密封气囊是航天发射场飞船检漏间的关键设备。通过分析飞船检漏间的基本结构组成,进行基于小孔泄漏模型的密封气囊最大允许泄漏量上限指标分析,得出密封气囊理论最大允许漏率值为1200Pa/h;同时开发建立密封气囊泄漏检测系统,并对两根修复前后的密封气囊进行检测试验,试验及工程任务应用结果表明密封气囊最大允许漏率上限指标分析及检测结果准确、可信。 Sealed balloon is the spacecraft spacecraft spacecraft leak detection equipment. Based on the analysis of the basic structure of spacecraft leak detection, the maximum allowable leak rate of the sealed airbag based on the small-hole leakage model was analyzed. The maximum allowable leakage rate of the sealed airbag was 1200Pa / h. At the same time, the development of sealed airbag leak detection System, and two sealed airbags before and after the repair test, test and project tasks application results show that the maximum allowable leakage rate sealed airbags index analysis and test results accurate and credible.