Control method research on wide flight envelope aerocraft

The flying qualities of aerocraft was directly effected by the autopilot, for the wide flight envelope aerocraft, on the basic of analyzing the typical trajectory, the three loop autopilots of roll stability, pitch and yaw were designed, using single-mode Transient suppression method, the overload due to control surface transition deflection was avoided when control parameters changing, the verification was done by non-linear simulation. The result showed that: Under the action of the disturbance torque, the maximum roll was less than 5°, the range of the aerocraft was from 13.5km to 22.4km, the max height was about 5100m , the max deviation of lateral was about 42m, the maximum elevator deflection was less than 6.5°; the control law was applicable within the effective range. An autopilot design method of wide flight envelope aerocraft was provided.