. . "rotor consisting of a rotating airfoil on the tail of a single-rotor helicopter; keeps the helicopter from spinning in the direction opposite to the rotation of the main rotor"@en-us . "04385799-n"^^ . . "0"^^ . "104385799"^^ . "103466701"@en-us . "anti-torque rotor"@en-us . . "104215964"@en-us . . . . "tail rotor"^^ . "0"^^ . . . "tail rotor"@en-us . . .