Trent XWB-79B

Turbofan · Rolls-Royce

Reaction Turbines

Maximum Takeoff Thrust

355.2 kN

Bypass Ratio

9.15

Overall Pressure Ratio

38.8

Fuel Flow Take Off

2.601 kg/s

NOx Unitaryto CAEP8

74.1 % 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 Phase5 Tiled
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 9.15	Overall Pressure Ratio 38.8	Afterburner No

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Name	Aircraft Engine Manufacturer	Maximum Takeoff Thrust (kN)	Bypass Ratio	Overall Pressure Ratio
Trent XWB-79	Rolls-Royce	355.2	9.15	38.80983	Compare
Trent XWB-79B	Rolls-Royce	355.2	9.15	38.80983	Compare
Trent XWB-79BEP	Rolls-Royce	355.17	8.89	41.52	Compare
Trent XWB-79EP	Rolls-Royce	355.17	8.89	41.52	Compare
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All data (64 fields)

Name: Trent XWB-79B
EASA ID: 18RR077
Aircraft Engine Manufacturer: Rolls-Royce
Aircraft Engine Type: Turbofan
Geared Fan: No
Combustion Chamber: Phase5 Tiled
Afterburner: No
Streams: 2
Bypass Ratio: 9.15
Overall Pressure Ratio: 38.8
Maximum Takeoff Thrust (kN): 355.2
Hydrocarbon Take Off (g/kg fuel): 0
Hydrocarbon Climb Out (g/kg fuel): 0
Hydrocarbon Approach (g/kg fuel): 0.01
Hydrocarbon Idle (g/kg fuel): 1.22
Hydrocarbon Unitary Average (g/kN): 1.5
Hydrocarbon Unitary Sigma (g/kN): 0.23
Hydrocarbon Unitary Range (g/kN): 1.34-1.77
Hydrocarbon Unitary Characteristic (g/kN): 1.75
Hydrocarbon Unitary Characteristicto Regulatory (% of limit): 8.9
Hydrocarbon LTO (g): 534
Carbon Monoxide Take Off (g/kg fuel): 0.39
Carbon Monoxide Climb Out (g/kg fuel): 0.4
Carbon Monoxide Approach (g/kg fuel): 1.36
Carbon Monoxide Idle (g/kg fuel): 23.37
Carbon Monoxide Unitary Average (g/kN): 29.84
Carbon Monoxide Unitary SD (g/kN): 2.46
Carbon Monoxide Unitary Range (g/kN): 27.12-31.92
Carbon Monoxide Unitary Characteristic (g/kN): 32.27
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit): 27.3
NOx Take Off (g/kg fuel): 40.2
NOx Climb Out (g/kg fuel): 30.88
NOx Approach (g/kg fuel): 10.59
NOx Idle (g/kg fuel): 4.23
NOx Unitary Average (g/kN): 47.4
NOx Unitary SD (g/kN): 1.64
NOx Unitary Range (g/kN): 45.6-48.8
NOx Unitary Characteristic (g/kN): 50.21
NOx Unitaryto Standard (% of limit): 42.7
NOx Unitaryto CAEP2 (% of limit): 53.4
NOx Unitaryto CAEP4 (% of limit): 59.3
NOx Unitaryto CAEP6 (% of limit): 65.6
NOx Unitaryto CAEP8 (% of limit): 74.1
NOx LTO (g): 16834
Smoke Take Off (SN): 5.8
Smoke Climb Out (SN): 7
Smoke Approach (SN): 6.5
Smoke Idle (SN): 1.6
Smoke Max (SN): 10.3
Smoke Sigma (SN): 2.2
Smoke Range (SN): 7.8-12.1
Smoke Characteristic (SN): 11.3
Smoke Characteristicto Regulatory (% of limit): 67.4
Fuel Flow Take Off (kg/s): 2.601
Fuel Flow Climbout (kg/s): 2.129
Fuel Flow Approach (kg/s): 0.755
Fuel Flow Idle (kg/s): 0.28
Fuel LTO (kg): 1008
Fuel Venting Compliant: Yes
Carbon Monoxide LTO (g): 10597
Emissions Data Status: C/R
Emissions Data Superseded: Yes
Emissions Superseded By: 01P18RR122
NOx Compliance Demonstration: 2.3.2 e)