Study On The Aerodynamic Characteristics And Trajectory Correction Strategy Of Two-dimensional Correction Projectile

With the development of science and technology,the combination of information technology and microelectronics technology with weapons and equipment produces ballistic correction projectile,which greatly improves the shooting accuracy of ammunition.By means of finite element fluid simulation and mathematical calculation,the aerodynamic characteristics and correction strategy of Two-dimension trajectory correction projectile are studied,which can make the projectile correction more accurate.According to the development and theoretical research of Two-dimension trajectory correction projectile products at home and abroad.The significance and method of studying aerodynamic characteristics and correction strategy of two-dimensional correction projectile are expounded.The canard type correction fuze is added to the ordinary 122 mm projectile to form a two-dimensional correction projectile.The influence of canard-missile assembly on aerodynamic effect is analyzed by fluid theory.Fluent fluid finite element software is used to analyze the correction mechanism when the phase angle is φ=0°.The influence of different Mach number,attack angle,speed and direction of correction mechanism,and projectile rotation speed on aerodynamic characteristics of the whole missile is studied.The influence of different Mach number,attack angle and phase angle on the aerodynamic characteristics of the whole projectile is analyzed through the aerodynamic simulation analysis.The trajectory equation which is suitable for describing the spatial displacement motion of two-dimensional correction projectile is established.The influence of different correction mechanism phase angle,initial correction time,initial velocity and firing angle on trajectory correction ability of two-dimensional correction projectile is analyzed by MATLAB software.The relationship between phase angle and azimuth angle of correction mechanism of two-dimensional correction projectile is explored,and trajectory control correction process and trajectory correction strategy are established.