ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,626, issued on May 20, was assigned to Airbus Helicopters Deutschland GmbH (Donauworth, Germany).
"Rotorcraft with a ducted tail rotor supported by a stator" was invented by Rupert Pfaller (Riemerling, Germany) and Tobias Ries (Nordendorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotorcraft with at least one main rotor and a fuselage, comprising: a tail boom connected to the fuselage, the tail boom extending from the fuselage toward a duct-type portion; a shroud provided at the duct-type portion and forming a transverse duct; at least one ducted tail rotor rotatably arranged in the transverse duct, wherein the at least one ducted tai...