Design and Optimization of the CFRP Mirror Components  

作　　者：Lei WEI Lei ZHANG Xiaoxue GONG 

机构地区：[1]University of Chinese Academy of Sciences, Beijing, 100039, China [2]Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China [3]Chang Guang Satellite Technology LTD. Co, Changchun, 130000, China

出　　处：《Photonic Sensors》2017年第3期270-277,共8页光子传感器（英文版）

基　　金：Acknowledgement This work was supported by the National Natural Science Foundation of China （NSFC） （No. 41501383）.

摘　　要：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 φ316 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 652.3Hz. 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.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 φ316 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 652.3Hz. 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.

关 键 词：Pure-CFRP mirror lay-up design bipod integrated optimization 

分 类 号：TH74[机械工程—光学工程] TB332[机械工程—仪器科学与技术]