Lightweight SiC foamed mirrors for space applications

Andrea Novi; Giuseppe Basile; Oberto Citterio; Mauro Ghigo; Aldo Caso; Gianluigi Cattaneo; G. Francesco Svelto

doi:10.1117/12.447323

5 November 2001 Lightweight SiC foamed mirrors for space applications

Andrea Novi, Giuseppe Basile, Oberto Citterio, Mauro Ghigo, Aldo Caso, Gianluigi Cattaneo, G. Francesco Svelto

Proceedings Volume 4444, Optomechanical Design and Engineering 2001; (2001) https://doi.org/10.1117/12.447323
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

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.

Citation Download Citation

Andrea Novi, Giuseppe Basile, Oberto Citterio, Mauro Ghigo, Aldo Caso, Gianluigi Cattaneo, and G. Francesco Svelto "Lightweight SiC foamed mirrors for space applications", Proc. SPIE 4444, Optomechanical Design and Engineering 2001, (5 November 2001); https://doi.org/10.1117/12.447323

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