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Proceedings Paper

The influence of temperature and pressure on primary mirror surface figure and image quality of the 1.2m colorful Schlieren system
Author(s): Songbo Xu; Peng Wang; Lei Chen; Jing Wang; Yong-jun Xie
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Paper Abstract

In this paper, a colorful schlieren system without any protecting windows was introduced which results in that the 1.2m primary mirror would directly be confronted with the pressure and temperature variation from the wind tunnel test. To achieve a good schlieren image under the wind tunnel test working condition of a wide temperature fluctuation range (-10° to 50°) as well as a pressure (2kPa), a new flexible support method of the primary mirror was strategically designed. A finite element model of the primary mirror combined with its supporting structures was built up to approach the surface figure of the primary mirror under the complex working conditions as gravity, temperature variation, and pressure. The schlieren images due to the change of the primary mirror surface figure were simulated by Light-tools software. It was found that the temperature changing and pressure would lead to the variation of the surface figure of the primary mirror surface figure and therefore, results in the changing of the quality of simulated schlieren images.

Paper Details

Date Published: 28 February 2017
PDF: 9 pages
Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102565D (28 February 2017); doi: 10.1117/12.2247935
Show Author Affiliations
Songbo Xu, Xi’an Institute of Optics and Precision Mechanics (China)
Peng Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Lei Chen, China Aerodynamics Research and Development Ctr. (China)
Jing Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Yong-jun Xie, 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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