伞形阻力器一维弹道修正弹气动特性分析  

Aerodynamic Characteristics Analysis on One-dimensional Trajectory Correction Projectile with Umbrella Resistance Device

作　　者：李婧伟[1] 吴国东[1] 王志军[1] 王瑞华 

机构地区：[1]中北大学机电工程学院,太原030051 [2]晋西工业集团有限责任公司,太原030051

出　　处：《弹箭与制导学报》2014年第6期123-126,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：为了研究伞形阻力器一维弹道修正弹的气动特性,在标准82 mm口径迫击炮弹上加装伞形阻力器,建立一维修正弹模型。利用流体计算软件Fluent对亚音速飞行时弹丸模型进行了数值仿真。结果表明,阻力伞的展开破坏了弹体头部的流线形结构,改变了弹丸的气动布局,使得弹丸所受阻力增大。阻力伞展开前后阻力系数比可达到2.3左右。研究结果可以为一维弹道修正弹的研究提供帮助。In order to study aerodynamic characteristics of one-dimensional trajectory correction umbrella resistance device,a ballistic correction projectile model with umbrella resistance on standard 82 mm mortars was established in the paper. Then,the numerical simulation against the model in the subsonic case was implemented by the computational fluid dynamics software Fluent. The result shows that expansion of the resistance umbrella structure destroys streamline structure of warhead,and changes aerodynamic layout of projectile,making the resistance is bigger. The resistance coefficient ratio reaches about 2. 3 before and after resistance umbrella opening. The result could help to research on one-dimensional trajectory correction projectile.

关 键 词：阻力伞 弹道修正弹 气动特性 数值模拟 

分 类 号：TJ011.2[兵器科学与技术—兵器发射理论与技术]