The aerodynamic drag characteristics of a passenger car are typically defined by a single parameter, the drag coefficient at zero yaw angle. While this has been acceptable in the past, it may not allow a true comparison between vehicles with regard to the impact of drag on performance, especially fuel economy. An alternative measure of aerodynamic drag should take into account the effect of non-zero yaw angles and some proposals have been made in the past, including variations of wind-averaged drag coefficient. For almost all cars the drag increases with yaw, but the increase can vary significantly between vehicles. In this paper the effect of various parameters on the drag rise with yaw are considered for a range of different vehicle types. The increase of drag with yaw is shown to be an essentially induced drag, which is strongly dependent on both side force and lift. Shape factors which influence the sensitivity of drag with yaw are discussed.


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    Titel :

    Aerodynamic Drag of Passenger Cars at Yaw


    Weitere Titelangaben:

    Sae International Journal of Passenger Cars. Mechanical Systems
    Sae Int. J. Passeng. Cars - Mech. Syst


    Beteiligte:
    Howell, Jeff (Autor:in)

    Kongress:

    SAE 2015 World Congress & Exhibition ; 2015



    Erscheinungsdatum :

    2015-04-14


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Aerodynamic Drag of Passenger Cars at Yaw

    Howell, Jeff | British Library Conference Proceedings | 2015


    Aerodynamic drag of passenger cars at yaw

    Howell,J. / Loughborough Univ.of Technology,GB | Kraftfahrwesen | 2015


    Study on the Aerodynamic Drag Reduction of Passenger Cars

    M. Nishimori / K. Harigane / K. Yanagimoto | NTIS | 1985


    Necessity and Premises for Reducing the Aerodynamic Drag of Future Passenger Cars

    Buchheim,R. / Deutenbach,K.R. / Lueckoff,H.J. et al. | Kraftfahrwesen | 1981


    Necessity and Premises for Reducing the Aerodynamic Drag of Future Passenger Cars

    Lückoff, H.-J. / Deutenbach, K.-R. / Buchheim, R. | SAE Technical Papers | 1981