Analysis of Dimpled Wing of an Aircraft

  Vishal Kaushik,  Manoj Mahore,  Sandeep Patil

The main objective of aircraft aerodynamics is to enhance the aerodynamic characteristics and maneuverability of the aircraft. This enhancement includes the reduction in drag and stall phenomenon. The dimpled airfoil has comparatively lesser drag as compared to plain airfoil. Introducing dimples on the aircraft wing will create turbulence by creating vortices which delays the boundary layer separation resulting in decrease of pressure drag and also increase in the angle of stall. In addition, wake reduction leads to reduction in acoustic emission. The objective is to improve the aircraft maneuverability by delaying the flow separation point at stall and thereby reducing the drag by applying the dimple effect over the aircraft wing. A computational analysis has done to know the dimple effect on aircraft wing, using NACA 0018 airfoil. Dimple shapes of Semi-sphere inward and outward are selected for the analysis; airfoil is tested under the inlet velocity of 18m/s at different angle of attack (4˚, 7˚, and 10˚). This analysis favors the dimple effect by increasing L/D ratio and thereby providing the maximum aerodynamic efficiency, which provides the enhanced performance for the aircraft.

Keywords- boundary layer, stalling, flow separation

Unique Identification Number - IJEDR1803068
Page Number(s) - 382-395
Pubished in - Volume 6 | Issue 3 | August 2018
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Vishal Kaushik,  Manoj Mahore,  Sandeep Patil,   "Analysis of Dimpled Wing of an Aircraft", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.6, Issue 3, pp.382-395, August 2018, Available at :http://www.ijedr.org/papers/IJEDR1803068.pdf