双翼末敏弹尾翼弹性对气动特性影响分析  

Effect of Wing's Elasticity on Aerodynamic Characteristics of Terminal Sensitive Projectile

作　　者：吕胜涛[1] 郭锐[1] 刘荣忠[1] 马晓冬[1] 

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,南京210094

出　　处：《航天返回与遥感》2015年第2期18-23,共6页Spacecraft Recovery & Remote Sensing

基　　金：国家自然科学基金(11372136);国家自然科学基金–青年科学项目(1102088);高等学校博士学科点专项科研基金–新教师类(200932192006)

摘　　要：受安装条件限制,无伞末敏弹尾翼通常很薄,在末敏弹下落过程中,厚度不超过1mm的末敏弹尾翼将在气动力作用下发生一定程度的变形,变形后的尾翼又将对末敏弹气动特性产生影响。文章采用双向流固耦合方法对S-S型双翼末敏弹弹性尾翼进行研究,分析末敏弹气动参数随攻角和速度的变化趋势;采用计算流体力学方法对末敏弹刚性尾翼进行研究。将弹性尾翼与刚性尾翼的末敏弹气动参数进行对比。结果显示,刚性翼、弹性翼末敏弹的阻力系数均随攻角的增大呈准线性递减趋势;刚性翼、弹性翼末敏弹的升力系数均随攻角的增大呈递增趋势。自由飞行试验结果显示,末敏弹的气动参数与弹性翼末敏弹的仿真结果更为贴切。AbstractThe wings of non-parachute terminal sensitive projectile （TSP） are usually very thin because of restrict of installation condition. The wings deflect during falling process of TSP and the deflected wings would affect the aerodynamic characteristics. This paper studied elastic wings of S-S TSP based on two-way fluid-structure interaction method and studied rigid wings of TSP based on computational fluid dynamic （CFD）. The results show that drag coefficients of both rigid wings and elastic wings TSP quasi-linearly decrease with the increase of attack angle, while lift coefficients of both rigid wings and elastic wings TSP increase with the increase of attack angle. Free flight experiments have been carried out to test the aerodynamic characteristics of TSP, which show that the simulation of elastic wings fit the experiment results better.

关 键 词：气动弹性 无伞末敏弹 气动特性 挠曲变形 灵巧弹药 

分 类 号：TJ414.5[兵器科学与技术—火炮、自动武器与弹药工程]