Mitsubishi Kasei 21, Ha 32 Model 21, Radial 14 Engine

Object Details

Physical Description: Type: Reciprocating, 14 cylinders, 2 rows, radial, air cooled; Power rating: 1,825 kW (1,825 hp) at 2,600 rpm; Displacement: 42.1 L (2,570 cu in); Bore and Stroke: 150 mm (5.91 in.) x 170 mm (6.69 in.); Weight: 780 kg (1,720 lb); missing carburetor, spark plugs, exhaust collector ring, generator, starter; spark plug wires damaged; on stand.
Summary: 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.

Circa World War II

Materials: Steel; Aluminum; Rubber; Leather; Magnesium?; Cadmium Plating; Adhesive; Copper Alloy; Stainless Steel; Ceramic; Plastic; Paint
Dimensions: Overall: 175.3 × 134 × 134cm, 780kg (69 × 52 3/4 × 52 3/4 in., 1719 9/16lb.); Storage (On Stand): 182.9 × 157.5 × 154.9cm (72 × 62 × 61 in.)

National Air and Space Museum

GUID (Link to Original Record): http://n2t.net/ark:/65665/nv99649f73f-a7a0-4666-abf1-ae452e423562