US Pat. No. 10,919,583

ACTIVE DRAG-REDUCTION SYSTEM AND A METHOD OF REDUCING DRAG EXPERIENCED BY A VEHICLE

Ogab Ltd., Somerset (GB)...

1. An active drag-reduction system for a vehicle in which at least one turbulent and/or low pressure region is formed adjacent to the vehicle when moving at a speed above a predetermined threshold speed, the active drag-reduction system configured to reduce the at least one turbulent and/or low pressure region when activated, the active drag-reduction system comprising:at least one first fluid outlet located on the vehicle adjacent to the at least one region;
at least one second fluid outlet located on the vehicle adjacent to the at least one region and spaced from the at least one first fluid outlet, the second fluid outlet arranged to eject fluid substantially toward an interior of the at least one region; and
a fluid supply system configured to:
provide fluid at a first pressure and/or first ejection velocity to the at least one first fluid outlet; and
provide fluid at a second pressure and/or second ejection velocity to the at least one second fluid outlet, wherein the second pressure and/or second ejection velocity is greater than the first pressure and/or first ejection velocity, respectively.