国防科技大学学报Issue(6)：88-92,5.DOI:10.11887/j.cn.201406016
导弹尾罩分离运动不确定性分析
Uncertainty analysis of the rocket trail cover separation
摘要
Abstract
To assess the risk of the rocket trail cover separation movement,the multi-body dynamic model in separation process was established according to the Kane's equation,and the collision checking model based on the relative location estimation of the key point-collision boundary was built.The Monte Carlo method and the Morris screening method were used to analysis the uncertainty of the separation process when the input parameters had random deviations.The dispersion characteristics of the separation motion state were got from the Monte Carlo method and the sensitivity of each parameter was ranked by using the Morris screening method.Results show that the trail cover separation solutions possess high reliability,which can satisfy the security requirements in the case of the input parameters with deviations.Among all the input parameters,wind interference and the thrust deviation of the thruster from ejection pistons has greatly influenced the distance of drop points,and the horizontal distance between the rocket and the trail cover has been greatly affected by the wind and the out-canister velocity under the circumstances of ignition.关键词
尾罩分离/不确定性分析/蒙特卡洛法/Morris 筛选法Key words
trail cover separation/uncertainty analysis/Monte Carlo method/Morris screening method分类
航空航天引用本文复制引用
贾如岩,王涛,江振宇,胡凡,张为华..导弹尾罩分离运动不确定性分析[J].国防科技大学学报,2014,(6):88-92,5.基金项目
国家自然科学基金资助项目 （）
