冲压增程炮弹气动特性研究  

Research on the Aerodynamic Characteristics of Ramjet Extended Range Projectile

作　　者：邓振宇 陈永恒 于大欢 DENG Zhenyu;CHEN Yongheng;YU Dahuan(The Second Office in Shenyang,Shenyang,Liaoning 110004,China;Liaoshen Industries Group Co.,Ltd.,Shenyang,Liaoning 110045,China;Military Representative Office in Jinzhou of Military Representative Bureau of the Army Equipment Department in Shenyang,Jinzhou,Liaoning 121000,China)

机构地区：[1]沈阳二室,辽宁沈阳110004 [2]辽沈工业集团有限公司,辽宁沈阳110045 [3]陆军装备部驻沈阳地区军事代表局驻锦州地区军事代表室,辽宁锦州121000

出　　处：《自动化应用》2023年第18期183-185,188,共4页Automation Application

摘　　要：本文采用UG对冲压增程炮弹炮弹建模,建立了一种中心轴对称,含有中心锥、燃烧室和进气道的冲压增程炮弹模型,在冲压增程炮弹主动段无尾喷情况下,使用FLUENT软件计算了冲压增程炮弹外流场,分析了弹丸不同飞行速度和攻角下的阻力系数、阻力值、外流场和压力云图。攻角破坏外流场的对称性,唇口部压强最大,中心锥头部次之,最大压强从唇口两侧均等偏转为来流侧。随着弹丸飞行速度逐渐加快,弹丸内外部的空气流速从内流速低于外流速逐渐向内流速大于外流速转化,两者速度接近时弹丸飞行速度为1.5 Mach左右。In this paper,UG is used to model the ram extended range projectile,and a ramjet extended range projectile model with center axis symmetry,center cone,combustion chamber and air inlet is established.When the ramjet extended range projectile has no tail spray in its active section,FLUENT software is used to calculate the external flow field of the ramjet extended range projectile,and the resistance coefficient,resistance value,external flow field and pressure cloud diagram of the projectile at different flight speeds and angles of attack are analyzed.The angle of attack destroys the symmetry of the external flow field.The pressure at the lip is the largest,followed by the central cone head.The maximum pressure deflects equally from both sides of the lip to the side in the flow direction.With the gradual increase of the projectile′s flight speed,the air velocity inside and outside the projectile is gradually transformed from the internal velocity lower than the external velocity to the internal velocity higher than the external velocity.When the two velocities are close,the projectile′s flight speed is about 1.5 Mach.

关 键 词：冲压增程炮弹 有限元分析 气动特性 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程]