弹道学报2016，Vol.28Issue(4)：12-16,29,6.
某弹箭转速-攻角闭锁数值仿真及分析
Numerical Simulation and Analysis for Spin-Yaw Lock-In of a Missile
摘要
Abstract
In order to study the mechanism and law of spin-yaw lock-in,the equations of motion for a rota-tionally symmetric missile were derived based on the fact that spin-yaw lock-in can occur with a side moment varying with the roll angle between the angle of attack plane and a fixed plane. Taking a missile for an example,the effects of different parameters and initial conditions,including initial spin rate,initial angle of attack and initial roll angle on the stable equilibrium state of lock-in motion were analyzed. Simulation results show that the stable state is a function of initial conditions under the same parameter condition. When there are two stable spin rates with the same magnitude and opposite directions, the occurrence of positive and negative spin is up to initial conditions while the stable spin rate is more likely to have the same direction with initial spin rate. It is necessary to design a reasonable value for specific parameters to make the lock-in motion occur.关键词
弹箭/转速-攻角闭锁/复攻角/非线性气动力矩/数值仿真Key words
missile/spin-yaw lock-in/complex angle of attack/nonlinear aerodynamic moment/numerical simulation分类
军事科技引用本文复制引用
李东阳,常思江,王中原..某弹箭转速-攻角闭锁数值仿真及分析[J].弹道学报,2016,28(4):12-16,29,6.基金项目
国家自然科学基金项目(11402117) （11402117）
中国博士后科学基金项目(2013M541676) （2013M541676）
