Truck afterbody drag reducing device

摘要

This invention relates to devices which reduce the aerodynamic drag of trucks. This invention provides means for reducing truck afterbody drag, or drag attributable to the trailing edge region of a truck body/trailer box. More specifically, this invention provides means for permitting rear side panels and rear closure members of a truck afterbody to be repositioned in such a manner that the equivalent aerodynamic blunt base area of the truck afterbody is reduced, and the aerodynamic drag coefficient attributable to the truck afterbody is reduced. The left and right rear side panels of the truck afterbody can be moved to positions wherein the average span between the trailing edges of the left and right rear side panels is reduced compared with the average span between the leading edges of the left and right rear side panels, thus creating an effective taper to the truck afterbody.