| 航天器单机机箱内部压力变化规律探析 |
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| 引用本文： | 王志浩,冯伟泉,周岭,徐焱林,刘业楠,聂翔宇,张永泰,侯清锋.航天器单机机箱内部压力变化规律探析[J].航天器环境工程,2013,30(2):176-178. |
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| 作者姓名： | 王志浩 冯伟泉 周岭 徐焱林 刘业楠 聂翔宇 张永泰 侯清锋 |
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| 作者单位： | 1.可靠性与环境工程技术重点实验室, 北京 100094 |
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| 基金项目： | 中国航天科技集团公司共性工艺课题 |
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| 摘 要： | 航天电子产品在低气压环境下容易发生放电，导致电磁干扰、产品损坏甚至灾难性事故。为确定单机机箱内部压力在轨变化趋势和特点，文章以航天器典型单机机箱为研究对象，首先计算分析了机箱内部压力随时间的变化规律；然后利用特殊工装实际测量了置于真空容器内机箱的内部压力变化。理论计算结果与试验实测结果符合性较好。该研究能够为单机机箱设计、低气压放电防护及评估提供依据和指导。
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| 关 键 词： | 单机机箱 压力变化 低气压放电 计算分析 试验研究 |
Experimental study ofpressure changes inside the unit cage ofspacecraft electronic products |
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| Wang Zhihao,Feng Weiquan,Zhou Ling,Xu Yanlin,Liu Ye''nan,Nie Xiangyu,Zhang Yongtai and Hou Qingfeng.Experimental study ofpressure changes inside the unit cage ofspacecraft electronic products[J].Spacecraft Environment Engineering,2013,30(2):176-178. |
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| Authors: | Wang Zhihao Feng Weiquan Zhou Ling Xu Yanlin Liu Ye'nan Nie Xiangyu Zhang Yongtai and Hou Qingfeng |
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| Affiliation: | 1.Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China2.Science and Technology on Reliability and Environmental Engineering Laboratory, Beijing 100094, China3.Beijing Institute of Spacecraft System Engineering, Beijing 100094, China4.Beijing Institute of Control Engineering, Beijing 100190, China |
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| Abstract: | Discharge could easily happen in a low pressure environment for electronic products onboard a spacecraft, to induce electromagnetic interference, product damages, and even catastrophic accidents. To determine the changes and the pressure variations inside a unit case, the pressure is analyzed and calculated. Then, using a special self-developed device, the pressure in the unit case is measured in a vacuum chamber. The calculation results and the measuring results are in good agreement, which may provide some guidance for the design of the unit case, the protection against low-pressure discharge and the evaluation. |
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| Keywords: | unit case pressure changing low-pressure discharge numerical analysis experimental study |
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