The Pratt & Whitney R-1690 Hornet was a widely used American aircraft engine. Developed by Pratt & Whitney, 2,944 were produced from 1926 through 1942. It first flew in 1927. It was a single-row, 9-cylinder air-cooled radial design. Displacement was 1,690 cubic inches (27.7 L). It was built under license in Italy as the Fiat A.59. In Germany, the BMW 132 was a developed version of this engine. The R-1860 Hornet B was an enlarged version produced from 1929.
Variants
R-1690-3 R-1690-5 R-1690-11 R-1690-13 R-1690-S5D1G R-1690-52 R-1690-SDG R-1690-S1EG R-1690-S2EG R-1690-25 R-1690-S1C3G Fiat A.59 R. License built in Italy with reduction gearing. Fiat A.59 R.C. License built in Italy with reduction gearing and supercharger. BMW HornetLicense production of the Hornet in Germany, independently developed as the BMW 132.
Applications
Engines on display There is a R-1690 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.
Specifications (R-1690 S1E-G)
See also
References Notes
Bibliography
External links
Pratt & Whitney R-1690 page