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Ha-13a Aircraft Engine

The Hitachi Ha-13a was a low-power air-cooled nine-cylinder radial engine that was essentially a supercharged Ha-13. It was known as the Type 98 in Army service and as the Amakaze 21 or GK2E in Navy service. The joint designation was [Ha-23]21, indication a bore of 140 mm and a stroke of 130 mm.

Model
Horsepower
Wattage
Notes
Ha-13a
510hp (takeoff)
 470hp (5580 feet)
380 kW (takeoff)
350 kW (1700m)


The Ha-13 powered the Ki-36 "Ida", Ki-54 "Hickory", Ki-55 "Ida", Ki-59 "Theresa", and Ki-79.

References

Francillon (1979)

Goodwin and Starkings (2017)
Gunston (2006)



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