the solar arrays are biased by a fixed amount away from the orbit perpendicular axis to maximize their minimum output power over the seasons. As the satellite orbits about the earth, the solar array rotates about the orbit perpendicular axis along a conical path so that the array faces towards the sun and maintains its biased attitude with respect to the sun. The biased attitude is preferably selected to equalize the solar array's summer and winter solstice output power minimums, thereby maximizing the worst case output power for a single axis of rotation solar array. The solar array is preferably biased by either forming the shim between the solar array drive mechanism and the solar array with the desired bias or by using the Adjustable Solar Wing Actuator (ASWA) available on certain satellites.

REFERENCES:
patent: 4371135 (1983-02-01), Keigler
patent: 4508297 (1985-04-01), Mouihayrat et al.
patent: 4728061 (1988-03-01), Johnson et al.
patent: 5228644 (1993-07-01), Garrriott et al.
patent: 5312073 (1994-05-01), Flament et al.
patent: 5626315 (1997-05-01), Flament et al.

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