Computation of external heat fluxes on space camera with attitude change in geostationary orbit

doi:10.3788/IRLA201948.0604001

CIOMP OpenIR

	Computation of external heat fluxes on space camera with attitude change in geostationary orbit
	Y.Wu; L.Chen; H.Li; S.Li; Y.Yang
	2019
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	48 期号:6
摘要	In order to obtain accurate external heat fluxes of space camera with attitude change that works in the medium and high earth orbit, a method to calculate its external heat fluxes was proposed. Taking a geostationary space camera as an example, the relative position among the satellite, the sun and the earth was confirmed firstly. And then the camera's attitude was calculated according to its sun imaging mission. Finally, the instantaneous external heat fluxes on space camera were calculated based on its environmental mapping planes after changing attitude and the radiation view factors given by direct integration method. The result shows that under the same orbit condition, the total external heat fluxes of space camera with attitude change decreases dramatically by 372.5 W/m2 and 771.5 W/m2, in March equinox and December solstice respectively. The external heat fluxes on the +X direction plane where optical entrance is located increases by 2 times, and the external heat fluxes on this plane fluctuates wildly from 0 W/m2 to 1 378 W/m2. What's more, these computational results provide a good guidance for camera's thermal design, and this method can as well be applied to calculate the external heat fluxes of spacecraft with multi-dimensional attitude change. 2019, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
关键词	Orbits,Cameras,Earth (planet),Geostationary satellites,Heat flux,Mapping
DOI	10.3788/IRLA201948.0604001
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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/181722/62941
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.Wu,L.Chen,H.Li,et al. Computation of external heat fluxes on space camera with attitude change in geostationary orbit[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2019,48(6).
APA	Y.Wu,L.Chen,H.Li,S.Li,&Y.Yang.(2019).Computation of external heat fluxes on space camera with attitude change in geostationary orbit.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,48(6).
MLA	Y.Wu,et al."Computation of external heat fluxes on space camera with attitude change in geostationary orbit".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 48.6(2019).

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