Built by Nakajima as the first prototypes built. Assigned to the Imperial Japanese Navy (IJN). Ready for ground testing by June 30, 1945.
During July 1945, disassembled and delivered to Kisarazu Airfield, reassembed and readied for flight testing.
On August 7, 1945 took off from Kisarazu Airfield piloted by Lieutenant Commander Susumu Takaoka for a 20 minute test flight, the only concern was the length of runway required for takeoff.
On August 11, 1945 a second test flight at Kisarazu Airfield was attempted with Rocket Assisted Take Off (RATO) units under each wing. The RATO unit's alignment were miscalculated and the test pilot believed that they had not fired and shut off the main engines. Powered by the rockets, the Kikka ran off the runway and crash, tearing off the landing gear and crashed into Tokyo Bay.
The aircraft could not be repaired before the Pacific War ended. Ultimate fate unknown, likely scrapped or otherwise disappeared.
National Air and Space Museum - Nakajima Kikka (Orange Blossom)
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January 9, 2018