|
gptkbp:instance_of
|
gptkb:jet_engine
|
|
gptkbp:aircraft_type
|
DC-8, Boeing 707
|
|
gptkbp:application
|
commercial aviation
|
|
gptkbp:average_temperature
|
high
|
|
gptkbp:certification
|
FAA certified
|
|
gptkbp:compressor_type
|
axial
|
|
gptkbp:control_system
|
hydromechanical
|
|
gptkbp:cooling_system
|
air-cooled
|
|
gptkbp:design
|
20,000 hours
Pratt & Whitney engineers
|
|
gptkbp:design_features
|
high bypass ratio
|
|
gptkbp:development
|
1950s to 1960s
|
|
gptkbp:diameter
|
5 ft 6 in
3 ft 9 in
|
|
gptkbp:economic_impact
|
significant in aviation history
|
|
gptkbp:emissions_standard
|
Stage 2
|
|
gptkbp:engine
|
gptkb:JT3_D
various enhancements over time
|
|
gptkbp:engine_configuration
|
variable
twin-spool
pylon-mounted
twin-engine layout
|
|
gptkbp:engine_power
|
high reliability
reliable
|
|
gptkbp:engine_type
|
bypass engine
|
|
gptkbp:environmental_impact
|
reduced emissions
|
|
gptkbp:first_flight
|
gptkb:1961
|
|
gptkbp:fuel_capacity
|
lightweight
|
|
gptkbp:fuel_economy
|
high
0.5 lb/lbf/hr
optimized for efficiency
|
|
gptkbp:fuel_type
|
gptkb:Jet_A
dual fuel pumps
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
JT3 D-3
|
|
gptkbp:is_tested_for
|
extensive ground testing
|
|
gptkbp:legacy
|
influenced future turbofan designs
|
|
gptkbp:length
|
12 ft 6 in
|
|
gptkbp:maintenance
|
5,000 hours
|
|
gptkbp:manufacturer
|
gptkb:Pratt_&_Whitney
|
|
gptkbp:market_segment
|
commercial jetliners
|
|
gptkbp:noise_level
|
gptkb:advanced_technology
low
|
|
gptkbp:notable_users
|
gptkb:Douglas_DC-8
|
|
gptkbp:number_of_stages
|
gptkb:10
|
|
gptkbp:operational_history
|
used in commercial flights
|
|
gptkbp:operational_range
|
long-haul flights
|
|
gptkbp:produces
|
over 1,000 units
|
|
gptkbp:production_years
|
1961 to 1980s
|
|
gptkbp:propulsion
|
yes
18,500 lbf
|
|
gptkbp:related_aircraft
|
wide-body aircraft
|
|
gptkbp:replaced_by
|
gptkb:CF6_engine
|
|
gptkbp:successor
|
gptkb:JT8_D
|
|
gptkbp:turbine_type
|
high bypass ratio
|
|
gptkbp:type
|
gptkb:turbofan_engine
|
|
gptkbp:weight
|
3,000 lb
|
|
gptkbp:bfsParent
|
gptkb:JT3_D-3_B
|
|
gptkbp:bfsLayer
|
6
|