Research on longitudinal dynamics safety boundary of carrier-based aircraft arresting

摘要

The carrier-based aircraft landing and arrest process is complex and nonlinear, and includes the coupling effect between the aircraft and the arresting system. This process has many uncertain factors, which create difficulties in landing safety analysis. To improve the accuracy and effectiveness of landing safety analysis, this paper presents some studies. Selecting a certain type of carrier-based aircraft as the research object, a dynamic model of the collision and rebound of the arresting hook was established, and the accuracy of the model was verified using laboratory test results. Subsequently, a dynamic model of the arresting hook following the engagement of the arresting cable was established, and the ideal contact area of the arresting hook was obtained by combining it with the dynamic constraint equation. Afterward, the longitudinal safety envelope of carrier-based aircraft during landing and arrest, which is the set of all states where the aircraft can safely land and arrest, was obtained based on a numerical iteration method. In addition, a reasonable safety evaluation index is proposed to quantitatively analyze the effect of the key parameters, including the sinking velocity, pitch angle and horizontal velocity, on landing and arrest safety. Based on the response surface method (RSM), the effects of the structural parameters of the landing gear on the safe envelope are discussed, and meaningful conclusions are obtained. This analysis method and its results provide a reference for top-level parameter design of carrier-based aircraft and safety research on arresting systems.