US Patent 7883051 Ducted propulsion vector system

A ducted propulsion vector system that vectors thrust generated from ducted fan powered aircraft. The system has hinged duct flaps may be vectored from +10 degrees up and turned through −90 degrees downward. Vectored downward 90 degrees, the flaps vector thrust enabling vertical/short takeoff and landing of an aircraft. Hover control is facilitated by internal mounted vanes in line of the thrust stream. The duct flaps are transitioned at operator's input to enable the aircraft to achieve forward flight.