Wright R-1820 radial engine
E275551
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Wright R-1820 Cyclone | 6 |
| Wright R-1820 radial engine canonical | 2 |
| Wright R-1820 Cyclone radial engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2530719 — 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-1820 radial engine Context triple: [North American T-28 Trojan, engineType, Wright R-1820 radial engine]
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Bristol Pegasus radial engine
The Bristol Pegasus radial engine was a widely used British air-cooled aircraft engine of the interwar and World War II era, powering numerous bombers and transport aircraft.
- 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-1820 radial engine Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
Bristol Pegasus radial engine
The Bristol Pegasus radial engine was a widely used British air-cooled aircraft engine of the interwar and World War II era, powering numerous bombers and transport aircraft.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
piston engine ⓘ radial engine ⓘ |
| alsoKnownAs | Cyclone 9 ⓘ |
| application |
bombers
ⓘ
fighters ⓘ patrol aircraft ⓘ transports ⓘ |
| bore | 6.125 inches (approximate) ⓘ |
| configuration | single-row radial ⓘ |
| coolingSystem | air-cooled ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cylinderArrangement | radial ⓘ |
| displacement | 1820 cubic inches ⓘ |
| era | 1930s ⓘ |
| family | Wright Cyclone family ⓘ |
| fuelSystem | carbureted ⓘ |
| fuelType | aviation gasoline ⓘ |
| ignitionSystem | dual magnetos ⓘ |
| manufacturer |
Wright Aeronautical Corporation
ⓘ
surface form:
Wright Aeronautical
|
| notableFeature | widely used in World War II American aircraft ⓘ |
| notableUser |
United States Army Air Forces
ⓘ
United States Marine Corps ⓘ United States Navy ⓘ civil airlines ⓘ |
| numberOfCylinders | 9 ⓘ |
| powerOutputRange | 700 horsepower to over 1,200 horsepower (depending on variant) ⓘ |
| productionPeriod |
1930s
ⓘ
1940s ⓘ |
| stroke | 5.5 inches (approximate) ⓘ |
| successor |
Wright R-2600 Twin Cyclone
ⓘ
surface form:
Wright R-2600 (in some applications)
|
| supercharging | single-stage supercharger (most variants) ⓘ |
| usedInConflict | World War II ⓘ |
| usedInRole |
civil aviation
ⓘ
military aviation ⓘ |
| usedOnAircraft |
Boeing 247
ⓘ
surface form:
Boeing 247 (some variants)
Boeing B-17 Flying Fortress ⓘ Curtiss P-36 Hawk ⓘ Douglas DC-2 ⓘ Douglas DC-3 ⓘ Douglas SBD Dauntless ⓘ Grumman F4F Wildcat ⓘ
surface form:
Grumman F4F Wildcat (early variants)
Lockheed Model 10 Electra ⓘ
surface form:
Lockheed Model 10 Electra (some variants)
Martin 139 ⓘ Martin B‑10 ⓘ
surface form:
Martin B-10
Northrop A-17 ⓘ Sikorsky S‑38 ⓘ
surface form:
Sikorsky S-38
Sikorsky S-43 ⓘ |
| valvetrain | overhead valves ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Wright R-1820 radial engine Description of subject: 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.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Wright R-1820 Cyclone
this entity surface form:
Wright R-1820 Cyclone
this entity surface form:
Wright R-1820 Cyclone
this entity surface form:
Wright R-1820 Cyclone
this entity surface form:
Wright R-1820 Cyclone radial engine
this entity surface form:
Wright R-1820 Cyclone
this entity surface form:
Wright R-1820 Cyclone
subject surface form:
Douglas SBD Dauntless