Ultra-lightweight design of 610 mm circular primary mirror supported in centre

	Ultra-lightweight design of 610 mm circular primary mirror supported in centre
	Bao, Q.-H.; W. Sha; C.-Z. Chen and J.-Y. Ren
	2016
发表期刊	Guangzi Xuebao/Acta Photonica Sinica
卷号	45 期号:9
摘要	A circular primary mirror of an off-axis three mirror anastigmat space camera with an aperture of 610 mm was ultra-lightweight designed to meet the requirement of designing lighter and better satellite cameras. By choosing the back-centre-single point supporting way, using the variable rib thickness and the variable rib height sturctural style and combining with the integrated optimization design method, the mirror was designed with a weight of only 6.23 kg and the surface density about 21.3 kg/m2. The support structure for the mirror was designed and the static and dynamic performances of the mirror subassembly were simulated. The simulation results show that the surface figure error (RMS value) is less than 6nm when the mirror subassembly is under the load condition of gravity in three different directions and is less than 1nm when the temperature variation is within 4. The first-order natural frequency of the mirror subassembly is 112 Hz. The results of frequency response analysis present that the maximum stress in the screw hole of the flexible structure is below the yield strength of its material. All performance indexes of the ultra-lightweight mirror designed in this paper meet the requirements of design and the maximum aperture of the mirror which can be supported by single point in centre is 610 mm. The design proposes a method and reference to ultra-lightweight design of same type mirrors. 2016, Science Press. All right reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56854
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Bao, Q.-H.,W. Sha,C.-Z. Chen and J.-Y. Ren. Ultra-lightweight design of 610 mm circular primary mirror supported in centre[J]. Guangzi Xuebao/Acta Photonica Sinica,2016,45(9).
APA	Bao, Q.-H.,W. Sha,&C.-Z. Chen and J.-Y. Ren.(2016).Ultra-lightweight design of 610 mm circular primary mirror supported in centre.Guangzi Xuebao/Acta Photonica Sinica,45(9).
MLA	Bao, Q.-H.,et al."Ultra-lightweight design of 610 mm circular primary mirror supported in centre".Guangzi Xuebao/Acta Photonica Sinica 45.9(2016).

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