The Aichi Watch and Electric Machinery Company of Japan was established in 1899, and first built Lorraine engines for the Japanese Navy under license. In 1931 it began manufacturing its own designs in 1931, with the name Atsuta derived from its factory.

The Ha 60 Model 32 powered the World War II Japanese Aichi M6A1 Serian, Navy Special Attack Bomber, a submarine-borne float aircraft. It also powered the Yokosuka D4Y2 series Suisei Navy carrier-based dive bomber and reconnaissance aircraft (Allied Code Name Judy).

The Atsuta Model 20 and 30 series engines were the only liquid-cooled engines used operationally by the Japanese Naval Air Force. Between 1943 and 1945, the Japanese built 873 Atsuta 20 series engines. Partially enclosed in the cowling of an Aichi D4Y Suisei, the artifact is a license-built version of the German Daimler-Benz DB 601A.

 Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date Circa World War II Country of Origin Japan Type PROPULSION-Reciprocating & Rotary Manufacturer Aichi Aircraft Company (Aichi Kokuki KK)
 Physical Description Type: Reciprocating, 12 cylinders, Inverted Vee, Liquid-cooled 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 Height 103 cm, 40.56 in., Width 71.2 cm, 28.06 in., Depth 213.2 cm, 83.94 in.
 Materials Aluminum
Steel
Magnesium Alloy
Copper Alloy
Rubber
Natural Fabric
Paint
Wood
Phenolic Resin
Leather
 Inventory Number A19731575000 Credit Line Transferred from the U.S. Navy, Naval Supply Center, Cheatham Annex, Williamsburg, Virginia Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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