This object is on display in the Boeing Aviation Hangar room at Steven F. Udvar-Hazy Center in Chantilly, VA.
Collection Item Summary:
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.
Collection Item Long Description:
National Air and Space Museum
Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum
Transferred from the U.S. Navy
- Bearings - Steel backed copper lead
- Crankshaft - Ni/Cr Steel
- Cylinder blocks - Silicon aluminum alloy
- Ignition leads - Fabric covered
- Pistons - Similar to 24S aluminum
Length 215.0 cm (84 5/8 in.), Width 71.2 cm (28 1/16 in.), Height 106.0 cm (41 3/4 in.)
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Country of Origin
- 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)
PROPULSION-Reciprocating & Rotary