平头射弹前体参数对弹道稳定性及射程的影响  

The Influences of Forebody Parameters of Flat-nosed Projectile on Trajectory Stability and Range

作　　者：许云涛[1,2] 檀大林 杨超[1] 戴玉婷[1] 王震霄 周鹏 XU Yuntao;TAN Dalin;YANG Chao;DAI Yuting;WANG Zhenxiao;ZHOU Peng(School of Aeronautic Science and Engineering,Beihang University,Beijing 100083,China;Beijing Institute of Mechanical and Electrical Engineering,Beijing 100074,China)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083 [2]北京机电工程研究所,北京100074

出　　处：《兵工学报》2024年第6期1933-1941,共9页Acta Armamentarii

摘　　要：为研究超空泡射弹前体参数对弹道稳定性和射程的影响规律,建立一种基于模态动力学的流场与弹道高效耦合仿真方法,提出超空泡射弹尾拍过程稳定度和有效射程的量化评价方法,完成针对泡型计算方法和尾拍弹道求解方法的合理性验证。在此基础上,分析射弹不同前体头径和锥段长度组合条件下的弹道稳定性和有效射程变化规律。研究结果表明:随着前体头径和锥段长度的增大,射弹稳定性越来越高,失稳弹道存在“直接失稳”和“振荡失稳”两种模式;射弹各头径对应的最大射程随着头径的增大先增加后减小,设计域内最大射程和最小射程相差3.8倍,前体参数对弹道有效射程有较大影响。The influences of forebody parameters on the trajectory stability and range of supercavitating projectile are studied in the paper.A high efficiency coupling method of flow field and trajectory is established based on modal dynamics,a quantitative evaluation method for the trajectory stability and efficient range of supercavitating projectile during tail-slapping is proposed,and the simulated cavity shape and tail-slapping trajectory are validated.On this basis,the change law of trajectory stability and range of the projectiles with different lengths and diameters of forebody are analyzed.Results show that the trajectory stability increases with the increase in the diameter and length of forebody,and the trajectory instability mode can be divided into direct instability and oscillate instability.With the increase in diameter,the maximum range increases at first and then decreases,the maximum range is 3.8 times of the minimum range in the design domain,which means the forebody parameters have a relatively large influence on the range of projectile.

关 键 词：超空泡射弹 前体参数 弹道 稳定性 射程 

分 类 号：TJ630[兵器科学与技术—武器系统与运用工程]