折叠降落伞展开过程研究

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。

A Study on the Opening Process of Folded Parachute

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.