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Design and test of a flexure mount for lightweight mirror
Author(s): Guo-rui Ren; Chuang Li; Zhi-hai Pang; Chang-bo Chu; Hao-su Zhang; Tian-bing He
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Paper Abstract

The 470mm lightweight primary mirror of a space telescope is made of ULE, and supported on a titanium hexapod. The hexapod consists of six bond pads, six titanium struts with flexures and three support parts. The hexapod provides a quasi-kinematic mount for the lightweight mirror, and the flexures are used to isolate optical elements from the mechanical and thermal deformations of the support structure, then the surface figure distortion of the mirror is minimized. In this paper, the finite element method is used to analyze the static and dynamic characteristics of the mirror assembly. Then, six pads are bonded to the mirror and the support hexapod is assembly. The vertical optical test of the primary mirror assembly is implemented. Vibration test of the mirror assembly is performed, and the test results are consistent with the results of the finite element analysis.

Paper Details

Date Published: 11 January 2019
PDF: 10 pages
Proc. SPIE 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 108370B (11 January 2019); doi: 10.1117/12.2504940
Show Author Affiliations
Guo-rui Ren, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Chuang Li, Xi'an Institute of Optics and Precision Mechanics (China)
Zhi-hai Pang, Xi'an Institute of Optics and Precision Mechanics (China)
Chang-bo Chu, Xi'an Institute of Optics and Precision Mechanics (China)
Hao-su Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Tian-bing He, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10837:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Xiaoliang Ma; Bin Fan; Yongjian Wan; Adrian Russell; Xiangang Luo, Editor(s)

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