Research On The Dynamics Control And Simulation Of Aircraft During Landing And Taxiing

The dynamic control and simulation in landing and taxiing of aircraft are important innovations to modern and new airplane. In this paper, it took a certain model aircraft as the study object, it built up a full mechanics model in landing and taxiing, it adopted the semi-active control method, designed a system of semi-active control of landing gear, built up the mathematics model and simulation model of semi-active control of landing gear's buffer, described the structure design to the opposite with semi-active landing gear buffer. According to the characteristic of the magnetorhelogical fluids, this paper introduced the design method of magnetorhelogical fluids damper. It used the type RD-1005 produced by the Lord company to design a magnetorhelogical fluids damper to suit this type of landing gear together with the mechanics model of landing gear, it. It built up the model of nonlinear hysteresis and studied its function by an experiment. It simulated the semi-active and passive control systems and drew their dynamics curves in the process to lading and taxiing of aircraft. By comparing and analyzing, we can see that the semi-active control system significantly reduced the change value more than the passive one during landing and taxiing and the degree of force reduction increases with the sink rate. These results were obtained analytically. The control function of landing and taxiing can be validly adjusted by the electric voltage. The result of the numeral simulation expressed that this kind of semi-active control method to reduce dynamic load is very beneficial in reducing structural fatigue design and increasing ride comfort for passengers and crew.