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Proceedings Paper

Study on the support technology of the light-weighted mirror
Author(s): Nengbing Zhu; Bo QI; Ge Ren; Fuyin Zhu; Zhiwei Ai
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Paper Abstract

To reduce the surface deformation of a space remote sensor mirror in space environments, a flexible supporting structure of space mirror is designed to improve the surface accuracy of mirror under operating conditions, making the mirror in good thermal dimensional stability and the structure stiffness meet the requirements of mechanics at the same time. Using the finite element method to do simulation analysis about the surface accuracy and structural strength and dynamic stiffness of the mirror assembly under the force-heat coupling state. Simulation results show that the first-order natural frequency of the mirror component is 393.73Hz, and the RMS values of 1g gravity respectively reach 8.920nm, 1.856nm, 4.516nm; under 1g gravity and 4 degrees centigrade rising coupling state in three directions, the RMS values respectively reach 10.02nm, 3.312nm, 5.718nm, the results meet the design specifications requirement that the RMS value less than λ/50 (λ=632.8nm). Finally, the analysis of the random vibration was carried out on the mirror components, results show that the mirror and its supporting structure was designed reasonable which can meet the requirements of space applications.

Paper Details

Date Published: 24 October 2016
PDF: 8 pages
Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820X (24 October 2016); doi: 10.1117/12.2243410
Show Author Affiliations
Nengbing Zhu, Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Univ. of Chinese Academy of Sciences (China)
Bo QI, Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Ge Ren, Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Fuyin Zhu, Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Univ. of Chinese Academy of Sciences (China)
Zhiwei Ai, Institute of Optics and Electronics (China)
Key Lab. of Optical Engineering (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 9682:
8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Myung K. Cho; Bin Fan, Editor(s)

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