In the presence of ambient winds, almost all present vehicles experience an increase in aerodynamic drag, which in turn causes an increase in energy consumption. However, it is possible to design a vehicle body shape that passively uses the wind to decrease aerodynamic drag and hence lower fuel consumption. This paper describes a scale-model wind tunnel investigation that studied vehicle-like shapes which exhibit a drag reduction, rather than a drag penalty, in crosswinds. The aerodynamic behavior of very-low-aspect-ratio, truncated, vertical airfoil sections close to the ground was studied to obtain a general idea of the behavior of these vehicle-like shapes. Force and surface pressure studies established that a significant drag reduction at low yaw angles could be achieved by attached flow over the leeward airfoil nose. A demonstration of the use of the airfoil shape was carried out to show how the poor yaw performance of a representative Semi-Trailer transport may be improved by the use of a plan-view airfoil-shaped cab.


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    Titel :

    Airfoil plan-view body shapes to reduce drag at yaw


    Weitere Titelangaben:

    Aerodynamische Form des Kraftfahrzeugs zur Minderung des Luftwiderstands bei Seitenwind


    Beteiligte:
    Retzlaff, R.N. (Autor:in) / Hertz, P.B. (Autor:in)

    Erschienen in:

    SAE-Papers ; Mar ; 1-10


    Erscheinungsdatum :

    1990


    Format / Umfang :

    10 Seiten, 11 Bilder, 12 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Airfoil Plan-View Body Shapes to Reduce Drag at Yaw

    Hertz, P. B. / Retzlaff, R. N. | SAE Technical Papers | 1990


    Airfoil plan-view body shapes to reduce drag at yaw

    Retzlaff,R.N. / Hertz,P.B. / Univ.of Saskatchewan,CA | Kraftfahrwesen | 1990


    Supersonic Transitional Airfoil Shapes of Minimum Drag

    A. V. Fedorov / N. D. Malmuth | AIAA | 1997


    Supersonic transitional airfoil shapes of minimum drag

    Fedorov, A. / Malmuth, N. | AIAA | 1997


    Supersonic Transitional Airfoil Shapes of Minimum Drag

    Fedorov, A.V. | Online Contents | 1997