JT9D-70A

Turbofan · Pratt & Whitney
Reaction Turbines
Maximum Takeoff Thrust
235.8 kN
Bypass Ratio
4.9
Overall Pressure Ratio
24.5
Fuel Flow Take Off
2.4419 kg/s
NOx Unitaryto CAEP8
148.9 % 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 4.9 Overall Pressure Ratio 24.5 Afterburner No

Pictures

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All data (54 fields)
Name
JT9D-70A
EASA ID
1PW034
Aircraft Engine Manufacturer
Pratt & Whitney
Aircraft Engine Type
Turbofan
Fuel
Jet A
Geared Fan
No
Afterburner
No
Streams
2
Bypass Ratio
4.9
Overall Pressure Ratio
24.5
Maximum Takeoff Thrust (kN)
235.8
Hydrocarbon Take Off (g/kg fuel)
0.2
Hydrocarbon Climb Out (g/kg fuel)
0.2
Hydrocarbon Approach (g/kg fuel)
0.3
Hydrocarbon Idle (g/kg fuel)
12
Hydrocarbon Unitary Average (g/kN)
20
Hydrocarbon Unitary Sigma (g/kN)
2.4
Hydrocarbon Unitary Characteristic (g/kN)
26
Hydrocarbon Unitary Characteristicto Regulatory (% of limit)
132.8
Hydrocarbon LTO (g)
4559
Carbon Monoxide Take Off (g/kg fuel)
0.2
Carbon Monoxide Climb Out (g/kg fuel)
0.2
Carbon Monoxide Approach (g/kg fuel)
1.7
Carbon Monoxide Idle (g/kg fuel)
53
Carbon Monoxide Unitary Average (g/kN)
87.7
Carbon Monoxide Unitary SD (g/kN)
5.9
Carbon Monoxide Unitary Characteristic (g/kN)
107.6
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit)
91.2
NOx Take Off (g/kg fuel)
31.6
NOx Climb Out (g/kg fuel)
25.6
NOx Approach (g/kg fuel)
7.8
NOx Idle (g/kg fuel)
3
NOx Unitary Average (g/kN)
54.4
NOx Unitary SD (g/kN)
3
NOx Unitary Characteristic (g/kN)
63.1
NOx Unitaryto Standard (% of limit)
70.9
NOx Unitaryto CAEP2 (% of limit)
88.6
NOx Unitaryto CAEP4 (% of limit)
108.3
NOx Unitaryto CAEP6 (% of limit)
123.1
NOx Unitaryto CAEP8 (% of limit)
148.9
NOx LTO (g)
12381
Smoke Max (SN)
8
Smoke Sigma (SN)
1
Smoke Characteristic (SN)
10.3
Smoke Characteristicto Regulatory (% of limit)
55
Fuel Flow Take Off (kg/s)
2.4419
Fuel Flow Climbout (kg/s)
1.9996
Fuel Flow Approach (kg/s)
0.6804
Fuel Flow Idle (kg/s)
0.237
Fuel LTO (kg)
900
Fuel Venting Compliant
No
Carbon Monoxide LTO (g)
19946
Emissions Data Status
PR
Engine Status
Out of production