Pratt & Whitney R-1830 Twin Wasp

Pratt & Whitney R-1830 Twin Wasp
The Pratt & Whitney R-1830 Twin Wasp is an American air-cooled radial aircraft engine. It displaces and its bore and stroke are both . The design traces its history to 1929 experiments at Pratt & Whitney on twin-row designs. Production began in 1932 and it was widely used during the 1930s.
It was selected as the power plant for both the four-engined Consolidated B-24 Liberator heavy bomber and the twin-engined Douglas DC-3 transport, two of the most-produced aircraft. The production run of 173,618 R-1830 examples makes it the most-produced aviation engine in history.
A further developed version, the R-2000, was produced starting in 1942. The R-2000 was "bored-out" to and had a number of other minor changes to improve fuel economy and allow it to run at higher power ratings on lower-octane fuel. The primary user of the R-2000 was the Douglas DC-4.
Mostly retired today, the R-1830 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 is still a market for second-hand engines and parts.
Variants
R-1830-1:
R-1830-9: ,
R-1830-11:
R-1830-13:
R-1830-17:
R-1830-21:
R-1830-25:
R-1830-33:
R-1830-35: Fitted with GE B-2 turbosupercharger
R-1830-41: Fitted with GE B-2 turbosupercharger
R-1830-43:
R-1830-45:
R-1830-49:
R-1830-64: ,
R-1830-65:
R-1830-66:
R-1830-72:
R-1830-75:
R-1830-76:
R-1830-82:
R-1830-86:
R-1830-88:
R-1830-90:
R-1830-90-B:
R-1830-92:
R-1830-94:
R-1830-S1C3-G: ,
R-1830-S3C4-G:
R-1830-S6C3-G:
R-1830-SC-G:
R-1830-SC2-G: ,
R-1830-SC3-G: same engine built in Sweden as STWC-3G by SFA company for Swedish J 22, B 17 and B 18.
Applications
DAP Beaufort – Australian-built variants of Bristol Beaufort
Bloch MB.176
Boeing XB-15
Budd RB Conestoga
Burnelli CBY-3
CAC Boomerang – Australian "emergency fighter"
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 – "emergency fighter"; built in-house by the Swedish Air Force
Grumman F4F Wildcat
I.Ae. 24 Calquin
Laird-Turner Meteor LTR-14
Lioré et Olivier LeO 453
Lockheed Model 18 Lodestar
Lisunov Li-3 – a Yugoslav version of the Lisunov Li-2
Martin Maryland
Martin M-130
Republic P-43 Lancer
Saab 17
Saab 18
Short Sunderland V
Seversky P-35
Vickers Wellington IV
VL Myrsky – Finnish "emergency fighter"
Vultee P-66 Vanguard
Engines on display
Model R-1830-65 on display at the Museo Nacional de Aeronautica, Buenos Aires, Argentina
Model R-1830-86 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, Connecticut.
Model R-1830-90C on display at the Dutch aviation museum Aviodrome
Model R-1830-92 displayed at the Smithsonian Institution's National Air and Space Museum in Washington, DC
Model R-1830 on display at the Northeast Classic Car Museum in Norwich, New York
Model R-1830 cut-away display at Airbase Arizona Museum in Mesa, Arizona
Specifications (R-1830-S1C-G)
See also
References
Notes
Bibliography
Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006.
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.
External links
Pratt & Whitney's R-1830 page
List of R-1830 Variants
Aircraft air-cooled radial piston engines
R-1830
1930s aircraft piston engines