The Pratt & Whitney R-1340 Wasp is an aircraft engine of the reciprocating type that was widely used in American aircraft from the 1920s onward. It was the Pratt & Whitney aircraft company's first engine, and the first of the famed Wasp series. It was a single-row, nine-cylinder, air-cooled, radial design, and displaced 1,344 cubic inches (22 L); bore and stroke were both 5.75 in (146 mm). A total of 34,966 engines were produced. As well as numerous types of fixed-wing aircraft, it was used to power helicopters, the Agusta-Bell AB.102 and the Sikorsky H-19, and a class of airship, the K-class blimp. In 2016, it received designation as a Historic Engineering Landmark from the American Society of Mechanical Engineers.

Variants

Note: R for Radial and 1340 for 1340 cubic inch displacement.

Applications

• Agusta-Bell AB.102 • Air Tractor AT-301 • Air Tractor AT-401 • Ayres Thrush • Bach Air Yacht • Boeing Model 40A • Boeing 247 • Boeing F3B • Boeing F4B • Boeing P-12 • Boeing P-26 Peashooter • Boeing P-29 • CAC Ceres • CAC Wirraway • Curtiss Falcon • Curtiss F7C Seahawk • Curtiss O-52 • Curtiss P-6S Hawk • Curtiss SOC Seagull • de Havilland Canada DHC-3 Otter • Douglas Dolphin • Fairchild FB-3 • Fokker F.10 • Fokker F.32 • Ford Trimotor • Gee Bee R-1 • Goodyear K-class blimp • Gee Bee R-2 Super Sportster • Gee Bee R 1/2 Super Sportster • Gee Bee YW • Gee Bee Z • Gee Bee QED • Grumman Mallard • Grumman Ag Cat • Howard DGA-6 • Ireland N-2C Neptune • Junkers W 34 • Junkers Ju 52 • Knoll Aircraft Company KN-3 • Kaman HH-43 Huskie • Lockheed Vega 5 • Lockheed Model 8 Sirius • Lockheed Model 9 Orion • Lockheed Model 10-C & 10-E Electra • Lockheed XC-35 • Loening OL-8 • Noorduyn Norseman • North American BC-1 • North American T-6/SNJ Texan/Harvard • Northrop Alpha • Northrop C-19 Alpha • Scottish Aviation Twin Pioneer • Sikorsky H-19 • Sikorsky S-38 • Soko 522 • TNCA MTW-1 • Thomas-Morse XP-13A Viper • Vought O2U Corsair • Wedell-Williams Model 45 • Westland Whirlwind (helicopter)

Engines on display

Specifications (R-1340-S1H1-G)