Lightweight SiC foamed mirrors for space applications

Details Lightweight SiC foamed mirrors for space applications Lightweight SiC foamed mirrors for space applications

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001spie.4444...59n&link_type=abstract

Proc. SPIE Vol. 4444, p. 59-65, Optomechanical Design and Engineering 2001, Alson E. Hatheway; Ed.

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Scientific paper

By combining the excellent intrinsic thermo-mechanical properties of the silicon carbide (SiC) with a structural design based on a sandwich structure composed of two SiC face sheets deposited on a foam core of the same material, it is possible to manufacture very light and stiff mirrors for space applications. This paper presents some results of a technological development study, including the realization of a lightweight athermalized SiC telescope with a 310 mm diameter foamed-SiC primary mirror. An ion beam figuring equipment has been developed to improve the optical quality of the mirror.

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