Patent ID: 7281680

Claim:
An aircraft equipped with only a single propeller and only a single duct, capable of short or vertical take-off and landing (S/VTOL) as well as an efficient horizontal cruise mode comprising: a fuselage or cabin section where said fuselage transverse cross section has a symmetrical air foil shape where the sharp edge forms the bottom of the fuselage and is attached to the top section of said single duct; a propulsion assembly comprising a single propeller installed horizontally inside the single duct, said propeller having a propeller shaft, where said shaft is mounted vertically into the bottom of said fuselage, via bearings and bearing housing, where the aircraft center of gravity is located; a pair of wings mounted on opposing lateral sides of said single duct, said wings having left and right ailerons for roll control during horizontal flight; an aft extension of said single duct forming a tail surface, which supports an elevator to control the pitch during horizontal flight, said tail surface also supports at least one vertical tail surface to provide for directional stability and to control yaw during horizontal flight; a set of landing gears one installed in the front section of said fuselage, and a pair of gears installed in the rear section of said tail surface.