Method and apparatus for reactionless rotation
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United States of America Patent
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Jul 21, 1992
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N/A
app pub date -
Apr 26, 1991
filing date -
Apr 26, 1991
priority date (Note) -
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Abstract
An object mounted on a carrier constitute a rotationally free system such as a telescope on a space vehicle. A separation vector is directed from the center-of-mass of the carrier to the center-of-mass of the object. The object is rotated through a selected angle thereby defining a rotation vector. Simultaneously the object is translated so as to displace the object center-of-mass through a translation distance in a direction such that mathematically crossing the translation vector into the separation vector results in a further vector having the same direction as the rotation vector. A formula is provided for the translation distance in order that the object may be rotated without counter-rotation of the carrier.
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