火星气囊气体发生器充气过程稳压仿真研究  

Research on Inflation Pressure Stabilization/Maintenance of Gas Generator for Mars Lander Airbag

作　　者：张丽梅[1] 郝芳[1] 

机构地区：[1]北京空间机电研究所,北京100076

出　　处：《航天返回与遥感》2012年第6期30-38,共9页Spacecraft Recovery & Remote Sensing

摘　　要：文章对低温和常温环境下的气囊稳压充气过程的参数进行了仿真计算。主要分析计算了气囊内外壁的对流换热、囊内气体与囊壁间辐射以及水蒸气液化等传热方式的传热量。同时,计算了在不同环境温度下,气囊内气体温度、充气质量以及充气质量流率随时间的变化关系。分析结果可以为工程研制提供参考和数据支持。Pressure stabilization parameters of gas generator in cold and normal environments were calculated. Convective heat transfer both inside and outside the airbag, molecular gas radiation heat transfer, and water vapor phase-change heat transfer a chiefly researched in this paper. The relationships of gas temperature, mass of exhaust gas and gas generator mass flow rate with time changing has been obtained. The analysis can provide the data to help project design.

关 键 词：气体发生器 气囊 稳压参数 传热分析 火星着陆 

分 类 号：V244.216[航空宇航科学与技术—飞行器设计]