Pratt & Whitney R-1830 Twin Wasp
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| 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 is an American aircraft engine widely used in the 1930s and 1940s. Produced by Pratt & Whitney, it is a two-row, 14-cylinder, air-cooled radial design with seven cylinders on a row. It displaces 1,830 cu in (30.0 L) and its bore and stroke are both 5.5 in (140 mm). A total of 173,618 R-1830 engines were built,[1] and from their use in two of the most-produced aircraft ever built, the four-engined B-24 heavy bomber and twin-engined 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. Mostly retired today, it is still used on Douglas DC-3 and various museum aircraft and warbirds seen at airshows. It is not manufactured anymore, but spares are still available and there exists a wide market for second-hand engines and parts.
Contents
1 Variants
2 Applications
3 Engines on display
4 Specifications (R-1830-S1C-G)
4.1 General characteristics
4.2 Components
4.3 Performance
5 See also
6 References
6.1 Notes
6.2 Bibliography
7 External links
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
R-1830 mounted on the left wing of an ex-military Douglas C-47
RAF Dakota's Twin Wasp out for servicing
Bristol Beaufort (Australian-built production)- Bloch MB.176
- Boeing XB-15
- Budd RB Conestoga
- 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
- I.Ae. 24 Calquin
- 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, Connecticut.[3]
- Model R-1830 on display at the Northeast Classic Car Museum in Norwich, New York
- Model R-1830 on display at the Dutch aviation museum Aviodrome
- Model R-1830 cut-away display at Airbase Arizona Museum in Mesa, Arizona [4]
- Model R-1830/65 on display at the Museo Nacional de Aeronautica, Buenos Aires, Argentina[citation needed]
Specifications (R-1830-S1C-G)
Pratt & Whitney R-1830 "Twin Wasp" (sectioned)
Data from [5]
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
- Piaggio P.XI
- Piaggio P.XIX
- Shvetsov ASh-82
- Tumansky M-88
- Wright R-1820
Related lists
- List of aircraft engines
References
Notes
^ ab - Archived (Nov. 11, 2013) manufacturer's product page, R-1830 Retrieved: 7 February 2019
^ 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
^ www.azcaf.org
^ 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. Archived from the original on 24 March 2009..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
Bibliography
Angelucci, Enzo (2006) [1988]. 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.
- Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006.
ISBN 0-7509-4479-X
- White, Graham. Allied Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II. Warrendale, Pennsylvania: SAE International, 1995.
ISBN 1-56091-655-9
External links
 | Wikimedia Commons has media related to Pratt & Whitney R-1830. |
- Pratt & Whitney's R-1830 page
- List of R-1830 Variants
