Aeronautics and astronautics – Spacecraft – With special crew accommodations
Patent
1996-02-28
1998-04-14
Mojica, Virna Lissi
Aeronautics and astronautics
Spacecraft
With special crew accommodations
244165, 244164, 342355, 364459, B64G 128, B64G 136
Patent
active
057383090
ABSTRACT:
A method and system of orienting a payload of an orbiting spacecraft (14) to maintain a desired pointing profile in the presence of orbit inclination. A cone (12) is determined which is traced in inertial space by a pitch axis of the payload to maintain the desired pointing profile throughout an orbit. A bias momentum vector of the spacecraft (14) is oriented at an attitude which lies along the cone (12). The attitude has a nonzero angle with respect to a plane spanned by an orbit normal vector and an equatorial normal vector. The payload is rotated about a single body-fixed axis perpendicular to the pitch axis to align the pitch axis along the cone (12). As a result, the desired pointing profile is maintained throughout the inclined orbit.
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Denson-Low Wanda K.
Gudmestad Terje
Hughes Electronics
Leitereg Elizabeth E.
Mojica Virna Lissi
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