Funryu (奮龍, Funryū) were a series of surface-to-air anti-aircraft missiles developed in Japan at the end of the Second World War.
The missile's development in the late stages of the war was plagued by organizational problems and cancelled before becoming operational.
In 1945, a few samples of SAM Funryu were created and tested, but due to the surrender of the Japanese Empire, had not been finalized.
[3] Funryu 4, a much more conventionally shaped missile with four equally sized tail fins and elevons, would be guided primarily by radio control from the ground.
Funryu 4 was a high-speed design that could be flown directly at their target along the line of sight, making surface-to-air use possible.