Final answer:
Differential control on an aileron system means that the up travel of one aileron on one wing is more than the down travel of the aileron on the opposite wing to adjust for wash-in and wash-out.
Step-by-step explanation:
Differential control on an aileron system means that the up travel of one aileron on one wing is more than the down travel of the aileron on the opposite wing to adjust for wash-in and wash-out.
.This means that when the pilot wants to roll the aircraft to the right, for example, the aileron on the right wing will move up more than the aileron on the left wing moves down. This differential movement helps to counteract adverse yaw, which is the tendency of the aircraft to yaw in the opposite direction of the desired roll.
For example, let's say you are flying an aircraft and you want to roll the aircraft to the right. The aileron on the right wing will move up, creating more lift and decreasing the drag on that wing. At the same time, the aileron on the left wing will move down, decreasing the lift and increasing the drag on that wing. As a result, the aircraft rolls to the right, with the differential control providing the necessary control and stability.