上海交通大学学报

上海交通大学学报（自然版） ›› 2015, Vol. 49 ›› Issue (05): 651-656.

• 兵器工业 • 上一篇    下一篇

提拉活塞式导弹水下发射过程数值模拟

刘传龙，张宇文，王亚东，陈诚   

  1. (西北工业大学 航海学院， 西安 710072)
  • 收稿日期:2014-04-08

Numerical Simulation of Underwater Piston Pulling Launched Missile

LIU Chuanlong,ZHANG Yuwen,WANG Yadong,CHEN Cheng   

  1. (School of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China)
  • Received:2014-04-08

摘要：

摘要：  为综合潜艇和导弹在作战中的优点，将陆上导弹常用的提拉活塞发射方式移植到水下，并利用潜艇进行水下导弹发射，对提拉活塞式导弹发射过程进行数值模拟，建立了耦合求解非定常流场和运动的数值仿真模型，在给定初始条件下，模拟了导弹在水下和空中发射的出筒过程，分析了发射流场和导弹运动参数的变化情况.仿真结果表明：在水下发射导弹的过程中，海水来不及填补因导弹运动形成的弹尾区域空隙而形成了空化，产生了较大的压差阻力，减小了出筒速度和增加了出筒所需时间；弹尾处空化的产生增大了导弹水动力特性的不确定性，给发射内弹道的设计和控制造成了困难，弹尾处空泡溃灭后产生的压力波对弹尾和筒底形成巨大的冲击载荷，并对弹尾和筒底的结构防护提出了更高要求.

关键词: 导弹, 水下发射, 提拉活塞式, 流场, 耦合计算

Abstract:

Abstract： To combine the advantages of each submarines and missiles in combat, the piston pulling mode which was generally used in landbased missiles was ported to underwater missiles launched by submarines. A numerical simulation model coupled calculation of unsteady flow and motion was established to carry out piston pulling launched missile. The process of the missile launched underwater and air while ejecting out of launching tube was calculated by the given initial conditions. The evolution of missile launching flow and motion parameters was given. The simulation results indicate that there is no enough time for the sea water to fill up the space caused by the motion of the missile during the underwater launching process. The unfilled space comes into cavitation, which increases the pressure drag of the missile, thus reducing the velocity of the missile and increasing the time for ejecting out of launching tube. The cavitation around the missile tail raises the uncertainty of the missile hydrodynamic characteristic, and has an adverse effects on the design and controlling of internal ballistics. The impact load on the tail and the bottom of the tube of collapse and perish by the cavitation will pose higher requirements for structure protection of those places.

Key words: missile, underwater launching, piston pulling, flow, coupled calculation

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