JT9D-7R4H1

Turbofan · Pratt & Whitney
Reaction Turbines
Maximum Takeoff Thrust
249.1 kN
Bypass Ratio
4.8
Overall Pressure Ratio
26.7
Fuel Flow Take Off
2.512 kg/s
NOx Unitaryto CAEP8
150 % 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 4.8 Overall Pressure Ratio 26.7 Afterburner No

Pictures

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Similar reaction turbines

Name Aircraft Engine Manufacturer Maximum Takeoff Thrust (kN) Bypass Ratio Overall Pressure Ratio
PW4x56 Pratt & Whitney 249.1 4.8 28.37 Compare
PW4056 Pratt & Whitney 249.1 4.7 29.3 Compare
PW4156 Pratt & Whitney 249.1 4.7 29.3 Compare
JT9D-7R4G2 Pratt & Whitney 243.5 4.8 26.3 Compare
PW4256 Pratt & Whitney 252.4 4.7 29.3 Compare
CF6-80C2B1 General Electric Company 249.01 5.1 29.53 Compare
All data (51 fields)
Name
JT9D-7R4H1
EASA ID
1PW030
Aircraft Engine Manufacturer
Pratt & Whitney
Aircraft Engine Type
Turbofan
Fuel
Jet A
Geared Fan
No
Afterburner
No
Streams
2
Bypass Ratio
4.8
Overall Pressure Ratio
26.7
Maximum Takeoff Thrust (kN)
249.1
Hydrocarbon Take Off (g/kg fuel)
0.15
Hydrocarbon Climb Out (g/kg fuel)
0.14
Hydrocarbon Approach (g/kg fuel)
0.18
Hydrocarbon Idle (g/kg fuel)
1.48
Hydrocarbon Unitary Average (g/kN)
2.7
Hydrocarbon Unitary Characteristic (g/kN)
3
Hydrocarbon Unitary Characteristicto Regulatory (% of limit)
15.5
Hydrocarbon LTO (g)
651
Carbon Monoxide Take Off (g/kg fuel)
0.74
Carbon Monoxide Climb Out (g/kg fuel)
0.63
Carbon Monoxide Approach (g/kg fuel)
1.39
Carbon Monoxide Idle (g/kg fuel)
11.63
Carbon Monoxide Unitary Average (g/kN)
20.4
Carbon Monoxide Unitary Characteristic (g/kN)
21.7
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit)
18.4
NOx Take Off (g/kg fuel)
45.2
NOx Climb Out (g/kg fuel)
30
NOx Approach (g/kg fuel)
8.9
NOx Idle (g/kg fuel)
3.8
NOx Unitary Average (g/kN)
65.2
NOx Unitary Characteristic (g/kN)
68.2
NOx Unitaryto Standard (% of limit)
73
NOx Unitaryto CAEP2 (% of limit)
91.2
NOx Unitaryto CAEP4 (% of limit)
110.4
NOx Unitaryto CAEP6 (% of limit)
125.5
NOx Unitaryto CAEP8 (% of limit)
150
NOx LTO (g)
15683
Smoke Take Off (SN)
7.6
Smoke Max (SN)
7.6
Smoke Characteristic (SN)
8.4
Smoke Characteristicto Regulatory (% of limit)
45.4
Fuel Flow Take Off (kg/s)
2.512
Fuel Flow Climbout (kg/s)
1.999
Fuel Flow Approach (kg/s)
0.7227
Fuel Flow Idle (kg/s)
0.2454
Fuel LTO (kg)
926
Fuel Venting Compliant
No
Carbon Monoxide LTO (g)
4938
Emissions Data Status
C
Engine Status
Out of production