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.[1] 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
525 hp (391 kW)
R-1690-5
525 hp (391 kW)
R-1690-11
775 hp (578 kW)
R-1690-13
625 hp (466 kW)
R-1690-S5D1G
700 hp (520 kW)
R-1690-52
750 hp (560 kW)
R-1690-SDG
R-1690-S1EG
750 hp (560 kW)
R-1690-S2EG
R-1690-25
850 hp (630 kW)
R-1690-S1C3G
1,050 hp (780 kW)
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 Hornet
License production of the Hornet in Germany, independently developed as the BMW 132.
^Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (in Russian). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Archived from the original on 2009-03-24.
Bibliography
Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.
External links
Wikimedia Commons has media related to Pratt & Whitney R-1690.