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rotary flight principles
lift principles
tail rotors
controls

Principles of Rotary Flight - Rotors

Rotors
The lifting force is produced by the rotors. As they spin they cut into the air and produce lift. Each blade produces an equal share of the lifting force.
Rotors

Spinning the rotor against the air causes lift, allowing the helicopter to rise vertically or hover.

Rotors

Tilting the spinning rotor will cause flight in the direction of the tilt.