Design, Simulation and Manufacturing a CFRP Prototype Mirror for Active/Adaptive Optics

Baghsiahi, Hadi, Jones, Martyn, Brooks, David and Doel, Peter (2019) Design, Simulation and Manufacturing a CFRP Prototype Mirror for Active/Adaptive Optics. In: SPIE Optifab, 14-17 October 2019, Rochester, New York, United States.

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Abstract

In this work, we are aiming to reduce the mass of large precision mirrors for space missions by using space approved composite materials. We report the development of an active/adaptive optics prototype of carbon fiber reinforced polymer mirrors using a pre-impregnated (pre-preg) composite MTM44-1/IMS65. The carbon fiber mirror has 16 layers of carbon fiber and one layer of polishable resin which compensate the well-known problem of ‘’fiber print through’’. The development of a fabrication method, suited for creating a CFRP mirror is outlined. As all materials will change properties to some degree, during cool down to cryogenic temperatures, FEA model is employed to investigate the change on overall form and figure of the mirror. Characterizing this dimensional change is critical in insuring that any mirror material can be used in this environment and, if required, corrected either by utilizing a deformable mirror control systems or by correction in the optical system. Two different piezoelectric actuators are modelled and used to create an active composite reflector. Push actuators and micro fiber composite (MFC) actuators are simulated and the performance of them are compared by surface deformation and dynamic response.

Item Type: Conference or Workshop Item (Paper)
Keywords: CFRP, Carbon fibre, large mirror, space telescopes, composite mirrors, CTE, active optics, adaptive optics, aberration corrections
Divisions: Applied Science, Computing and Engineering
Depositing User: Hayley Dennis
Date Deposited: 12 Feb 2020 13:06
Last Modified: 12 Feb 2020 13:06
URI: http://glyndwr.repository.guildhe.ac.uk/id/eprint/17553

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