G0500602 Improvements of Aerodynamic Characteristics of Car by Delta-type Wicker and Wing

Abstract

The delta-type wicker is an aerodynamic device for lift reduction, and the present study aims to investigate quantitatively aerodynamic characteristics of a car model with a delta-type wicker by wind-tunnel experiments. As the results, as the delta-type wicker is made higher, the down force (negative lift) is increased, but at the same time the drag is also increased When using the wicker together with a wing, however, the down force is further enhanced and the drag is restrained, compared with the case without a wing. The reason is considered that the wing suppresses the longitudinal vortices on the trunk deck and changes the wake to upward direction.