Calculation of external heat fluxes on space camera with two-dimensional changing attitudes in sun-synchronous orbit

doi:10.3788/IRLA201847.0917008

CIOMP OpenIR

	Calculation of external heat fluxes on space camera with two-dimensional changing attitudes in sun-synchronous orbit
	Li, Shijun; Chen, Liheng; Feng, Wentian; Wu, Yuhua
	2018
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	47 期号:9
摘要	In order to get accurate data of external heat fluxes on space camera with two-dimensional changing attitudes, a method was proposed to calculate the external heat fluxes of space camera with two- dimensional changing attitudes in J2000 coordinate system. First, in J2000 coordinate system positions of space camera, position and radiation intensity of sun were calculated. Second, according to the working characteristics of the space camera whose visual axis always points to the sun and the position of the sun, its two-dimensional attitude angles were calculated under extreme conditions. Then, based on the obtained attitude angles, the attitude transformation matrix was calculated. Finally, in one orbital period external heat fluxes of unchanging attitude and two-dimensional changing attitudes were calculated with Matlab programming. The external heat fluxes of this paper were in good agreement with I-deas/TMG software. Compared with the unchanging attitude camera, external heat fluxes of the two-dimensional changing atitudes camera will have a great change, especially for the -Y surface where optical entrance is located. The solar radiation heat fluxes fluctuation range of -Y surface is 0 -1 394 W/m2. The obtained attitude angles provide an important reference for the adjustment of the attitude for the thermal simulation model. According to the data of the external heat flux with changing attitudes, it can be seen that the external heat fluxes of the -Z surface is smallest, and the maximum average period external heat fluxes of -Z surface is less than 4 W/m2. In addition, the external heat fluxes of the X surfaces and +Y surface are smaller, and the maximum average period external heat fluxes of X surfaces are less than 80 W/m2, and the maximum average period external heat fluxes of +Y surface are less than 110 W/m2. In practical application, the external heat fluxes of X surfaces and +Y surface will be smaller due to the obstruction of the satellite platform. Therefore, the -Z surface, X surfaces and +Y surface can be used as heat dissipation surfaces, which provides a good guide for thermal design work. 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
关键词	Heat flux Cameras Linear transformations MATLAB Orbits
DOI	10.3788/IRLA201847.0917008
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60586
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	Li, Shijun,Chen, Liheng,Feng, Wentian,et al. Calculation of external heat fluxes on space camera with two-dimensional changing attitudes in sun-synchronous orbit[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2018,47(9).
APA	Li, Shijun,Chen, Liheng,Feng, Wentian,&Wu, Yuhua.(2018).Calculation of external heat fluxes on space camera with two-dimensional changing attitudes in sun-synchronous orbit.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,47(9).
MLA	Li, Shijun,et al."Calculation of external heat fluxes on space camera with two-dimensional changing attitudes in sun-synchronous orbit".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 47.9(2018).

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