Abstract: To solvethe problem that a certain type of aircraft couldn't turn easily during taxiing,a research was carried out concerning the dynamic taxiing process simulation of the aircraft when only differential brake could be used for turning. After analyzing the aircraft turning process, and applying the software of Matlab, dynamic model of the turning process was established in the Simulink environment. After running the model, studying and analyzing the simulation results, the correspondence between the differential brake turning requirements and the performance of the wheel and brake control system was obtained. Usingthe simulation method,the turning difficult fault is reappeared,the mechanism of fault was clear, and the direction of the improvement was oriented. The researching result has great reference value for the aircraft turning performance and landing gear system entire designing..

Key words: aircraft taxiing turning, differential brake, dynamic simulation, brake system