针对固定翼鸭舵二维修正弹外弹道运动受力及修正特点,提出了“即修即停”的修正策略与摄动落点推测算法,可对修正过程进行有效复现。推导了弹体升力、导转力矩等气动力与马赫数、攻角的映射关系,建立了外弹道飞行环境下修正弹动力学模型,实现了有控修正弹舵片的修正过程模拟。构建了由弹道模拟、气动仿真、动力学仿真、舵片测姿与控制模拟等二维弹道联合仿真系统,得到了修正时间、修正角度、修正次数等过程参数对最终落点的评测,给出了在横风等不同外界干扰环境下的修正结果。仿真与实验结果验证了所提方法的有效性。

According to the force and correction characteristics of fixed wing canard two-dimensional correction projectile, the correction strategy of “repair and stop” and the algorithm of perturbed impact point inference are proposed, which can effectively reproduce the correction process. The mapping relationship between aerodynamic forces such as lift and steering moment and Mach number and angle of attack is derived. The dynamic model of correction projectile in exterior ballistic flight environment is established, and the correction process of rudder is simulated. A two-dimensional trajectory co simulation system including trajectory simulation, aerodynamic simulation, dynamics simulation, rudder attitude measurement and control simulation is constructed. The evaluation of the final impact point by process parameters such as correction time, correction angle and correction times is obtained, and the correction results under different external interference environments such as cross wind are given. Simulation and experimental results verify the effectiveness of the proposed method.