main rotor

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(Aviation) The assembly of large rotating airfoils (blades) on a helicopter that produce the lift to support the helicopter in the air.

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Noun

main rotor - rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air

rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine"

rotary wing, rotor blade - the long airfoil that rotates to provide the lift that supports a helicopter in the air

rotor head, rotor shaft - the axis around which the major rotor of a helicopter turns

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anti-torque rotor
rotary wing

rotor
rotor blade

rotor head
rotor shaft

tail rotor

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