Which statement about yaw control is true?

Which statement about yaw control is true?

• A. It is independent of tail rotor
• B. It primarily uses the cyclic
• C. It primarily uses the anti-torque pedals
• D. It is controlled by the elevator

Answer: (C)

Yaw control is the rotation of the helicopter about its vertical axis. In a typical single-rotor helicopter, the main rotor’s torque tends to spin the fuselage in the opposite direction. The pilot counteracts this and steers by using the anti-torque pedals, which adjust the tail rotor thrust (or an equivalent anti-torque system). By increasing or decreasing tail rotor thrust, a yawing moment is created, turning the nose left or right. The cyclic tilts the rotor disk to generate forward, backward, or sideways movement, but it is not used primarily to control yaw. The elevator is not used for yaw in most helicopters, as pitch control and lift are handled by other controls.

Yaw control is the rotation of the helicopter about its vertical axis. In a typical single-rotor helicopter, the main rotor’s torque tends to spin the fuselage in the opposite direction. The pilot counteracts this and steers by using the anti-torque pedals, which adjust the tail rotor thrust (or an equivalent anti-torque system). By increasing or decreasing tail rotor thrust, a yawing moment is created, turning the nose left or right. The cyclic tilts the rotor disk to generate forward, backward, or sideways movement, but it is not used primarily to control yaw. The elevator is not used for yaw in most helicopters, as pitch control and lift are handled by other controls.