Measuring and testing – Testing by imparting motion
Patent
1991-06-20
1993-03-30
Noland, Tom
Measuring and testing
Testing by imparting motion
248659, 248661, 248663, 248908, 434 34, 738664, G01M 1900
Patent
active
051973413
ABSTRACT:
The testing device, also known as a totally integrated payload attitude control tester (T.I.P.A.C.T.), is suspend on a single, high strength, low torsional moment line through the gravity vector axis. Attached directly to this line is a strong back assembly having a fixed lateral width with ends thereon. Attached to the ends of the strong back assembly are thin, high strength straps which are connected to a pair of tensile universal joints which are further connected to, by way of this high strength straps, to a pair of trunnions. The trunnions are connected to the payload support frame which may have a satellite payload therein. The three orthogonal axes of the test device allow rotation to .+-.45 degrees, .+-.60 degrees and >360 degrees, simultaneously in roll, yaw, and pitch respectively. The thin fabric strap allows movement with virtually no friction or suspension resistance. The strap's elastic restoring torque being very small is overcome transparently by adjusting the overturning moments in initial balancing. Because straps such as the above can only sustain tensile loads, multiple straps are used in combination angles to sustain the shear load as a result of roll rotation. The yaw axis joint may have instead a thin homogeneous material sheet to carry both shear and tensile loads.
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Collier Stanton E.
Noland Tom
Singer Donald J.
The United States of America as represented by the Secretary of
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