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Thermal control analysis of a primary mirror for large-aperture telescope
Tan, Yufeng1,2; Wang, Jihong1; Ren, Ge1; Xie, Zongliang1,2; He, Bi1,2
2017
Source PublicationJournal of the Korean Physical Society
ISSN0374-4884
Volume71Issue:1Pages:28-36
AbstractExtraneous thermal loads on the primary mirror of a large-aperture telescope directly influence the optical performance of the telescope through temperature gradients within the mirror and thermal boundary layer at the face sheet. In this paper, we propose a new thermal control system consisting of a flushing and sucking system for eliminating the excessive heat of a primary mirror. First, a 2.8 m-aperture lightweighted primary mirror is fabricated. Second, a thermo-optic analysis using finite element analysis is conducted in natural and forced convection. Finally, the optical performance denoted by Zernike polynomials with and without our proposed thermal control system is evaluated and examined. The comparative results reveal that the image quality of the primary mirror in forced convection is significantly enhanced with obvious reduction of optical surface distortion, thereby demonstrating the effectiveness of our proposed thermal control system.
KeywordLightweighted primary mirror Thermal control Finite element analysis Image quality
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8831
Collection光电工程总体研究室(一室)
Affiliation1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Key Lab Opt Engn, Chengdu 610209, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Tan, Yufeng,Wang, Jihong,Ren, Ge,et al. Thermal control analysis of a primary mirror for large-aperture telescope[J]. Journal of the Korean Physical Society,2017,71(1):28-36.
APA Tan, Yufeng,Wang, Jihong,Ren, Ge,Xie, Zongliang,&He, Bi.(2017).Thermal control analysis of a primary mirror for large-aperture telescope.Journal of the Korean Physical Society,71(1),28-36.
MLA Tan, Yufeng,et al."Thermal control analysis of a primary mirror for large-aperture telescope".Journal of the Korean Physical Society 71.1(2017):28-36.
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