Anti-frost structure for the cryogenic shield of spacecraft

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	Anti-frost structure for the cryogenic shield of spacecraft
	Chen, Shuping 2; Tan, Fengguang 2; Wu, Rui 2; Wu, Beimin 2; Xie, Fushou 2; Wen, Yonggang 1; Chen, Guangqi 1
刊名	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
	2012-04-01
卷号	41 期号:4 页码:853-857
关键词	Atmospheric temperature Cryogenics Frost protection Infrared radiation Nitrogen Refrigerants Spacecraft Anti frosts Atmospheric environment Filling process Filling speed Insulation materials Low temperatures Protection gas Protection layers
ISSN号	10072276
英文摘要	The cryogenic shield of spacecraft is a device used to wrap the high-speed spacecraft up based on phase-change refrigeration. It can reduce the infrared radiation of the spacecraft flying in space. Before launching, the cryogenic shield needs to be filled up with low-temperature refrigerant. Without a frost prevention device, the filling process of liquid low-temperature refrigerant on the ground would cause severe frosting on the surface of the cryogenic shield so as to weaken its resistance to infrared radiation. An anti-frost structure was devised, which were made up by nitrogen protection layer and thermal insulation. For nitrogen does not easily congeal at low-temperature, it can protect the cryogenic shield from frosting. And the thermal insulation made of insulation materials has large thermal resistance, so it can make sure that the outside temperature of thermal insulation is above the local dew point and the vapor in the atmospheric environment will not congeal on the outside surface of the thermal insulation. Meanwhile the function relation of filling speed of protection gas with time was deduced. The experiment shows that there is no frost on the surface of the cryogenic shield and the thermal insulation, and the anti-frost structure is effective.
语种	中文
出版者	Chinese Society of Astronautics
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111348]
专题	石油化工学院
作者单位	1.Lanzhou Institute of Space Technical Physics, Lanzhou 730000, China 2.School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Chen, Shuping,Tan, Fengguang,Wu, Rui,et al. Anti-frost structure for the cryogenic shield of spacecraft[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2012,41(4):853-857.
APA	Chen, Shuping.,Tan, Fengguang.,Wu, Rui.,Wu, Beimin.,Xie, Fushou.,...&Chen, Guangqi.(2012).Anti-frost structure for the cryogenic shield of spacecraft.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,41(4),853-857.
MLA	Chen, Shuping,et al."Anti-frost structure for the cryogenic shield of spacecraft".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 41.4(2012):853-857.