鸭式布局二维修正双旋弹角运动及转向响应特性分析

In order to study the dynamic response law of dual-spinning projectile with canard layout in the state of control, the angular motion and swerving response characteristics of it are analyzed theoretically. Based on the seven degrees of freedom rigid body ballistic model, the transient-state and steady-state analytical solutions of the angle of attack of projectile are solved, and the analytical expressions of projectile's transient-state and steady-state swerving responses are derived. The effects of control command update period, elevation angle, spin rate and initial velocity on swerving response characteristics are explored. The results show that the direction of control force has little influence on the phase shift angle of swerving response. When the update period of control command is short, the transient-state and steady-state solutions of phase shift angle differ greatly at the ballistic apex, and the transverse-longitudinal coupling of projectile is low after using the transient solution correction. With the increase in update period, the transient-state solution of phase shift angle of swerving response gradually approaches to the steady-state solution. In addition, the steady-state solution of phase shift angle decreases with the increase in rotational speed and increases with the increase in projectile velocity. The correctness of the theory is verified by experimental data. This research provides some theoretical basis for the design and analysis of two-dimensional correction control system of dual-spinning projectile with canard layout.