摘要
燃气射流是影响多管火箭振动、起始扰动和射击密集度的因素之一,分析燃气射流冲击力对多管火箭动态特性的影响为提高多管火箭射击密集度提供思路。应用多体系统传递矩阵法,建立了考虑火箭燃气射流对发射装置冲击效应的多管火箭发射动力学模型,推导了考虑燃气射流冲击力的多管火箭动力响应分析的动力学方程,形成了考虑燃气射流冲击力的多管火箭动力学仿真系统。计算分析了不同火箭燃气射流冲击力下的火箭炮动力响应,火箭弹膛内运动、起始扰动和密集度,表明燃气射流冲击力对火箭炮动力响应、火箭弹起始扰动和密集度有一定的影响,对多管火箭设计具有参考价值。
The jet flow is one of influence factors on vibration, initial disturbance and firing dispersion of a multiple launch rocket system （MLRS）. The analysis for influence of jet flow impact force on dynamic characteristics of a MLRS can provide a thought to improve firing dispersion. The launch dynamic model of a MLRS was presented using transfer matrix method of muhibody system considering influence of jet flow on launcher. Considering the jet flow impact force, the dynamic equations for analyzing dynamic response of a MLRS were derived and a launch dynamic simulation system was established. The dynamic response, rocket motion pattern, initial disturbance and firing dispersion of a MLRS under different jet flow impact forces were computed. The simulation results showed that the jet flow impact force has a certain influence on the dynamic response, rocket motion pattern, initial disturbance and firing dispersion of a MLRS. The results provided a reference for design of MLRS.
出处
《振动与冲击》
EI
CSCD
北大核心
2012年第21期143-145,151,共4页
Journal of Vibration and Shock
基金
国家自然科学基金(11102089)
新世纪优秀人才支持计划资助(NCET-10-0075)
南京理工大学自主科研专项计划资助项目(2011ZDJH11)
江苏省六大人才高峰项目
关键词
多管火箭
发射动力学
燃气射流
动态响应
muhiple launch rocket system （MLRS）
launch dynamics
jet flow
dynamic behavior
