Nakajima Ha 15 or Ha 39, W-18 Engine
Object Details
- Manufacturer
- Nakajima Hikoki K. K.
- Physical Description
- Type: Reciprocating, 18 cylinders, W-type, liquid cooled, supercharged
- Power rating: 1,491 kW (2,000 hp) at (Unknown) rpm
- Displacement: 51.1 L (3,116 cu in.)
- Bore and Stroke: 146 mm (5.74 in.) x 170 mm (6.69 in.)
- Weight: 431 kg (950 lb)
- Summary
- In 1934, the Japanese Navy began development of an 18-cylinder, W-type engine known as the 671 kW (900 shp) Model 94, likely a derivative of the French Lorraine aircraft engine. Later, more powerful versions of this engine were undertaken, including the YE2A, which started development around 1937-38.
- The YE2A was designed for remote installation within an aircraft fuselage, the purpose being aircraft streamlining and speed. Designed for a pusher installation, the engine was experimentally tested, but probably never test flown.
- This Nakajima engine resembles the YE2A, but was designed for tractor installation. It also resembles a version of a Hispano-Suiza engine, which had been studied by the Yokosuka Naval Air Arsenal. Mitsubishi had acquired a license in 1935 for Hispano-Suiza engines, further suggesting how the Japanese might have acquired these engines. The intended airframe application for the engine is unknown.
- Along with other Japanese engines, this artifact was collected for the purpose of technical evaluation.
- Credit Line
- Believed to have been transferred from the U.S. Army Air Forces, Wright Field, Dayton, Ohio
- Circa World War II
- Inventory Number
- A19670127000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Reciprocating & Rotary
- Materials
- Aluminum Alloys
- Ferrous Alloys
- Copper Alloys
- Adhesive Tape
- Plastics
- Wood
- Paper
- Adhesive
- Dimensions
- 3-D: 223.5 × 97.2 × 121.9cm (7 ft. 4 in. × 3 ft. 2 1/4 in. × 4 ft.)
- Storage (Stand): 8 1/4 × 4 ft. (244.5 × 121.9cm)
- 3-D: 430.9kg (950lb.)
- Country of Origin
- Japan
- See more items in
- National Air and Space Museum Collection
- National Air and Space Museum
- Record ID
- nasm_A19670127000
- Metadata Usage (text)
- Not determined
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv9b91c4d4b-e1b6-40ac-8a3f-b102f0e72dff