The design of support structure of mirror subassembly of space remote sensor

Ke-jun Wang; Ji-hong Dong; Wei Li; Quan-feng Guo; Yan-chun Li; Wei-guo Zhao; Hai-ping Wang; Ming Xuan

doi:10.1117/12.2069786

2 September 2014 The design of support structure of mirror subassembly of space remote sensor

Ke-jun Wang, Ji-hong Dong, Wei Li, Quan-feng Guo, Yan-chun Li, Wei-guo Zhao, Hai-ping Wang, Ming Xuan

Proceedings Volume 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 928002 (2014) https://doi.org/10.1117/12.2069786
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

The support structure of large aperture mirror of space remote sensor is the key of the space remote sensor development. In this paper, the size of the large aperture mirror is Φ700mm,which is supported in the back of mirror with 3 points ,the composite structure of ball joint and flexible groove is adopted in support structure which can guarantee the mirror surface satisfy the requirement of optical design under the coupled load of gravity and heat. At the same time, the mirror subassembly should have a high enough stiffness through the reasonable lightweight to ensure the camera in transportation and launch process can withstand severe vibration condition. In order to validate the rationality of the design,the finite element analysis is done to the mirror subassembly,which indicates that the shape error variation of mirror RMS is better than λ/50 and PV is better than λ/10 in the coupling load of gravity and heat,and the first natural frequency of the mirror subassembly is higher than the design requirements. Dynamics calculation results of mirror subassembly consistent with mechanics experiment results；the surface precision of the mirror subassembly obtained from the ZYGO interferometer consistent with the results of finite element analysis and meets the design requirements.

Citation Download Citation

Ke-jun Wang, Ji-hong Dong, Wei Li, Quan-feng Guo, Yan-chun Li, Wei-guo Zhao, Hai-ping Wang, and Ming Xuan "The design of support structure of mirror subassembly of space remote sensor", Proc. SPIE 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 928002 (2 September 2014); https://doi.org/10.1117/12.2069786

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