摘要
为更好地从机理上研究折叠降落伞的展开过程,文章首先采用基于初始矩阵修正的直接折叠法建立了降落伞的折叠模型,并对该模型使用任意拉格朗日-欧拉法模拟了无限质量情况下不同风速、不同引导伞作用下开伞情况。计算结果证明了引导伞经验设计的有效性,但同时发现个别情况下经验设计过于粗糙,容易导致出现不良充气状态。文章的研究内容对降落伞设计、优化具有指导意义。
In order to study the deployment mechanism of folded parachute,a direct folding method based on IMM correction is used to establish the folded parachute model.Then the Arbitary Lagrange Euler(ALE)method is used to simulate the folded parachute opening in an infinite mass situation.The opening processes with different wind speeds and different pilot parachutes are obtained.The results verify the effectiveness of the pilot parachute based on experience design.But the experience design is coarse in some situations,and leads to adverse inflation.This work could provide guidance to the design or optimization of parachute.
出处
《航天返回与遥感》
2012年第2期1-6,共6页
Spacecraft Recovery & Remote Sensing
基金
国家自然科学基金(No.11172137)
关键词
任意拉格朗日-欧拉法
折叠
引导伞
降落伞
Arbitrary Lagrange Euler(ALE) method
folding
pilot parachute
parachute
作者简介
程涵,男,1984年生,南京航空航天大学航空宇航学院工程力学专业,博士研究生,研究方向为柔性织物流固耦合。