Rolls-Royce Viper turbojet

E945330

aircraft engine turbojet engine

The Rolls-Royce Viper turbojet is a compact British jet engine widely used in military trainers and light attack aircraft from the mid-20th century onward.

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All labels observed (3)

Label	Occurrences
Rolls-Royce Viper turbojet canonical	3
Rolls-Royce Viper turbofan	1
Rolls-Royce/Bristol Siddeley Viper turbojet	1

How this entity was disambiguated

This entity first appeared as the object of triple T11750126 — 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 Viper turbojet
Context triple: [Soko G-4 Super Galeb, powerplant, Rolls-Royce Viper turbojet]

A. 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.
B. 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.
C. Rolls-Royce Spey turbofan
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.
D. 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.
E. Rolls-Royce AE 2100
The Rolls-Royce AE 2100 is a modern turboprop aircraft engine widely used in military and regional transport aircraft, known for its improved efficiency, power, and reliability over earlier designs.
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 Viper turbojet
Target entity description: The Rolls-Royce Viper turbojet is a compact British jet engine widely used in military trainers and light attack aircraft from the mid-20th century onward.

A. 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.
B. 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.
C. Rolls-Royce Spey turbofan
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.
D. 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.
E. Rolls-Royce AE 2100
The Rolls-Royce AE 2100 is a modern turboprop aircraft engine widely used in military and regional transport aircraft, known for its improved efficiency, power, and reliability over earlier designs.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	aircraft engine ⓘ turbojet engine ⓘ
airIntake	axial front intake ⓘ
application	Aermacchi MB-326 ⓘ linked to: Macchi MB-326 Aermacchi MB-339 ⓘ linked to: Aermacchi MB-339-A/PAN BAC Jet Provost ⓘ Handley Page Jetstream (early versions) ⓘ linked to: Handley Page Jetstream Hunting Jet Provost ⓘ linked to: BAC Jet Provost IAI Tzukit (Fouga Magister derivative with Viper) ⓘ linked to: Fouga CM.170 Magister Piaggio-Douglas PD.808 ⓘ Soko G-2 Galeb ⓘ Soko G-4 Super Galeb ⓘ Soko J-21 Jastreb ⓘ
category	1950s turbojet engines ⓘ Rolls-Royce aircraft engines ⓘ
compressorType	centrifugal-flow compressor ⓘ
configuration	single-shaft ⓘ
cooling	air-cooled turbine ⓘ
countryOfOrigin	United Kingdom ⓘ
designGoal	ease of maintenance ⓘ low operating cost ⓘ
developedFrom	Armstrong Siddeley Viper ⓘ
engineType	single-spool turbojet ⓘ
enteredService	1950s ⓘ
era	Cold War ⓘ
exhaust	straight jet pipe ⓘ
firstRun	early 1950s ⓘ
fuelType	aviation kerosene ⓘ
intendedUse	light attack aircraft ⓘ military trainer aircraft ⓘ
manufacturer	Rolls-Royce Limited ⓘ
market	export ⓘ
notableFeature	compact size ⓘ simplicity and reliability ⓘ
notableOperator	Italian Air Force ⓘ linked to: Aeronautica Militare Royal Air Force ⓘ Yugoslav Air Force ⓘ
operatorType	air forces ⓘ
originalDesigner	Armstrong Siddeley ⓘ
productionStatus	out of production ⓘ
serviceStatus	still in limited service in some countries ⓘ
thrustClass	approximately 7–18 kN depending on variant ⓘ
usedFor	light ground-attack missions ⓘ pilot training ⓘ weapons training ⓘ
usedInRole	aerobatic team aircraft propulsion ⓘ jet trainer propulsion ⓘ light strike missions ⓘ

How these facts were elicited

Referenced by (5)

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

Soko G-4 Super Galeb → powerplant → Rolls-Royce Viper turbojet ⓘ

Soko J-21 Jastreb → powerplant → Rolls-Royce/Bristol Siddeley Viper turbojet ⓘ

linked to: Rolls-Royce Viper turbojet

BAC 167 Strikemaster → powerplant → Rolls-Royce Viper turbojet ⓘ

MB-339 PAN → powerplant → Rolls-Royce Viper turbojet ⓘ

SOKO G-4 Super Galeb → powerplant → Rolls-Royce Viper turbofan ⓘ

subject linked to: Super Galeb