大型降落伞拉直过程中的抽打现象分析  

Analysis of the Phenomenon of Bull Whipping in the Deployment Process of Large Parachute

作　　者：王海涛[1] 秦子增[1] 宋旭民[2] 郭鹏[1] 陶午沙 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073 [2]装备指挥技术学院重点实验室,北京101416 [3]总装备部武器装备论证中心,北京100101

出　　处：《国防科技大学学报》2010年第5期34-38,共5页Journal of National University of Defense Technology

基　　金：国家部委资助项目

摘　　要：针对某大型降落伞回收系统主伞拉直过程中出现的抽打现象进行了分析,根据其拉直过程的特点将其划分为五个阶段,分别建立了各阶段的实体模型和约束模型,通过模型的组合建立了各阶段的多体动力学模型,将各阶段模型连接进一步组成该型号大型降落伞拉直全过程的动力学模型。仿真分析了该型号大型降落伞出现抽打现象时的伞衣位形、顶部伞衣速度、伞绳和伞衣的偏离距离以及张力的变化,总结了抽打现象形成时的一些特征数据,分析结果可为大型降落伞设计、改进、使用等提供参考。The bull whipping phenomenon in the deployment process of a large parachute was analyzed.Based on its character,the dynamic model of the whole process was built in five stages.At first,the basic model and restriction model were built respectively.Through their combination,the dynamic model of multibody systems of every stage was built.Then by connecting the dynamic model of five stages,the dynamic model of the entirely deployment process was accomplished.Through analyzing the results of simulation,the canopy displacement and shape,the velocity of top segment canopy,departure distance and tensile force distributing of canopy and lines when forming the bull whipping phenomenon are educed,some important and character data of the bull whipping phenomenon are summarized.The conclusion can provide reference for the engineering design department to designing,improving and using the large parachute.

关 键 词：抽打 降落伞 拉直 伞衣 空投试验 

分 类 号：V475.9[航空宇航科学与技术—飞行器设计]