An Experimental Study on the Lift and Drag Characteristics of a Wing with a Helical Ring Wing Tip

나선 고리형 날개끝을 가진 날개의 양항특성에 관한 실험적 연구

A reduction of induced drag is an important problem in order to save fuels. In this study, the aerodynamic characteristics of wing tip devices to reduce induced drag, such as end plate, plain ring, helical ring wing tip device, was experimentally investigated in a low speed wind tunnel. The experimental results showed that the wing model with a helical ring wing tip device reduced a induced drag and increased lift-drag ratio.