Design and integrated analysis of a flexible support microstructure with a honeycomb sandwich for the optical window of a hypersonic remote sensor

doi:10.3390/s21175919

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	Design and integrated analysis of a flexible support microstructure with a honeycomb sandwich for the optical window of a hypersonic remote sensor
	M. Zhang; Y. Li; Y. Ding; J. Sun and J. Li
	2021
发表期刊	Sensors
ISSN	14248220
卷号	21 期号:17
摘要	In order to reduce the influence of the optical window on the image quality of a hypersonic visible light optical remote sensor, we propose a method of adding a double-layer semicircular honeycomb core microstructure with flexible support of a high temperature elastic alloy between a window glass and a frame to reduce the influence of complex thermal stress on the surface accuracy of the optical window. An equivalent model of a semicircular honeycomb structure was established, the elastic parameters of the semicircular honeycomb sandwich microstructure were derived by an analytical method, and a numerical verification and finite element simulation were carried out. The results show that the equivalent model is in good agreement with the detailed model. The opticalmechanical-thermal integrated simulation analysis of the optical window assembly with flexible supporting microstructure proves that the semicircular honeycomb sandwich flexible supporting structure has a positive effect on stress attenuation of the window glass and ensures the wave aberration accuracy of the transmitted optical path difference of the optical window (PV 0.665 , RMS 0.156 , = 632.8 nm). Combined with the actual optical system, the optical performance of the window assembly under the flexible support structure is verified. The simulation results show that the spatial frequency of the modulation transfer function (MTF) of the optical system after focusing is not less than 0.58 in the range of 063 cycle/mm and the relative decline of MTF is not more than 0.01, which meet the imaging requirements of a remote sensor. The study results show that the proposed metal-based double-layer semicircular honeycomb sandwich flexible support microstructure ensures the imaging quality of the optical window under ultra-high temperature conditions. 2021 by the authors. Licensee MDPI, Basel, Switzerland.
DOI	10.3390/s21175919
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65143
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	M. Zhang,Y. Li,Y. Ding,et al. Design and integrated analysis of a flexible support microstructure with a honeycomb sandwich for the optical window of a hypersonic remote sensor[J]. Sensors,2021,21(17).
APA	M. Zhang,Y. Li,Y. Ding,&J. Sun and J. Li.(2021).Design and integrated analysis of a flexible support microstructure with a honeycomb sandwich for the optical window of a hypersonic remote sensor.Sensors,21(17).
MLA	M. Zhang,et al."Design and integrated analysis of a flexible support microstructure with a honeycomb sandwich for the optical window of a hypersonic remote sensor".Sensors 21.17(2021).

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