Statistics – Applications
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991dncs.rept..393b&link_type=abstract
In ESA, Spacecraft Guidance, Navigation and Control Systems p 393-398 (SEE N92-24432 15-18)
Statistics
Applications
Control Moment Gyroscopes, Gimbals, Magnetic Bearings, Reaction Wheels, Satellite Attitude Control, Vibration Isolators, Actuators, Angular Momentum, Control Systems Design, Degrees Of Freedom, Electrodynamics, Noise Reduction, Pointing Control Systems
Scientific paper
A fully controlled magnetic bearing momentum wheel is well suited as gyroscopic actuator in the attitude control system of spacecraft. It offers the following advantages: an active tilting of the momentum vector with respect to the spacecraft ('vernier gimballing') with the following features: very little power required; three axis attitude control of the spacecraft in a fine pointing range with only one wheel on a control moment gyro mode; no separate nutation damping device necessary; cross momentum storage capability; active vibration suppression, enabling isolation of unbalance vibrations of the wheel from the spacecraft which meets the increasing demand for quiet wheels which can be used in microgravity and in manned space missions; active damping of flexible structures through fully controllable translational bearing forces. The MW-X, a five degree of freedom magnetic bearing momentum wheel incorporates all these advantages and is ideally suited to support all high pointing accuracy and vibration sensitive space missions. Possible applications are communication satellites, especially those with inclined orbit, satellites with optical communication links, microgravity missions, space telescopes and high resolution Earth observation satellites. In long term manned space missions low noise wheels can reduce the effect of vibrations and the associated noise on the spacecraft environment and crew.
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