THE feathering propeller meets two fundamental needs in airline operation which the constant-speed propeller cannot meet, the authors explain. First, by stopping the rotation of an engine and propeller in flight, it protects the airplane from catastrophic vibrations occasionally set up by mechanical failures of engine and propeller. And the second fundamental need, they state, is that the feathering propeller decreases the drag of an inoperative propeller, thereby increasing the performance of a multiengined airplane with one or more engines inoperative. For these reasons, they point out, the feathering propeller has been accepted by leading airlines as the answer to their immediate propeller needs.In this paper the full-feathering principle is explained as applied in two distinct propeller designs.Performance figures are given for twin-engined air-transport planes with and without feathering propellers, and the importance of the feathering propeller in the operation of four-engined airplanes and its beneficial effect upon their twin and triple-engine performance are pointed out. Propeller icing, pertinent flight test data, the value of the feathering propeller in studying propeller ice in flight, and future propeller design trends, also are discussed by the authors.


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    Title :

    Feathering Propellers in Airline Transport Operation


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Pre-1964 SAE Technical Papers ; 1906



    Publication date :

    1939-01-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Feathering propellers in airline transport operation

    Beard, M.G. / Fuller, E.W. | Engineering Index Backfile | 1939


    Full-feathering propellers

    McCoy, H.M. | Engineering Index Backfile | 1938


    Full-feathering propellers

    McCoy, H.M. | Engineering Index Backfile | 1938