Lightweight design and finite element analysis of primary mirror for the space telescope

Dandan Zhang; Weiyan Li; Qunbo Lv; Yangyang Liu; Xinwen Chen

doi:10.1117/12.2187932

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23 September 2015 Lightweight design and finite element analysis of primary mirror for the space telescope

Dandan Zhang, Weiyan Li, Qunbo Lv, Yangyang Liu, Xinwen Chen

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Proceedings Volume 9626, Optical Systems Design 2015: Optical Design and Engineering VI; 96262C (2015) https://doi.org/10.1117/12.2187932
Event: SPIE Optical Systems Design, 2015, Jena, Germany

Abstract

In order to satisfy the strict requirements of the lightweight ratios and high dimensional stability for space mirror, the design method of lightweight structure and the flexible supporting structure of the primary mirror is proposed. Subsequently, the surface deformations of two different lightweight structures for primary mirror are discussed for analyzing the influence of the mirror weight on its surface. Finally, the finite element models for primary mirror assembly are built for calculating the surface deformation caused by different gravity orientations and various thermal environments. It is proved that the weight, stiffness and surface accuracy of the structure design for primary mirror can meet the engineering requirement.

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Dandan Zhang, Weiyan Li, Qunbo Lv, Yangyang Liu, and Xinwen Chen "Lightweight design and finite element analysis of primary mirror for the space telescope", Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96262C (23 September 2015); https://doi.org/10.1117/12.2187932

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