An evaluation of reaction wheel emitted vibrations for space telescope

Details An evaluation of reaction wheel emitted vibrations for space telescope An evaluation of reaction wheel emitted vibrations for space telescope

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sfs..rept......&link_type=abstract

Final Report Sperry Flight Systems, Phoenix, AZ.

Astronomy and Astrophysics

Astronomy

Reaction Wheels, Rotor Speed, Spaceborne Telescopes, Vibration Measurement, Background Noise, Ball Bearings, Spaceborne Astronomy, Vibration Tests

Scientific paper

Emitted forces and moments characteristics of the Space Telescope Reaction Wheel Assembly (ST RWA) were measured under room temperature and pressure, thermal extremes, and vibratory conditions. The RWA/Emitted Vibration Measurement Fixture was calibrated statically and dynamically, and background noise was measured with ST RWA not operating. A base line set of forces and moments of the ST RWA along and about three mutually perpendicular axes were recorded at room ambient. The temperature vibration sensitivites shown are those which were concluded to be a function of rotor unbalance changes and not associated with either spin motor nor rotor electronic changes.

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