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Proceedings Paper

Design and analysis of micro stress flexible support structure of reflector in all day star tracker
Author(s): Yang Liu; Su Chen; Lingguang Wang; Bo Geng; Hu Wang; Jie Liu
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Paper Abstract

To reduce the surface deformation of a star tracker reflector in a complex and execrable environment, a micro stress flexible support structure was designed according to the circular optical reflector subassembly. By defining the thickness, width and radius as design variables, the flexible hinge in an circular reflector subassembly was optimized. Then, the surface figure precision, structural strength and dynamic stiffness of the reflector subassembly in the thermal-structural coupling state were analyzed with the finite element method. Simulation results show that the natural frequency of the reflector is enough, which has a sufficiently high dynamic stiffness. Both surface precision RMS of the reflector (8.34nm, 9.26nm) have reached the index requirements of the optical system (λ/10, λ=632.8nm) under gravity and uniform temperature change from -20℃ to 65℃. The results show that the design for the micro stress flexible support structure is reasonable and feasible, and achieves the design goal.

Paper Details

Date Published: 28 February 2017
PDF: 9 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102562I (28 February 2017); doi: 10.1117/12.2257424
Show Author Affiliations
Yang Liu, Xi’an Institute of Optics and Precision Mechanics (China)
Su Chen, Xi'an Institute of Optics and Precision Mechanics (China)
Lingguang Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Bo Geng, Xi'an Institute of Optics and Precision Mechanics (China)
Hu Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Jie Liu, Xi’an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 10256:
Second International Conference on Photonics and Optical Engineering
Chunmin Zhang; Anand Asundi, Editor(s)

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