PW4056

Turbofan · Pratt & Whitney
Reaction Turbines
Maximum Takeoff Thrust
252.4 kN
Bypass Ratio
4.7
Overall Pressure Ratio
29.3
Fuel Flow Take Off
2.449 kg/s
NOx Unitaryto CAEP8
121.9 % 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 4.7 Overall Pressure Ratio 29.3 Afterburner No

Pictures

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Similar reaction turbines

Name Aircraft Engine Manufacturer Maximum Takeoff Thrust (kN) Bypass Ratio Overall Pressure Ratio
PW4156 Pratt & Whitney 252.4 4.7 29.3 Compare
PW4256 Pratt & Whitney 252.4 4.7 29.3 Compare
PW4056 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
PW4158 Pratt & Whitney 258 4.6 30.7 Compare
All data (51 fields)
Name
PW4056
EASA ID
1PW041
Aircraft Engine Manufacturer
Pratt & Whitney
Aircraft Engine Type
Turbofan
Fuel
Jet A
Geared Fan
No
Afterburner
No
Streams
2
Bypass Ratio
4.7
Overall Pressure Ratio
29.3
Maximum Takeoff Thrust (kN)
252.4
Hydrocarbon Take Off (g/kg fuel)
0.11
Hydrocarbon Climb Out (g/kg fuel)
0.17
Hydrocarbon Approach (g/kg fuel)
0.25
Hydrocarbon Idle (g/kg fuel)
0.66
Hydrocarbon Unitary Average (g/kN)
1.2
Hydrocarbon Unitary Characteristic (g/kN)
1.8
Hydrocarbon Unitary Characteristicto Regulatory (% of limit)
9.4
Hydrocarbon LTO (g)
288
Carbon Monoxide Take Off (g/kg fuel)
0.08
Carbon Monoxide Climb Out (g/kg fuel)
0.14
Carbon Monoxide Approach (g/kg fuel)
0.9
Carbon Monoxide Idle (g/kg fuel)
11.6
Carbon Monoxide Unitary Average (g/kN)
14.2
Carbon Monoxide Unitary Characteristic (g/kN)
17.4
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit)
14.8
NOx Take Off (g/kg fuel)
32.5
NOx Climb Out (g/kg fuel)
24.6
NOx Approach (g/kg fuel)
11.6
NOx Idle (g/kg fuel)
5
NOx Unitary Average (g/kN)
51.7
NOx Unitary Characteristic (g/kN)
59.9
NOx Unitaryto Standard (% of limit)
60.8
NOx Unitaryto CAEP2 (% of limit)
76
NOx Unitaryto CAEP4 (% of limit)
91
NOx Unitaryto CAEP6 (% of limit)
103.4
NOx Unitaryto CAEP8 (% of limit)
121.9
NOx LTO (g)
13043
Smoke Take Off (SN)
14.3
Smoke Max (SN)
14.3
Smoke Characteristic (SN)
18.4
Smoke Characteristicto Regulatory (% of limit)
100.2
Fuel Flow Take Off (kg/s)
2.449
Fuel Flow Climbout (kg/s)
1.981
Fuel Flow Approach (kg/s)
0.647
Fuel Flow Idle (kg/s)
0.188
Fuel LTO (kg)
813
Fuel Venting Compliant
No
Carbon Monoxide LTO (g)
3587
Emissions Data Status
C
Engine Status
Out of production