This 2-stroke cycle powerplant of 1912 is the earliest American supercharged aeronautical engine still in existence. A vane-type supercharger is located between the crankcase and the accessory section.
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
1912
Country of Origin
United States of America
Type
PROPULSION-Reciprocating & Rotary
Designer
Joseph J. Murray
Manufacturer
Murray-Willat Company
Physical Description
Type: Rotary, 6 cylinders, air-cooled, 2-stroke, supercharged
Power rating: 52 kW (70 hp) at 1,200 rpm
Displacement: 6.14 L (374.52 cu in.)
Bore and Stroke: 100 mm (3.94 in.) x 130 mm (5.12 in.)
Weight: 118 kg (260 lb)
Dimensions
3-D: 78.7 × 73.7cm, 117.9kg (31 × 29 in., 260lb.)
Support: 147.3 × 95.3 × 49.5cm (58 in. × 37 1/2 in. × 19 1/2 in.)
Materials
Metal
Inventory Number
A19640634000
Credit Line
Gift of Miss Vera C. Murray.
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
For more information, visit the Smithsonians Terms of Use.