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Kotobuki Aircraft Engine


Photograph of Japanese Kotobuki 1 KAI 1 aircraft engine

U.S. Navy. Via Francillon (1979).

The Nakajima Kotobuki ("Congratulations") was an air-cooled nine-cylinder radial engine based on the Bristol Jupiter. It was known in Army service as the Ha-1.

Model
Horsepower
Wattage
Kotobuki 2 KAI 2
630 hp (takeoff)
460 hp (9843 feet)
469 kW (takeoff)
343 kW (3000m)
Ha-1b
710 hp (takeoff)
780 hp (9185 feet)
529 kW (takeoff)
582 kW (2800m)

The Kotobuki was used in the D1A "Susie", E8N "Dave", K3M "Pine", Ki-27 "Nate", and Ki-34 "Thora".

References

Francillon (1979)
Gunston (2006)



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