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gptkbp:instanceOf
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aircraft engine
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|
gptkbp:aircraft
|
compatible with various airframes
|
|
gptkbp:application
|
commercial aviation
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gptkbp:certifications
|
EASA_certified
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gptkbp:competitors
|
gptkb:General_Electric_CF6
|
|
gptkbp:construction_cost
|
£10 million
|
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gptkbp:constructionMaterial
|
advanced alloys
|
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gptkbp:controls
|
gptkb:full_authority_digital_engine_control_(FADEC)
|
|
gptkbp:coolingSystem
|
air-cooled
fan cooling
|
|
gptkbp:customerBase
|
international airlines
|
|
gptkbp:customerService
|
global support network
|
|
gptkbp:design_feature
|
modular design
|
|
gptkbp:diameter
|
2.5 m
1.2 m
|
|
gptkbp:emissionsStandard
|
compliant_with_ICAO_standards
|
|
gptkbp:engine
|
gptkb:Rolls-Royce_RB.211-22B
modular assembly
|
|
gptkbp:engineConfiguration
|
twin-spool
|
|
gptkbp:engineType
|
axial
high bypass ratio
air start
|
|
gptkbp:environmental_impact
|
reduced emissions
|
|
gptkbp:firstRace
|
1960
|
|
gptkbp:fuel_capacity
|
high
0.8 kg/kN·h
|
|
gptkbp:fuelType
|
gptkb:Jet_A-1
dual fuel system
|
|
gptkbp:hasArea
|
extensive testing conducted
|
|
gptkbp:historical_significance
|
pioneered turbofan technology
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Rolls-Royce B81
|
|
gptkbp:influence
|
influenced modern turbofan designs
|
|
gptkbp:innovation
|
quiet operation
|
|
gptkbp:inspiration
|
military applications
|
|
gptkbp:is_used_in
|
gptkb:Boeing_707
|
|
gptkbp:legacy
|
influenced future designs
|
|
gptkbp:length
|
3.5 m
|
|
gptkbp:maintenance
|
5,000 hours
|
|
gptkbp:manufacturer
|
gptkb:Rolls-Royce_Holdings
|
|
gptkbp:market_segment
|
wide-body aircraft
|
|
gptkbp:noise_level
|
low
|
|
gptkbp:notable_feature
|
high efficiency
|
|
gptkbp:number_of_stages
|
5
|
|
gptkbp:operational_status
|
retired
|
|
gptkbp:operationalRange
|
high_altitude
|
|
gptkbp:partnerships
|
collaborations with airlines
|
|
gptkbp:performances
|
long
high reliability
reliable
|
|
gptkbp:produces
|
1,500
|
|
gptkbp:productionYears
|
1960-1975
|
|
gptkbp:propulsion
|
80 kN
|
|
gptkbp:related_engine
|
gptkb:Rolls-Royce_RB.163
|
|
gptkbp:serviceType
|
1965
|
|
gptkbp:successor
|
gptkb:Rolls-Royce_RB211
|
|
gptkbp:team
|
Rolls-Royce_engineers
|
|
gptkbp:training
|
engine maintenance training offered
|
|
gptkbp:type
|
turbofan engine
|
|
gptkbp:weight
|
1,200 kg
|