Full-scale fuel consumption and drag tests were performed on a conventional cab-over-engine tractor-trailer combination and a version of the same vehicle with significant forebody modifications. The modified configuration had greatly increased radii on all front corners and edges of the tractor and a smooth fairing of the modified tractor top and sides extending to the trailer. Concurrent highway testing of the two configurations showed that the modified design used 20% to 24% less fuel than the baseline configuration at 88.5 km/hr (55 mph) with near-calm wind conditions. Coastdown test results showed that the modified configuration reduced the drag coefficient by 0.43 from the baseline value of 1.17 at 88.5 km/hr (55 mph) in calm wind conditions.


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    Title :

    Reduced truck fuel consumption through aerodynamic design


    Contributors:

    Published in:

    Publication date :

    1977-10-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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    STEERS, L.L. / SALTZMAN, E.J. | AIAA | 1977



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