卫星热试验舱内污染监测及烘烤出气方法研究  

Study of Contamination Monitoring and Baking Outgassing Methods for Satellite Cabin during Thermal Test

作　　者：于钱[1] 杨东升[1] 臧卫国[1] 院小雪[1] 易忠[1,2] 姜海富[1] 周晶晶[1] 

机构地区：[1]北京卫星环境工程研究所,北京100094 [2]可靠性与环境工程技术重点实验室,北京100094

出　　处：《装备环境工程》2015年第3期29-33,共5页Equipment Environmental Engineering

基　　金：国家自然科学基金(21277014)~~

摘　　要：目的通过卫星热试验过程中采取烘烤出气措施后舱体内部污染状况分析,为卫星试验过程中污染控制工作提供有效方法。方法使用石英晶体微量天平(QCM)及真空度测试系统,对星内污染沉积量与真空度进行实时监测,比较卫星高温静置工况前后沉积量与真空度测试量值的变化。结果整个热试验过程中星内污染出气沉积量为1.8×10-5g/cm2,高温静置工况星内污染出气沉积量为5.67×10-6g/cm2,高温静置工况开始前星内真空度为2.9×10-2Pa,第一次高温循环工况开始时星内真空度为2.3×10-3Pa。结论整个高温静置工况星内污染出气沉积量约占整个热试验过程中的30%,且使得星内真空度由10-2Pa的量级降低到10-3Pa的量级,因此高温静置烘烤措施能够有效去除卫星材料出气污染。Objective To study the contamination condition in satellite cabin after baking operation in the process of thermal test, so as to provide an effective method for contamination control of satellite. Methods The contamination deposition mass and the vacuum pressure were monitored with the quartz crystal microbalance （QCM） and the vacuum test system. The changes of the deposition mass and the vacuum pressure before and after quiescence in high temperature were compared. Results The contamination deposition mass was 1.8×10^-5 g/cm^2 in the process of thermal test and the contamination deposition mass was 5.67×10^-6 g/cm^2 in the process of baking phase. The vacuum pressure was 2.9×10^-2 Pa before the bake-out phase and the vacuum pressure was 2.3× 10^-3 Pa before the first temperature cycle phase. Conclusion The contamination deposition mass in the process of baking phase was about thirty percent of that in the thermal test. The baking method can decrease the vacuum pressure level from 10^-2 Pa to 10^-3 Pa, which can decrease the contamination condition in satellite cabin effectively.

关 键 词：污染量 真空度 烘烤 材料出气 

分 类 号：TJ011[兵器科学与技术—兵器发射理论与技术] V416[航空宇航科学与技术—航空宇航推进理论与工程]