Design and verification of secondary mirror support cylinder with high rigidity in space telescope

Shi-cheng Cui; Zhi-qing Song

doi:10.1117/12.2622871

27 March 2022 Design and verification of secondary mirror support cylinder with high rigidity in space telescope

Shi-cheng Cui, Zhi-qing Song

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121692G (2022) https://doi.org/10.1117/12.2622871
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

This paper designs and verifies a support cylinder of secondary mirror with high rigidity and high thermal stability. Two kinds of configuration schemes (three-wing radial shape and three-wing offset shape) are simulated in detail. And various working conditions (such as modal, gravity load, temperature change) are analyzed. This paper chooses three-wing offset shape as support configuration of secondary mirror after contrasting the natural frequency of component, wavefront change and rigid body displacement of mirror surface. On this basis, the support cylinder of the final state weighs 32kg after size optimization. And the fundamental frequency of the component is up to 204Hz. Finally, the vibration test is conducted. The results indicate that the actual first order frequency of the component is 194.9Hz, which can adapt to the harsh dynamic environment during launch. And it also proves the correctness of simulation and the rationality of design.

Citation Download Citation

Shi-cheng Cui and Zhi-qing Song "Design and verification of secondary mirror support cylinder with high rigidity in space telescope", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121692G (27 March 2022); https://doi.org/10.1117/12.2622871

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KEYWORDS

Mirrors

Space telescopes

Aerospace engineering

Telescopes

Optical instrument design

Space mirrors

Cameras

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