Influence of Boattail on the Magnus Effect of Spinning Non-finned Projectile at Small Angles of Attack

被引：0
作者：
Lei J.-M. [1 ]
Zhang J.-W. [1 ]
Tan Z.-M. [2 ]
机构：
[1] School of Aerospace Engineering, Beijing Institute of Technology, Beijing
[2] Systems Engineering Research Institute, China State Shipbuilding Corporation, Beijing
来源：
| 1705年 / China Ordnance Industry Corporation卷 / 38期
关键词：
Angle of boattail; Length of boattail; Magnus effect; Ordnance science and technology;
D O I：
10.3969/j.issn.1000-1093.2017.09.006
中图分类号：
学科分类号：
摘要：
In order to study the influence of boattail on the Magnus effect of spinning projectile at small angles of attack, the configurations with various boattail angles (θt) and lengths (Lt/D) are numerically simulated. The variations of the aerodynamic force and moment with Ma, θt and Lt/D are obtained. According to the aerodynamic characteristics and flow field structure, the effects of boattail on Magnus effect are studied in details, and the mechanism of the Magnus effect for spinning projectile is analyzed. The results show that component of Magnus force along-z direction increases with θt and Lt/D due to the asymmetric distortion of the boundary layer. Meanwhile, the force along z-direction due to the asymmetric circumferential shear stress distortion decreases gradually with θt and Lt/D, while increasing with Ma. The force along-z direction due to the asymmetric distortion of axial and circumferential pressures increases with θt, Lt/D, and Ma for Ma≥1, while decreasing with Ma for Ma<1. © 2017, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1705 / 1715
页数：10
相关论文
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