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gptkbp:instance_of
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gptkb:jet_engine
|
|
gptkbp:aircraft_operated
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gptkb:Boeing_727
gptkb:Mc_Donnell_Douglas_DC-10
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gptkbp:aircraft_type
|
regional jets
|
|
gptkbp:application
|
commercial aviation
|
|
gptkbp:armament
|
composite
|
|
gptkbp:average_temperature
|
high
1,500 ° F
|
|
gptkbp:certification
|
FAA certified
|
|
gptkbp:combustor_type
|
annular combustor
|
|
gptkbp:competitors
|
gptkb:CF34
gptkb:CFM56
|
|
gptkbp:compressor_type
|
axial compressor
|
|
gptkbp:control_system
|
digital control system
hydromechanical control
|
|
gptkbp:cooling_system
|
air-cooled
|
|
gptkbp:design
|
low bypass ratio
|
|
gptkbp:design_feature
|
modular design
|
|
gptkbp:diameter
|
3.0 ft
5.0 ft
|
|
gptkbp:emissions_standard
|
moderate
Stage 2
|
|
gptkbp:engine
|
gptkb:JT8_D_family
Brayton cycle
high bypass ratio
JT8 family
scheduled overhaul
major overhaul every 20,000 hours
|
|
gptkbp:engine_configuration
|
twin-engine
high bypass ratio
pylon-mounted
conventional design
14,000 lbf to 18,500 lbf
|
|
gptkbp:engine_power
|
reliable performance
optimized for cruise
|
|
gptkbp:engine_type
|
gptkb:JT8_D-200
gptkb:JT8_D-1
gptkb:JT8_D-15
gptkb:JT8_D-17
gptkb:JT8_D-7
|
|
gptkbp:exhaust_system
|
subsonic intake
|
|
gptkbp:fan_art
|
single-stage fan
|
|
gptkbp:first_flight
|
gptkb:1965
|
|
gptkbp:fuel_economy
|
moderate
0.8 lb/lbf/hr
|
|
gptkbp:fuel_type
|
gptkb:gasoline
gptkb:Jet_A
hydromechanical
|
|
gptkbp:has_programs
|
JT8 D development program
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
JT8 D engine
|
|
gptkbp:ignition_system
|
spark ignition
|
|
gptkbp:is_tested_for
|
static testing
extensive testing
|
|
gptkbp:legal_principle
|
gptkb:jet_engine
|
|
gptkbp:length
|
12.5 ft
4.5 ft
|
|
gptkbp:maintenance
|
4,000 hours
|
|
gptkbp:manufacturer
|
gptkb:Pratt_&_Whitney
|
|
gptkbp:market
|
commercial jet market
|
|
gptkbp:market_segment
|
regional jets
|
|
gptkbp:noise_level
|
high
acoustic liners
limited noise reduction
|
|
gptkbp:notable_users
|
gptkb:Delta_Air_Lines
gptkb:United_Airlines
gptkb:Alaska_Airlines
gptkb:Eastern_Air_Lines
gptkb:Continental_Airlines
|
|
gptkbp:number_of_stages
|
gptkb:5
|
|
gptkbp:produced
|
gptkb:2000
|
|
gptkbp:produces
|
over 14,000
|
|
gptkbp:propulsion
|
yes
6.17
18,500 to 22,000 lbf
cascade thrust reverser
14,000 to 18,500 lbf
|
|
gptkbp:reliability
|
high
|
|
gptkbp:retirement
|
2000s
|
|
gptkbp:service_ceiling
|
40,000 ft
|
|
gptkbp:service_entry
|
gptkb:1965
|
|
gptkbp:successor
|
gptkb:JT8_D-200
|
|
gptkbp:turbine_type
|
single-stage turbine
axial turbine
|
|
gptkbp:type
|
gptkb:turbofan_engine
|
|
gptkbp:used_in
|
gptkb:Boeing_727
gptkb:Mc_Donnell_Douglas_DC-10
|
|
gptkbp:weight
|
3,000 lb
|
|
gptkbp:bfsParent
|
gptkb:JT3_D_engine_family
|
|
gptkbp:bfsLayer
|
7
|