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18 July 1986 Design Of A Support System For The Primary Mirror Of A Cryogenic Space Telescope
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Proceedings Volume 0619, Cryogenic Optical Systems and Instruments II; (1986)
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States
The finite element method was used for the structural design of the Space Infrared Telescope Facility (SIRTF) primary mirror and its support system in a cryogenic environment similar to space-shuttle cargo-bay launch conditions. Shuttle loads were specified by power spectral density functions (PSDF) obtained from previous shuttle launches. The primary goal in the development of a design to withstand this random loading was to ensure the structural integrity of the support system, which comprised an aluminum baseplate and three titanium flexures. This design was an extension of a support system previously developed for cryogenic static effects only. The displacements and stresses of the support system are greatly affected by the damping characteristics of the flexures, which are very difficult to quantify. A parametric study illustrates the behavior of the system over the range of the estimated damping values. Recommendations and techniques for modeling this type of structure are presented. The methods and approaches used in the analysis and the effect of model refinement upon solution accuracy are discussed.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Robert DiTolla, Ralph M. Richard, and Daniel Vukobratovich "Design Of A Support System For The Primary Mirror Of A Cryogenic Space Telescope", Proc. SPIE 0619, Cryogenic Optical Systems and Instruments II, (18 July 1986);


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