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compound helicopter
compound helicopterA helicopter with an auxiliary propulsion system which provides thrust in excess of that which the rotor(s) alone could produce, thereby permitting increased forward speeds; wings may or may not be provided to reduce the lift required from the rotor system.compound helicopter
compound helicopterA helicopter with an auxiliary propulsion system, which provides thrust in excess of that the rotor(s) alone could produce, thereby permitting increased forward speeds. Wings may, or may not, be provided to reduce the lift required from the rotor system. |