Tests of 2-blade, adjustable pitch, counterrotating tandem propellers, adjusted to absorb equal power at maximum efficiency showed that efficiency of this type was from 0.5% to 4% greater than that of 4-blade propeller and not appreciably inferior to that of 2-blade propeller.


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    Title :

    Tandem airplane propellers


    Additional title:

    Nat Advisory Committee Aeronautics -- Tech Note


    Contributors:


    Publication date :

    1939


    Size :

    10 pages


    Remarks:

    16 supp sheets, Bibliography


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




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