货物空投系统自动脱离锁成功脱离概率分析

定量研究了空投系统某型自动脱离锁在较大地面风速条件下的成功脱离概率。由系统力学特性分析确定影响脱离锁工作的主要因素;基于着陆阶段系统动力学分析,建立脱离锁成功脱离概率分析模型;采用均匀分布和正态分布两种随机模型分析成功脱离概率;引入安全脱离风速、安全设计开锁力等指标指导脱离锁设计。分析结果表明某型脱离锁成功脱离概率随设计开锁力增加而提高,在一定风速范围内随风速增加而降低。分析方法为空投系统脱离锁设计提供了理论依据,可用于空投行动的辅助决策,提供空投成功率。

Probability Analysis on Parachute Ground Release for Cargo Airdrop System

The probability that a parachute ground release system works successfully under different ground wind conditions is quantitatively analyzed.Primary factors which contribute to the success of release work are deduced by analyzing the mechanical properties of the entire airdrop system.Based on a dynamic analysis of the parachute system during landing,a numerical model to evaluate the probability of successful release is established.Uniform distribution and Gauss distribution are utilized to obtain the probability of Success.Safe ground wind speed and safe design release force are defined as the criteria to determine whether the release succeeds or not.The results show that the probability of successful release increases with the increase of design release force,and decreases with the increase of ground wind speeds within a certain range.This research provides a theoretical method for the design of parachute ground release and reference for airdrop mission decisionmaking.