Abstract:

Vehicles that operate at altitudes close to the sea surface by taking advantage of the ground effect enable us to overcome the hydrodynamic force exerted by the water on the vehicle, allowing us to reach general aviation speeds, while also making it possible to carry more cargo than an aircraft by taking advantage of the ground effect. In this article, the NACA 4412 profile, which has a wide usage area, high lift/drag ratio and a flat bottom surface, has been chosen as a wing concept for a hoverwing vehicle that operates by making use of ground effect. Turbulence modeling was carried out at flight altitudes where it would be exposed to ground effect with a speed of 22.22 m/s and Re=4,068x106. While the height to the ground was decreased by 0.1 starting from the height of 1 chord, the angle of attack was increased up to 10 degrees in increments of 2 degree, starting from 0 degrees, and computational fluid dynamics analyzes were performed in 2D in the Realizable K-Epsilon experimental model with the help of ANSYS Fluent. As a result of the analyzes made, the highest lift/drag value was obtained as 50 at an angle of attack of 4 degrees and at a height corresponding to 0.1 chord value.