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Design of mirror subassembly in CO2sounder
Wei, Y.-F.; C. Lin; H. Xue and Y.-Q. Zheng
Source PublicationGuangxue Jingmi Gongcheng/Optics and Precision Engineering
AbstractTo lower the impact of thermal deformation due to gravity, mechanical test, launching environment and linear expansion coefficient difference of the material on mirror surface of the CO2sounder, an analysis was conducted in material selection, structural design and cooperation mode of the mirror subassembly. In the analysis, SiC material was adopted for mirror making, and light weight design was carried out in the mirror body through finite element analysis based on ring-shaped support mode of the mirror; then invar materials with relatively small liner expansion coefficient were selected to design simple and reliable mirror support structure based on stability of the triangle structure and flexible structure of the bipod; the mirror and support structure formed a 1:50 taper surface through epoxy resin adhesive. Then in strict process conditions, precise machining and assembly and mechanical test were conducted in the mirror subassembly. The results show that primary frequencies in the X direction, Y direction and Z direction are respectively 445 Hz, 423 Hz and 444 Hz, approximate to results from the finite element analysis. After such test, the mirror surface shape variation PV is lower than 1/10, with a RMS value lower than 1/30 (=632.8 nm). It proves that structural design and adjustment of the CO2sounder mirror subassembly, which are reasonable, can meet the requirements of imaging spectrometer. 2017, Science Press. All right reserved.
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Document Type期刊论文
Recommended Citation
GB/T 7714
Wei, Y.-F.,C. Lin,H. Xue and Y.-Q. Zheng. Design of mirror subassembly in CO2sounder[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(3).
APA Wei, Y.-F.,C. Lin,&H. Xue and Y.-Q. Zheng.(2017).Design of mirror subassembly in CO2sounder.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(3).
MLA Wei, Y.-F.,et al."Design of mirror subassembly in CO2sounder".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.3(2017).
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