Hygrothermal design of high stability telescope structure

Deog-Gyu Lee

doi:10.1117/12.668094

1 February 2006 Hygrothermal design of high stability telescope structure

Deog-Gyu Lee

Proceedings Volume 6034, ICO20: Optical Design and Fabrication; 60340B (2006) https://doi.org/10.1117/12.668094
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

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.

Citation Download Citation

Deog-Gyu Lee "Hygrothermal design of high stability telescope structure", Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60340B (1 February 2006); https://doi.org/10.1117/12.668094

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