Object Details
Manufacturer
Jacobs Aircraft Engine Company (Pottstown, Pennsylvania)
Physical Description
Type: Reciprocating, 7 cylinders, radial, air cooled
Power rating: 183 kW (245 hp) at 2,200 rpm
Displacement: 13.6 L (831 cu in.)
Bore and Stroke: 133 mm (5.3 in.) x 127 mm (5.0 in.)
Weight: 245.4 kg (541 lb)
Summary
Originally known as Fischer and Jacobs, this manufacturer was organized in Philadelphia in 1927, and was one of a number of manufacturers of small radial engines in the post-World War I era. Known as the Aircraft Engine Corporation after moving to Camden, New Jersey, the company became especially successful during World War II as the Jacobs Aircraft Engine of Pottstown, Pennsylvania.
The Jacobs seven-cylinder air-cooled radial engine, known as the Model L-5, and similar to the previous L-4, was introduced in 1936. This military version of the engine, the R-755-9, powered the following aircraft: Waco PG-3/A; Cessna AT-17A/B/C; and Cessna UC-78/A/B/C. Other military R-755 engine models powered aircraft such as the Kellett YG-1 autogiro and Stearman PT-18 primary trainer.
In the 1970s, Page Industries of Oklahoma bought all rights to Jacobs engines and, for a few years, manufactured small numbers of R-755s, including spares, and the turbocharged R-755S.
Credit Line
Transferred from the U.S. Air Force Central Museum
Date
1941
Inventory Number
A19600110000
Restrictions & Rights
Usage conditions apply
Type
PROPULSION-Reciprocating & Rotary
Materials
Copper Alloy
Ferrous Alloy
Unknown Coating
Paint
Non-Magnetic Metal
Rubber
Cork
Dimensions
Diameter 111.1 cm (43.75 in.), Length 99.1 cm (39.0 in.)
Country of Origin
United States of America
See more items in
National Air and Space Museum Collection
Data Source
National Air and Space Museum
Link to Original Record
Record ID
nasm_A19600110000