Analysis model and numeral simulation for civil plane ditching

A numerical simulation for water landing impact of a plane is presented. The Lagrange finite element equations and Euler control equations are solved by explicit integration method and Euler finite volume method. The general coupling method is used to realize fluid-mechanical interaction calculation. The dytran is applied to the numerical simulation. The pressure of plane landing in water reaches maximum value at the initial stage, and then some small pressures follow. Under the same conditions, the maximum pressure of the elastic model is smaller than that of the rigid model. The maximum pressure on plane ditching with attack angle of 5° is smaller than that with attack angle of 3°. The maximum pressure and the happened place change when attack angles change.