Numerical Study of Rear Fuselage Suction Force of Aircraft Ditching
Aircraft ditching is a complex multi-discipline and multi-stage problem.In the impact and taxiing stages of ditching,the suction generated by the shape of the fuselage directly affects the aircraft's taxiing stability and ditching safety.With the development of numerical simulation technology for ditching,the analysis method based on numerical simulation technology has become an effective means to deal with the problem of aircraft ditching.However,there is no good numerical simulation method for suction at present.In order to quantitatively analyze the formation mechanism of tail suction during crash landing,this paper adopts the numerical simulation constrained model method to study the change rule of stern suction and the evolution of tail negative pressure region by changing the attitude Angle,draft depth and sailing speed of Boeing 737 aircraft.
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