“天问一号”探测器降落伞强度空投试验  

Parachute Strength Airdrop Test of Tianwen-1 Detector Parachute

作　　者：刘威 朱维亮[1] 李烨 房冠辉 张兴宇[1,2] 鲁媛媛 李健[1,2] LIU Wei;ZHU Weiliang;LI Ye;FANG Guanhui;ZHANG Xingyu;LU Yuanyuan;LI Jian(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Laboratory of Aerospcae Entry Descent and Landing Technology,China Aerospace Science and Technology Corporation,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]航天科技集团航天进入减速与着陆技术重点实验室,北京100094

出　　处：《航天返回与遥感》2022年第3期12-24,共13页Spacecraft Recovery & Remote Sensing

基　　金：国家重大科技专项工程。

摘　　要：“天问一号”降落伞的开伞过程是典型的无限质量开伞过程,强度试验时必须模拟无限质量开伞条件。文章在综合比较各种试验方案后,选择了最适合中国国情的直升机低空空投试验方案。通过增加空投模型的质量,实现200m^(2)降落伞在低空稠密大气环境下的无限质量开伞条件。通过降落伞充气模型的建立与修正,实现开伞力的精确预计。降落伞强度试验共实施8次,试验结果表明,降落伞的开伞过程符合无限质量开伞特征,验证安全系数不小于1.46,降落伞强度满足飞行任务要求。Tianwen-1 Mars parachute inflation is typical infinite mass inflation,and parachute strength test must simulate the infinite mass parachute opening condition.After comparing various methods,the helicopter low altitude airdrop test is selected,which is appropriate for China aerospace.By increasing the model mass,the 200m^(2) parachute infinite mass inflation condition was achieved.By establishing inflation model,the accurate prediction of parachute inflation load was realized.8 working conditions of parachute strength airdrop test are conducted,and test results conforms to characteristic of infinite mass inflation,the safety factor of parachute strength greater than 1.46.

关 键 词：空投试验 火星 降落伞 试验设计 天问一号 

分 类 号：V553.23[航空宇航科学与技术—人机与环境工程]