电磁发射穿甲弹脱壳机理研究  

Study on the Discarding Mechanism of Electromagnetic-Launched Armor-Piercing Projectile

作　　者：韩香彤 曹红松[1] 刘峰 白吉川 王兆国 HAN Xiangtong;CAO Hongsong;LIU Feng;BAI Jichuan;WANG Zhaoguo(College of Mechatronics Engineering,North University of China,Taiyuan 030051,Shanxi,China;Heilongjiang North Tool Co.,Ltd.,Mudanjiang 157000,Heilongjiang,China;Jinxi Industrial Group Co.,Ltd.,Taiyuan 030027,Shanxi,China)

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]黑龙江北方工具有限公司研究与开发中心,黑龙江牡丹江157000 [3]晋西工业集团有限责任公司,山西太原030027

出　　处：《火炮发射与控制学报》2024年第5期35-42,共8页Journal of Gun Launch & Control

摘　　要：为了适应电磁轨道发射方式,采用的两瓣式矩形弹托小口径脱壳穿甲弹相较于传统火炮发射缺乏膛内的预分离力,出炮口后弹托受到的气动力直接影响到脱壳的可靠性。为提高脱壳可靠性,基于动网格技术建立了流体力学与6DOF动力学耦合的数值仿真模型,研究了脱壳过程中流场的变化规律和弹体受到的气动干扰。针对弹托迎风窝前端面位置以及迎风窝深度两个核心结构参数,对比了弹托的运动特性及气动参量。结果表明:适当调整迎风窝前端面位置可以改善弹托翻转姿态,增加迎风窝深度可有效改善弹托升阻比,优化弹托分离轨迹。该方法可为电磁发射脱壳穿甲弹的设计提供参考。In order to adapt to electromagnetic railgun launch,a small-caliber saboted armor-piercing projectile with a two-part rectangular sabot was utilized.Compared to traditional artillery,the lack of pre-separation force inside the gun bore results in aerodynamic forces directly affecting the reliability of sabot separation.A numerical simulation model coupling fluid mechanics and 6DOF dynamics was established using dynamic mesh technology to investigate flow field characteristics and aerodynamic disturbances on the projectile body.Comparisons were made regarding the trajectory and aerodynamic forces of the sabots,with a focus on the core structural parameters including the position of the fore end of the wind′s eye and the depth of the wind′s eye.The results indicate that adjusting the position of the fore end of the wind′s eye can enhance sabot flipping attitude,while increasing the depth of the wind′s eye can effectively improve the lift-to-drag ratio of the sabot and optimize trajectory.This method can serve as a reference for the design of electromagnetic-launched armor-piercing projectiles.

关 键 词：弹托分离 弹托结构 动网格 流体力学 六自由度 

分 类 号：TJ413.2[兵器科学与技术—火炮、自动武器与弹药工程]