Pratt & Whitney R-1340 Wasp

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.


 * R-1340-7: 450 hp, 600 hp
 * R-1340-8: 425 hp
 * R-1340-9: 450 hp, 525 hp
 * R-1340-16: 550 hp
 * R-1340-17: 525 hp
 * R-1340-19: 600 hp
 * R-1340-19F: 600 hp
 * R-1340-21G: 550 hp
 * R-1340-22: 550 hp
 * R-1340-23: 575 hp
 * R-1340-30: 550 hp
 * R-1340-31: 550 hp
 * R-1340-33: 600 hp
 * R-1340-48: 600 hp
 * R-1340-49: 600 hp
 * R-1340-AN1: 550 hp, 600 hp
 * R-1340-AN2: 550 hp, 3:2 geared prop shaft
 * R-1340-B: 450 hp
 * R-1340-D: 500 hp
 * R-1340-S1D1:525 hp
 * R-1340-S1H1-G:550 hp, 600 hp
 * R-1340-S3H1:600 hp
 * R-1340-T1D1:520 hp

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

• 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

 * There are a Wasp A and three Wasp C's on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.