Pratt & Whitney R-1830 Twin Wasp
R-1830 Twin Wasp | |
---|---|
R-1830 on display at the Imperial War Museum Duxford | |
Type | Radial engine |
National origin | United States |
Manufacturer | Pratt & Whitney |
First run | 1932 |
Major applications | Consolidated B-24 Liberator Douglas C-47 Skytrain Grumman F4F Wildcat Consolidated PBY Catalina |
Number built | 173,618 [1] |
Variants | Pratt & Whitney R-2000 Twin Wasp |
The Pratt & Whitney R-1830 Twin Wasp was an American aircraft engine widely used in the 1930s and 1940s. Produced by Pratt & Whitney, it was a two-row, 14-cylinder, air-cooled radial design. It displaced 1,830 cu in (30.0 L) and its bore and stroke were both 5.5 in (140 mm). A total of 173,618 R-1830 engines was built,[1] and from their use in two of the most-produced aircraft ever built, the B-24 bomber and DC-3 transport, more Twin Wasps may have been built than any other aviation piston engine in history. A "bored-out" version (to a 5.75 inch/146 mm cylinder bore) with a slightly higher power rating and other slight changes in detail design was produced as the R-2000.
Variants
- R-1830-1: 800 hp (597 kW)
- R-1830-9: 850 hp (634 kW), 950 hp (708 kW)
- R-1830-11: 800 hp (597 kW)
- R-1830-13: 900 hp (671 kW), 950 hp (708 kW), 1,050 hp (783 kW)
- R-1830-17: 1,200 hp (895 kW)
- R-1830-21: 1,200 hp (895 kW)
- R-1830-25: 1,100 hp (820 kW)
- R-1830-33: 1,200 hp (895 kW)
- R-1830-35: 1,200 hp (895 kW) Fitted with GE B-2 turbosupercharger
- R-1830-41: 1,200 hp (895 kW) Fitted with GE B-2 turbosupercharger
- R-1830-43: 1,200 hp (895 kW)
- R-1830-45: 1,050 hp (783 kW)
- R-1830-49: 1,200 hp (895 kW)
- R-1830-64: 850 hp (634 kW), 900 hp (671 kW)
- R-1830-65: 1,200 hp (895 kW)
- R-1830-66: 1,000 hp (746 kW), 1,050 hp (783 kW), 1,200 hp (895 kW)
- R-1830-72: 1,050 hp (783 kW)
- R-1830-75: 1,350 hp (1,007 kW)
- R-1830-76: 1,200 hp (895 kW)
- R-1830-82: 1,200 hp (895 kW)
- R-1830-86: 1,200 hp (895 kW)
- R-1830-88: 1,200 hp (895 kW)
- R-1830-90: 1,200 hp (895 kW)
- R-1830-90-B: 1,200 hp (895 kW)
- R-1830-92: 1,200 hp (895 kW)
- R-1830-94: 1,350 hp (1,007 kW)
- R-1830-S1C3-G: 1,050 hp (783 kW), 1,200 hp (895 kW)
- R-1830-S3C4: 1,200 hp (895 kW)
- R-1830-S3C4-G: 1,200 hp (895 kW)
- R-1830-S6C3-G: 1,100 hp (820 kW)
- R-1830-SC-G: 900 hp (671 kW)
- R-1830-SC2-G: 900 hp (671 kW), 1,050 hp (783 kW)
- R-1830-SC3-G: 1,065 hp (749 kW) same engine built in Sweden as STWC-3G by SFA company for Swedish J 22, B 17 and B 18.
Applications
- Bristol Beaufort (Australian-built production)
- Bloch MB.176
- Burnelli CBY-3
- CAC Boomerang
- CAC Woomera
- Consolidated B-24 Liberator
- Consolidated PBY Catalina
- Consolidated PB2Y Coronado
- Consolidated PB4Y Privateer
- Curtiss P-36 Hawk
- Douglas C-47 Skytrain
- Douglas DC-3
- Douglas DB-7 (early variants only)
- Douglas TBD Devastator
- FFVS J 22
- Grumman F4F Wildcat
- Laird-Turner Meteor LTR-14
- Lioré et Olivier LeO 453
- Lisunov Li-3 - A Yugoslav version of the Soviet Lisunov Li-2
- Martin Maryland
- Restored Mitsubishi A6M Zero warbird aircraft
- Republic P-43 Lancer
- Saab 17
- Saab 18
- Short Sunderland V
- Seversky P-35
- Vickers Wellington IV
- VL Myrsky
- Vultee P-66 Vanguard
Engines on display
- Model R-1830-92 displayed at the Smithsonian Institution's National Air and Space Museum in Washington, DC[2]
- Model R-1830-86 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.[3]
- Model R-1830 on display at the Northeast Classic Car Museum in Norwich, NY
- Model R-1830 on display at the Dutch aviation museum Aviodrome
- Model R-1830/65 on display at the Museo Nacional de Aeronautica- Buenos Aires - Argentina
Specifications (R-1830-S1C-G)
Data from [4]
General characteristics
- Type: Fourteen-cylinder two-row supercharged air-cooled radial engine
- Bore: 5.5 in (139.7 mm)
- Stroke: 5.5 in (139.7 mm)
- Displacement: 1,829.4 in³ (29.978 l)
- Length: 59.06 in (1,500 mm)
- Diameter: 48.03 in (1,220 mm)
- Dry weight: 1,250 lb (567 kg)
Components
- Valvetrain: Two overhead valves per cylinder
- Supercharger: Single-speed General Electric centrifugal type supercharger, 1:7.15 speed increase
- Fuel system: Two-barrel Stromberg carburetor
- Fuel type: 95-100 octane rating gasoline
- Cooling system: Air-cooled
- Reduction gear: Epicyclic gearing, 2:3
Performance
- Power output:
- 1,200 hp (895 kW) at 2,700 rpm for takeoff
- 700 hp (522 kW) at 2,325 rpm cruise power at 13,120 ft (4,000 m)
- Specific power: 0.66 hp/in³ (29.83 kW/l)
- Compression ratio: 6.7:1
- Specific fuel consumption: 0.49 lb/(hp•h) (295 g/(kW•h))
- Power-to-weight ratio: 0.96 hp/lb (1.58 kW/kg)
See also
- Related development
- Pratt & Whitney Wasp series
- Pratt & Whitney R-985 Wasp Junior
- Pratt & Whitney R-1340 Wasp
- Pratt & Whitney R-1535 Twin Wasp Junior
- Pratt & Whitney R-2000 Twin Wasp
- Pratt & Whitney R-2800 Double Wasp
- Pratt & Whitney R-4360 Wasp Major
- Comparable engines
- BMW 801
- Bristol Taurus
- Fiat A.74
- Gnome-Rhône 14N
- Mitsubishi Kinsei
- Nakajima Sakae
- Shvetsov ASh-82
- Tumansky M-88
- Wright R-1820
- Related lists
References
- 1 2 - Manufacturer's product page, R-1830 Retrieved: 2 November 2013
- ↑ Collection: Pratt & Whitney Twin Wasp R-1830-92 Radial Engine Retrieved: 3 December 2014
- ↑ New England Air Museum Exhibit page R-1830-86 Twin Wasp Retrieved: 2 November 2013
- ↑ Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств) (in Russian). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR.
- Angelucci, Enzo (1988, Revised Edition 2006). Complete Book of World War II Combat Aircraft. VMB Publishers. ISBN 978-88-540-0829-8. Check date values in:
|date=
(help) - Bridgman, Leonard, ed. Jane's All The World's Aircraft 1951–1952. London: Samson Low, Marston & Company, Ltd 1951.
External links
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