尾流自导鱼雷断层和空穴运动仿真研究

舰船尾流中的断层和空穴对尾流自导鱼雷影响很大,严重时可能使鱼雷出现反向导引,导致鱼雷命中概率的降低和航程损失的增大。该文基于M atlab的多状态值仿真,分析了三波束尾流自导鱼雷在不同形状和尺寸的断层和空穴中的运动规律,及其鱼雷最大回旋角度的变化规律和相应的鱼雷弹道变化特点。仿真结果表明,较小尺寸（断层宽度小于等于7.25 m,空穴半径小于等于8.24 m）的断层和空穴对鱼雷运动没有影响,此时鱼雷回旋角等于0;°当回旋角大于0°,鱼雷在断层中的运动比空穴中的复杂。这为三通道尾流自导鱼雷对抗断层和空穴的程序弹道设计提供参考。

Simulation on Movement of Fracture Zone and Cavity for Wake Homing Torpedo

The fracture zone and cavity of a ship impose a great effect on a wake homing torpedo,even lead to torpedo reverse guidance,resulting in low torpedo hit probability and high range loss.We analyze the movement law of 3-beam wake homing torpedo in the fracture zone and cavity with different sizes and shapes,and the change law of torpedo′s maximal turning angle with relevant torpedo trajectory through multi-state simulation based on Matlab.Simulation results show that the fracture zone and cavity with smaller sizes（the zone width ≤7.25 m,the cavity radius≤8.24 m） have no effect on torpedo movement,while torpedo turning angle is equal to 0°;when the turning angle is larger than 0°,torpedo movement is more complex in fracture zone than in cavity,which may provide a reference for trajectory design against fracture zone and cavity of 3-beam wake homing torpedo.