Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1987-06-18
1989-04-25
Barefoot, Galen
Aeronautics and astronautics
Spacecraft
Attitude control
244171, B64G 138
Patent
active
048240524
ABSTRACT:
A nutation sensor and nutation control system using a relative spin phase sensor in a dual-spin stabilized satellite is disclosed. The relative spin phase sensor provides index pulses indicative of the relative spin phase and rate between the satellite rotor and platform. Nutation of the satellite perturbs the relative spin position of the rotor and platform and means are provided for analyzing index pulse arrive times to calculate nutation of the satellite. In the nutation control system, means are provided to apply a nutation damping torque to the satellite.
REFERENCES:
patent: 3714434 (1973-01-01), Mears, Jr. et al.
patent: 3830447 (1974-08-01), Phillips
patent: 3996804 (1976-12-01), Neufeld
patent: 4096427 (1978-06-01), Rosen
patent: 4272045 (1981-06-01), Phillips
patent: 4275861 (1981-06-01), Hubert
patent: 4437047 (1984-03-01), Smay
Gonzalez, Jr. Eugene
Smay John W.
Yocum, Jr. John F.
Barefoot Galen
Hughes Aircraft Company
Karambelas A. W.
Meltzer M. J.
Mitchell S. M.
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