29 July 2016 CFRP mirror technology for cryogenic space interferometry: review and progress to date
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Abstract
The FP7 project, FISICA (Far Infrared Space Interferometer Critical Assessment), called for the investigation into the suitability of Carbon fiber Reinforced Plastic (CFRP) for a 2m primary mirror. In this paper, we focus on the major challenge for application, the development of a mirror design that would maintain its form at cryogenic temperatures. In order to limit self-emission the primary is to be cooled to 4K whilst not exceeding a form error of 275nm PV. We then describe the development of an FEA model that utilizes test data obtained from a cryogenic test undertaken at the University of Lethbridge on CFRP samples. To conclude, suggestions are made in order to advance this technology to be suitable for such an application in order to exploit the low density and superior specific properties of polymeric composites.
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Martyn L. Jones, Martyn L. Jones, David Walker, David Walker, David A. Naylor, David A. Naylor, Ian T. Veenendaal, Ian T. Veenendaal, Brad G. Gom, Brad G. Gom, } "CFRP mirror technology for cryogenic space interferometry: review and progress to date", Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99046F (29 July 2016); doi: 10.1117/12.2233645; https://doi.org/10.1117/12.2233645
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