JT9D-20

Turbofan · Pratt & Whitney
Reaction Turbines
Maximum Takeoff Thrust
205.3 kN
Overall Pressure Ratio
20.3
Fuel Flow Take Off
2.099 kg/s
NOx Unitaryto CAEP8
169.5 % of limit

Architecture

Fan Fan Stages — Fan Blades — Fan Technology — Fan Pressure Ratio —
Gearbox Geared Fan No Gear — Reduction Ratio —
LP compressor Low-Pressure Compressor Stages — Low-Pressure Compressor Technology — BP Compressor Pressure Ratio —
IP compressor Intermediary-Pressure Compressor Stages — Intermediary-Pressure Compressor Technology — IP Compressor Pressure Ratio —
HP compressor High-Pressure Compressor Stages — High-Pressure Compressor Technology — HP Compressor Pressure Ratio —
Combustor Combustion Chamber —
HP turbine High Pressure Compressor Stages — High-Pressure Turbine Technology —
IP turbine Intermediary-Pressure Turbine Stages — Intermediary-Pressure Turbine Technology —
LP turbine Low-Pressure Turbine Stages — Low-Pressure Turbine Technology —
Whole engine Streams 2 Bypass Ratio — Overall Pressure Ratio 20.3 Afterburner No

Pictures

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Similar reaction turbines

Name Aircraft Engine Manufacturer Maximum Takeoff Thrust (kN) Bypass Ratio Overall Pressure Ratio
JT9D-7A Pratt & Whitney 205.3 20.3 Compare
JT9D-20 Pratt & Whitney 205.3 20.3 Compare
CF6-45A GE Aircraft Engines 202.8 4.3 25.38 Compare
CF6-45A2 GE Aircraft Engines 202.8 4.3 25.9 Compare
JT9D-7 Pratt & Whitney 202.4 21.5 Compare
CF6-80A GE Aircraft Engines 208.8 5 29 Compare
All data (55 fields)
Name
JT9D-20
EASA ID
1PW031
Aircraft Engine Manufacturer
Pratt & Whitney
Aircraft Engine Type
Turbofan
Fuel
DERD 2494
Geared Fan
No
Afterburner
No
Streams
2
Overall Pressure Ratio
20.3
Maximum Takeoff Thrust (kN)
205.3
Hydrocarbon Take Off (g/kg fuel)
0.1
Hydrocarbon Climb Out (g/kg fuel)
0.1
Hydrocarbon Approach (g/kg fuel)
1.3
Hydrocarbon Idle (g/kg fuel)
36.1
Hydrocarbon Unitary Average (g/kN)
59
Hydrocarbon Unitary Characteristic (g/kN)
64
Hydrocarbon Unitary Characteristicto Regulatory (% of limit)
326.6
Hydrocarbon LTO (g)
12108
Carbon Monoxide Take Off (g/kg fuel)
0
Carbon Monoxide Climb Out (g/kg fuel)
0
Carbon Monoxide Approach (g/kg fuel)
7.6
Carbon Monoxide Idle (g/kg fuel)
83.6
Carbon Monoxide Unitary Average (g/kN)
139.6
Carbon Monoxide Unitary Characteristic (g/kN)
145.6
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit)
123.4
NOx Take Off (g/kg fuel)
38.7
NOx Climb Out (g/kg fuel)
28.5
NOx Approach (g/kg fuel)
7.6
NOx Idle (g/kg fuel)
3.1
NOx Unitary Average (g/kN)
59.9
NOx Unitary Characteristic (g/kN)
61.8
NOx Unitaryto Standard (% of limit)
76.7
NOx Unitaryto CAEP2 (% of limit)
95.8
NOx Unitaryto CAEP4 (% of limit)
120
NOx Unitaryto CAEP6 (% of limit)
136.4
NOx Unitaryto CAEP8 (% of limit)
169.5
NOx LTO (g)
12291
Smoke Take Off (SN)
12.3
Smoke Climb Out (SN)
9.5
Smoke Approach (SN)
2.5
Smoke Idle (SN)
0.7
Smoke Max (SN)
12.3
Smoke Characteristic (SN)
14.5
Smoke Characteristicto Regulatory (% of limit)
74.4
Fuel Flow Take Off (kg/s)
2.099
Fuel Flow Climbout (kg/s)
1.789
Fuel Flow Approach (kg/s)
0.619
Fuel Flow Idle (kg/s)
0.211
Fuel LTO (kg)
802
Fuel Venting Compliant
No
Carbon Monoxide LTO (g)
28647
Emissions Data Status
PR
Emissions Data Superseded
Yes
Emissions Superseded By
8PW088
Engine Status
Out of production