The problems concerning an aerospace vehicle's(ASV) atmospheric reentry flight attitude control system were researched.During reentry through the atmosphere

the control moment is generated by thrusters of the reaction control system(RCS) to control attitudes of the ASV

and to compensate for the shortage of aero-surfaces that fail to offer enough moment because of the partially or completely lost efficiency.Along with the increase in air density

aero-surfaces gradually intervene the control system

and the RCSdrops out of use.Because the control torque is determined by the fast loop controller and the torque is assigned to actuators by the control allocation algorithms

a multi-model switching control method based on T-Sfuzzy control is proposed and is employed to design the controller for the fast-loop such that the required virtual control input is tracked and the actuators' chattering is reduced.Therefore

the control input is softened.The effectiveness of the proposed method is demonstrated by the simulation results.