Pressure data at 90 percent blade radius for a helicopter main rotor with RC-SC2 blade sections was obtained. Concurrent measurements were made of vehicle flight state, performance and some rotor loads. The test envelope included hover, level flight from about 65 to 144 knots, climb and descent, and collective fixed maneuvers. Airfoil pressure distributions obtained in flight agree with those theoretical calculations for two dimensional, steady flow.


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    Title :

    A Flight Investigation of Blade-Section Aerodynamics for a Helicopter Main Rotor Having RC-SC2 Airfoil Sections


    Contributors:

    Publication date :

    1982


    Size :

    163 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English