Abstract:The main wheel coordinated turning technology can effectively improve the ground maneuverability of aircraft, reducing the additional lateral torque of main landing gear and the ground turning radius of heavy-duty aircraft during turning. However, the design method of turning angle control law for front wheel and main wheel to realize this technology is not clear at present. In this paper, the force of main landing gear is taken as the constraint condition. Then the angle relationship between front wheel and main wheel at different coasting speeds is calculated, and it is selected in segments and discretized in the full speed range. Based on this, the cooperative turning control law for front wheel and main wheel is designed. The simulation analysis on the principle prototype are carried out, and the results show that the control law can effectively reduce the peak value of the torque sum of main landing gear on both sides while improving the ground maneuverability. The design method presented in this paper has certain theoretical guiding significance for the design of compound turning control law of multi-gear train ground carrier equipment.