An IDLC landing control method of carrier-based aircraft based on control allocation of multiple control surfaces

The traditional landing control mode of the carrier-based aircraft, which uses the pitch lever to control the angle of attack and the throttle lever to control the glide, has many shortcomings, such as the coupling of control channel, coupling of track and attitude, and low landing accuracy. Due to the adverse factors such as ship wake disturbance and carrier deck motion, pilots need to frequently conduct glide correction control, which is a heavy physical and mental burden for the pilots. Based on the analysis of the structure and landing process of the U.S. military MAGIC CARPET system, an Integrated Direct Lift Control (IDLC) landing control method for the triplane configuration aircraft is proposed based on control allocation of multiple control surfaces. The simulation results show that the direct force landing control method based on the Eigen-Structure Assignment(EA) decoupling design can realize the decoupling of long period mode and short period mode of aircraft longitudinal motion, and decoupling of the throttle channel and the longitudinal control channel. The design scheme based on control allocation not only gives full play to the aerodynamic advantages of the three wing configuration aircraft, but also reduces the trim amount of the horizontal tail and decreases the lift loss caused by the upward deflection of the horizontal tail. © 2021, Beihang University Aerospace Knowledge Press. All right reserved.