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This article refers to wings, as in flying. For other uses of the word wing please see Wing (disambiguation).

A wing is a surface used to produce an aerodynamic force normal to the direction of motion by travelling in air or another gaseous media. The first use of the word was for the foremost limbs of birds, but has been extended to include other animal limbs and man made devices.

Airbus A319. The large flaps on the wing trailing edge are easily seen.

Black-browed albatross wings.

The commonest use of wings is to fly by deflecting air downwards to produce lift, but wings are also commonly used as a way to produce downforce and hold objects to the ground (for example racing cars).

Terms used to describe aeroplane wings:

Aeroplane wings may feature some of the following: Types of wings: The amount of lift produced by a wing increases with the angle of attack (the angle between the onset flow and the chord line) but this relationship ends once the stall angle is reached. At this angle the airflow starts to separate from the upper surface, and any further increase in angle of attack gives no more lift (it may actually reduce) and gives a large increase in drag.

Wing design is complicated and very tightly associated with the science of aerodynamics.

Examples of wing use:

Constructions of the same purpose as wings, but working in liquid media instead are generally called fins with hydrodynamics as the governing science.