|
gptkbp:instance_of
|
gptkb:turbofan_engine
gptkb:jet_engine
|
|
gptkbp:application
|
commercial aviation
|
|
gptkbp:armament
|
wide chord
|
|
gptkbp:certification
|
FAA certified
|
|
gptkbp:compressor_type
|
axial
|
|
gptkbp:control_system
|
hydromechanical
|
|
gptkbp:cooling_system
|
air-cooled
|
|
gptkbp:customer_base
|
airlines worldwide
|
|
gptkbp:design
|
Pratt & Whitney engineers
|
|
gptkbp:design_features
|
high bypass ratio
|
|
gptkbp:design_purpose
|
efficiency
|
|
gptkbp:diameter
|
3.0 ft
2.5 ft
|
|
gptkbp:economic_impact
|
significant in 1960s and 1970s
|
|
gptkbp:emissions_standard
|
compliant with regulations
|
|
gptkbp:engine
|
gptkb:JT8_D
|
|
gptkbp:engine_configuration
|
twin-spool
pylon-mounted
twin-spool turbofan
|
|
gptkbp:engine_power
|
up to 20,000 hours
optimized for cruise
|
|
gptkbp:engine_type
|
turbofan
|
|
gptkbp:environmental_impact
|
reduced emissions compared to predecessors
|
|
gptkbp:first_flight
|
gptkb:1965
|
|
gptkbp:fuel_economy
|
high
0.5 lb/lbf/hr
optimized for long flights
|
|
gptkbp:fuel_type
|
gptkb:Jet_A
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
JT3 D-2
|
|
gptkbp:influenced_by
|
gptkb:JT3_D-1
|
|
gptkbp:innovation
|
incorporated new technologies
|
|
gptkbp:installation
|
easy installation on aircraft
|
|
gptkbp:is_tested_for
|
extensive testing before certification
|
|
gptkbp:legacy
|
influenced future turbofan designs
|
|
gptkbp:legacy_engines
|
JT3 D-1, JT8 D
|
|
gptkbp:length
|
12.5 ft
|
|
gptkbp:maintenance
|
moderate
5,000 hours
|
|
gptkbp:manufacturer
|
gptkb:Pratt_&_Whitney
|
|
gptkbp:market_segment
|
regional jets
|
|
gptkbp:material
|
advanced alloys
|
|
gptkbp:noise_level
|
low
|
|
gptkbp:number_of_stages
|
gptkb:5
|
|
gptkbp:operational_cost
|
competitive
|
|
gptkbp:operational_history
|
used from 1965 to 1990s
|
|
gptkbp:operational_range
|
high altitude
|
|
gptkbp:operational_use
|
commercial air travel
|
|
gptkbp:produces
|
over 1,000
|
|
gptkbp:production_years
|
gptkb:1980s
gptkb:1965
|
|
gptkbp:propulsion
|
18,500 lbf
20,000 lbf
|
|
gptkbp:related_aircraft
|
gptkb:DC-8_series
|
|
gptkbp:reliability
|
high
|
|
gptkbp:successor
|
gptkb:JT8_D
|
|
gptkbp:successor_engines
|
gptkb:PW4000
|
|
gptkbp:turbine_blades
|
single crystal
|
|
gptkbp:turbine_type
|
high bypass ratio
|
|
gptkbp:type
|
gptkb:jet_engine
|
|
gptkbp:used_in
|
gptkb:Mc_Donnell_Douglas_DC-8
|
|
gptkbp:weight
|
3,000 lb
|
|
gptkbp:bfsParent
|
gptkb:Pratt_&_Whitney_JT3_D
|
|
gptkbp:bfsLayer
|
5
|