PW4056

Turbofan · Pratt & Whitney
Reaction Turbines
Maximum Takeoff Thrust
249.1 kN
Bypass Ratio
4.7
Overall Pressure Ratio
29.3
Fuel Flow Take Off
2.342 kg/s
NOx Unitaryto CAEP8
113.6 % 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 Reduced smoke
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 4.7 Overall Pressure Ratio 29.3 Afterburner No

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Similar reaction turbines

Name Aircraft Engine Manufacturer Maximum Takeoff Thrust (kN) Bypass Ratio Overall Pressure Ratio
PW4156 Pratt & Whitney 249.1 4.7 29.3 Compare
JT9D-7R4H1 Pratt & Whitney 249.1 4.8 26.7 Compare
PW4x56 Pratt & Whitney 249.1 4.8 28.37 Compare
PW4056 Pratt & Whitney 252.4 4.7 29.3 Compare
PW4256 Pratt & Whitney 252.4 4.7 29.3 Compare
JT9D-7R4G2 Pratt & Whitney 243.5 4.8 26.3 Compare
All data (51 fields)
Name
PW4056
EASA ID
1PW042
Aircraft Engine Manufacturer
Pratt & Whitney
Aircraft Engine Type
Turbofan
Fuel
Jet A
Geared Fan
No
Combustion Chamber
Reduced smoke
Afterburner
No
Streams
2
Bypass Ratio
4.7
Overall Pressure Ratio
29.3
Maximum Takeoff Thrust (kN)
249.1
Hydrocarbon Take Off (g/kg fuel)
0.06
Hydrocarbon Climb Out (g/kg fuel)
0.01
Hydrocarbon Approach (g/kg fuel)
0.13
Hydrocarbon Idle (g/kg fuel)
1.92
Hydrocarbon Unitary Average (g/kN)
2.6
Hydrocarbon Unitary Characteristic (g/kN)
4
Hydrocarbon Unitary Characteristicto Regulatory (% of limit)
20.4
Hydrocarbon LTO (g)
652
Carbon Monoxide Take Off (g/kg fuel)
0.44
Carbon Monoxide Climb Out (g/kg fuel)
0.57
Carbon Monoxide Approach (g/kg fuel)
2
Carbon Monoxide Idle (g/kg fuel)
21.86
Carbon Monoxide Unitary Average (g/kN)
30.5
Carbon Monoxide Unitary Characteristic (g/kN)
37.4
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit)
31.7
NOx Take Off (g/kg fuel)
28.1
NOx Climb Out (g/kg fuel)
22.9
NOx Approach (g/kg fuel)
11.6
NOx Idle (g/kg fuel)
4.8
NOx Unitary Average (g/kN)
48.1
NOx Unitary Characteristic (g/kN)
55.8
NOx Unitaryto Standard (% of limit)
56.5
NOx Unitaryto CAEP2 (% of limit)
70.7
NOx Unitaryto CAEP4 (% of limit)
84.6
NOx Unitaryto CAEP6 (% of limit)
96.2
NOx Unitaryto CAEP8 (% of limit)
113.6
NOx LTO (g)
11987
Smoke Take Off (SN)
7.8
Smoke Max (SN)
7.8
Smoke Characteristic (SN)
10
Smoke Characteristicto Regulatory (% of limit)
54.5
Fuel Flow Take Off (kg/s)
2.342
Fuel Flow Climbout (kg/s)
1.93
Fuel Flow Approach (kg/s)
0.658
Fuel Flow Idle (kg/s)
0.208
Fuel LTO (kg)
836
Carbon Monoxide LTO (g)
7597
Emissions Data Status
C
Engine Status
Out of production