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Proceedings Paper

Dynamic Analysis Of The SIRTF One-Meter Mirror During Launch
Author(s): R. M. Richard; M Cho; W. Pollard
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Paper Abstract

The dynamic analyses and design criteria that lead to the design of a titanium flexure mount of the primary mirror of the Space Infrared Telescope Facility (SIRTF) are presented. This flexure system passively accommodates the differential thermal contraction between the glass mirror and the aluminum structure of the telescope during cryogenic cooldown and supports the one-meter-diameter, 116-kg (258-1b) primary mirror during a severe space shuttle launch environment. Design criteria and procedures used to establish the required strength and radial compliance using computer programs NASTR AN and FRINGE are discussed. Several methods of combining modal responses resulting from a Displacement Response Spectrum analysis are given and the combination methods of Modified Root of Sum Squares (MRSS), Square Root Sum of the Squares (SRSS), and the Absolute Sum (ABS), are compared to the results of a Modal Frequency Response analysis.

Paper Details

Date Published: 27 April 1988
PDF: 14 pages
Proc. SPIE 0973, Cryogenic Optical Systems and Instruments III, (27 April 1988); doi: 10.1117/12.948345
Show Author Affiliations
R. M. Richard, University of Arizona (United States)
M Cho, University of Arizona (United States)
W. Pollard, University of Arizona (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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