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Proceedings Paper

Hygrothermal design of high stability telescope structure
Author(s): Deoggyu Lee
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Paper Abstract

Structural and hygrothermal analysis for a composite tube is carried out in this study, that provides critical parameters for the design of a highly dimensionally stable space telescope. Carpet plots for laminate effective engineering constants are generated and used for the best tube lay-ups with high elastic modulus and highly insensitive to thermal and moisture expansion, which is essential for maintaining optical alignment of opto-mechanical system under random force applied during a launch campaign and orbital thermal load. Despace in the longitudinal direction under hygrothermal load of the tubes constructed with the selected lay-ups is calculated for the validation of lay-up designs on the dimensional stability. Dynamic analysis is also carried out to feature the resonant behaviour. A zig-zag triangular element accurately representing through thickness stress variations for laminated structures is developed in this study and incorporated into the structural and hygrothermal analysis.

Paper Details

Date Published: 9 December 2005
PDF: 10 pages
Proc. SPIE 6024, ICO20: Optical Devices and Instruments, 602423 (9 December 2005); doi: 10.1117/12.666947
Show Author Affiliations
Deoggyu Lee, Korea Aerospace Research Institute (South Korea)


Published in SPIE Proceedings Vol. 6024:
ICO20: Optical Devices and Instruments
James C. Wyant; X. J. Zhang, Editor(s)

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