降落伞拉直过程的三维仿真分析

3D Simulation Analysis of Deployment Process on Parachute

针对某载人飞船降落伞回收系统的主伞拉直过程,基于多体系统动力学理论,建立了由一系列刚体和质点通过弹性约束组成的三维多体动力学模型。首先,在空投试验条件下,验证了该模型的正确性和仿真结果的有效性;其次,模拟了不同风速不同风向条件下的拉直过程,指出侧向风影响最强,并分析了此规律的动力学机理。对载人飞船降落伞系统拉直过程的仿真研究有助于提高对降落伞拉直过程机理的理解。

Based on the multi-body system dynamic theory,the 3D multi-body system dynamic model of parachute deployment process for manned spacecraft,which composed of serious rigid bodies and mass points by elasticity restriction,was developed.Firstly,comparisons between modeling results and airdrop test data showed that the developed model was accurate and effective.Secondly,the deployment process under different conditions of wind direction and velocities had been simulated,and indicated the rule that the side-wind was the strongest influencing factors.At the same time,the dynamics mechanism of this rule had been analyzed.The research work on parachute deployment for manned spacecraft was valuable to understand the mechanism of parachute deployment process.