Study on BTT Coordinated Turn Autopilot Design for Reentry Gliding Vehicle

Two-loop acceleration yaw-autopilot with a PI compensator and the engineering approximation of sideslip angle rate feedback for autopilot inner-loop are put forward accounted for BTT coordinated turn control of reentry gliding vehicle. The effect of turning acceleration to body-frame yaw channel is analyzed deeply, two-loop acceleration yaw-autopilot with a PI compensator is advanced to ensure system rapidity and stability based on minimum output by turning acceleration. The convergence essence of sideslip angle rate feedback is presented, furthermore, the engineering implementation composed by yaw angle rate and feedforward compensator is presented. Finally, the simulation results show that the autopilot design can make sideslip angle to be zero fast, improve the performance of coordinated turn. The design has certain robustness and application value.