直升机平静水面着水仿真分析

摘要

为研究直升机水上迫降的相关性质，采用基于SPH-FEM的流固耦合方法计算半圆筒结构着水过程中的加速度和压力，并通过与相关试验数据对比得到水体参数。随后进行直升机平静水面着水仿真计算，研究气囊对直升机着水的影响，并对直升机着水的安全性进行分析。%In order to study the nature of helicopter ditching, this paper calculated the acceleration and pressure of semi-cylindrical structure impacting onto water with the SPH-FEM method, and got the parameters of water by comparing with the experimental data. Then conducted the simulation of the helicopter impacting on calm water, studied the influence of the airbag when impacting on water, and analyzed the safety of the helicopter ditching.