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Nakajima Ha-20 Hikari

The Nakajima Hikari (Light) was a nine-cylinder, air-cooled, radial aircraft engine developed in Japan for Navy use during World War II by the Nakajima Aircraft Company. It was a development of the Nakajima Kotobuki and Wright Cyclone. In Army use it was known as the Ha-20.

Specifications
- Type: 9-cylinder air-cooled radial aircraft piston engine
- Bore: 160 mm (6.30 in)
- Stroke: 180 mm (7.09 in)
- Displacement: 32.57 L (1,987.7 in3)

Variants
- Hikari 3 - 770 hp (574 kW)
- Hikari 1 - 820 hp (611 kW)

Applications

- Aichi D1A (D1A2)
- Aichi D3A (D3A1 first prototype)
- Mitsubishi F1M
- Nakajima A4N
- Nakajima B5N1 (B5N1 only)
- Nakajima C3N
- Yokosuka B4Y (B4Y1 fourth plane onward)

Source:
Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989.
Wikipedia

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