A combination of subscale wind tunnel model tests and full-scale coast-down and highway fuel consumption tests have been conducted on baseline and low-drag tractor-trailer configurations. Fuel savings calculated for the low-drag configuration, based on the model drag data or the full-scale drag data, correlate quite well with fuel savings obtained from over-the-road tests at highway speeds. Sub-scale drag tests for flow-vane and boattail devices provided drag reductions of about 48 percent and 15 percent, respectively, for bus- or motor-home-type vehicles. Full-scale boattail drag data are also presented.


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    Title :

    A Summary of NASA Dryden's Truck Aerodynamic Reasarch


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Truck and Bus Meeting and Exposition ; 1982



    Publication date :

    1982-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







    A Summary of NASA Drydens Truck Aerodynamik Research

    Saltzman,E.J. / NASA Ames Res.Cent.,Dryden Flight Res.Fac.,Edwards,US | Automotive engineering | 1982