论文部分内容阅读
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 analyze the internal pollution status of cabin after taking the bake out gas during the satellite thermal experiment, and to provide an effective method for the pollution control in the satellite experiment. Methods Quartz crystal microbalance (QCM) and vacuum test system were used to monitor the deposition and vacuum degree in the satellite. The changes of deposition and vacuum test before and after satellite high temperature were compared. Results During the whole heat test, the amount of outgas in the asteroid was 1.8 × 10-5g / cm2, and the amount of the outgas in the astern was 5.67 × 10-6g / cm2. The degree of vacuum of 2.9 × 10-2Pa, the first high-temperature cycle conditions at the beginning of the vacuum degree of astronomy 2.3 × 10-3Pa. CONCLUSIONS The total amount of pollutant outgassing within the entire high temperature static operating condition accounts for about 30% of the total heat test, and the asteroid vacuum is reduced from the order of 10-2Pa to the order of 10-3Pa. Therefore, Baking measures can effectively remove the air pollution of satellite materials.