Rough conventional, smooth conventional, and laminar-flow or low- drag sections were tested. The items covered are rotor thrust for fixed power in hovering, range and endurance at cruising speed, and power required at high- forward speed. Calculations indicated that a smooth conventional section gives marked performance gains. Smaller gains are obtainable by using a low-drag section. At high speeds or loads the low-drag section is inferior to the smooth conventional section.


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    Titel :

    Effect on Helicopter Performance of Modfiications in Profile-Drag Characteristics of Rotor-Blade Airfoil Sections


    Beteiligte:

    Erscheinungsdatum :

    1944


    Format / Umfang :

    50 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch