Use roll actuator to reduce coupling of BTT missile

A new structure actuator for reducing coupling of bank-to-turn (BTT) missiles to is studied. The new structure actuator can roll independently along the longitudinal axis of the missile. Hence, the actuator instead of airframe needs to steer when controlling BTT missile rolling. So the rolling speed of main airframe is reduced, it can reduce coupling of missile introduced by airframe rolling. And controlling logic is designed for the missile using roll actuator. Final, analysis and simulation results demonstrate the effectiveness of the rolling actuator in decoupling a BTT missile.