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Proceedings Paper

Design and analysis of supporting structure between the primary mirror and the secondary mirror on a space telescope
Author(s): Chenjie Wang; Wenyi Chai; Liangjie Feng; Wengang Yang; Wei Wang; Xuewu Fan
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Paper Abstract

Mechanical stability is a significant segment for an on-axis space telescope to assure its assembly accuracy as well as the image quality in the rigorous space environment, supporting structure between the primary mirror and the secondary mirror as a main structure of the on-axis space telescope must be designed reasonably to meet the mission requirements of the space telescope. Meanwhile, in view of the limitation of the satellite launching cost, it is necessary to reduce the weight and power compensation during the supporting structure design based on the satisfaction of telescope performance. Two types of supporting structure for a space telescope are designed, one is three-tripod structure which has three tripods located on the optical bench to support the secondary mirror assemblies and keep the distance between the primary mirror and the secondary mirror, the other is barrel supporting structure which includes a tube and a secondary mirror support with four spider struts. To compare the mechanical performance and launching cost of the two kinds of supporting structure, both structural and thermal analysis model are established. The analysis results indicates that the three-tripod support is lighter, has better mechanical performance and needs less power compensation than the barrel support.

Paper Details

Date Published: 8 October 2015
PDF: 6 pages
Proc. SPIE 9678, AOPC 2015: Telescope and Space Optical Instrumentation, 96780W (8 October 2015); doi: 10.1117/12.2199672
Show Author Affiliations
Chenjie Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Wenyi Chai, Xi’an Institute of Optics and Precision Mechanics (China)
Liangjie Feng, Xi’an Institute of Optics and Precision Mechanics (China)
Wengang Yang, Xi’an Institute of Optics and Precision Mechanics (China)
Wei Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Xuewu Fan, Xi’an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 9678:
AOPC 2015: Telescope and Space Optical Instrumentation
Bin Xiangli; Dae Wook Kim; Suijian Xue, Editor(s)

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