Stabilization of a spinning spacecraft of arbitary shape

Details Stabilization of a spinning spacecraft of arbitary shape Stabilization of a spinning spacecraft of arbitary shape

1988-11-18

1990-10-09

Jordan, Charles T.

Aeronautics and astronautics

Spacecraft

Attitude control

244169, 244172, B64G 124

Patent

active

049615513

ABSTRACT:
A stabilization system for a spacecraft (10) which enables the spacecraft to be stabilized by rotation about any principal moment of inertia axis. The system includes two pairs of control thrusters (14, 16, 18, 20) for producing positive and negative control moments about two orthogonal axes mutually perpendicular to the axis of rotation of the spacecraft. The control system (40) includes rate gyros (42, 46) which provide error signals which are sent to duty cycle modulators (54). The duty cycle modulators provide a pulse width modulated control signal to the control thrusters to approximate proportional control of spacecraft attitude.

REFERENCES:
patent: 4725024 (1988-02-01), Vorlicek
patent: 4767084 (1988-08-01), Chan et al.

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