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The Atsuta 31 was a licensed version of the Daimler-Benz DB 601A liquid-cooled, inverted V-12 engine. The Atsuta reduced an aircraft’s frontal area, increasing aerodynamic efficiency. Aichi manufactured 873 Atsuta series engines during World War II.
The Atsuta was the only liquid-cooled engine used operationally by the Japanese naval air force. The Ha 60 Model 31 powered the Aichi M6A1 Seiran, a submarine-borne floatplane bomber, and early versions of the Yokosuka D4Y2 series Suisei carrier-based dive bomber and reconnaissance aircraft.
Date
1945
Country of Origin
Japan
Type
PROPULSION-Reciprocating & Rotary
Manufacturer
Aichi Aircraft Company (Aichi Kokuki KK) Designer
Daimler-Benz Aktiengesellschaft Physical Description
Type: Reciprocating, Inverted V, 12 cylinders, liquid cooled, supercharged, fuel injected
Power rating: 1,044 kW (1,400 hp) at 2,800 rpm
Displacement: 33.9 L (2,069 cu in)
Bore and Stroke: 150 mm (5.91 in.) x 160 mm (6.30 in.)
Weight: 715 kg (1,576 lb)
Dimensions
Length 215.0 cm (84 5/8 in.), Width 71.2 cm (28 1/16 in.), Height 106.0 cm (41 3/4 in.) Materials
Bearings - Steel backed copper lead
Crankshaft - Ni/Cr Steel
Cylinder blocks - Silicon aluminum alloy
Ignition leads - Fabric covered
Pistons - Similar to 24S aluminum Inventory Number
A19710927000
Credit Line
Transferred from the U.S. Navy
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
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