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

Applications

• Bach Air Yacht • Bellanca 31-40 • Boeing 80 • Boeing Model 95 • Boeing Model 299 • Burnelli UB-14 • Douglas O-38 • Focke-Wulf Fw 200 V1 • Gee Bee Model R-2 (1933) • Gee Bee R 1/2 Super Sportster • Granville-Miller-de Lackner R-6H "Q.E.D." • Junkers Ju 52 • Junkers Ju 86 • Junkers W 34 • Keystone B-3 • Lockheed Model 14 Super Electra (L-14H) • Lockheed Lodestar (C-56A, C-56B, C-56C, C-56D, C-56E, C-59/Mk 1a) • Martin BM • Martin XB-14 • Vought O2U Corsair • Sikorsky S-40A • Sikorsky S-42 • Sikorsky S-43 • Wedell-Williams Model 44

Engines on display

Specifications (R-1690 S1E-G)