Abstract: A vehicle includes a propulsion system using one or more impellers as opposed to propellers. The impellers impart circumferential and radial velocity components to the working fluid, which may be air or water. The air is deflected by counter-vortex chambers in a shroud to convert the circumferential and radial velocity to an axial velocity aligned with the axis of rotation of the impeller.

Abstract: A vehicle includes a propulsion system using one or more impellers as opposed to propellers. The impellers impart circumferential and radial velocity components to the working fluid, which may be air or water. The air is deflected by counter-vortex chambers in a shroud to convert the circumferential and radial velocity to an axial velocity aligned with the axis of rotation of the impeller.

Abstract: An impeller includes a lower dome having a curved outer surface. Disposed on the curved outer surface of the lower dome is a plurality of blade. The blades are formed to define an inner curved surface and an outer curved surface, each blade having a leading edge and a terminal edge. The impeller comprises an an upper dome, the inner surface of which is mounted on the outer curved surfaces of the blades; The upper dome has an annular opening formed therethrough. The annular opening of the upper dome is coaxially positioned with an annular bore in the lower dome. The annular bore is sized for receiving a rotary shaft. A plurality of flow compartments or chambers are defined in the conjunction of the lower dome, the plurality of blades, and the upper dome. An embodiment of the impeller comprises a rotary shaft in connection between at least the annular bore of the lower dome on one end and a motor on the other.