AFAST Practice Exam 2026 – Complete Test Prep Resource

When a helicopter is in a hover, the tail rotor plays a crucial role in countering the torque produced by the main rotor. The main rotor creates a rotating force that tends to spin the helicopter body in the opposite direction. The tail rotor generates thrust to stabilize and counteract this rotational motion. When the tail rotor exerts thrust, it produces a lateral force that causes the helicopter to drift in the direction that the thrust is directed.

For instance, if the tail rotor pushes to the right, the aircraft will begin to drift to the right in order to maintain equilibrium. This effect is essential for maintaining directional control and stability during hovering and low-speed maneuvers. Properly managing this thrust allows the pilot to maneuver the helicopter even when it is not in forward flight. Understanding this behavior is vital for effective helicopter piloting, especially in maintaining stability during various flight conditions.