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Developed from the Type 1466, which was used in large numbers from the beginning of World War I, this engine was manufactured by Daimler Motoren Gesellschaft in Stuttgart-Unterturkheim, Germany. On August 1, 1918, it was shipped to the Pfalzflugzeugwerke in Speyer, Germany for installation in a Pfalz fighter aircraft.
This is a rare high-altitude version of the Mercedes Daimler IIIa. To obtain more power for high-altitude operation, it was over dimensioned and supercharged. The DIII av was certificated in June 1918, and flew for the first time on September 20, 1918 in a Fokker D VII. After August 1918, aluminum pistons were used in the engine, and the compression ratio was raised to 1:6.6.
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 1918
Country of Origin
Germany
Type
PROPULSION-Reciprocating & Rotary
Manufacturer
Daimler-Benz Aktiengesellschaft Designer
Mercedes Physical Description
Type: Reciprocating, In-line, 6 cylinders, Water-cooled
Power rating: 128 kW (170 hp) at 1,450 rpm
Displacement: 14.8 L (901.32 cu. in.)
Bore and Stroke: 140 mm (5.51 in) x 160 mm (6.3 in)
Weight: 288 kg (635 lb)
Dimensions
Depth 134.6 cm (53 in.), Length 177.8 cm (70 in.), Width 71.1 cm (28 in.) Materials
Steel, Aluminum, Paint, Brass, Rubber, Preservative coating, Phenolic, Textile, Wood Inventory Number
A19840907000
Credit Line
Transferred from the U.S. Air Force Museum, Wright-Patterson AFB, Ohio
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
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