Bristol Siddeley Pegasus
E292317
The Bristol Siddeley Pegasus is a British turbofan aircraft engine renowned for enabling vertical and short takeoff and landing (V/STOL) in aircraft such as the Harrier jump jet through its vectored-thrust design.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bristol Siddeley Pegasus canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2734915 — 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 Siddeley Pegasus Context triple: [Hawker P.1127, engine, Bristol Siddeley Pegasus]
-
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.
Hawker Osprey
The Hawker Osprey was a British carrier-borne reconnaissance and spotter biplane of the 1930s, operated primarily by the Fleet Air Arm.
-
C.
Hawker P.1127
The Hawker P.1127 was an experimental British vertical/short takeoff and landing (V/STOL) jet aircraft that led directly to the development of the Harrier jump jet.
-
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.
Hawker Siddeley HS 125
The Hawker Siddeley HS 125 is a British twin-engine mid-size business jet, widely used for corporate transport and military liaison roles since the 1960s.
- 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 Siddeley Pegasus Target entity description: The Bristol Siddeley Pegasus is a British turbofan aircraft engine renowned for enabling vertical and short takeoff and landing (V/STOL) in aircraft such as the Harrier jump jet through its vectored-thrust design.
-
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.
Hawker Osprey
The Hawker Osprey was a British carrier-borne reconnaissance and spotter biplane of the 1930s, operated primarily by the Fleet Air Arm.
-
C.
Hawker P.1127
The Hawker P.1127 was an experimental British vertical/short takeoff and landing (V/STOL) jet aircraft that led directly to the development of the Harrier jump jet.
-
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.
Hawker Siddeley HS 125
The Hawker Siddeley HS 125 is a British twin-engine mid-size business jet, widely used for corporate transport and military liaison roles since the 1960s.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
aircraft engine
ⓘ
turbofan engine ⓘ |
| alsoKnownAs |
Pegasus engine
ⓘ
Rolls-Royce Pegasus ⓘ
linked to:
Rolls-Royce Pegasus turbofan
|
| applicationType |
attack aircraft
ⓘ
fighter aircraft ⓘ |
| bypassRatio | low bypass ⓘ |
| compressorStages | eight ⓘ |
| compressorType | axial-centrifugal ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designFeature |
short takeoff and landing capability support
ⓘ
vectored thrust ⓘ vertical takeoff and landing capability support ⓘ |
| developer |
Bristol Engine Company
ⓘ
Gordon Lewis ⓘ Michel Wibault ⓘ |
| enteredService | 1969 ⓘ |
| era | Cold War ⓘ |
| family |
Pegasus engine family
ⓘ
linked to:
Pegasus engine
|
| fanStages | two ⓘ |
| firstRunDate | 1959 ⓘ |
| fuelType | aviation kerosene ⓘ |
| manufacturer |
Bristol Siddeley
ⓘ
Rolls-Royce ⓘ
linked to:
Rolls-Royce plc
|
| notableApplication |
British Aerospace Sea Harrier
ⓘ
linked to:
Sea Harrier fighter aircraft
Harrier GR.1 ⓘ
linked to:
Hawker Siddeley Harrier
Harrier GR.3 ⓘ
linked to:
Hawker Siddeley Harrier
Harrier GR.5 ⓘ
linked to:
Hawker Siddeley Harrier
Harrier GR.7 ⓘ
linked to:
Hawker Siddeley Harrier
Harrier GR.9 ⓘ
linked to:
Hawker Siddeley Harrier
Hawker Siddeley Harrier ⓘ McDonnell Douglas AV-8B Harrier II ⓘ
linked to:
AV-8B Harrier II
|
| notableFor |
enabling Harrier jump jet operations from short or improvised airstrips
ⓘ
pioneering operational vectored-thrust turbofan design ⓘ |
| nozzleConfiguration |
two front cold nozzles
ⓘ
two rear hot nozzles ⓘ |
| powerType | turbofan ⓘ |
| primaryUse | V/STOL aircraft ⓘ |
| role | military aircraft propulsion ⓘ |
| successorCompany | Rolls-Royce plc ⓘ |
| thrustVectoringMethod | four swivelling exhaust nozzles ⓘ |
| turbineStages | two ⓘ |
| typicalMaxThrust | around 23,800 lbf ⓘ |
| usedBy |
Indian Navy
ⓘ
Italian Navy ⓘ Royal Air Force ⓘ Royal Navy ⓘ Spanish Navy ⓘ United States Marine Corps ⓘ |
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 Siddeley Pegasus Description of subject: The Bristol Siddeley Pegasus is a British turbofan aircraft engine renowned for enabling vertical and short takeoff and landing (V/STOL) in aircraft such as the Harrier jump jet through its vectored-thrust design.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Rolls-Royce Pegasus turbofan