When the control wheel is moved left, how does the left aileron respond?

When the control wheel is moved to the left, the left aileron moves up. This action is fundamental to the operation of ailerons in aircraft, as they are designed to control the roll of the aircraft. The aileron on the wing that the pilot is moving the control wheel towards (in this case, the left wing) deflects upward, while the aileron on the opposite wing (the right wing) moves downward.

The upward motion of the left aileron reduces the lift on that wing, while the downward motion of the right aileron increases lift on the right wing. This differential lift causes the aircraft to roll to the left. The movement of the ailerons is a key mechanism in maneuvering an aircraft and is crucial for maintaining control during flight.