稳定伞作用下对救生伞开伞动载影响研究  

Influence to Life‑Saving Parachute Opening Shock Under Action of Stable Parachute

作　　者：高春鹏 姚裕[2] 官本和 王颖伊 余强 张鑫华 GAO Chunpeng;YAO Yu;GUAN Benhe;WANG Yingyi;YU Qiang;ZHANG Xinhua(AVIC Aerospace Life‑Support Industries,Ltd.,Xiangyang 441003,China;College of Aerospace Engineering,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China)

机构地区：[1]航空工业航宇救生装备有限公司,襄阳441003 [2]南京航空航天大学航空学院,南京210016

出　　处：《南京航空航天大学学报》2023年第2期209-216,共8页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：在救生伞高速空投试验过程中,由于救生伞系统在做非均加速非定常运动的同时又受到假人姿态的影响,常规空投试验获取的开伞动载数据往往离散度较大,无法真实反映救生伞的开伞性能。本文针对救生伞的前置体影响特性,提出了一种采用增加稳定伞的方法对假人自由飞阶段的姿态进行控制,并对不同工况下假人运动过程进行了仿真分析,通过3种工况的空投试验验证研究假人姿态对开伞动载的影响,对开伞时间、开伞速度、开伞动载、假人角速度以及速度损失等试验数据的相关性进行了分析。研究表明假人姿态控制对开伞程序没有影响,与不控制假人姿态试验程序相比更接近于该型救生伞前置体的实际工况。从试验数据结果分析,假人姿态控制后可以改善开伞动载数据的离散性,提高开伞动载试验数据的真实性,最大开伞动载数据可以减小8.9%。In the parachute high-speed airdrop test,the parachute is affected by the attitude of the dummy while doing non-uniform acceleration and unsteady motion.The parachute opening dynamic load data obtained from the conventional airdrop test are often discrete,which can not truly reflect the parachute opening performance.According to the influence characteristics of the front body of the parachute,this paper proposes a method of adding a stable parachute to control the attitude of the dummy in the free flight stage,and the motion process of dummy under different working conditions is simulated and analyzed.By using airdrop test of three working conditions,this paper researches the dummy attitude effect on opening shock of parachute,and analyses the test data to obtain the relationship between dummy attitude and opening time,opening speed,opening shock,opening speed loss of parachute,dummy angular velocity.The results show that dummy attitude control does not affect the parachute opening procedure.Compared with the situation without controlling dummy attitude,it is closer to the actual parachute opening procedure in front body for this type life-saving parachute.Based on the results analysis,it is concluded that dummy attitude control can improve the discreteness and the validity of opening shock data,and the maximum parachute opening shock data can be reduced by 8.9%.

关 键 词：救生伞 空投试验 姿态控制 开伞动载 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]