Airfoil

An airfoil (in American English, or aerofoil in British English) is the shape of a wing or blade (of a propeller or ship's screw or sail) as seen in cross-section. It is used to provide lift or downforce, depending on its application. Subsonic-flight airfoils have a characteristic shape with a rounded leading edge, followed by a sharp trailing edge, and often with camber.

See also

• Lift (force)
• Angle of attack
• Coefficient of lift
• Stall
• Supercritical airfoil
• Foil (fluid mechanics)
• NACA 0015