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Proceedings Paper

Mechanical and thermal performance of C/SiC composites for SPICA mirror
Author(s): T. Ozaki; M. Kume; T. Oshima; T. Nakagawa; T. Matsumoto; H. Kaneda; H. Murakami; K. Kataza; K. Enya; Y. Yui; T. Onaka; M. Kroedel
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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: 18 August 2005
PDF: 10 pages
Proc. SPIE 5868, Optical Materials and Structures Technologies II, 58680H (18 August 2005); doi: 10.1117/12.619402
Show Author Affiliations
T. Ozaki, Mitsubishi Electric Corp. (Japan)
M. Kume, Mitsubishi Electric Corp. (Japan)
T. Oshima, Mitsubishi Electric Corp. (Japan)
T. Nakagawa, Japan Aerospace Exploration Agency (Japan)
T. Matsumoto, Japan Aerospace Exploration Agency (Japan)
H. Kaneda, Japan Aerospace Exploration Agency (Japan)
H. Murakami, Japan Aerospace Exploration Agency (Japan)
K. Kataza, Japan Aerospace Exploration Agency (Japan)
K. Enya, Japan Aerospace Exploration Agency (Japan)
Y. Yui, Japan Aerospace Exploration Agency (Japan)
T. Onaka, Department of Astronomy, School of Science, Tokyo (Japan)
M. Kroedel, ECM, Ingenieur-Unternehmen fur Energie-und Umwelttechnik (Germany)

Published in SPIE Proceedings Vol. 5868:
Optical Materials and Structures Technologies II
William A. Goodman, Editor(s)

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