摘要
上一篇提出了基本假设条件,建立了坐标系和动力学方程组,分析了火箭弹推力和燃气射流冲击力。多管火箭炮发射时受力复杂,除火箭弹推力和燃气射流冲击力外,还有火箭弹闭锁力、定向钮与导向槽的正压力和摩擦力、前后定心部与定向器的正压力和摩擦力、回转机力、高低机力、车轮悬挂和千斤顶的力、重力等。将这些力转化为广义力供分析计算。叙述了起落部分质量和转动惯量在发射过程中不断改变的状况,给出了因火箭弹逐一发射而变化的算法,为分析计算火箭弹离轨时刻的空间姿态和发射架振动提供了理论模型。
This thesis puts forward basic tentative condition to found reference frame and dynamics equations, and analyses rocket ammunition thrust and the burning gas force. When multiple rocket system is lunching, it is the complicated forces. In order to analyse and calculate, this thesis detailedly describes to them, which are transformecd broad sense forces. They have besides rocket am.munition thrust and the burning gas force, closedown force of rocket ammunition, positive stress and friction of directional button acting on oriented groove, positive stress and friction of fore-and-aft fixed part acting on lunching tube, rotating parts force, elevating mechanism force, travelling buffer force, jack force, gravity etc. It still describes variable athletics of mass and moment of inertia to rocket launcher, and advances the variational arithmetic of rocket ammunition seriatim launchs in launch process. It gives us a theoretics model to analyse and calculate the spatial condition of the ammunitions and vibration of rocket launcher at the moment of rocket ammunition leaving.
出处
《火炮发射与控制学报》
北大核心
2011年第2期16-20,共5页
Journal of Gun Launch & Control
关键词
基础力学
多管火箭炮
发射动力学
火箭弹受力
变质量起落部分
basic mechanics
multiple rocket system
launch dynamics
rocket ammunition acting on force
changed mass elevating parts
