Patent ID: 11858562
Assignee: ENERGY HORIZON LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 21:
22. A drag reduction device for use adjusting air over and around a land vehicle as the land vehicle is driven on a surface, said drag reduction device comprising:
a housing having an inner housing portion coupled adjacent to an exterior surface and a pair of side housing portions extending from said inner housing portion, said housing defining a first opening and a second opening; and
a fan assembly contained within said housing, said fan assembly comprising:
a central rotatable shaft rotatable around an axis of rotation;
a plurality of fan blades coupled to and extending radially outwardly from said central rotatable shaft;
one or more plasma-controlled air foils pivotally coupled to each of said pair of side housing portions and positioned within said second opening, each one of said one or more plasma-controlled air foils configured to be movable to any position between and including a non-clocked position and a clocked position; and

a controller coupled to said central rotatable shaft or to said one or more plasma-controlled air foils, or to both said central rotatable shaft and said one or more air foils, and configured for controlling air flow through the fan assembly to maximize drag efficiency at the particular vehicle speed,
wherein said controller directs said DC or AC voltage source to generate a high voltage pulse through each of said embedded electrode and said surface electrode to generate a plasma field in proximity to a surface of said one or more plasma-controlled air foils.