Study On The Hydroplaning Behavior Of Aircraft Under The Interaction Of Tire And Wet Pavement

Wet pavement seriously affects take-off and landing safety of aircrafts,and for the huge economic losses and casualties the civil aviation accidents caused,take-off and landing safety of aircraft on the wet pavement is an urgent problem,so aircraft's hydroplaning has become one of the hot research issues in the field of aviation.Through finite element software ABAQUS,pavement surface friction performance tests and theoretical analysis model,the critical hydroplaning speed of aircrafts,the interaction between aircraft tire and wet pavement and the aircrafts' sliding posture were researched.The research contents and results are as follows:1)?According to the actual pavement condition and the mainstream aircrafts,the critical hydroplaning speed finite element of aircraft tire model on the grooved pavement was established,and by which the influence of aircraft type,pavement condition and tire groove on the critical hydroplaning speed of the aircraft were analyzed,and the classical NASA formula of critical hydroplaning speed was corrected here also.2)?According to the evaluation method of pavement surface friction and measured data of the pavement friction,the pavement surface friction of the domestic large airport runway was analyzed.The interaction model between tire and wet pavement was established based on the measured pavement frictions,the force characteristics of the tire on wet pavement were researched,and the variation laws of the wet pavement friction were obtained.3)? Through the analysis of force characteristics of tire on wet pavement,friction performance,tire force characteristics and other factors were considered in the analysis of the critical hydroplaning speed.Then,the critical hydroplaning speed warning model was established,and the critical hydroplaning speed ranges of different aircrafts in different weather were obtained.4)? Based on the above analysis,the theoretical model of aircraft whole glide was established considering the tire force characteristic.After the analysis of the factors affecting the glide attitude in the wet pavement,the yaw distance and angles in aircraft taxiing were obtained in different weather.