During rollout from a steep-banked turn, what causes the lowered aileron to create more drag than during entry?

During rollout from a steep-banked turn, what causes the lowered aileron to create more drag than during entry?

• A. Airspeed decreases during rollout, causing drag to increase.
• B. The lower wing has less lift than before.
• C. The wings angle of attack is greater as the rollout is started.
• D. Drag on both wings is equal during rollout.

Answer: (C)

The key idea is that the wing with the lowered aileron is operating at a higher angle of attack as you start the rollout. Deflecting the lower aileron downward increases the camber and lift on that wing. When lift on a wing increases, induced drag on that wing also increases. So, during rollout, the lower wing ends up producing more lift (and therefore more drag) than it did during entry, making the lowered aileron contribute more drag. The other wings don’t experience the same rise in lift and drag, and drag isn’t simply related to airspeed changes in this moment.

The key idea is that the wing with the lowered aileron is operating at a higher angle of attack as you start the rollout. Deflecting the lower aileron downward increases the camber and lift on that wing. When lift on a wing increases, induced drag on that wing also increases. So, during rollout, the lower wing ends up producing more lift (and therefore more drag) than it did during entry, making the lowered aileron contribute more drag. The other wings don’t experience the same rise in lift and drag, and drag isn’t simply related to airspeed changes in this moment.