Editing Flight control surfaces (section)

====Ailerons====
{{Main|Adverse yaw}}
The ailerons primarily cause roll. Whenever lift is increased, [[induced drag]] is also increased so when the aileron control is moved to roll the aircraft to the left, the right aileron is lowered which increases lift on the right wing and therefore increases induced drag on the right wing. Using ailerons causes [[adverse yaw]], meaning the nose of the aircraft yaws in a direction opposite to the aileron application. When moving the aileron control to bank the wings to the left, adverse yaw moves the nose of the aircraft to the ''right''. Adverse yaw is most pronounced in low-speed aircraft with long wings, such as gliders. It is counteracted by the pilot using the rudder pedals. [[Differential ailerons]] are ailerons which have been rigged such that the downgoing aileron deflects less than the upward-moving one, causing less adverse yaw.