Keeps nose from swinging side to side.

Keeps nose from swinging side to side.

• A. Vertical stabilizer
• B. Horizontal stabilizer
• C. Wings
• D. Elevators

Answer: (A)

Preventing the nose from swinging side to side is about yaw stability. The vertical stabilizer is the fin at the tail that provides directional stability, resisting side-to-side yaw caused by winds or disturbances. The rudder, which is attached to the vertical stabilizer, is the control surface you use to actively yaw the aircraft left or right when you want to. The other parts have different roles: the horizontal stabilizer controls pitch (nose up or down) with the elevators; the wings mainly generate lift and contribute to roll stability, not keeping the nose from yawing.

Preventing the nose from swinging side to side is about yaw stability. The vertical stabilizer is the fin at the tail that provides directional stability, resisting side-to-side yaw caused by winds or disturbances. The rudder, which is attached to the vertical stabilizer, is the control surface you use to actively yaw the aircraft left or right when you want to.

The other parts have different roles: the horizontal stabilizer controls pitch (nose up or down) with the elevators; the wings mainly generate lift and contribute to roll stability, not keeping the nose from yawing.