Abstract:In order to solve the problem of time lag in the longitudinal trajectory tracking control of the receiver aircraft during the traditional aerial refueling docking, a docking flight control method based on direct lift was proposed. The nonlinear L1 guidance method was used to generate the longitudinal and transverse acceleration commands, and two direct lift schemes were designed to improve the longitudinal trajectory control of the receiver aircraft. The attitude loop was designed by the dynamic inverse method, and the dynamic inverse internal loop was compensated by the expanded state observer. The simulation results show that two schemes can eliminate the time lag of longitudinal trajectory tracking, realize the rapid response of longitudinal trajectory of the receiver aircraft, and complete the successful docking of aerial refueling.