Abstract: This invention is for rotating machines of all types such as helicopters, propellers, compressors, to be equipped with slotted tube or a tube with series of holes extending outwardly in the spanwise direction near the trailing edge of a jet-circulation-control rotor-blade tip for blowing jets of fluid in the direction opposite to the lift of the blade. Thereby achieving flow in the form of a jet sheet to abate, diffuse the undesirable blade-tip vortices and to increase the overall efficiency of the machine.

Abstract: This invention is for wings of all types, such as fixed wings for aircraft and hydrofoil boats, and rotary blades (or wings) for helicopters and turbines, to be equipped with a slotted tube, or a tube with series of holes extending outwardly in the spanwise direction near the trailing edge of the wing tip for blowing jets of fluid (such as air or water) in the direction opposite to the lift of the wing, thereby achieving flow in the form of a jet sheet to abate, diffuse and break up the undesirable wing-tip or blade-tip vortices.