Statistics – Applications
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.524..279w&link_type=abstract
In: Proceedings of the 10th European Space Mechanisms and Tribology Symposium, 24-26 September 2003, San Sebastián, Spain. Compi
Statistics
Applications
Low-Power Solar Array
Scientific paper
A generic high precision flexible pivot dedicated to pointing and scanning space mechanisms is described. Typical applications are payload scientific instruments and inter-satellite communication systems. The work started with a comprehensive analysis of the present and future market and mission needs. This survey was used to define requirements for a baseline pivot concept in terms of mobile mass, inertias, size, angular strokes, etc. A comprehensive solution catalogue was established and traded-off to select an original concept. This concept was designed in detail and manufactured by wire electro-discharge machining for characterization on special test benches. The main characteristic of the proposed design is its very small parasitic center translation: less than 2 μm off axis shift over a ±10° motion range (which is 65 times less than a classical cross spring pivot of the same size). Resolution better than 50 μrad was achieved over a ±10° stroke. Fatigue tests show that the pivots can endure more than 1.4 million cycles of ±7.5° stroke without failure.
Hamzè N.
Sutter Guido
Wood Bernard
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