升力型潜水飞行器水空动力学特性研究

Research on the aerodynamic /hydrodynamic characteristic of lifting submersible aircraft

水空两相介质物性的巨大差异为潜水飞机的水下潜航和空中飞行带来诸多难题,本文选择升力型航行器为研究对象,采用数值仿真手段研究其飞行和潜航动力学特性,模拟结果说明:在低速航行时,存在匹配的速度区间使得升力型航行器在空中和水下的各动力学参数随攻角的变化趋势相似并且数值相近,航行器获得相似的飞行和潜航环境;通过对水下高速航行的可行性的探讨,获悉升力型航行器不适宜在水下高速潜航,需采用变体方式改变构型来提高航行器的动力学性能。

Many difficulties are caused by the huge physical-property difference between atmosphere and liquid when flying both in air and water. A lifting submersible aircraft is designed to research the influence about the aerodynamic and hydrodynamic characteristics with relevant velocity in different media.Some results are achieved by applying Computational Fluid Dynamics（ CFD） method： on low speed,it is certain the kinetics coefficient in different medium will be approach if voyage by relevant speed range,so the vehicle can be voyaging on the similar conditions; on high speed,the lifting vehicle is unsuited for underwater voyaging,it must morphing to enhance the adaptive ability in different media.