航天器密封舱压力模拟控制方法研究  

Pressure Simulation Control Technology of Spacecraft Sealed Module

作　　者：武越[1] 许忠旭[1] 裴一飞[1] 

机构地区：[1]北京卫星环境工程研究所,北京100094

出　　处：《真空科学与技术学报》2014年第10期1076-1080,共5页Chinese Journal of Vacuum Science and Technology

摘　　要：带有密封舱段的航天器进行热平衡试验时,为了模拟空间微重力下的气体换热方式,需要对密封舱内的压力进行调节与控制。文章研究了航天器密封舱压力模拟控制的特征,根据这些特征,采用特殊的方法解决了真空低温环境下远距离真空压力柔性管道的密封与绝热、密封舱内压力准确测量、密封舱内压力连续控制与调节、密封舱内环境状况分析与监测、快速抽除与收集密封舱中大量沸点较高的可凝性蒸汽等难题,成功地对大型航天器密封舱在微重力状态下的气体换热情况进行了地面模拟,使密封舱内的仪器设备经受了考核。The gas heat transfer mode, in the well-sealed module of spacecraft in an environment of microgravity, low temperature and pressure, was experimentally simulated on ground in newly-developed methods. To meet the stringent re- quirements on pressure control in the sealed module, a series of tough problems were solved, including but not limited to the accurately evaluating, continuously controlling and regulating the pressure, rapidly collecting and removing a large quantity of condensable vapors with high boiling point, accurately monitoring and analyzing the interior environment, and effective thermal insulation and sealing of the long flexible vacuum pipe in an environment of low pressure and low tem- perature, etc. All these solutions played an important role in the success of the thermal balancing test of the large sealed module of spacecraft on ground. Moreover, the instnunents and equipment, installed in the sealed module, remained intact after doing a good job in the ground simulation.

关 键 词：航天器 热平衡试验 密封舱 压力 控制 

分 类 号：V41[航空宇航科学与技术—航空宇航推进理论与工程]