Final Answer:
To counteract torque-induced turning, a helicopter uses an anti-torque system, commonly implemented through a tail rotor or fenestron.
Step-by-step explanation:
Torque-induced turning is a phenomenon in helicopters caused by the rotation of the main rotor. As the main rotor spins in one direction, an equal and opposite torque reaction tries to rotate the helicopter in the opposite direction. To counteract this effect, helicopters are equipped with an anti-torque system. The most common implementation is a tail rotor or fenestron at the rear of the helicopter. These devices generate thrust in the opposite direction to the torque, effectively preventing uncontrolled spinning.
The tail rotor or fenestron is typically controlled by the pilot through the foot pedals in the cockpit. By adjusting the pitch of the tail rotor blades, the pilot can control the amount of thrust produced, maintaining stable and controlled flight despite the torque-induced forces.