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Proceedings Paper

Time-dependent deformation of surface geometry on light weight and thermally stable CFRP mirror in humid environment
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Paper Abstract

CFRP (Carbon Fiber Reinforced Plastics) is the ideal material for space based mirror due to its low thermal expansion, and high specific modulus. To expand the use of CFRP, we investigated the long-term stability of CFRP under humid environment. CFRP mirror was made as precise as possible by using special class of material and adopting particular design techniques. Dimensional stability of CFRP mirror was evaluated by nano-scale measurement. The factors which cause out-of-plane deformation of the mirror is discussed.

Paper Details

Date Published: 23 July 2010
PDF: 7 pages
Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77392N (23 July 2010); doi: 10.1117/12.856910
Show Author Affiliations
Yoshihiko Arao, Waseda Univ. (Japan)
Jun Koyanagi, Japan Aerospace Exploration Agency (Japan)
Shin Utsunomiya, Japan Aerospace Exploration Agency (Japan)
Shin-ichi Takeda, Japan Aerospace Exploration Agency (Japan)
Hiroyuki Kawada, Waseda Univ. (Japan)


Published in SPIE Proceedings Vol. 7739:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation
Eli Atad-Ettedgui; Dietrich Lemke, Editor(s)

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