Ha-26 Aircraft Engine

Photograph of Japanese Ha-26-II aircraft engine

Ha-26. U.S. Navy. Via Francillon (1979).

Photograph of Japanese Zuisei 13 aircraft engine

Zuisei  13. U.S. Navy. Via Francillon (1979).

The Mitsubishi Ha-26 was also known as the Army Type 99 radial  Model 2.  It was known in Navy service as the Zuisei ("Holy Star"). It was an air-cooled 14-cylinder double-row radial engine with a nominal power rating of 900 horsepower (671 kW). It was essentially a scaled down Ha-112.

Zuisei 11
870 hp (takeoff)
850 hp (7500 feet)
649 kW (takeoff)
634 kW (2300 m)
Joint designation was [Ha-31] 11
Zuisei 13
840 hp 626 kW Also known as the MK2 and the [Ha-31] 13
870 hp 549 kW
Zuisei 12
940 hp
700 kW
Zuisei 15. Added a higher gear supercharger.

Variants of this engine were used on the Ki-46-I "Dinah", the Ki-51 "Sonia", and the LO "Thelma". The Navy used it on the A6M1 "Zero", the E7K "Alf", the Ki-30 "Ann" and the F1M2 "Pete".


Francillon (1979)

Goodwin and Starkings (2017)

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