Armstrong Siddeley Sapphire (turbojet engine)

E846713

The Armstrong Siddeley Sapphire is a British axial-flow turbojet engine developed in the late 1940s and widely used in early Cold War jet aircraft such as the Hawker Hunter and Gloster Javelin.

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Observed surface forms (1)

Surface form Occurrences
Armstrong Siddeley Sapphire 0

Statements (47)

Predicate Object
instanceOf turbojet engine
alsoKnownAs ASSa.5 (one of the main variants) NERFINISHED
Sapphire Sa.6 NERFINISHED
Sapphire Sa.7 NERFINISHED
application bomber aircraft
fighter aircraft
research and test aircraft
category British aircraft engine
Cold War jet engine
axial-compressor gas turbine
compressorStages approximately 10–12 stages (depending on variant)
countryOfOrigin United Kingdom
designFeature annular combustion chamber
axial-flow compressor
single-stage turbine (early versions)
developedFrom Metrovick F.2 (design influence via team)
developedInPeriod late 1940s
enteredService early 1950s
era early jet age
firstRun 1948
fuelType kerosene-based jet fuel
historicalSignificance one of the principal British axial-flow turbojets of the early Cold War
manufacturer Armstrong Siddeley NERFINISHED
notableCharacteristic good high-altitude performance
high reliability for its era
poweredFirstFlightOf Gloster Javelin prototype
early Hawker Hunter variants
productionPeriod 1950s
status out of production
successor Rolls-Royce Avon (in many RAF types) NERFINISHED
thrustClass 7000–11000 lbf
turbineStages 1 or 2 stages (depending on variant)
usedBy Royal Air Force
Royal Australian Air Force (via Hawker Hunter and Canberra use) NERFINISHED
usedFor aerodynamic research
engine development testing
operational service
usedInAircraft Avro Ashton (testbed) NERFINISHED
English Electric Canberra NERFINISHED
Gloster Javelin NERFINISHED
Handley Page Victor (early prototypes) NERFINISHED
Hawker Hunter NERFINISHED
Short Sperrin (prototype) NERFINISHED
usedInConflict Cold War NERFINISHED
usedInRole fighter-bomber (via Hawker Hunter)
interceptor aircraft (via Gloster Javelin)
light bomber (via Canberra)

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Armstrong Siddeley notableProduct Armstrong Siddeley Sapphire (turbojet engine)