Pratt & Whitney R-1340

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The Pratt & Whitney R-1340 Wasp was a reciprocating engine widely used in American aircraft from the 1920s onward. It was the company's first engine, and the first of the famed Wasp family. It was a single-row, 9-cylinder air-cooled radial design, and displaced 1,344 cubic inches (22 liters); bore and stroke were both 5.75 inches.

Contents 1 Models/Variants 2 Specifications (R-1340-16) 3 Applications 4 Related contents 5 External links

[edit] Models/Variants

• R-1340-9 - 450 hp (336 kW)
• R-1340-B - 450 hp (336 kW)
• R-1340-D - 500 hp (373 kW)
• R-1340-16 - 550 hp (410 kW)
• R-1340-AN1 - 550 hp (410 kW) , 600 hp (447 kW)
• R-1340-33 - 600 hp (447 kW)
• R-1340-49 - 600 hp (447 kW)

[edit] Specifications (R-1340-16)

General characteristics

• Type: 9-cylinder air-cooled radial engine
• Bore: 5.75 in (146 mm)
• Stroke: 5.75 in (146 mm)
• Displacement: 1,343.8 in³ (22 L)
• Length: 42.9 in (1,090 mm)
• Width: 51.4 in (1,305 mm)
• Dry weight: 864 lbs (392 kg)

Components

• Valvetrain: 1 inlet and one exhaust valve per cylinder
• Fuel system: 1 Stromberg carburetor
• Fuel type: 80 octane
• Cooling system: Air-cooled

Performance

• Power output: 550 hp (410 kW)
• Specific power: 0.41 hp/in³ (18.6 kW/L)
• Compression ratio: 6.0:1
• Power-to-weight ratio: 0.63hp/lb (1.04 kW/kg)

[edit] Applications

 United States

• Agusta-Bell AB.102  Italy
• Air Tractor AT-301
• Air Tractor AT-400 Geared 1340 on AT-401
• Ayres Thrush
• Boeing F3B
• Boeing F4B
• Boeing P-12
• Boeing P-26
• Boeing P-29
• CAC Ceres  Australia
• CAC Wirraway  Australia
• Consolidated P-30
• Curtiss Falcon
• Curtiss O-52
• Curtiss SOC Seagull
• Curtiss F7C Seahawk
• de Havilland Canada DHC-3 Otter
• Douglas Dolphin
• Fokker F.32 (prototype only)
• Ford Trimotor
• Gee Bee R-1
• Grumman Ag Cat All Models, Geared 1340 on Super B
• Junkers W 34 Germany
• Lockheed Model 10 Electra
• Lockheed Sirius
• Lockheed Vega
• North American BC-1
• North American T-6 Texan
• Northrop C-19 Alpha
• Scottish Aviation Twin Pioneer  United Kingdom
• Sikorsky H-19
• Sikorsky S-38
• Thomas-Morse XP-13 Viper
• Wedell-Williams Model 45
• Westland Whirlwind (helicopter)  United Kingdom

[edit] Related contents

• Pratt & Whitney Wasp series
• R-985 Wasp Junior
• R-1830 Twin Wasp
• R-1535 Twin Wasp Junior
• R-2800 Double Wasp
• R-4360 Wasp Major

[edit] External links

• http://www.pw.utc.com/vgn-ext-templating/v/index.jsp?vgnextoid=a47bf3b8f77fb010VgnVCM1000000881000aRCRD