Object Details
Physical Description
Type: Reciprocating, 18 cylinders, W-type, liquid cooled, supercharged
Power rating: 1,864 kW (2,500 hp) at Unknown rpm
Displacement: 47.5 L (2,898 cu in.)
Bore and Stroke: 145 mm (5.71 in.) x 160 mm (6.30 in.)
Weight: 1,196 kg (2,633 lb) Approximate
Summary
In 1934, the Japanese Navy began development of an 18-cylinder, 40 degree angle W-type engine known as the 671 kW (900 shp) Model 94. More powerful versions of this engine were later undertaken, including the YE2A which started development around 1937-38.
A derivative of the YE2A was this W-type engine known as Ken No. 3 (believed to be the YE2H, also Ha 73 Model 01) began its development around 1942, and construction is believed to have been finished about March 1944. The purpose of this design was to promote aircraft streamlining and thus speed. The intended airframe application is unknown, but the engine design is for a pusher installation. The engine was experimentally tested, but there is no record indicating that it was test flown.
None of the high power liquid-cooled engines under development by Japan reached operational status by war’s end, and, following the war, the focus of international engine development turned toward turbine engines.
Credit Line
Transferred from the U.S. Air Force Museum
Date
Circa World War II
Inventory Number
A19670123000
Restrictions & Rights
Usage conditions apply
Type
PROPULSION-Reciprocating & Rotary
Materials
Steel, Aluminum, Copper, Magnesium, Rubber, Textile, Preservative coating
Dimensions
Height 114.3 cm (45 in.), Width 111.8 cm (44 in.), Depth 246.4 cm (97 in.)
Country of Origin
Japan
See more items in
National Air and Space Museum Collection
Data Source
National Air and Space Museum
Link to Original Record
Record ID
nasm_A19670123000