Active spin axis control for spinning space vehicles

Details Active spin axis control for spinning space vehicles Active spin axis control for spinning space vehicles

1990-12-14

1992-11-17

Barefoot, Galen

Aeronautics and astronautics

Spacecraft

Attitude control

B64G 124

Patent

active

051636409

ABSTRACT:
Selective reconfiguration of existing spacecraft on-board control and propulsion equipment is provided. The modification combines add-on switch means such as solid state multiplexers or relay banks and rate sensing gyros with existing accelerometers, propulsion control electronics and thrusters. The switch means reconfigure the input circuits and the output circuits of the propulsion control electronics. The switch means select the rate sensing gyro and the liquid apogee motors for control of spacecraft spin axis coning during perigee solid rocket motor firing, and reselects the accelerometer and reaction control thrusters for on-orbit nutation control.

REFERENCES:
patent: 4012018 (1977-03-01), Lorell et al.
patent: 4471926 (1984-09-01), Steel, III
patent: 4657210 (1987-04-01), Hubert et al.
patent: 4758957 (1988-07-01), Hubert et al.
"Active Nutation Control for Spinning Solid Motor Upper Stages" by E. A. Webster dated 8-10 Jul. 1985.

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