Rolls-Royce Spey turbofan

E371055

low-bypass turbofan turbofan engine

The Rolls-Royce Spey turbofan is a British low-bypass jet engine widely used from the 1960s in both military and civilian aircraft for its reliability and compact, efficient design.

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All labels observed (5)

Label	Occurrences
Rolls-Royce Spey turbofan canonical	7
Rolls-Royce Spey	4
Rolls-Royce RB.163 Spey (civil series)	1
Rolls-Royce Spey 202	1
Rolls-Royce Spey turbofan engines	1

How this entity was disambiguated

This entity first appeared as the object of triple T3581487 — 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: Rolls-Royce Spey turbofan
Context triple: [Nimrod MR2, engineType, Rolls-Royce Spey turbofan]

A. Rolls-Royce Pegasus turbofan
The Rolls-Royce Pegasus turbofan is a unique vectored-thrust jet engine that enables vertical and short takeoff and landing (V/STOL) capability in aircraft such as the Harrier family.
B. Rolls-Royce Olympus turbojet
The Rolls-Royce Olympus turbojet is a British axial-flow jet engine best known for powering aircraft such as the Avro Vulcan bomber and later versions of the supersonic airliner Concorde.
C. Rolls-Royce Adour turbofan
The Rolls-Royce Adour is a family of low-bypass turbofan engines developed for military trainer and light attack aircraft, noted for their reliability and widespread use in jets such as the SEPECAT Jaguar and BAE Systems Hawk.
D. Rolls-Royce AE 3007A1/3
The Rolls-Royce AE 3007A1/3 is a high-bypass turbofan engine variant in the AE 3007 family, designed primarily to power regional jets such as the Embraer ERJ 135.
E. Rolls-Royce/Snecma Olympus 593
The Rolls-Royce/Snecma Olympus 593 is a turbojet engine jointly developed by British and French manufacturers to power the supersonic Concorde airliner at sustained Mach 2 cruise speeds.
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: Rolls-Royce Spey turbofan
Target entity description: The Rolls-Royce Spey turbofan is a British low-bypass jet engine widely used from the 1960s in both military and civilian aircraft for its reliability and compact, efficient design.

A. Rolls-Royce Pegasus turbofan
The Rolls-Royce Pegasus turbofan is a unique vectored-thrust jet engine that enables vertical and short takeoff and landing (V/STOL) capability in aircraft such as the Harrier family.
B. Rolls-Royce Olympus turbojet
The Rolls-Royce Olympus turbojet is a British axial-flow jet engine best known for powering aircraft such as the Avro Vulcan bomber and later versions of the supersonic airliner Concorde.
C. Rolls-Royce Adour turbofan
The Rolls-Royce Adour is a family of low-bypass turbofan engines developed for military trainer and light attack aircraft, noted for their reliability and widespread use in jets such as the SEPECAT Jaguar and BAE Systems Hawk.
D. Rolls-Royce AE 3007A1/3
The Rolls-Royce AE 3007A1/3 is a high-bypass turbofan engine variant in the AE 3007 family, designed primarily to power regional jets such as the Embraer ERJ 135.
E. Rolls-Royce/Snecma Olympus 593
The Rolls-Royce/Snecma Olympus 593 is a turbojet engine jointly developed by British and French manufacturers to power the supersonic Concorde airliner at sustained Mach 2 cruise speeds.
F. None of above. chosen

Statements (50)

Predicate	Object
instanceOf	low-bypass turbofan ⓘ turbofan engine ⓘ
alsoKnownAs	RB.168 ⓘ
application	business jets ⓘ short-haul airliners ⓘ strike aircraft ⓘ
bypassRatio	low bypass ratio ⓘ
countryOfOrigin	United Kingdom ⓘ
designFeature	annular combustor ⓘ axial-flow compressor ⓘ three-stage low-pressure turbine ⓘ two-spool design ⓘ two-stage high-pressure turbine ⓘ
enteredService	1964 ⓘ
era	Cold War ⓘ
firstRun	1960 ⓘ
licenseBuiltAs	Xian WS-9 ⓘ
manufacturer	Rolls-Royce Limited ⓘ
notableCharacteristic	compact design ⓘ fuel efficiency for its time ⓘ high reliability ⓘ
notableVariant	Spey Mk.101 ⓘ Spey Mk.202 ⓘ Spey Mk.203 ⓘ linked to: Spey Mk.202 Spey Mk.511 ⓘ Spey Mk.512 ⓘ Spey Mk.555-15H ⓘ
relatedEngineFamily	Rolls-Royce RB.163 Spey (civil series) ⓘ linked to: Rolls-Royce Spey turbofan
role	civil aircraft engine ⓘ military aircraft engine ⓘ
status	largely out of production ⓘ
successor	Rolls-Royce Tay ⓘ linked to: Rolls‑Royce Tay 620
support	still supported in service by maintenance organizations ⓘ
thrustClass	9000 to 12000 lbf (civil versions) ⓘ up to about 20000 lbf (military afterburning versions) ⓘ
usedBy	Italian Air Force ⓘ linked to: Aeronautica Militare People's Liberation Army Naval Air Force ⓘ Royal Air Force ⓘ Royal Navy ⓘ
usedIn	AMX International AMX ⓘ linked to: AMX International BAC One-Eleven ⓘ linked to: One-Eleven short-haul jet Blackburn Buccaneer ⓘ linked to: Hawker Siddeley Buccaneer Dassault Mercure ⓘ Fokker F28 Fellowship ⓘ linked to: Fokker F28 Grumman Gulfstream II ⓘ Hawker Siddeley Trident ⓘ McDonnell Douglas F-4 Phantom II ⓘ linked to: McDonnell F-4 Phantom II Saab 37 Viggen (test and development) ⓘ linked to: Saab 37 Viggen Vickers VC10 (testbed) ⓘ linked to: RAF VC10 Xian JH-7 ⓘ

How these facts were elicited

Referenced by (14)

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

Nimrod MR2 → engineType → Rolls-Royce Spey turbofan ⓘ

Hawker Siddeley Trident → engineType → Rolls-Royce Spey turbofan ⓘ

McDonnell Douglas Phantom FGR.2 → usesEngine → Rolls-Royce Spey turbofan ⓘ

Rolls-Royce Conway → successor → Rolls-Royce Spey ⓘ

subject linked to: Rolls-Royce Conway engine