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Proceedings Paper

HB-Cesic composite for space optics and structures
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Paper Abstract

One of the key technologies for next generation space telescopes requiring large-scale reflectors are light-weight materials 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. An example of the latter material is a Hybrid Carbon-Fiber Reinforced SiC composite or HB-Cesic - a trademark of ECM - which has been developed by ECM and MELCO to meet the stringent space telescope requirements. Mechanical performance, such as stiffness, bending strength and fracture toughness, were significantly improved using HB-Cesic compared to our classic Cesic material. Thermal expansion and thermal conductivity of HB-Cesic at cryogenic temperatures are now partly established and excellent performance for large future space mirrors and structures are expected. In this paper we will report on the current status of development of HB-Cesic and describe the first successful applications made with this new improved material.

Paper Details

Date Published: 17 September 2007
PDF: 10 pages
Proc. SPIE 6666, Optical Materials and Structures Technologies III, 66660E (17 September 2007); doi: 10.1117/12.731011
Show Author Affiliations
Matthias R. Krödel, ECM Ingenieur-Unternehmen fuer Energie- und Umwelttechnik GmbH (Germany)
Tsuyoshi Ozaki, Mitsubishi Electric Corp. (Japan)

Published in SPIE Proceedings Vol. 6666:
Optical Materials and Structures Technologies III
William A. Goodman; Joseph L. Robichaud, Editor(s)

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