Engine, Mitsubishi Kasei 21, Ha 32 Model 21, Radial 14 Engine
Usage Conditions May ApplyUsage Conditions ApplyThere are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.
IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections.
More -
https://iiif.si.eduView ManifestView in Mirador Viewer
Mitsubishi was the first and largest series producer of Japanese engines during World War II, with a 1937 Pratt & Whitney arrangement possibly contributing to this success. The Kasei (Mars) was the largest of the manufacturer’s original 14-cylinder radials, and was widely used in various models. It was geared, supercharged, and had optional water methanol injection. Between 1941 and 1945, a total of 9,323 engines of all models of Kasei 20 series were manufactured.
This Model 21 powered the Mitsubishi G4M twin engine attack bomber (Allied Code Name Betty) built in larger numbers than any other Japanese bomber; it was used from the beginning of the war and also transported the Japanese surrender delegation. A total of 2,446 G4M and the similar G6M1 aircraft were built.
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
Mitsubishi Jukogyo K. K. Physical Description
Type: Reciprocating, 14 cylinders, 2 rows, radial, air cooled
Power rating: 1,141 kW (1,530 hp) at 2,450 rpm
Displacement: 42.1 L (2,570 cu in.)
Bore and Stroke: 150 mm (5.91 in.) x 170 mm (6.69 in.)
Weight: 725 kg (1,598 lb)
Missing generator, magneto caps, data plate, exhaust manifold; intake dented.
Imperial Japanese Navy
Dimensions
Diameter 134 cm (52.75 in.), Length 170.5 cm (67.125 in.) Materials
Steel, Aluminum, Textile, Leather, Rubber, Preservative coating, Copper, Paint, Magnesium Inventory Number
A19710048000
Credit Line
Transferred from the U.S. Navy, Lakehurst Naval Air Station, Lakehurst, New Jersey
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
For more information, visit the Smithsonians Terms of Use.