Which component primarily influences the control of torque in a helicopter?

The tail rotor is the component that primarily influences the control of torque in a helicopter. When the main rotor turns, it generates torque in the opposite direction, which would cause the helicopter body to rotate. The tail rotor counteracts this torque by producing thrust in the horizontal plane, allowing the pilot to maintain control over the helicopter's yaw axis. By adjusting the angle of the tail rotor’s blades, the pilot can manage the amount of counter torque generated, thus stabilizing the helicopter's orientation during flight.

The main rotor, while crucial for lift and overall flight control, does not directly counteract the torque produced. The elevator and ailerons are primarily used for controlling pitch and roll, respectively, but they do not influence torque management directly as the tail rotor does. This is why the tail rotor is essential for a helicopter's stability and maneuverability in the presence of the significant torque generated by the main rotor.