An isosceles triangle twisted into a screw surface about its axis is proposed as a propeller for transonic flight speeds. The purpose is to attain the drag reduction associated with large sweepback in a structurally practicable configuration. A mathematical theory for such a propeller is presented. Calculations taking account of wave and skin-friction drag indicate a net efficiency of the order of 80 percent at Mach number 1.1. A 12-foot propeller is estimated to be able to absorb 18,500 brake horsepower at 840 miles per hour at sea level.


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    Titel :

    Transonic Propeller of Triangular Plan Form


    Beteiligte:
    H. S. Ribner (Autor:in)

    Erscheinungsdatum :

    1947


    Format / Umfang :

    43 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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