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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (8): 525841-525841.doi: 10.7527/S1000-6893.2021.25841

• Article • Previous Articles     Next Articles

Automatic landing technology considering lever arm effect and flexural deformation

LIANG Lei1,2, XIAO Jing1, ZHAN Guang1, SU Dalin1   

  1. 1. AVIC Shenyang Aircraft Design and Research Institute, Shenyang 110031, China;
    2. Chinese Aeronautical Establishment Graduate School, Yangzhou 225002, China
  • Received:2021-04-15 Revised:2021-05-08 Published:2021-05-31

Abstract: The shipboard components of the Joint Precision Approach and Landing System (JPALS) are designed to provide automatic landing capability for the carrier-based aircraft in the final approach phase. However, the landing accuracy of the carrier-based aircraft is reduced due to the existence of ship's lever arm effect and flexible deformation. In this paper, a nonlinear parameter error model is developed based on satellite guided automatic landing. The model is used with the ship deck motion and longitudinal flight control model to evaluate the influence of ship structure deflection and attitude uncertainty on aircraft landing accuracy. The results show that the lever arm effect and flexible deformation have a significant impact on the landing accuracy. Using the error model proposed and the flight control model, the accuracy of the landing point can be effectively controlled within the landing standard.

Key words: joint precision approach and landing system (JPALS), lever arm effect, flexural deformation, nonlinear, landing accuracy

CLC Number: