The Pratt & Whitney R-1830 Twin Wasp is an American air-cooled

radial Radial is a geometric term of location which may refer to: Mathematics and Direction * Vector (geometric) In mathematics, physics, and engineering, a Euclidean vector or simply a vector (sometimes called a geometric vector or spatial vector) ...

aircraft engine An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many ...

. It displaces and its bore and stroke are both . The design traces its history to 1929 experiments at

Pratt & Whitney Pratt & Whitney is an American aerospace manufacturer with global service operations. It is a subsidiary of Raytheon Technologies. Pratt & Whitney's aircraft engines are widely used in both civil aviation (especially airlines) and military aviat ...

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 The Consolidated B-24 Liberator is an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and some initial production aircraft were laid down as export models des ...

heavy bomber and the twin-engined

Douglas DC-3 The Douglas DC-3 is a propeller-driven airliner manufactured by Douglas Aircraft Company, which had a lasting effect on the airline industry in the 1930s to 1940s and World War II. It was developed as a larger, improved 14-bed sleeper version ...

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 Octane is a hydrocarbon and an alkane with the chemical formula , and the condensed structural formula . Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-Tri ...

fuel. The primary user of the R-2000 was the

Douglas DC-4 The Douglas DC-4 is an American four-engined (piston), propeller-driven airliner developed by the Douglas Aircraft Company. Military versions of the plane, the C-54 and R5D, served during World War II, in the Berlin Airlift and into the 1960s ...

. Mostly retired today, the R-1830 is still used on Douglas DC-3 and various museum aircraft and

warbird A warbird is any vintage military aircraft now operated by civilian organizations and individuals, or in some instances, by historic arms of military forces, such as the Battle of Britain Memorial Flight, the RAAF Museum Historic Flight, or the ...

s 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 In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

* 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 DAP or Dap may refer to: Science * DAP (gene), human gene that encodes death-associated proteins, which mediate programmed cell death * Diamidophosphate, phosphorylating compound * Diaminopimelic acid, amino acid derivative of lysine * Diami ...

– Australian-built variants of Bristol Beaufort * Bloch MB.176 *

Boeing XB-15 The Boeing Company () is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, telecommunications equipment, and missiles worldwide. The company also provides leasing and product ...

* Budd RB Conestoga *

Burnelli CBY-3 The Burnelli CBY-3 Loadmaster is an unconventional transport aircraft that was designed by American engineer Vincent Burnelli and built in Canada in 1944 by Canadian Car and Foundry. Design and development The CBY-3 " lifting fuselage" was an ev ...

CAC Boomerang The CAC Boomerang is a fighter aircraft designed and manufactured in Australia by the Commonwealth Aircraft Corporation between 1942 and 1945. Approved for production shortly following the Empire of Japan's entry into the Second World War, the ...

– Australian "emergency fighter" *

CAC Woomera The CAC Woomera, also known as the CAC CA-4 and CAC CA-11, was an Australian bomber aircraft that was designed and constructed by the Commonwealth Aircraft Corporation during World War II. The order for the Woomera was cancelled before it became ...

Consolidated PBY Catalina The Consolidated PBY Catalina is a flying boat and amphibious aircraft that was produced in the 1930s and 1940s. In Canadian service it was known as the Canso. It was one of the most widely used seaplanes of World War II. Catalinas served w ...

Consolidated PB2Y Coronado The PB2Y Coronado is a large flying boat patrol bomber designed by Consolidated Aircraft, and used by the US Navy during World War II in bombing, antisubmarine, and transport roles. Obsolete by the end of the war, Coronados were quickly taken o ...

Consolidated PB4Y Privateer The Consolidated PB4Y-2 Privateer is an American World War II and Korean War era patrol bomber of the United States Navy derived from the Consolidated B-24 Liberator. The Navy had been using B-24s with only minor modifications as the PB4Y-1 Lib ...

Curtiss P-36 Hawk The Curtiss P-36 Hawk, also known as the Curtiss Hawk Model 75, is an American-designed and built fighter aircraft of the 1930s and 40s. A contemporary of the Hawker Hurricane and Messerschmitt Bf 109, it was one of the first of a new generation ...

Douglas C-47 Skytrain The Douglas C-47 Skytrain or Dakota (RAF, RAAF, RCAF, RNZAF, and SAAF designation) is a military transport aircraft developed from the civilian Douglas DC-3 airliner. It was used extensively by the Allies during World War II and remained in ...

Douglas DB-7 The Douglas A-20 Havoc (company designation DB-7) is an American medium bomber, attack aircraft, night intruder, night fighter, and reconnaissance aircraft of World War II. Designed to meet an Army Air Corps requirement for a bomber, it was ...

– early variants only *

Douglas TBD Devastator The Douglas TBD Devastator was an American torpedo bomber of the United States Navy. Ordered in 1934, it first flew in 1935 and entered service in 1937. At that point, it was the most advanced aircraft flying for the Navy and possibly for any na ...

FFVS J 22 The FFVS J 22 was a Swedish single-engine fighter aircraft developed for the Swedish Air Force during World War II. Development At the onset of World War II, the Swedish Air Force (''Flygvapnet'') was equipped with largely obsolete Gloster Gladi ...

– "emergency fighter"; built in-house by the Swedish Air Force *

Grumman F4F Wildcat The Grumman F4F Wildcat is an American carrier-based fighter aircraft that entered service in 1940 with the United States Navy, and the British Royal Navy where it was initially known as the Martlet. First used by the British in the North Atlan ...

I.Ae. 24 Calquin The I.Ae.24 Calquin (a Mapudungun word which means "Royal Eagle") was a tactical bomber designed and built by the ''Instituto Aerotécnico'' at Córdoba, Argentina, Córdoba, in Argentina in the immediate post-World War II era. Although superfici ...

* Laird-Turner Meteor LTR-14 * Lioré et Olivier LeO 453 *

Lockheed Model 18 Lodestar The Lockheed Model 18 Lodestar is a passenger transport aircraft of the World War II era. Design and development Sales of the 10–14 passenger Lockheed Model 14 Super Electra, which first flew in 1937, had proved disappointing, despite the air ...

* Lisunov Li-3 – a Yugoslav version of the Lisunov Li-2 *

Martin Maryland The Martin Model 167 Maryland was an American medium bomber that first flew in 1939. It saw action in World War II with France and the United Kingdom. Design and development In response to a December 1937 United States Army Air Corps requiremen ...

Martin M-130 The Martin M-130 was a commercial flying boat designed and built in 1935 by the Glenn L. Martin Company in Baltimore, Maryland, for Pan American Airways. Three were built: the ''China Clipper'', the ''Philippine Clipper'' and the ''Hawaii Clipp ...

Republic P-43 Lancer The Republic P-43 Lancer was a single-engine, all-metal, low-wing monoplane fighter aircraft built by Republic, first delivered to the United States Army Air Corps in 1940. A proposed development was the P-44 Rocket. While not a particularly ...

Saab 17 The Saab 17 is a Swedish single-engine monoplane reconnaissance dive-bomber aircraft of the 1940s originally developed by ASJA prior to its merger into Saab. It was the first all-metal stressed skin aircraft developed in Sweden. Design and dev ...

Saab 18 The Saab 18 was a twin-engine bomber and reconnaissance aircraft, designed and built by Svenska Aeroplan AB (SAAB) for use by the Swedish Air Force in response to a 1938 design competition. Due to delays, it did not enter service until 1944, bu ...

Short Sunderland The Short S.25 Sunderland is a British flying boat patrol bomber, developed and constructed by Short Brothers for the Royal Air Force (RAF). The aircraft took its service name from the town (latterly, city) and port of Sunderland in North East ...

V *

Seversky P-35 The Seversky P-35 is an American fighter aircraft built by the Seversky Aircraft Company in the late 1930s. A contemporary of the Hawker Hurricane and Messerschmitt Bf 109, the P-35 was the first single-seat fighter in United States Army Air Co ...

– Finnish "emergency fighter" *

Vickers Wellington The Vickers Wellington was a British twin-engined, long-range medium bomber. It was designed during the mid-1930s at Brooklands in Weybridge, Surrey. Led by Vickers-Armstrongs' chief designer Rex Pierson; a key feature of the aircraft is its g ...

IV *

VL Myrsky The VL Myrsky ("Storm") is a Finnish World War II fighter aircraft originally developed by Valtion lentokonetehdas for the Finnish Air Force. The models of the aircraft were Myrsky I, Myrsky II, and Myrsky III. It was designed by Edward Wegelius ...

Vultee P-66 Vanguard The Vultee P-66 Vanguard was a United States Army Air Forces fighter aircraft. It was initially ordered by Sweden, but by the time the aircraft were ready for delivery in 1941, the United States would not allow them to be exported, designati ...

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 The New England Air Museum (NEAM) is an American aerospace museum located adjacent to Bradley International Airport in Windsor Locks, Connecticut. The museum consists of three display hangars with additional storage and restoration hangars. Its c ...

Bradley International Airport Bradley International Airport is a public international airport in Windsor Locks, Connecticut, United States. Owned and operated by the Connecticut Airport Authority, it is the second-largest airport in New England. The airport is about halfw ...

Windsor Locks, Connecticut Windsor Locks is a town in Hartford County, Connecticut, United States. As of the 2020 census, its population was 12,613. It is the site of Bradley International Airport, which serves the Greater Hartford-Springfield region and occupies approxim ...

. * Model R-1830-90C on display at the Dutch aviation museum

Aviodrome The Nationaal Luchtvaart-Themapark Aviodrome (also known simply as Aviodrome) is a large aerospace museum in the Netherlands that has been located on Lelystad Airport since 2003. Previously the museum was located at Schiphol Airport.

* Model R-1830-92 displayed at the

Smithsonian Institution The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded ...

National Air and Space Museum The National Air and Space Museum of the Smithsonian Institution, also called the Air and Space Museum, is a museum in Washington, D.C., in the United States. Established in 1946 as the National Air Museum, it opened its main building on the Nat ...

Washington, DC ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan ...

* Model R-1830 on display at the

Northeast Classic Car Museum The Northeast Classic Car Museum is a non-profit educational facility in Norwich, New York that collects and exhibits notable vehicles throughout the history of the United States. The museum opened on Memorial Day, 1997. The museum was founded t ...

Norwich, New York Norwich is a city and county seat of Chenango County, New York, United States. Surrounded on all sides by the Town of Norwich,. The name is taken from Norwich, England. Its population was 7,190 at the 2010 census. Lt. Warren Eaton Airport ...

* Model R-1830 cut-away display at Airbase Arizona Museum in Mesa, Arizona

Specifications (R-1830-S1C-G)

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
{{DEFAULTSORT:Pratt and Whitney R-1830 Twin Wasp Aircraft air-cooled radial piston engines R-1830 1930s aircraft piston engines