Which control surface located on the wings' tips is used to help turning?

Which control surface located on the wings' tips is used to help turning?

• A. Elevators
• B. Rudder
• C. Ailerons
• D. Flaps

Answer: (C)

Ailerons, located on the outer trailing edges of the wings near the tips, are the surfaces that create roll. When you move the control, the two ailerons deflect in opposite directions—one goes down while the other goes up. The wing with the down aileron increases lift and rises, while the wing with the up aileron decreases lift and drops. This difference rolls the aircraft around its front-to-back axis (the longitudinal axis). Once the aircraft banks, gravity and lift cause the aircraft to turn along a curved path as the lift vector tilts into the turn. Elevators affect pitch, the rudder controls yaw, and flaps mainly increase lift for takeoff and landing, not for turning. So the wing-tip surface used to help turning is the aileron.

Ailerons, located on the outer trailing edges of the wings near the tips, are the surfaces that create roll. When you move the control, the two ailerons deflect in opposite directions—one goes down while the other goes up. The wing with the down aileron increases lift and rises, while the wing with the up aileron decreases lift and drops. This difference rolls the aircraft around its front-to-back axis (the longitudinal axis). Once the aircraft banks, gravity and lift cause the aircraft to turn along a curved path as the lift vector tilts into the turn. Elevators affect pitch, the rudder controls yaw, and flaps mainly increase lift for takeoff and landing, not for turning. So the wing-tip surface used to help turning is the aileron.