Effect of Leading-Edge Shapes in NACA2421 Aerofoil with Different Angles of Attacks

The profile and aerofoil geometry of the blade affect the aerodynamic effectiveness of a wing or wind turbine. Generally, wing/wind turbine manufacturing purely focuses on materials, reliability, blade performance and cost. In research this work, to investigate the three different shapes of leading-edge the following radius such as Elliptical, Circular and Conical shapes on the aerodynamics efficiency is considered for the wind turbine or even the airfoils of the wing. In accordance with the current research, NACA2421 airfoil is considered for the study. In the wind tunnel, the impact of three leading-edge profile airfoils has been examined with the help of three component force balance instruments at various angles of attack such as 0°, 5°, 10°, 15°, −5°, −10°, −15° respectively. The target of the task is to find out the lift coefficient and drag coefficient at different leading-edge radii of NACA 2421 aerofoil and compared the results of the Elliptical, Circular, Cone leading edge of the aerofoil with standard baseline airfoil.