Aircraft landing gear system dynamic modeling and simulation

Aircraft interacts with the ground through landing gear system, while taxiing down the runway. Owing to the changed forces and moments acted on the aircraft, the landing gear shocks, and consequently results in the shift of the aircraft Euler angle. In order to study the aircraft taxiing characteristics, considering the aircraft' s attitude and rotation, the aircraft landing gear system mathematical model is built including tire model, ole-pneumatic shock strut model, landing gear walking model and main wheel brake device model. Considering ABS (anti-skid brake system) control and nose wheel manipulation, the landing gear system model is applied to aircraft six degree of freedom model and been simulated. The simulation results show that the aircraft landing gear system mathematical model established is correct. Moreover, it establishes the foundation to the research on the aircraft taxiing characteristics.