弹头引信外形对小口径亚音速弹气动特性影响  

Investigation of Aerodynamic Characteristics of Small-caliber Subsonic Grenade with Different Nose Fuze Shape

作　　者：王洪超[1] 闻泉[1] 刘治旺 王雨时[1] 张树明 

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]湖南建华精密仪器有限公司,湖南永州425024

出　　处：《弹箭与制导学报》2014年第6期113-118,共6页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：为了为弹丸总体优化设计提供参考,应用FLUENT仿真软件仿真研究了弹头引信外形对小口径亚音速弹丸气动力特性的影响,得到了头部形状为单一圆台形、组合圆台形和半球形的三种弹丸在不同攻角、不同马赫数下的阻力系数、升力系数、俯仰力矩系数和压力中心变化规律。结果表明:攻角对阻力系数、升力系数影响不明显。马赫数小于0.7时,头部形状为半球形的弹丸阻力系数最小、升力系数最大;马赫数大于0.7时,头部形状为组合圆台形的弹丸阻力系数最小、升力系数最大。In order to provide a reference for optimal grenade design,FLUENT simulation software was applied to study the effect of smallcaliber subsonic warhead’s fuze shape on aerodynamic characteristics of grenades,drag coefficient lift coefficient,pitching moment coefficients and center of pressure variation of three grenades’ head shapes（ singe cone,truncated combination and hemispherical） at different angles of attack,different Mach number were achieved. The results show that： angle of attack has no obvious effect on the drag coefficient lift coefficient. When Mach number is less than 0. 7,drag coefficient of grenade with the hemispherical head shape is minimum,its lift coefficient is maximum; when Mach number is greater than 0. 7,drag coefficient of grenade with truncated combination head shape is minimum,its lift coefficient is maximum.

关 键 词：引信 总体设计 仿真 外流场 气动力分析 

分 类 号：TJ011.2[兵器科学与技术—兵器发射理论与技术]