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Proceedings Paper

The Flexure Assembly Design For The SIRTF One-Meter Primary Mirror
Author(s): R. M. Richard; D Vukobratovich; M. Cho; L. W. Pollard; R. K. Melugin
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Paper Abstract

A titanium flexure assembly for the Space Infrared Telescope Facility (SIRTF) 1-m primary mirror has been designed to accommodate (1) the cryogenic cool-down effect on the optical performance of the mirror, (2) the shuttle launch-load envi:onment, and (3) the support-baseplate manufacturing tolerances. Numerous iterations involving a multi-dimensional design space search led to an assembly design that provides the stiffness and strength in the vertical (optical axis) and tangential directions to accommodate launch loads, but is compliant radially to accommodate cryogenic cool down. A "folded back" titanium flexure system was required because of the differential thermal contraction of the aluminum telescope baseplate support and the fused-silica mirror. This unique and innovative flexure assembly represents a totally passive mechanism for accommodating the design launch loads, cryogenic cool down, and out-of-plane baseplate effects.

Paper Details

Date Published: 27 April 1988
PDF: 7 pages
Proc. SPIE 0973, Cryogenic Optical Systems and Instruments III, (27 April 1988); doi: 10.1117/12.948343
Show Author Affiliations
R. M. Richard, University of Arizona (United States)
D Vukobratovich, University of Arizona (United States)
M. Cho, University of Arizona (United States)
L. W. Pollard, University of Arizona (United States)
R. K. Melugin, NASA Ames Research Center (United States)

Published in SPIE Proceedings Vol. 0973:
Cryogenic Optical Systems and Instruments III
Ramsey K. Melugin; Warren G. Pierce, Editor(s)

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