Pratt & Whitney R-1340

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.

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)

pecifications (R-1340-S3HI)

pistonspecs

ref=cite book|last=Tsygulev|title=Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv ( _ru. Авиационные моторы военных воздушных сил иностранных государств)|publisher=Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR|location=Moscow|year=1939|url=http://base13.glasnet.ru/text/aviamotory/t.htm]
type=Nine-cylinder single-row supercharged air-cooled radial engine
bore=5.75 in (146 mm)
stroke=5.75 in (146 mm)
displacement=1,343 in³ (22 l)
length=44.06 in (1,119 mm)
diameter=51.38 in (1,305 mm)
width=
height=
weight=805 lb (365 kg)
valvetrain=Two overhead valves per cylinder
supercharger=Single-speed centrifugal type supercharger, 10:1 reduction
turbocharger=
fuelsystem=Two-barrel Stromberg carburetor
fueltype=80 octane rating gasoline
oilsystem=
coolingsystem=Air-cooled
power=542 hp (404 kW) at 2,200 rpm at 5,000 ft (1,525 m)
compression=6.0:1
specpower=0.4 hp/in³ (18.36 kW/l)
fuelcon=
specfuelcon=0.44 lb/(hp•h) (270 g/(kW•h))
oilcon=0.32 oz/(hp•h) (12 g/(kW•h))
power/weight=0.67 hp/lb (1.11 kW/kg)
reduction_gear=

Applications

;USA
* Agusta-Bell AB.102 ITA
* 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 AUS
* CAC Wirraway AUS
* 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
* 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 GBR
* Sikorsky H-19
* Sikorsky S-38
* Thomas-Morse XP-13 Viper
* Wedell-Williams Model 45
* Westland Whirlwind (helicopter) GBR

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

References

External links

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