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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (12): 124770-124770.doi: 10.7527/S1000-6893.2020.24770

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Air wake suppression method based on direct lift and nonlinear dynamic inversion control

LUO Fei1, ZHANG Junhong1, WANG Bo1, TANG Ruilin1, TANG Wei2   

  1. 1. AVIC The First Aircraft Design Institute, Xi'an 710089, China;
    2. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-09-21 Revised:2020-10-13 Published:2020-10-30

Abstract: In complicated combat and landing environments, the disturbances of the air wake remains one of the main sources of ship landing errors. Utilization of the rapidity and decoupling capabilities of the Direct Lift Control (DLC) in the gliding phase can significantly reduce the pilot's controlling burden during landing and improve the suppressing ability of the air wake. From the perspective of decoupling of trajectory adjustment and attitude stability, this paper proposes to implement a precision carrier landing control law scheme based on direct lift under the framework of Nonlinear Dynamic Inverse (NDI) control, and establishes an E-2C full aircraft simulation model containing ship wake disturbances for verification. The results show that the design of the carrier-based aircraft landing control law with the introduction of DLC in the NDI can achieve a stable attitude during the landing stage, and meanwhile, rapid decoupling to adjust the track error through the direct force. In the case of introducing the ship wake interference, the simulation indicates that the control law has the ability to quickly correct the glide angle error, suppress the interference of the ship's wake, and consequently, significantly improve the landing accuracy.

Key words: air wake suppression, precision carrier landing, nonlinear dynamic inverse, direct lift control, MAGIC CARPET software

CLC Number: