A wind tunnel test program was conducted at the Langley Full Scale Tunnel (LFST) to evaluate the performance of five passive drag reduction configurations on a modern straight truck at full scale. Configurations were tested in a build-up fashion with results representing a cumulative effect. Tested configurations include a front valance, a front box fairing, a boat-tail, an ideal side-skirt, and a practical side-skirt. Configurations were evaluated over a nominal 9 degree yaw sweep to establish wind averaged drag coefficients using SAE J1252. Genuine replicate yaw sweeps were used in an uncertainty analysis. Results show up to 28% improvement in wind-averaged drag coefficient and that significant gains can be made in straight truck fuel economy, even at non-highway speeds.


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    Titel :

    Drag Reduction of a Modern Straight Truck


    Weitere Titelangaben:

    Sae Int. J. Commer. Veh


    Beteiligte:
    Landman, Drew (Autor:in) / Cragun, Matthew (Autor:in) / McCormick, Mike (Autor:in) / Wood, Richard (Autor:in)

    Kongress:

    Commercial Vehicle Engineering Congress ; 2011



    Erscheinungsdatum :

    13.09.2011


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Understanding Practical Limits to Heavy Truck Drag Reduction

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    Practical devices for heavy truck aerodynamic drag reduction

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