What happens to the outer and inner wings during a Dutch roll?

During a Dutch roll, the dynamics of the aircraft cause the outer wing to travel faster than the inner wing. This occurs due to the rolling motion and the resulting differential in the airflow over the wings. As the outer wing moves faster, it experiences an increase in lift due to the greater amount of airflow over it. This increase in lift helps maintain altitude but is accompanied by a side-to-side oscillation of the aircraft.

The inner wing, conversely, moves slower and may experience less lift, which can lead to the tendency for the aircraft to roll in the opposite direction. This coupled motion is characteristic of the Dutch roll phenomenon, where the aircraft exhibits a combination of yawing and rolling behaviors. Understanding this relationship between the wings during a Dutch roll helps pilots manage the stability of the aircraft during oscillations.