The Nakajima J9Y Kikka was a Japanese twin engine jet combat aircraft developed during World War II. It was the only jet aircraft Japan made during the war that was able to take off under its own power, but never saw combat.
The Kikka was inspired by Germany's Messerschmitt Me 262, which Japan's German air attaché witnessed the flight trials of in 1944. Design work was done by Kazuo Ohno and Kenichi Matsumura, and began in September 1944 when the Imperial Japanese Navy asked Nakajima to create a jet powered attack aircraft. The first prototype made its maiden flight on August 7, 1945, from Kisarazu Naval Air Force Base. Four days later this prototype crashed. Another four days later Japan surrendered to the Allies, and development of the Kikka ended with the one example having flown and around 25 in various stages of production. Postwar, several were taken back to the United States for testing, one of which is the only surviving J9Y left. It is currently being restored for display at the National Air and Space Museum.
As the Kikka never got past the prototype stage, it didn't have many variants, and the few that did exist were not named. Among them was a two-seater training version, a reconnaissance version, and a fighter armed with two 30 mm cannons.
- Powerplant: 2 Ne-20 axial-flow turbojets
- Top speed: 433 mph
- Range: 586 miles
- Ceiling: 39,370 feet
- Crew: 1
- Empty weight: 5,071 lbs
- Length: 26 ft 8 in
- Wingspan: 32 ft 9 in
- Height: 9 ft 8 in
- Armament: 2 30 mm cannons; 1 bomb weighing up to 1,764 lbs