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Among the most successful early engines marketed in the United States were those designed and built by aviation pioneer and inventor Glenn Curtiss. Early Curtiss engines were designed to power motorcycles. The first Curtiss aircraft engines were air cooled but, to achieve higher power, Curtiss began to develop liquid-cooled engines.
With the advent of World War I, Curtiss concentrated its production on the famous 67 kW (90 hp) OX-5 engine which powered the JN-4D “Jenny” trainer aircraft. The OXX-6 engine was an improved version of the OX-5. Differences from the OX-5 included two magnetos (instead of one) for greater dependability and a slightly larger cylinder bore giving an additional 7.5 kW (10 horsepower). During World War I, the OXX-6 was used on such Curtiss aircraft as the Model N9 hydroplane. Together, the OX-5 and OXX-6 were the most extensively used American-built engines during World War I and in the following decade.
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 1916
Country of Origin
United States of America
Type
PROPULSION-Reciprocating & Rotary
Manufacturer
Curtiss Aeroplane and Motor Company Physical Description
Type: Reciprocating, 8 cylinders, V-type, water cooled
Power rating: 75 kW (100 hp) at 1,400 rpm
Displacement: 9.3 L (567 cu in.)
Bore and Stroke: 108 mm (4.3 in.) x 127 mm (5 in.)
Weight: 181.9 kg (401 lb)
Dimensions
Length: 144.1 cm (56.75 in.), Height: 93.3 cm (36.75 in.), Width: 75.6 cm (29.75 in.) Materials
steel, Aluminum, copper, Rubber, Wood, Phenolic, Ceramic, brass, Textile Inventory Number
A19710916000
Credit Line
Transferred from the U.S. Navy
Data Source
National Air and Space Museum
Restrictions & Rights
Open Access (CCO)
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