Wright R-2600 Twin Cyclone

E314431

aircraft engine piston engine radial engine

The Wright R-2600 Twin Cyclone is a World War II–era American 14-cylinder, air-cooled radial aircraft engine widely used in medium bombers and naval aircraft.

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All labels observed (5)

Label	Occurrences
Wright R-2600 Twin Cyclone canonical	3
Wright R-2600 Twin Cyclone radial engine	2
Wright R-2600 (in some applications)	1
Wright R-2600-20 radial engine	1
Wright R‑2600 Twin Cyclone radial engine	1

How this entity was disambiguated

This entity first appeared as the object of triple T2938709 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Wright R-2600 Twin Cyclone
Context triple: [Wright Aeronautical Corporation, notableProduct, Wright R-2600 Twin Cyclone]

A. Wright R-3350 Duplex-Cyclone radial engine
The Wright R-3350 Duplex-Cyclone is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II and early postwar bombers and airliners.
B. Pratt & Whitney R-2800 Double Wasp
The Pratt & Whitney R-2800 Double Wasp is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II fighters and bombers.
C. Wright R-1820 radial engine
The Wright R-1820 radial engine is a widely used American air-cooled, nine-cylinder aircraft engine that powered numerous military and civilian aircraft from the 1930s through World War II and beyond.
D. Pratt & Whitney R-1830 Twin Wasp radial engine
The Pratt & Whitney R-1830 Twin Wasp is a widely used American 14-cylinder air-cooled radial aircraft engine of the World War II era, powering numerous fighters, bombers, and transport aircraft.
E. Bristol Hercules radial engine
The Bristol Hercules radial engine was a British air-cooled, sleeve-valve aircraft engine widely used in World War II bombers and other military aircraft for its reliability and high power output.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Wright R-2600 Twin Cyclone
Target entity description: The Wright R-2600 Twin Cyclone is a World War II–era American 14-cylinder, air-cooled radial aircraft engine widely used in medium bombers and naval aircraft.

A. Wright R-3350 Duplex-Cyclone radial engine
The Wright R-3350 Duplex-Cyclone is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II and early postwar bombers and airliners.
B. Pratt & Whitney R-2800 Double Wasp
The Pratt & Whitney R-2800 Double Wasp is a powerful American 18-cylinder air-cooled radial aircraft engine widely used in World War II fighters and bombers.
C. Wright R-1820 radial engine
The Wright R-1820 radial engine is a widely used American air-cooled, nine-cylinder aircraft engine that powered numerous military and civilian aircraft from the 1930s through World War II and beyond.
D. Pratt & Whitney R-1830 Twin Wasp radial engine
The Pratt & Whitney R-1830 Twin Wasp is a widely used American 14-cylinder air-cooled radial aircraft engine of the World War II era, powering numerous fighters, bombers, and transport aircraft.
E. Bristol Hercules radial engine
The Bristol Hercules radial engine was a British air-cooled, sleeve-valve aircraft engine widely used in World War II bombers and other military aircraft for its reliability and high power output.
F. None of above. chosen

Statements (44)

Predicate	Object
instanceOf	aircraft engine ⓘ piston engine ⓘ radial engine ⓘ
application	military aircraft ⓘ
bore	approximately 6.125 inches ⓘ
configuration	four-stroke ⓘ
coolingSystem	air-cooled ⓘ
countryOfOrigin	United States of America ⓘ surface form: United States
cylinderConfiguration	double-row radial ⓘ
developedFrom	Wright R-1820 radial engine ⓘ surface form: Wright R-1820 Cyclone
displacement	2600 cubic inches ⓘ approximately 42.6 liters ⓘ
era	World War II ⓘ
family	Wright Cyclone family ⓘ surface form: Wright Cyclone engine family
fuelType	aviation gasoline ⓘ
ignitionSystem	dual ignition ⓘ
manufacturer	Wright Aeronautical Corporation ⓘ surface form: Wright Aeronautical
mounting	radial engine nacelle installations ⓘ
notableFeature	high reliability in combat service ⓘ two-row radial cylinder arrangement ⓘ wide operational use across multiple aircraft types ⓘ
notableRole	primary powerplant for several US Navy carrier aircraft in World War II ⓘ primary powerplant for several US medium bombers in World War II ⓘ
numberOfCylinders	14 ⓘ
powerOutput	approximately 1600 horsepower ⓘ up to about 1900 horsepower in later versions ⓘ
productionPeriod	late 1930s to mid-1940s ⓘ
productionStatus	out of production ⓘ
stroke	approximately 6.3125 inches ⓘ
successor	Wright R-3350 Duplex-Cyclone radial engine ⓘ surface form: Wright R-3350 Duplex-Cyclone
supercharging	single-stage supercharger ⓘ
usedBy	Allied air forces ⓘ United States Army Air Forces ⓘ United States Marine Corps ⓘ United States Navy ⓘ
usedInAircraft	Douglas A-20 Havoc ⓘ Grumman F6F Hellcat prototype ⓘ Grumman TBF Avenger ⓘ Martin B-26 Marauder ⓘ North American B-25B Mitchell ⓘ surface form: North American B-25 Mitchell
usedInAircraftType	medium bombers ⓘ naval aircraft ⓘ
usedInConflict	World War II ⓘ surface form: Second World War
valvetrain	overhead valves ⓘ

How these facts were elicited

Referenced by (8)

Full triples — surface form annotated when it differs from this entity's canonical label.

Wright Aeronautical Corporation → notableProduct → Wright R-2600 Twin Cyclone ⓘ

North American B-25B Mitchell → powerplant → Wright R-2600 Twin Cyclone ⓘ

this entity surface form: Wright R-2600 Twin Cyclone radial engine

Grumman TBF Avenger → powerplant → Wright R-2600 Twin Cyclone ⓘ

A-20 Havoc → powerplant → Wright R-2600 Twin Cyclone ⓘ

this entity surface form: Wright R‑2600 Twin Cyclone radial engine

Wright R-1820 radial engine → successor → Wright R-2600 Twin Cyclone ⓘ

subject surface form: Wright R-1820

this entity surface form: Wright R-2600 (in some applications)

Curtiss SB2C Helldiver → engineType → Wright R-2600 Twin Cyclone ⓘ

Curtiss SB2C Helldiver → powerplant → Wright R-2600 Twin Cyclone ⓘ

this entity surface form: Wright R-2600-20 radial engine

General Motors TBM Avenger → powerplant → Wright R-2600 Twin Cyclone ⓘ