| R-1830 Twin Wasp | |
|---|---|
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| An R-1830 used in a B-24 Liberator restoration project | |
| Type | Radial engine |
| National origin | United States |
| Manufacturer | Pratt & Whitney |
| First run | 1932 |
| Major applications | B-24 Liberator C-47 Skytrain F4F Wildcat PBY Catalina |
| Variants | Pratt & Whitney R-2000 |
The Pratt & Whitney R-1830 Twin Wasp was an engine widely used in American aircraft in the 1930s and 1940s. Produced by Pratt & Whitney, it was a two-row, 14-cylinder, air-cooled radial design. It displaced 1,830 in³ (30 L) and its bore and stroke measured 5.5 and 5.5 in (140 and 140 mm), respectively. A total of 173,618 R-1830 engines were built, a notable figure which makes it the most produced aircraft engine.[1] An enlarged version with a slightly higher power rating was produced as the R-2000.
Contents |
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 - 600 hp (447 kW), 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-1830-49 - 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-1830-82 - 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-SGC-3 - 1,650 hp (1,224 kW) Swedish unit built under license by SFA company for Finnish VL Myrsky II
Applications
- Bristol Beaufort
- Bloch MB.176
- CAC Boomerang
- CAC Woomera
- Burnelli CBY-3
- Consolidated B-24 Liberator
- Consolidated PBY Catalina
- Consolidated PB2Y Coronado
- Consolidated PB4Y Privateer
- Curtiss P-36 Hawk
- Douglas C-47 Skytrain
- Douglas DB-7 (early variants only)
- Douglas TBD Devastator
- FFVS J 22
- Grumman F4F Wildcat
- Lioré et Olivier LeO 453
- Martin Maryland
- Republic P-43 Lancer
- Saab 17
- Saab 18
- Short Sunderland MK V
- Seversky P-35
- VL Myrsky
- Vultee P-66 Vanguard
Specifications (R-1830-S1C-G)
Data from [2]
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 (30 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, 7.15:1 reduction
- 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 Hercules
- Fiat A.74
- Gnome-Rhône 14N
- Mitsubishi Kinsei
- Nakajima Sakae
- Shvetsov ASh-82
- Wright R-1820
Related lists
References
- ^ Pratt & Whitney - R-1830 page Retrieved: 25 October 2008
- ^ Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Russian: Авиационные моторы военных воздушных сил иностранных государств). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. http://base13.glasnet.ru/text/aviamotory/t.htm.
- Angelucci, Enzo (1988, Revised Edition 2006). Complete Book of World War II Combat Aircraft. VMB Publishers. ISBN 978-88-540-0829-8.
- 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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