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Aircraft

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Aerofoil   The shape of an aircraft’s wing, designed to cause lift. A wing is curved on its upper side so that, as the plane moves, the air flowing over the wing is made to move faster than that flowing under it. This creates lower pressure on the upper side than on the lower side, resulting in lift. 

Ailerons   Control surfaces on the wings of an aeroplane. They can be raised or lowered in order to make the plane roll.

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