Aerodynamics analysis of a hypersonic electromagnetic gun launched projectile  

作　　者：Jian Shen Shao-bo Fan Ya-xin Ji Qing-yu Zhu Ji Duan 

机构地区：[1]College of Mechatronics Engineering,North University of China,No.3,Xue Yuan Road,Tai Yuan,030051,China [2]Northwest Industries Group CO.,Ltd.,No.123,Xing Fu Middle Road,Xi'an,710043,China [3]Jilin Jiangji Special Industries CO.,Ltd.,No.17,Zun Yi West Road,Ji Lin,132021,China [4]AVIC China Aero-Polytechnology Establishment,No.7,Jing Shun Road,Beijing,100028,China

出　　处：《Defence Technology（防务技术）》2020年第4期753-761,共9页Defence Technology

基　　金：supported by Youth Science and Technology Research Fund;Shanxi Province Applied Basic Research Projectgrant number 201801D221039;Science Foundation of North University of China grant number XJJ201813;Scientific and Technologial Innovation Programs of Higher Education Institutions in Shanxi grant number 2019L0570;Aeronautical Science Foundation of China grant number 2019020U0002。

摘　　要：A hypersonic aerodynamics analysis of an electromagnetic gun(EM gun) launched projectile configuration is undertaken in order to ameliorate the basic aerodynamic characteristics in comparison with the regular projectile layout.Static margin and pendulum motion analysis models have been applied to evaluate the flight stability of a new airframe configuration.With a steady state computational fluid dynamics(CFD) simulation,the basic density,pressure and velocity contours of the EM gun projectile flow field at Mach number 5.0,6.0 and 7.0(angle of attack=0°) have been analyzed.Furthermore,the static margin values are enhanced dramatically for the EM gun projectile with configuration optimization.Drag,lift and pitch property variations are all illustrated with the changes of Mach number and angle of attack.A particle ballistic calculation was completed for the pendulum analysis.The results show that the configuration optimized projectile,launched from the EM gun at Mach number 5.0 to 7.0,acts in a much more stable way than the projectiles with regular aerodynamic layout.

关 键 词：Electromagnetic gun launched projectile Hypersonic aerodynamics Airframe configuration optimization Static margin PENDULUM 

分 类 号：TJ866[兵器科学与技术—武器系统与运用工程]