舰船摇摆下鱼雷空中弹道研究

Effect on Torpedo Air Trajectory with the Surface Ship Swaying Considered

基于对舰船的摇摆运动和鱼雷尾鳍的强迫运动的分析,把舰艇摇摆看成绕舰体质心的摇摆运动和以舰艇质心为基点的轨道运动的合成运动,利用动量定理和动量矩定理建立了舰船摇摆情况下的鱼雷空中弹道3D数学模型,对鱼雷空中弹道进行了仿真,结果表明,舰艇摇摆对鱼雷入水时的横摇角影响明显;当发射装置处于正横向位置时,舰艇摇摆对鱼雷出管速度的方向影响大,舰艇甲板面倾斜角的变化,将影响鱼雷的入水角和射程。

In analysis of the swaying movement of the surface ship and the constraining movement of the torpedo tail fin, the swaying is regarded as the resultant movement of swaying around the ship′s center of mass and trajectory movement with base point at mass center. A 3D mathematical model of torpedo air trajectory when the ship is rocking was built on momentum theorem and moment of momentum theorem. The simulated results show that the swaying angle obviously influence the roll angle at that moment torpedo water entry. When the launcher is positioned perpendicular to the ship, the swaying has great effect on direction of torpedo ejecting speed, and the change of deck inclined angle has impact on both the water entry angle and range of torpedo.