Bell 206 JetRanger Tail Rotor for Helicopter 3D model

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A helicopter's initial challenge was torque reaction when attempting to hover, due to Newton's third law. Single main rotor designs face equal and opposite torque reactions causing unwanted rotation. Counter-rotating rotors were a common solution, canceling torque with no power loss. Co-axial, tandem, and intermeshing systems balance torque reactions, maximizing engine power for lifting rotors. Tail rotors also address this issue by adjusting blade pitch through foot pedal control, enabling helicopter rotation in desired directions.