Trajectory Characteristics And Numeric Simulation Of The Simply Guided Bomb

The simply guided bomb(SGB) is researched in this paper. The forces and moments acting on the bomb are analyzed and the corresponding reference frames and motion model are built .Based on disturbance theory ,the mathematical model is simplified .What's more, taking real flight of the SGB into account, some assumptions are given .On the basis of these assumptions, the motion of the SGB is broke into the motion in vertical plane and the motion in the horizontal plane.Dynamic characteristics of the motion in vertical plane is mainly studied. PID control method is established and the corresponding parameters are got with the methods of roots design and frequency design.Finally,numeric simulation and semi-objects simulation are finished.