A Design of Experiments (DOE) approach to wind tunnel testing of performance automobiles is being explored at the Langley Full-Scale Tunnel. Traditional methods for wind tunnel testing have focused on conventional “one factor at a time” (OFAT) methods which have difficulty in unearthing valuable interactive effects between variables. In an effort to better characterize a vehicle's aerodynamic behavior as a function of common variables, an exploratory study was completed using the DOE methodology for a common sedan racecar. A two-level factorial designed experiment with center points produced regression models for the lift, drag, and lift to drag ratio as a function of ride height, grille porosity, and yaw angle. In addition, model adequacy and uncertainty levels were described.


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    Title :

    Use of Designed Experiments in Wind Tunnel Testing of Performance Automobiles


    Additional title:

    Sae Technical Papers


    Contributors:
    Hall, Brian (author) / Landman, Drew (author) / Simpson, James (author) / Sumner, Tim (author)

    Conference:

    Motorsports Engineering Conference & Exhibition ; 2002



    Publication date :

    2002-12-02




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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