Pratt & Whitney R-1340 Wasp

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R-1340 Wasp
Pratt and Whitney Wasp.jpg
The first Pratt & Whitney Wasp
Type Radial engine
National origin United States
Manufacturer Pratt & Whitney
First run 29 December 1925
Major applications Boeing 247
de Havilland Canada DHC-3 Otter
North American T-6 Texan
Sikorsky H-19
Sikorsky S-38
Number built 34,966
Developed into Pratt & Whitney R-985 Wasp Junior

The Pratt & Whitney R-1340 Wasp was 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.[1] 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.[2]

Variants[edit]

R-1340-7
450 hp (340 kW), 600 hp (450 kW)
R-1340-8
425 hp (317 kW)
R-1340-9
450 hp (340 kW), 525 hp (391 kW)
R-1340-16
550 hp (410 kW)
R-1340-17
525 hp (391 kW)
R-1340-19
600 hp (450 kW)
R-1340-19F
600 hp (450 kW)
R-1340-21G
550 hp (410 kW)
R-1340-22
550 hp (410 kW)
R-1340-23
575 hp (429 kW)
R-1340-30
550 hp (410 kW)
R-1340-31
550 hp (410 kW)
R-1340-33
600 hp (450 kW)
R-1340-48
600 hp (450 kW)
R-1340-49
600 hp (450 kW)
R-1340-AN1
550 hp (410 kW), 600 hp (450 kW)
R-1340-AN2
550 hp (410 kW), 3:2 geared prop shaft
R-1340-B
450 hp (340 kW)
R-1340-D
500 hp (370 kW)
R-1340-S1D1
525 hp (391 kW)
R-1340-S1H1-G
550 hp (410 kW), 600 hp (450 kW)
R-1340-S3H1
600 hp (450 kW)
R-1340-T1D1
520 hp (390 kW)

Applications[edit]

R-1340 powered Curtiss SOC Seagull

Engines on display[edit]

Specifications (R-1340-S1H1-G)[edit]

Pratt & Whitney R-1340 installed in a T-6 Texan

Data from Jane's.[8]

General characteristics

  • Type: Nine-cylinder single-row supercharged air-cooled radial engine
  • Bore: 5.75 in (146 mm)
  • Stroke: 5.75 in (146 mm)
  • Displacement: 1,344 in3 (22 L)
  • Diameter: 51.75 in (1.314 m)
  • Dry weight: 930 lb (422 kg)

Components

Performance

See also[edit]

Related development
Related lists

References[edit]

Notes[edit]

  1. ^ Gunston 1989, p.114.
  2. ^ Pratt&Whitney R-1340 page Retrieved: 25 October 2008
  3. ^ "Knoll KN-3". Western Flying. August 1929. 
  4. ^ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1119 "Pratt & whitney R-1340 Wasp A"
  5. ^ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1113 "Pratt & Whitney R-1340 Wasp C Cutaway"
  6. ^ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1120 "Pratt & Whitney R-1340-0 Wasp C"
  7. ^ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1122 "Pratt & Whitney Roscoe Turner R-1340 Wasp Engine"
  8. ^ Bridgman 1994, p. 81d.

Bibliography[edit]

  • Bridgman, Leonard. Jane's All the World's Aircraft 1945-46. Hammersmith, London: HarperCollinsPublishers (1994 reprint). ISBN 000 470831-8
  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9

External links[edit]