自然超空泡航行体弹道稳定性分析

Simulation of the trajectory stability of natural supercavitating vehicles

摘要:

针对空化数实时变化的自然超空泡航行体的弹道稳定性问题,建立了纵平面内的简化运动方程,完成了弹道仿真程序的改进和完善,并仿真分析了其在110 m/s速度下的弹道特性.仿真结果表明,由于空化数变化使航行体受力失衡,航行体的姿态与受力互相影响,使航行体在超空泡壁面附近做规律性的振荡.

Abstract:

To understand the laws of trajectory stability for natural supercavitating vehicle in the condition of changing cavitation number,the simplified equations were derived and the corresponding simulation software for trajectory were developed,by which the trajectory characteristics of natural supercavitating vehicles were obtained at the speed of 110 m/s.The theoretical prediction results show that the balance of forces was broken by the influences of the changing cavitation number,and the periodically oscillation around the cavity wall was happened by the interaction between the forces and attitude.