Carbon-carbon mirrors for exoatmospheric and space applications

Krumweide, Duane E.; Wonacott, G D; Woida, Patrick M.; Woida, R.; Shih, Wei-Liang

doi:10.1117/12.735854

Cited by 1 publication

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“…One form applies a sandwich structure with carbon fiber material as the top and bottom panel and honeycomb material as the intermediate support [14,16,17]. The other form uses all carbon fiber not only as the top and bottom but also as the intermediate support [11][12][13]18].…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of the CFRP mirror components

2017

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As carbon fiber reinforced polymer (CFRP) material has been developed and demonstrated as an effective material in lightweight telescope reflector manufacturing recently, the authors of this article have extended to apply this material on the lightweight space camera mirror design and fabrication. By CFRP composite laminate design and optimization using finite element method (FEM) analysis, a spherical mirror with 316 mm diameter whose core cell reinforcement is an isogrid configuration is fabricated. Compared with traditional ways of applying ultra-low-expansion glass (ULE) on the CFRP mirror surface, the method of nickel electroplating on the surface effectively reduces the processing cost and difficulty of the CFRP mirror. Through the FEM analysis, the first order resonance frequency of the CFRP mirror components reaches up to 652.3 Hz. Under gravity affection coupling with +5℃ temperature rising, the mirror surface shape root-mean-square values (RMS) at the optical axis horizontal state is 5.74 nm, which meets mechanical and optical requirements of the mirror components on space camera.

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