Bristol Perseus
E643951
The Bristol Perseus was a British nine-cylinder air-cooled radial aircraft engine of the 1930s that pioneered sleeve-valve technology and powered several military and civil aircraft.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bristol Perseus canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T7133500 — 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 Perseus Context triple: [Bristol Hercules, developedFrom, Bristol Perseus]
-
A.
Bristol Centaurus
The Bristol Centaurus was a powerful British air-cooled radial aircraft engine developed during World War II and used in several late-war and postwar military aircraft.
-
B.
Bristol Orpheus
Bristol Orpheus was a British turbojet engine developed in the 1950s by Bristol Siddeley, widely used in light military aircraft and serving as the basis for later advanced jet and turbofan designs.
-
C.
Bristol Type 142
The Bristol Type 142 was a British twin-engine high-speed civil transport prototype of the 1930s whose advanced design directly led to the development of the Bristol Blenheim light bomber.
-
D.
Bristol Hercules
The Bristol Hercules was a British air-cooled, sleeve-valve radial aircraft engine widely used in World War II bombers and transport aircraft.
-
E.
Bristol Centaurus V
The Bristol Centaurus V was a powerful British air-cooled radial aircraft engine used in late-World War II and postwar high-performance fighters and other military 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: Bristol Perseus Target entity description: The Bristol Perseus was a British nine-cylinder air-cooled radial aircraft engine of the 1930s that pioneered sleeve-valve technology and powered several military and civil aircraft.
-
A.
Bristol Centaurus
The Bristol Centaurus was a powerful British air-cooled radial aircraft engine developed during World War II and used in several late-war and postwar military aircraft.
-
B.
Bristol Orpheus
Bristol Orpheus was a British turbojet engine developed in the 1950s by Bristol Siddeley, widely used in light military aircraft and serving as the basis for later advanced jet and turbofan designs.
-
C.
Bristol Type 142
The Bristol Type 142 was a British twin-engine high-speed civil transport prototype of the 1930s whose advanced design directly led to the development of the Bristol Blenheim light bomber.
-
D.
Bristol Hercules
The Bristol Hercules was a British air-cooled, sleeve-valve radial aircraft engine widely used in World War II bombers and transport aircraft.
-
E.
Bristol Centaurus V
The Bristol Centaurus V was a powerful British air-cooled radial aircraft engine used in late-World War II and postwar high-performance fighters and other military aircraft.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
piston engine ⓘ |
| application |
Bristol Blenheim
NERFINISHED
ⓘ
Bristol Bombay NERFINISHED ⓘ Short Empire flying boat NERFINISHED ⓘ Vickers Wellington (early variants) NERFINISHED ⓘ Westland Lysander (some variants) NERFINISHED ⓘ |
| bore | 5.75 in ⓘ |
| category |
1930s aircraft piston engines
ⓘ
Bristol aircraft engines NERFINISHED ⓘ radial aircraft engines ⓘ |
| compressionRatio | 6.75:1 ⓘ |
| configuration | nine-cylinder radial ⓘ |
| coolingSystem | air-cooled ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| cylinderCount | 9 ⓘ |
| designer | Roy Fedden NERFINISHED ⓘ |
| developedBy | Bristol Engine Company NERFINISHED ⓘ |
| developedFrom | Bristol Aquila (sleeve-valve research lineage) NERFINISHED ⓘ |
| displacement | 1530 cu in ⓘ |
| era | 1930s ⓘ |
| firstRun | 1932 ⓘ |
| fuelType | aviation gasoline ⓘ |
| influenced | later Bristol sleeve-valve engines ⓘ |
| manufacturer | Bristol Aeroplane Company NERFINISHED ⓘ |
| notableFeature |
improved volumetric efficiency due to sleeve valves
ⓘ
reduced valve gear noise compared to poppet-valve engines ⓘ |
| notableVariant |
Perseus XII
NERFINISHED
ⓘ
Perseus XVI NERFINISHED ⓘ Perseus XX NERFINISHED ⓘ |
| pioneeredTechnology | sleeve-valve technology ⓘ |
| powerOutputRange | 580 hp to 930 hp ⓘ |
| productionStart | 1932 ⓘ |
| stroke | 6.5 in ⓘ |
| successor |
Bristol Hercules
NERFINISHED
ⓘ
Bristol Taurus NERFINISHED ⓘ |
| usedBy |
Royal Air Force
ⓘ
civil airlines operating Short Empire flying boats ⓘ |
| usedFor |
civil aircraft
ⓘ
military aircraft ⓘ |
| usedInConflict |
World War II
ⓘ
surface form:
Second World War
|
| valveType | sleeve-valve ⓘ |
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 Perseus Description of subject: The Bristol Perseus was a British nine-cylinder air-cooled radial aircraft engine of the 1930s that pioneered sleeve-valve technology and powered several military and civil aircraft.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Bristol Hercules
subject surface form:
Bristol Centaurus