The patent relates to a propulsion system for the vertical take-off and landing (VTOL) aircraft having tiltable tandem mounted ducted propeller propulsion units. The propulsion units are connectable together to form a closed fluid path when the ducts are positioned for horizontal forward flight and thereby present a one propeller disc area. When the ducts are tilted for vertical flight, the individual propulsion units become disconnected, thereby presenting double the thrust area desirable for vertical flight.


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    Title :

    Ducted Propulsion Units for VTOL Aircraft


    Contributors:

    Publication date :

    1968


    Size :

    6 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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