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由于海水和空气物理性质存在巨大差异,航行器很难以单一外形满足在两种环境下的航行要求。为此,提出一种通过改变外形来实现水空介质跨越的航行器,并通过计算流体力学对其空中和水中两种外形的气动/水动特性进行研究。仿真结果表明,通过改变外形,航行器能够同时满足水下航行和空中飞行的要求。水下航行时,航行器在较小的仰角范围内通过收缩机翼减小阻力;空中飞行时,通过展开机翼增大升力。
Due to the vast differences in the physical properties of seawater and air, it is difficult for a craft to meet its navigation requirements in both environments with a single profile. To this end, we propose a vehicle that changes its appearance to achieve airspace-spanning of airborne media and study the aerodynamic / hydrodynamic characteristics of both airborne and waterborne forms by computational fluid dynamics. Simulation results show that by changing the shape, the craft can meet the requirements of both underwater and aerial flight. During underwater voyages, the craft reduces drag by contracting the wing over a smaller elevation range; during aero flown, the lift is increased by deploying the wing.