Effects of the Boattail of a Spinning Projectile on Its Aerodynamics Characteristics
The Magnus effect acts on a spinning projectile including the side force and yawing moment,however,its final consequence on the projectile depends on multiple parameters,such as the spin rate,angle of attack,body shape,fins and bottail etc.The prediction of Magnus and dynamic stability derivatives of spin-stabilized projectiles were recently reported,and it was found that each configuration showed differences in the characteristics of Magnus moment.In order to understand such phenomenon,the Magnus effect on a generic 6.37 diameter long tangential-ogive-cylinder type projectile is studied by means of 3D DES simulations.The reliability of our numerical method has been verified with previous experimental data.Several configurations with different boattails were investigated numerically using the same method,the effects of different boattails and base geometry on the aerodynamic coefficients are shown and discussed,which can provide guidance for designing and improving the flight quality of spinning projectiles.
Magnus Effect Boattail Configuration Aerodynamic Characteristics
Jie MA Zhihua CHEN
State Key Laboratory of Transient Physics,Nanjing University of Science & Technology,Nanjing 210094,Jiangsu,P.R.China
国际会议
The 5th International Conference on Mechanical Engineering and Mechanics(第五届国际机械工程与力学会议)
江苏扬州
英文
89-94
2014-08-21（万方平台首次上网日期，不代表论文的发表时间）