The Horten H.IX, RLM designation Ho 229 (often called Gotha Go 229 due to the identity of the chosen manufacturer of the aircraft) was a late-World War II prototype fighter/bomber designed by Reimar and Walter Horten and built by Gothaer Waggonfabrik. It was the first pure flying wing powered by a jet engine. It was given the personal approval of German Luftwaffe Reichsmarschall Hermann Göring, and was the only aircraft to come close to meeting his "3x1000" performance requirements, namely to carry 1000 kg of bombs a distance of 1000 km with a speed of 1000 km/h. Its ceiling was 15,000 meters (49,213 ft).
The first jet powered flight of the H.IX was made on 2 February 1945. Two further test flights were made between 2 and 18 February 1945. The H.IX reportedly displayed very good handling qualities, with only moderate lateral instability (a typical deficiency of tailless aircraft). There are reports that during one of these test flights, the H.IX undertook a simulated "dog-fight" with a Messerschmitt Me 262, the first operational jet fighter and that the H.IX outperformed the Me 262.
Source: Wikipedia, "Horten Ho 229", available under the CC-BY-SA License.
As Described In
Secret Weapons of the Luftwaffe: Perhaps the World War II aircraft that was farther ahead of its time than any other, the Gotha Go 229 went into production much too late to see any action. Although the Ho IX V2 prototype had only logged two hours of flying time, the design was put into production at the Gotha factory for Luftwaffe evaluation, and was designated the Gotha Go 229. Several production versions, including two-seat all-weather fighters and trainers, as well as single-seat A-0 fighter-bombers, were nearing completion when the Gotha factory was captured by the U.S. Army in April 1945. If Germany had prolonged the war, the Go 229A-0 would probably have entered Luftwaffe service in late 1945 or early 1946.