Research of wind loading on optical window for airborne optoelectronic equipment based on CFD

Xiaoguo Deng; Xiaoxu Yang; Gang Li; Xiaoqiang Zheng

doi:10.1117/12.2076597

19 February 2015 Research of wind loading on optical window for airborne optoelectronic equipment based on CFD

Xiaoguo Deng, Xiaoxu Yang, Gang Li, Xiaoqiang Zheng

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94492G (2015) https://doi.org/10.1117/12.2076597
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

In order to improve the reliability and working performance of the optical window for airborne optoelectronic equipment, we conduct the aerodynamic analysis of airborne optoelectronic equipment under different flight speed, and get the aerodynamic load distribution of optical window under three different typical flight speed. By building the model of the optical window and simulating the model with the method of CFD, the deformation and stress caused by aerodynamic loading under different thickness of the optical window have been got. The results shows that the thickness of the optical window at 10mm could best meet the requirements of structural strength and quality. Then we analysis the impact of the deformation of the optical window on the imaging quality of the optical system. The deformation of the optical window is very tiny, and it is deformed from the flat into a spherical whose radius is very large. The MTF of the optical system after deformation are basically the same as its MTF before deformation. Thus, the impact of the deformation of the optical window on the imaging quality of the optical system can be ignored. The results of the analysis provide important reference for the design of the optical window for airborne optoelectronic equipment.

Citation Download Citation

Xiaoguo Deng, Xiaoxu Yang, Gang Li, and Xiaoqiang Zheng "Research of wind loading on optical window for airborne optoelectronic equipment based on CFD", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94492G (19 February 2015); https://doi.org/10.1117/12.2076597

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KEYWORDS

Aerodynamics

Optoelectronics

Modulation transfer functions

Imaging systems

Analytical research

Optoelectronic devices

Telescopes

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