There are several theories that are used to describe the flight of an airplane (but till now still have to argue that the descriptions are not yet complete.)The theory of the motion of air (the rules of the bear League, nun) that air moving faster than it is under pressure by the wing of the plane, there is a curve at the top and a smooth flat bottom. The air that moves through the South Wing of the airplane will have a lower speed at the top of the wings plane. The pressure under the wing of the airplane, so higher pressure above the wing plane caused a strong lift. Make the plane.The theory of the strong force, except that Newton to lift that makes the plane had caused the wings moving with speed, do. Clashes between the angle (angle of attack: English) with air and raise the torque (moment) of the air wing of the air force, was flowing down below (the behaviour of air was forced to flow down below called "wash down" uk: downwash)
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