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U.S. Navy. Via Francillon (1979).
The Nakajima Homare ("Honor") was an air-cooled 18-cylinder double-row radial engine. It used the same size cylinders as the Sakae (bore of 130mm and a stroke of 150mm.) Though somewhat mechanically unreliable, later models became increasingly important towards the end of the war. The engine was notable for having a relatively small diameter, which reduced drag.
| Model |
Horsepower |
Wattage |
Notes |
|---|---|---|---|
| 11 |
1900 hp |
1417 kW |
Also known as
the HA45 and the [Ha-45] 11. Notorious for its lack of mechanical reliability. |
| 12 |
1,825
hp (takeoff) 1,670 hp (7900 feet) 1,560 hp (21,500 feet) |
1361 kW(takeoff) 1245 kW (2,400m) 1163 kW (6,550m) |
Also known as the NK9C and the [Ha-45] 12. |
| 21 |
1990 hp (takeoff) 1870 hp (6560 feet) 1625 hp (20,000 feet) |
1484 kW (takeoff) 1394 kW (2000m) 1212 kW (6100m) |
Also known as
the NK9H and the [Ha-45] 21. Known as Ha-45 in Army service. |
This engine powered the B7A
"Grace", the C6N "Myrt",
the Ki-84 "Frank", the N1K1 "George", and the P1Y "Frances".
References
Goodwin and
Starkings (2017)
Gunston (2006)
Peattie (2001)
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