If the right aileron is moving down, what is the expected movement of the right wing?

When the right aileron moves down, it increases the lift on that wing because the downward movement of the aileron increases the camber of the wing. As a result, the right wing experiences more lift compared to the left wing, which is likely experiencing a corresponding upward movement of its aileron.

This difference in lift between the two wings causes the right wing to rise, resulting in a rolling motion to the right. The response of the wing to the downward movement of the aileron is a fundamental aspect of aileron function in aircraft design and operation, where one aileron moving down will indeed lift that side of the aircraft.

Understanding this principle is crucial for flight engineers and helps in predicting the aircraft's behavior during flight maneuvers.