Mechanical stabilization system having counter-rotating rotors w

Details Mechanical stabilization system having counter-rotating rotors w Mechanical stabilization system having counter-rotating rotors w

1990-01-26

1991-08-27

Peters, Jr., Joseph F.

Aeronautics and astronautics

Spacecraft

Attitude control

310114, 244158R, 244173, B64G 128, B64G 144, H02K 1600

Patent

active

050427539

ABSTRACT:
The system for stabilizing a support to be stabilized comprises a working rotor mounted on the support via bearings and fixed to a working member having at least one parameter associated with the rotation of the working rotor and which is variable as a function of time. A servo-controlled first electric motor is interposed between the support and the working rotor and serves to rotate the working rotor in a first direction. A reaction rotor is mounted on the support by means of bearings and independently from the working rotor, while being coaxial therewith. The reaction rotor supports a reaction inertia member, and a servo-controlled second electric motor is interposed between the reaction rotor and the support in order to rotate the reaction rotor in the opposite direction to the working rotor and at a higher speed so as to cancel the disturbances applied to the support by the working rotor, with the mass of the rotary assembly associated with the reaction rotor being less than the mass of the rotary assembly associated with the working rotor.

REFERENCES:
patent: 3341151 (1967-09-01), Kampinsky
patent: 4219107 (1980-08-01), Ford
patent: 4230294 (1980-10-01), Pistiner
patent: 4723735 (1988-02-01), Eisenhaure et al.
"A Reactionless Precision Pointing Actuator", P. Wiktor, pp. 165-175, May 1, 1987, Aerospace Mechanism Symposium.

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