Airfoil
Videos
An airfoil or aerofoil is a streamlined body that is capable of generating significantly more lift than drag. Wings, sails and propeller blades are examples of airfoils. Foils which work in a similar
Lift and drag curves for a typical airfoil
An airfoil section is displayed at the tip of this Denney Kitfox aircraft, built in 1991.
Airfoil profile of a Kamov Ka-26 helicopter's lower rotor blade
Angle of attack
Videos
In fluid dynamics, angle of attack is the angle between a reference line on a body and the vector representing the relative motion between the body and the fluid through which it is moving. Angle of a
Airfoil
…lift (perpendicular to the freestream velocity) and drag (parallel to the freestream velocity). The lift on an airfoil is primarily the result of its angle of attack. Most foil shapes require a positive angle of attack to generate lift, but cambered airfoils can generate lift at zero angle of attack. Airfoils have…
Angle of attack of an airfoil
Coefficients of drag and lift versus angle of attack. Stall speed corresponds to the angle of attack at the maximum coefficient of lift (CLMAX)
Su-27M / Su-35 at high angle of attack