Bristol Pegasus radial engine
E167956
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Bristol Pegasus radial engine canonical | 3 |
| Bristol Pegasus engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1432157 — 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: Bristol Pegasus radial engine Context triple: [Vickers Wellington, powerplant, Bristol Pegasus radial engine]
-
A.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
B.
Rolls-Royce Avon engine
The Rolls-Royce Avon engine is a pioneering British axial-flow turbojet developed in the late 1940s that powered numerous military and civilian aircraft, including early jet airliners and fighters.
-
C.
Rolls-Royce Merlin
The Rolls-Royce Merlin is a British liquid-cooled V12 piston aero engine renowned for powering iconic World War II aircraft such as the Spitfire, Hurricane, and Lancaster.
-
D.
Rolls-Royce Griffon
The Rolls-Royce Griffon is a powerful British liquid-cooled V12 aero engine developed during World War II, best known for powering later, high-performance variants of the Supermarine Spitfire and other Royal Air Force aircraft.
-
E.
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.
- 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: Bristol Pegasus radial engine Target entity description: 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.
-
A.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
B.
Rolls-Royce Avon engine
The Rolls-Royce Avon engine is a pioneering British axial-flow turbojet developed in the late 1940s that powered numerous military and civilian aircraft, including early jet airliners and fighters.
-
C.
Rolls-Royce Merlin
The Rolls-Royce Merlin is a British liquid-cooled V12 piston aero engine renowned for powering iconic World War II aircraft such as the Spitfire, Hurricane, and Lancaster.
-
D.
Rolls-Royce Griffon
The Rolls-Royce Griffon is a powerful British liquid-cooled V12 aero engine developed during World War II, best known for powering later, high-performance variants of the Supermarine Spitfire and other Royal Air Force aircraft.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
air‑cooled engine ⓘ radial engine ⓘ |
| bore | 146 mm ⓘ |
| configuration | single‑row radial ⓘ |
| coolingSystem | air‑cooled ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designer | Roy Fedden ⓘ |
| developedFrom | Bristol Jupiter ⓘ |
| displacement | 28.7 L ⓘ |
| era |
World War II
ⓘ
interwar period ⓘ |
| firstRunDate | 1930s ⓘ |
| fuelType | aviation gasoline ⓘ |
| manufacturer | Bristol Aeroplane Company ⓘ |
| notableFeature |
reliable operation on long‑range flights
ⓘ
widespread export use ⓘ |
| notableUse | long‑range record flights in the 1930s ⓘ |
| numberOfCylinders | 9 ⓘ |
| powerOutputRange | 500–1,000 hp class ⓘ |
| productionStatus | out of production ⓘ |
| stroke | 190 mm ⓘ |
| successor | Bristol Hercules ⓘ |
| supercharger | single‑stage supercharger ⓘ |
| usedBy |
Polish Air Force
ⓘ
Royal Air Force ⓘ various export customers ⓘ |
| usedFor |
airliners
ⓘ
bombers ⓘ flying boats ⓘ transport aircraft ⓘ |
| usedInAircraft |
Bristol Bombay
ⓘ
Fairey Swordfish ⓘ
surface form:
Fairey Swordfish (Pegasus‑powered variants)
Fokker T.VIII ⓘ
surface form:
Fokker T.VIII (some variants)
Handley Page Hampden ⓘ
surface form:
Handley Page Hampden (early variants and trials)
PZL.23 Karaś ⓘ PZL.24 ⓘ PZL.37 Łoś ⓘ PZL.23 Karaś ⓘ
surface form:
PZL.43
PZL.49 Miś (projected) ⓘ Savoia‑Marchetti SM.95 (Pegasus‑powered versions) ⓘ Short Empire flying boat ⓘ
surface form:
Short Empire flying boats (some variants)
Short Sunderland Mk I ⓘ
surface form:
Short Sunderland (early prototypes and variants)
Vickers Valentia (re‑engined variants) ⓘ Vickers Wellesley bomber ⓘ
surface form:
Vickers Wellesley (some variants)
Vickers Wellington ⓘ |
| usedInConflict |
Spanish Civil War
ⓘ
surface form:
Spanish Civil War (via export aircraft)
World War II ⓘ |
| valvetrain | sleeve‑valve precursor poppet‑valve design ⓘ |
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: Bristol Pegasus radial engine Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Bristol Pegasus engine
subject surface form:
Vickers Wellesley