大深度无动力运载器上浮弹道特性研究

研究无动力大深度布放导弹运载器出水动态优化问题,在姿态角、速度和角速度等参数满足一定性能指标要求时,能使导弹和运载器成功安全分离。由于无控制上浮弹道受几何外形、海流、海浪及发射速度等因素影响,使上浮特性不清。为此利用运载器流体动力参数,建立运动数学模型,研究运载器弹道,并在CFD软件上进行仿真,重点分析了运载器壳体长细比、鳍板展弦比和发射速度对弹道参数影响规律。结果表明,出水俯仰角随长细比和发射速度减小而增大,展弦比和发射速度对出水合速度影响较小。研究结果可以为导弹运载器外形和弹道设计提供一定参考。

Upward Trajectory Research on Deep Water Unpowered Carrier

This paper focuses on the exit-water dynamic optimization research on unpowered missile carrier launched from deep water.If the parameters of exit-water attitude angle,velocity,angular velocity and so forth meet specific performance index,the missile and carrier will be separated successfully.The vehicle’s uncontrolled upward trajectory affected by many factors such as geometry profile,ocean current,sea wave,launching speed and so on is uncertain.This paper established moving mathematical model by using the hydrodynamic force coefficient of the vehicle to research its trajectory and applies CFD technology to make a simulation.The influence law of the upward trajectory caused by slenderness ratio,aspect ratio and launching speed was mainly analyzed here.The simulation results show that exit-water pitching angle increases with the reducing of slenderness ratio and launching speed,and the exit-water resultant velocity is less affected by aspect ratio and launching speed.The results can be used in missile carrier geometry profile designing and ballistic programming.