鱼雷衡重特性对初始弹道的影响分析

建立了鱼雷水下空间弹道数学模型,并针对鱼雷不同的衡重特性,采用四阶龙格库塔法和全选主元高斯消去法进行了仿真计算,分别研究了不同自由角、管制舵角和初始速度时初始弹道的变化规律.仿真结果表明,在质量相对较小、质浮心距离较大时,鱼雷初始弹道更易出现拱水现象,因而不适于在浅深度发射;在质量相对较大、质浮心距离很小时,鱼雷初始弹道出现较大袋深,发射时要求大深度海区.这些现象只能在一定程度上通过调整管制舵角、自由角和发射初始速度来克服.

Analysis of effects of torpedo′s weighing property on initial trajectory

A model was established for the underwater trajectory of a certain-type torpedo. The fourth-order Runge-Kutta method and the Gaussian elimination method with complete pivoting were used to analyze the effects of different free angles, controlled rudder angles and initial velocities on the initial trajectory of the same torpedo with different weighing properties. The simulation results show that torpedoes with small mass and large distance between the mass center and the buoyant center are not suitable for being launched in shallow waters because of the arc water in the initial trajectory, and that torpedoes with larger mass and smaller distance between the mass center and the buoyant center are also in demand of deep sea for launching because of the maximum depth of the initial trajectory. These problems can only be overcome by adjusting the setting parameters,such as the controlled rudder angles, free angles and initial velocities.