Study on the support technology of the light-weighted mirror

Nengbing Zhu; Bo QI; Ge Ren; Fuyin Zhu; Zhiwei Ai

doi:10.1117/12.2243410

24 October 2016 Study on the support technology of the light-weighted mirror

Nengbing Zhu, Bo QI, Ge Ren, Fuyin Zhu, Zhiwei Ai

Proceedings Volume 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 96820X (2016) https://doi.org/10.1117/12.2243410
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

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.

Citation Download Citation

Nengbing Zhu, Bo QI, Ge Ren, Fuyin Zhu, and Zhiwei Ai "Study on the support technology of the light-weighted mirror", Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820X (24 October 2016); https://doi.org/10.1117/12.2243410

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