Material selection and design of beryllium-aluminum alloy mirror assembly for large-diameter space infrared camera

doi:10.3788/IRLA20190390

CIOMP OpenIR

	Material selection and design of beryllium-aluminum alloy mirror assembly for large-diameter space infrared camera
	Y. Zhai,H. Jiang,G. Mei and F. Jiang
	2020
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	49 期号:6
摘要	In order to ensure that the space infrared camera obtained a light and reliable sweeping head, and the mirrors had good surface accuracy and a high first-order natural frequency for the space sweeping camera system, the structure of sweeping part was studied in a targeted manner. The beryllium-aluminum alloy material was selected as the 750 mm diameter main mirror material, the flexible support structure of the titanium alloy material was selected as the support structure, and installed in the main mirror chamber of the berylliumaluminum alloy material. It included a secondary mirror assembly, a secondary mirror support part and a lightshielding cylinder. The total weight of the entire swinging part was 17.5 kg. The finite element method was used to simulate the mirror assembly under the condition of force and heat coupling. The results show that the maximum surface error RMS of the mirror is 27.04 nm, which is no less than /20 (=632.8 nm) in the full aperture range requirements. The first-order resonant frequency of the oscillating portion is 122 Hz, which reserves a large bandwidth for the control system. The mechanical test results of the solid model are close to those of the finite element analysis, indicating that the overall design requirements for the sweeping part are met. 2020, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
DOI	10.3788/IRLA20190390
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收录类别	EI
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64664
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Zhai,H. Jiang,G. Mei and F. Jiang. Material selection and design of beryllium-aluminum alloy mirror assembly for large-diameter space infrared camera[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2020,49(6).
APA	Y. Zhai,H. Jiang,G. Mei and F. Jiang.(2020).Material selection and design of beryllium-aluminum alloy mirror assembly for large-diameter space infrared camera.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,49(6).
MLA	Y. Zhai,H. Jiang,G. Mei and F. Jiang."Material selection and design of beryllium-aluminum alloy mirror assembly for large-diameter space infrared camera".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 49.6(2020).

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