简述了弹丸动态稳定性的研究状况。针对一对鸭舵、尾翼稳定式防空制导炮弹,建立了鸭舵控制作用下的有控弹道角运动模型,采用李雅普诺夫直接法导出有控炮弹自由运动动稳定条件。通过求解角运动方程,分析了舵面偏转条件下的弹丸受迫运动稳定性,分别讨论了影响自由运动和受迫运动稳定性的因素。结果表明,舵面参数与弹丸转速是影响有控弹道动稳定的主要因素,须在气动布局参数设计和弹道设计时加以合理控制。

The research status of dynamic stability for controlled and uncontrolled projectiles was discussed briefly Aiming at the antiaircraft guided projectile with fins and a pair of canards, the angular motion model in its controllable trajectory was established. Based on Liapunov's direct method, the dynamic stability condition of the controllable projectile was deduced. The stability of forced vibration under the action of canards was analyzed by solving the angular motion equation. The factors which affect the stability of free motion and forced vibration were discussed respectively. The result shows that the canard parameters and angular velocity are the main factors which influence the dynamic stability of the controllable projectile and should be controlled reasonably in the process of the design of aerodynamic configuration and trajectory.