Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

Hadi Baghsiahi; Martyn Jones; David Brooks; Peter Doel

doi:10.1117/12.2537775

15 November 2019 Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics

Hadi Baghsiahi, Martyn Jones, David Brooks, Peter Doel

Proceedings Volume 11175, Optifab 2019; 111750W (2019) https://doi.org/10.1117/12.2537775
Event: SPIE Optifab, 2019, Rochester, New York, United States

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.

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Hadi Baghsiahi, Martyn Jones, David Brooks, and Peter Doel "Design, simulation and manufacturing a CFRP prototype mirror for active/adaptive optics", Proc. SPIE 11175, Optifab 2019, 111750W (15 November 2019); https://doi.org/10.1117/12.2537775

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KEYWORDS

Mirrors

Actuators

Composites

Carbon

Surface finishing

Microsoft Foundation Class Library

Optics manufacturing

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