A Study On The Ballistic Characteristics Of The Two-dimensional Trajectory Correction Projectile

Being a research hotspot in the projectile field, two-dimensional trajectory correction technique can effectively improve the impact accuracy. In this thesis, some problems such as aerodynamic properties, flight stability and ballistic properties of a typical two-dimensional trajectory correction projectile were discussed.According to the configuration characteristic of two-dimensional trajectory correction projectile, the force and moment of the projectile were analyzed, and the ballistic mathematical model was established based on the motive characteristic.Based on aerodynamic characteristics of two-dimensional trajectory correction projectile, the thesis put forward the calculation method for the aerodynamic force of drag brake and damping tab in different sizes and different locations. Simulation results show that this aerodynamic calculation method has favorable generality. The result has certain reference significance for aerodynamic configuration.Trajectory correction is premised by ensuring the stable flying of projectiles. According to the theory of exterior ballistics, the thesis studied stability of two-dimensional trajectory correction projectile in flight, and analyzed for the influence of the projectile correction.A numerical simulation had been made on movement parameters in different aerodynamic parameters. The thesis summarized correction rule for two-dimensional trajectory correction projectile. Ballistic properties in different departure angle were analyzed, and the minimum departure angle was obtained. The calculation results have certain reference value.