Abstract: The datum of propellant on pollution were provided for establishing the documents on the safety of a launching pad.The experiments that the propellant of N 2O 4 and UDMH were exploded were accomplished,and the full and accurate datum were gained on poisonous gas diffusing upon the ground.The advanced equation estimating the weight of remnant propellant and the polluted area on the ground if a liquid rock explodes would be available.

Key words: Liquid rocket propellant;Propellant explosion;Propellant pollution;Unsymmetrical dimethylhydrazine;Nitrogen tetroxide

摘要： 为航天发射场安全技术文件的制定提供推进剂污染方面的数据 ,进行了四氧化二氮 (N2 O4 )和偏二甲肼 (UDMH)爆炸实验研究 ,获得了地面推进剂残余量和毒气扩散的实验测量数据 ,提出的液体火箭爆炸地面上推进剂污染范围和残余量等参数的计算公式可以用于工程估算。

关键词: 液体火箭推进剂;推进剂爆炸;推进剂污染;偏二甲肼;四氧化二氮