To analyse the vertical dynamic characteristics of the aircraft towing system under different constraints on the nose landing gear wheels of the aircraft during the towing slip-out mode,a dynamic model of the towing s...To analyse the vertical dynamic characteristics of the aircraft towing system under different constraints on the nose landing gear wheels of the aircraft during the towing slip-out mode,a dynamic model of the towing system considering the constraints between the clamping mechanism and the aircraft nose landing gear wheels was established based on the general towing system dynamic model.On this basis,an analysis was conducted to determine whether considering the aircraft wheel constraints affects the vertical vibration acceleration of the towing vehicle and the nose landing gear in low-speed(10 km/h)and high-speed(40 km/h)operating conditions.With the consideration of constraints at both ends of the aircraft wheels,the vertical acceleration of the towing vehicle’s centre of mass increased by 153%and 172%at low speed and high speed,respectively,compared to not considering the aircraft wheel constraints.Additionally,with the consideration of constraints at both ends of the aircraft wheels,the vertical acceleration of the nose landing gear’s centre of mass decreased to 20%and 57%at low speed and high speed,respectively,compared to not considering the aircraft wheel constraints.An analysis of the vertical vibration acceleration of the towing vehicle under different wheel constraint conditions found that the Root Mean Square(RMS)value of the vertical vibration acceleration of the towing vehicle’s centre of mass was minimized when the clamping angles of the clamping mechanism to the nose landing gear wheels were 63◦and 64◦,respectively.Under this clamping angle,the influence of the clamping forces at both ends of the clamping mechanism on the vertical vibration acceleration of the towing vehicle was minimal.The research results provide valuable reference for the direct constraints between the clamping mechanism and the nose landing gear wheels in the aircraft towing slip-out system.展开更多
基金supported by the the Fundamental Research Funds for the Central Universities,China(Grant No.3122022066)Postgraduate Research and Innovation Fund,China(Grant No.2022YJS056)National Natural Science Foundation of China(Grant No.U2033208).
文摘To analyse the vertical dynamic characteristics of the aircraft towing system under different constraints on the nose landing gear wheels of the aircraft during the towing slip-out mode,a dynamic model of the towing system considering the constraints between the clamping mechanism and the aircraft nose landing gear wheels was established based on the general towing system dynamic model.On this basis,an analysis was conducted to determine whether considering the aircraft wheel constraints affects the vertical vibration acceleration of the towing vehicle and the nose landing gear in low-speed(10 km/h)and high-speed(40 km/h)operating conditions.With the consideration of constraints at both ends of the aircraft wheels,the vertical acceleration of the towing vehicle’s centre of mass increased by 153%and 172%at low speed and high speed,respectively,compared to not considering the aircraft wheel constraints.Additionally,with the consideration of constraints at both ends of the aircraft wheels,the vertical acceleration of the nose landing gear’s centre of mass decreased to 20%and 57%at low speed and high speed,respectively,compared to not considering the aircraft wheel constraints.An analysis of the vertical vibration acceleration of the towing vehicle under different wheel constraint conditions found that the Root Mean Square(RMS)value of the vertical vibration acceleration of the towing vehicle’s centre of mass was minimized when the clamping angles of the clamping mechanism to the nose landing gear wheels were 63◦and 64◦,respectively.Under this clamping angle,the influence of the clamping forces at both ends of the clamping mechanism on the vertical vibration acceleration of the towing vehicle was minimal.The research results provide valuable reference for the direct constraints between the clamping mechanism and the nose landing gear wheels in the aircraft towing slip-out system.
