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Proceedings Paper

Mechanical and thermal performance of C/SiC composites for SPICA mirror
Author(s): Tsuyoshi Ozaki; Masami Kume; Takeharu Oshima; Takao Nakagawa; Toshio Matsumoto; Hidehiro Kaneda; Hiroshi Murakami; Koichi Kataza; Keigo Enya; Yukari Yui; Takashi Onaka; Matthias R. Krodel
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Paper Abstract

One of the key technologies for next generation space telescope with a large-scale reflector is a material having high specific strength, high specific stiffness, low coefficient of thermal expansion and high coefficient of thermal conductivity. Several candidates such as fused silica, beryllium, silicon carbide and carbon fiber reinforced composites have been evaluated. Pitch-based carbon fiber reinforced SiC composites were developed for the SPICA space telescope mirror to comply with such requirements. Mechanical performance such as bending stiffness, bending strength and fracture toughness was significantly improved. Evaluation procedures of thermal expansion and thermal conductivity behavior at cryogenic temperatures (as low as 4.5K) were established and excellent performance for the SPICA mirror was demonstrated.

Paper Details

Date Published: 24 September 2004
PDF: 8 pages
Proc. SPIE 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes, (24 September 2004); doi: 10.1117/12.552484
Show Author Affiliations
Tsuyoshi Ozaki, Mitsubishi Electric Corp. (Japan)
Masami Kume, Mitsubishi Electric Corp. (Japan)
Takeharu Oshima, Mitsubishi Electric Corp. (Japan)
Takao Nakagawa, Japan Aerospace Exploration Agency (Japan)
Toshio Matsumoto, Japan Aerospace Exploration Agency (Japan)
Hidehiro Kaneda, Japan Aerospace Exploration Agency (Japan)
Hiroshi Murakami, Japan Aerospace Exploration Agency (Japan)
Koichi Kataza, Japan Aerospace Exploration Agency (Japan)
Keigo Enya, Japan Aerospace Exploration Agency (Japan)
Yukari Yui, Japan Aerospace Exploration Agency (Japan)
Takashi Onaka, Univ. of Tokyo (Japan)
Matthias R. Krodel, ECM Ingenieur-Unternehmen fur Energie-und Umwellechnik GmbH (Germany)

Published in SPIE Proceedings Vol. 5494:
Optical Fabrication, Metrology, and Material Advancements for Telescopes
Eli Atad-Ettedgui; Philippe Dierickx, Editor(s)

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