Effect of Dimples on Aircraft Wing

Dimples behave as protrusions on the surface of the wing. These protrusions generate vortices that reduce the flow separation on the suction side of the wing. This delays and reduces the chord-wise boundary layer growth rate. The work in this paper describes the experimental analysis carried out on a symmetrical wing which will reduce the drag and delay the flow separation point over the upper surface wing by using the dimple effect. The experimental results support the dimple effect by increasing L/D ratio which also increases the maneuverability of an aircraft. This also provides the maximum aerodynamic efficiency which enhances the performance for an aircraft. The airfoil is tested under different angle of attack (0˚, 5˚, 10˚ and 15˚) at the inlet velocity of 18m/s and 33m/s. Experimental testing is carried out in the low speed open type subsonic wind tunnel. Citation: Prasath M S, J.J. College of Engineering and Technology, Trichy, Tamilnadu; Irish Angelin ,Apollo Engineering College, Chennai, Tamilnadu. "Effect of Dimples on Aircraft Wing." Global Research and Development Journal For Engineering 25 2017: 234 - 242.