波浪扰动下的小型潜射导弹出水动力学建模与仿真

运用Morison公式,提出波浪扰动作用下,考虑弹体运动与波浪耦合的导弹出水过程动力学模型,并对小型潜射导弹的出水过程进行仿真和分析。以弹体姿态变化为例,研究弹体运动与波浪间的耦合关系对波浪扰动作用的影响,分析海情等级、波浪相位、出水速度、出水姿态角等因素对导弹出水过程的影响。结果表明,考虑弹体运动与波浪间耦合关系的出水动力学模型更加准确;潜射导弹的小型性和快速出水特性有利于降低波浪对导弹出水姿态的影响;对快速出水的潜射导弹,波浪扰动分析时须考虑海情等级、出水时间和波浪相位的影响。

Dynamics modeling and simulation of water-exit course of small submarine-launched missile under wave disturbance

Water-exit course is unique to submarine-launched missile. The attitude and trajectory of missile is changed by wave disturbance during the course. Based on Morison equation, dynamics and kinetic model of water-exit missile under wave disturbance is built, which takes the coupling between wave and motion of missile into account.. The water-exit motion of small submarine-launched missile is simulated and analyzed. Furthermore, the effects of coupling between wave and motion of missile body to wave disturbance, illustrated by change process of attitude of missile, are studied. The influences of sea condition, wave phase, velocity and attitude of missile to the motion of water-exit course are analyzed. The result indicates that the characteristics of submarine-launched, which are small size and fast water-exit, reduce the impact of wave to attitude of missile. In addition, the wave disturbance to high-speed water-exit missile is significantly affected by sea condition, duration of water-exit course and wave phase. The dynamic model which takes the coupling between wave and motion of missile into account is more accurate.