Dynamic Analysis Of The SIRTF One-Meter Mirror During Launch

R. M. Richard; M Cho; W. Pollard

doi:10.1117/12.948345

27 April 1988 Dynamic Analysis Of The SIRTF One-Meter Mirror During Launch

R. M. Richard, M Cho, W. Pollard

Proceedings Volume 0973, Cryogenic Optical Systems and Instruments III; (1988) https://doi.org/10.1117/12.948345
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

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.

Citation Download Citation

R. M. Richard, M Cho, and W. Pollard "Dynamic Analysis Of The SIRTF One-Meter Mirror During Launch", Proc. SPIE 0973, Cryogenic Optical Systems and Instruments III, (27 April 1988); https://doi.org/10.1117/12.948345

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