由于舵翼面安装误差、发动机推力偏心及各种随机扰动的综合影响,火箭弹有可能出现较大幅度并发散的锥形运动导致试验失败。文中通过锥形运动的机理分析,提出当纵横向运动频率接近或交叉且弹体振荡幅度较大时才会出现锥形运动发散。仿真结果表明,通过火箭弹纵横向运动频率及振荡幅度的数学仿真,可给出舵翼面安装误差及发动机推力偏心的控制要求。

Due to influences of installation error of rudder and wing, engine thrust misalignment and random disturbance, conical motion with large amplitude and divergence may occur to rocket projectile, which causes test failure. In this paper, mechanism of conical motion was analyzed. When longitudinal and transverse movement frequencies close or cross and amplitude of missile body is larger, the conical motion divergence is presented. Simulation results show that through mathematical simulation of longitudinal and transverse movement frequencies and oscillation amplitude of rocket projectile, the control requirements of wing surface mounting error and engine thrust misalignment are given.