Journal Press India^®

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This paper focuses on aerodynamic characteristic ofaircraft wing with and without winglet at low subsonic flow.NACA 653-218 profile was applied on four models including elliptical, semicircular and straight winglet. CFD analysis was performed to compare the lift to drag ratio in these models. Spallart Allmarus turbulence model and 3D unstructured tetrahedral mesh was used to compute the flow around the winglet prototype. It was found that elliptical winglet gave maximum lift to drag ratio.

Keywords

Airfoil; Winglet; Induced Drag; Wingtip Vortex; Lift and Drag Coefficient.

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