Research Progress on Aircraft Landing Gear Dynamics Modeling and Simulation Methods

The dynamics of an aircraft landing gear, as a key system to ensure flight safety, are critical to the takeoff, landing and taxiing of an aircraft. With the evolution of modern aircraft design towards higher performance and complexity, the landing gear system has shown an increasing complexity, which covers many subsystems such as cushioning system, wheels, brakes, retracts, and controls. This paper summarizes the latest research progress in the analysis of aircraft landing gear dynamics, including the structural form of landing gear, the current research status of the dynamics problem, and the application of simulation technology. By reviewing the research results of core dynamics problems such as landing gear retracting mechanism, drop shock dynamics, and pendulum vibration, the paper reveals the progress of simulation research on such dynamics problems. In addition, the paper discusses the application of an integrated analysis system using theoretical analysis, 3D modeling, simulation analysis and experimental verification in landing gear design and optimization. Although the current research has made remarkable achievements, there is still much room for development in landing gear dynamics problems in complex environments and landing gear dynamics problems under the influence of multi-field coupling and complex roadway environments. The review in this paper aims to provide directions for future research on aircraft landing gear dynamics and to promote further optimization and innovation in aircraft landing gear design.