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
杨春 1李开福 1陈炜彬 1李录甜 2李银龙1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
underwater weapon/computational fluid mechanics/internal trajectory/pneumatic launch system引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据