Patent ID: 7318620
Filing Date: 2008-01-15
Classification: B62D

Abstract:
1. An aerodynamic drag reduction device for use on a trailing vehicle comprising: a plurality of surfaces attached to a forward facing exterior surface of the trailing vehicle; wherein the surfaces are substantially equally spaced apart from each other and positioned substantially symmetrically with respect to the vertical plane of symmetry of the trailing vehicle; wherein the surfaces are aligned so as to be substantially parallel to the longitudinal axis of the trailing vehicle; wherein the surfaces have a thickness of less than 1 inch and extend out from the exterior surface of the trailing vehicle a distance of 10 to 50 percent of the longitudinal gap distance between the forward facing exterior surface of the trailing vehicle and the aft facing exterior surface of a leading vehicle; whereby the surfaces generate vortices of substantially equivalent strength and rotational velocity to reduce air pressure on the forward facing exterior surface of the vehicle and reduce drag.