Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1992-08-28
1996-10-29
Kashnikow, Andres
Aeronautics and astronautics
Spacecraft
Attitude control
244158R, 244164, B64G 124, B64G 126, F02K 100, F02K 702
Patent
active
055689043
ABSTRACT:
A satellite perigee velocity augmentation method wherein a satellite is steered throughout the perigee velocity augmentation maneuver such that its thrust vector is always oriented approximately opposite to the direction of motion of the satellite. The satellite is pitched around a predetermined axis (e.g. the Y-axis) such that the thrust vector is always pointing approximately opposite to the direction of motion of the satellite. The satellite is steered during the perigee velocity augmentation maneuver in order to achieve the desired attitude wherein the thrust vector is always oriented approximately opposite to the direction of motion of the satellite is accomplished by pitching the satellite around the predetermined axis such that the thrust vector is always pointing approximately opposite to the direction of motion of the satellite. By steering the satellite in accordance with the present perigee velocity augmentation method, overall efficiency achieved is increased. This increased efficiency allows a satellite of greater mass to reach geosynchronous orbit, since less fuel is required to perform the maneuvers.
REFERENCES:
patent: 3215365 (1965-11-01), Wyatt et al.
patent: 4741502 (1988-05-01), Rosen
patent: 4896848 (1990-01-01), Ballard et al.
patent: 4943014 (1990-07-01), Harwood et al.
patent: 5082211 (1992-01-01), Werka
Brock J. Kurt
Stratemeier Darren R.
Williams Eugene L.
Float Kenneth W.
Karambelas Anthony W.
Kashnikow Andres
Mojica Virna
Space Systems Loral, Inc.
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