SiC lightweight telescopes for advanced space applications: 2) structures technology

Michael I. Anapol; Peter Hadfield; Theodore W. Tucker

doi:10.1117/12.138094

28 August 1992 SiC lightweight telescopes for advanced space applications: 2) structures technology

Michael I. Anapol, Peter Hadfield, Theodore W. Tucker

Proceedings Volume 1693, Surveillance Technologies II; (1992) https://doi.org/10.1117/12.138094
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

A critical technology area for lightweight SiC-based telescope systems is the structural integrity and thermal stability over spaceborne environmental launch and thermal operating conditions. Note, it is highly desirable to have an inherently athermal design of both SiC mirrors and structure. SSG has developed an 8 inch diameter SiC telescope system for brassboard level optical and thermal testing. The brassboard telescope has demonstrated less than 0.2 waves P-V in the visible wavefront change over +50 C to -200 C temperature range. SSG has also fabricated a SiC truss structural assembly and successfully qualified this hardware at environmental levels greater than 3 times higher than normal Delta, Titan, and ARIES launch loads. SSG is currently developing two SiC telescopes; an 20 cm diameter off-axis 3 mirror re-imaging and a 60 cm aperture on-axis 3 mirror re-imager. Both hardware developments will be tested to flight level environmental, optical, and thermal specifications.

Citation Download Citation

Michael I. Anapol, Peter Hadfield, and Theodore W. Tucker "SiC lightweight telescopes for advanced space applications: 2) structures technology", Proc. SPIE 1693, Surveillance Technologies II, (28 August 1992); https://doi.org/10.1117/12.138094

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