Trent 972-84

Turbofan · Rolls-Royce

Reaction Turbines

Maximum Takeoff Thrust

345.9 kN

Bypass Ratio

8.41

Overall Pressure Ratio

38.68

Fuel Flow Take Off

2.672 kg/s

NOx Unitaryto CAEP8

80.3 % 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 8.41	Overall Pressure Ratio 38.68	Afterburner No

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Similar reaction turbines

Name	Aircraft Engine Manufacturer	Maximum Takeoff Thrust (kN)	Bypass Ratio	Overall Pressure Ratio
Trent 972-84	Rolls-Royce	345.9	8.41	38.68	Compare
Trent 972E-84	Rolls-Royce	345.9	8.41	38.68	Compare
GEnx-1B75/P2	GE Aircraft Engines	345.2	8.62	47	Compare
GEnx-1B76/P2	GE Aircraft Engines	349.2	8.59	47.5	Compare
GEnx-1B76A/P2	GE Aircraft Engines	349.2	8.59	47.5	Compare
Trent 970B-84	Rolls-Royce	352.9	8.38	39.35	Compare

All data (64 fields)

Name: Trent 972-84
EASA ID: 18RR083
Aircraft Engine Manufacturer: Rolls-Royce
Aircraft Engine Type: Turbofan
Geared Fan: No
Combustion Chamber: Phase5 Tiled
Afterburner: No
Streams: 2
Bypass Ratio: 8.41
Overall Pressure Ratio: 38.68
Maximum Takeoff Thrust (kN): 345.9
Hydrocarbon Take Off (g/kg fuel): 0.01
Hydrocarbon Climb Out (g/kg fuel): 0.11
Hydrocarbon Approach (g/kg fuel): 0.07
Hydrocarbon Idle (g/kg fuel): 0.04
Hydrocarbon Unitary Average (g/kN): 0.17
Hydrocarbon Unitary Sigma (g/kN): 0.05
Hydrocarbon Unitary Range (g/kN): 0.13-0.24
Hydrocarbon Unitary Characteristic (g/kN): 0.2
Hydrocarbon Unitary Characteristicto Regulatory (% of limit): 1
Hydrocarbon LTO (g): 60
Carbon Monoxide Take Off (g/kg fuel): 0.32
Carbon Monoxide Climb Out (g/kg fuel): 0.31
Carbon Monoxide Approach (g/kg fuel): 1.1
Carbon Monoxide Idle (g/kg fuel): 13
Carbon Monoxide Unitary Average (g/kN): 16.06
Carbon Monoxide Unitary SD (g/kN): 1.69
Carbon Monoxide Unitary Range (g/kN): 14.64-17.93
Carbon Monoxide Unitary Characteristic (g/kN): 17.37
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit): 14.7
NOx Take Off (g/kg fuel): 39.78
NOx Climb Out (g/kg fuel): 30.36
NOx Approach (g/kg fuel): 12.23
NOx Idle (g/kg fuel): 5.51
NOx Unitary Average (g/kN): 51.16
NOx Unitary SD (g/kN): 1.92
NOx Unitary Range (g/kN): 49.39-53.2
NOx Unitary Characteristic (g/kN): 54.19
NOx Unitaryto Standard (% of limit): 46.2
NOx Unitaryto CAEP2 (% of limit): 57.7
NOx Unitaryto CAEP4 (% of limit): 64.2
NOx Unitaryto CAEP6 (% of limit): 71
NOx Unitaryto CAEP8 (% of limit): 80.3
NOx LTO (g): 17699
Smoke Take Off (SN): 6.1
Smoke Climb Out (SN): 6.4
Smoke Approach (SN): 3.2
Smoke Idle (SN): 0.6
Smoke Max (SN): 7.1
Smoke Sigma (SN): 2.7
Smoke Range (SN): 5.2-9
Smoke Characteristic (SN): 8.3
Smoke Characteristicto Regulatory (% of limit): 49.4
Fuel Flow Take Off (kg/s): 2.672
Fuel Flow Climbout (kg/s): 2.21
Fuel Flow Approach (kg/s): 0.735
Fuel Flow Idle (kg/s): 0.258
Fuel LTO (kg): 983
Fuel Venting Compliant: Yes
Carbon Monoxide LTO (g): 5557
Emissions Data Status: C
Emissions Data Superseded: Yes
Emissions Superseded By: 01P18RR104
NOx Compliance Demonstration: 2.3.2 e)