一种高精度水下武器发射内弹道计算方法  

A High-Precision Calculation Method for Internal Trajectory of Underwater Weapon Launch

作　　者：杨春 李开福 陈炜彬 李录甜 李银龙 YANG Chun;LI Kaifu;CHEN Weibin;LI Lutian;LI Yinlong(The 705 Research Institute,China State Shipbuilding Corporation Limited,Kunming 650101,China;Kunming Optics-Mechanics-Electricity Technology Corporation Limited,Kunming 650106,China)

机构地区：[1]中国船舶集团有限公司第七〇五研究所,云南昆明650101 [2]昆明欧迈科技有限公司,云南昆明650106

出　　处：《水下无人系统学报》2024年第6期1117-1122,共6页Journal of Unmanned Undersea Systems

摘　　要：针对水下武器气动发射系统,提出了一种高精度内弹道计算方法。该方法将高精度理论推导和计算流体力学滑移技术相耦合,对发射过程中的高压气体域运用四阶Runge-Kutta法进行求解,对水域部分采用滑移网格进行单自由度武器发射仿真,从而实现对内弹道的高精度计算,可弥补理论计算误差偏大和流体仿真成本高的缺陷。对比试验数据可知,通过该方法得到的武器出管速度平均误差为5.6%,发射气瓶截止压力平均误差为4.0%,证明了该方法的准确性。A high-precision calculation method for internal trajectory was proposed for the pneumatic launch system of underwater weapons.The method combined high-precision theoretical derivation with computational fluid mechanics slip technique and used the fourth-order Runge-Kutta method to solve the high-pressure gas domain during the launch process.The sliding grid was used to simulate the single degree of freedom weapon launch in the water area,so as to realize the high-precision calculation of internal trajectory,which could make up for the defects of large theoretical calculation error and high cost of fluid simulation.Through comparison with the test data,it can be seen that the average error of the discharge velocity of the weapon and the average error of the cutoff pressure of the posterior cavity obtained by this method are 5.6%and 4.0%,which proves the accuracy of this method.

关 键 词：水下武器 计算流体力学 内弹道 气动发射系统 

分 类 号：TJ630.32[兵器科学与技术—武器系统与运用工程] U674[交通运输工程—船舶及航道工程]