Correction Mechanism Analysis for a Class of Spin-stabilized Projectile with Fixed Canards

Correction control mechanism for a class of spin-stabilized projectile is presented. The analyzed configuration couples correction part and the body part, and the correction part with fixed canards and sensors aims at trajectory correction. Formulas of the dynamic equilibrium angle and drift are derived, and by integrating the deviation motion along the trajectory the drift value can be obtained. The analytic solution of the deviation motion is acquired, and it points out that the dynamic equilibrium angle induced by trajectory correction is the key factor. Through studying the influence of correction to the dynamic equilibrium angle and attack angle, the correction mechanism is found. Simulation results show that the components of control angle in the vertical and horizontal planes make the projectile axis move to the components’ opposite directions, and produce negative correction control effect.