The Tilt-Rotor Aeroacoustic Model (TRAM) test in the Duitse-Nederlandse Wind (DNW) Tunnel acquired blade pressure data for forward flight test conditions of a tiltrotor in helicopter mode. Chordwise pressure data at seven radial locations were integrated to obtain the blade section normal force. The present investigation evaluates the use of linear regression analysis and of neural networks in estimating the blade section normal force coefficient from a limited number of blade leading-edge pressure measurements and representative operating conditions. These network models are subsequently used to estimate the airloads at intermediate radial locations where only blade pressure measurements at the 3.5% chordwise stations are available.


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    Title :

    Estimating Blade Section Airloads from Blade Leading-Edge Pressure Measurements


    Contributors:

    Conference:

    59th American Helicopter Society Annual Forum ; 2003 ; Phoenix, AZ, United States


    Publication date :

    2003-01-01


    Type of media :

    Preprint


    Type of material :

    No indication


    Language :

    English




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