Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1984-12-28
1988-02-09
Barefoot, Galen
Aeronautics and astronautics
Spacecraft
Attitude control
322 4, 310 905, B64G 128
Patent
active
047237350
ABSTRACT:
An energy storage attitude control and reference system for a craft including at least two flywheels with their angular momenta balanced to produce zero net angular momentum and at least two motor/generator units each including one of the flywheels in its rotor structure. The system further includes one pair of bearings for supporting each of the flywheels, means for measuring the position of each flywheel relative to its bearings, means for resolving current to and from said motor/generator units, means for applying torques to each flywheel through its respective bearings for controlling attitude of the craft about two mutually perpendicular axes, and means for exerting torques to each flywheel through its respective motor/generator to provide attitude control of the craft about a third axis perpendicular to the first two and for controlling the energy storage level of the flywheels.
REFERENCES:
patent: 3158750 (1964-11-01), Roes
patent: 3591108 (1971-07-01), Perkel
patent: 4164018 (1979-08-01), Legrand
patent: 4179729 (1979-12-01), Stanton et al.
patent: 4211452 (1980-07-01), Poubeau
patent: 4483570 (1984-11-01), Inoue
Poubeau, "Satellite Flywheels with Magnetic Bearings and Passive Radial Centering", Journal of Spacecraft, vol. 17, Nos. 2, 3,4/1980.
Bliamptis Tim E.
Downer James R.
Eisenhaure David B.
Hendrie Susan D.
Oberbeck George A.
Barefoot Galen
Denninger Douglas E.
Iandiorio Joseph S.
The Charles Stark Draper Laboratory Inc.
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