HB-Cesic composite for space optics and structures

Matthias R. Krödel; Tsuyoshi Ozaki

doi:10.1117/12.731011

17 September 2007 HB-Cesic composite for space optics and structures

Matthias R. Krödel, Tsuyoshi Ozaki

Proceedings Volume 6666, Optical Materials and Structures Technologies III; 66660E (2007) https://doi.org/10.1117/12.731011
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Matthias R. Krödel and Tsuyoshi Ozaki "HB-Cesic composite for space optics and structures", Proc. SPIE 6666, Optical Materials and Structures Technologies III, 66660E (17 September 2007); https://doi.org/10.1117/12.731011

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