基于后效作用的图像末制导炮弹尾翼张开特性研究  

Study on Tail-fin Opening Characteristics of Image Terminal Guided Projectile Based on After-effect

作　　者：蔡灿伟 宁全利 邓海飞 刘闯 许汝耀 CAI Canwei;NING Quanli;DENG Haifei;LIU Chuang;XU Ruyao(Army Academy of Artillery and Air Defense,Hefei 230031,China)

机构地区：[1]陆军炮兵防空兵学院,安徽合肥230031

出　　处：《弹道学报》2025年第1期44-53,共10页Journal of Ballistics

基　　金：173项目(2019-JCJQ-142);安徽省新时代研究生学术创新资助课题(2023xscx147);院自主科研课题(PFXY230101029)。

摘　　要：为准确分析图像末制导炮弹气缸张开式尾翼张开特性,根据尾翼结构特点与作用原理,研究了气缸充放气过程、活塞启动之后的运动过程与尾翼片转动过程,并与末制导炮弹膛内过程和炮口后效过程相耦合量化,构建了基于后效作用的尾翼动态张开模型,基于该模型对某型图像末制导炮弹进行了数值仿真研究,得到了尾翼张开到位前弹底与气缸内压力、弹丸运动速度与位移、活塞运动位移和尾翼片张开角度等随时间的变化规律。从最大膛压、弹丸炮口初速、尾翼张开到位时距炮口位置及其尾翼片张开角度的仿真与测试情况来看,相对误差分别为3.2%、0.7%、4.7%和5.7%,仿真结果的可信度较高,并且相关曲线与实际变化规律相一致,验证了模型合理性。在此基础上,从装备设计使用的角度分析了装药量和气孔直径的变化对图像末制导炮弹尾翼张开特性的影响规律,给出了具体指导意见。研究成果可为图像末制导炮尾翼结构的优化设计、强度校核与工作异常机理分析以及其他新型气缸张开式尾翼弹的研制应用,提供一定的理论基础与数据支撑。In order to study the tail-fin opening characteristics of the image terminal-guided-projectile,according to the structure characteristics and action principle of tail-fin,the movement process of the piston after starting and the rotation process of tail-fin were studied,which were coupled with the bore process and the after-effect process of the terminal guided projectile.The numerical simulation was carried out for the certain image terminal-guided-projectile.The pressure of projectile base and cylinder,displacement and velocity of projectile,displacement of piston,opening angle of fin and gas resistance were obtained.The results show that the relative errors of maximum pressure on the base,muzzle velocity,tail opening position and tail-fin opening angle are 3.2%,0.7%,4.7%and 5.7%respectively,which are within the allowable range.The related simulation curves are consistent with the actual change law,verifying the rationality of the model.On this basis,the influence of charge and pore diameter on tail-fin opening characteristics of image terminal-guided-projectile was analyzed from the perspective of equipment production and firing use,and the specific guidance was given.The research results can provide theoretical and data support for structure optimization design,strength check and abnormal mechanism research of the tail structure of the image terminal-guided-projectile,and also provide reference for development and use of other new-type cylinder-opening tail-fin projectiles.

关 键 词：图像末制导炮弹 气缸张开式尾翼 后效作用 动态张开 数值模拟 

分 类 号：TJ410.2[兵器科学与技术—火炮、自动武器与弹药工程] TJ413.6