| LEAP-1B21 ✕ | LEAP-1B23 ✕ | LEAP-1B28 ✕ | |
|---|---|---|---|
| Family | LEAP-1B | LEAP-1B | LEAP-1B |
| EASA ID | 20CM094 | 20CM095 | 18CM084 |
| Aircraft Engine Manufacturer | CFM International | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan | Turbofan |
| Comment | Boeing 737 MAX | Boeing 737 MAX | Boeing 737 MAX |
| Dry Weight (kg) | 2780 | 2780 | 2780 |
| Diameter (mm) | 1763 | 1763 | 1763 |
| Max Rotating Diameter (mm) | 1763 | 1763 | 1763 |
| Length (mm) | 3147 | 3147 | 3147 |
| Height (mm) | 2256 | 2256 | 2256 |
| Width (mm) | 2421 | 2421 | 2421 |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/CFM_International_LEAP | en.wikipedia.org/wiki/CFM_International_LEAP | en.wikipedia.org/wiki/CFM_International_LEAP |
| Fuel | Jet A | Jet A | Jet A |
| Fan Blades | 18 | 18 | 18 |
| Geared Fan | No | No | No |
| Low-Pressure Compressor Stages | 3 | 3 | 3 |
| High-Pressure Compressor Stages | 10 | 10 | 10 |
| Combustion Chamber | TAPS II | TAPS II | TAPS II |
| High Pressure Compressor Stages | 2 | 2 | 2 |
| Low-Pressure Turbine Stages | 5 | 5 | 5 |
| Afterburner | No | No | No |
| Streams | 2 | 2 | 2 |
| Bypass Ratio | 8.5 | 8.5 | 8.6 |
| Overall Pressure Ratio | 36.8 | 37.9 | 41.5 |
| Maximum Takeoff Thrust (kN) | 111.3 | 115.2 | 130.4 |
| Hydrocarbon Take Off (g/kg fuel) | 0.04 | 0.04 | 0.05 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.04 | 0.04 | 0.04 |
| Hydrocarbon Approach (g/kg fuel) | 0.05 | 0.05 | 0.05 |
| Hydrocarbon Idle (g/kg fuel) | 0.71 | 0.64 | 0.57 |
| Hydrocarbon Unitary Average (g/kN) | 0.96 | 0.86 | 0.74 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.09 | 0.09 | 0.09 |
| Hydrocarbon Unitary Range (g/kN) | 0.66-0.84 | 0.66-0.84 | 0.66-0.84 |
| Hydrocarbon Unitary Characteristic (g/kN) | 1.47 | 1.32 | 1.15 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 7.5 | 6.8 | 5.9 |
| Hydrocarbon LTO (g) | 106 | 99 | 97 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.15 | 0.16 | 0.18 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.16 | 0.14 | 0.14 |
| Carbon Monoxide Approach (g/kg fuel) | 1.49 | 1.36 | 1.2 |
| Carbon Monoxide Idle (g/kg fuel) | 16.19 | 15.61 | 14.62 |
| Carbon Monoxide Unitary Average (g/kN) | 21.19 | 20.06 | 17.94 |
| Carbon Monoxide Unitary SD (g/kN) | 0.77 | 0.77 | 0.77 |
| Carbon Monoxide Unitary Range (g/kN) | 16.97-18.38 | 16.97-18.38 | 16.97-18.38 |
| Carbon Monoxide Unitary Characteristic (g/kN) | 26.01 | 24.62 | 21.93 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 22 | 20.9 | 18.6 |
| NOx Take Off (g/kg fuel) | 30.39 | 38.19 | 60.67 |
| NOx Climb Out (g/kg fuel) | 17.53 | 18.11 | 29.58 |
| NOx Approach (g/kg fuel) | 10.26 | 10.7 | 11.24 |
| NOx Idle (g/kg fuel) | 4.74 | 4.63 | 4.64 |
| NOx Unitary Average (g/kN) | 36.42 | 39.68 | 57.78 |
| NOx Unitary SD (g/kN) | 1.38 | 1.38 | 1.38 |
| NOx Unitary Range (g/kN) | 56.39-59.15 | 56.39-59.15 | 56.39-59.15 |
| NOx Unitary Characteristic (g/kN) | 42.22 | 46 | 66.96 |
| NOx Unitaryto Standard (% of limit) | 37.2 | 39.7 | 54.4 |
| NOx Unitaryto CAEP2 (% of limit) | 46.4 | 49.6 | 68 |
| NOx Unitaryto CAEP4 (% of limit) | 52.4 | 55.5 | 74.4 |
| NOx Unitaryto CAEP6 (% of limit) | 58.2 | 61.5 | 81.7 |
| NOx Unitaryto CAEP8 (% of limit) | 66.2 | 69.7 | 91.6 |
| NOx LTO (g) | 4053 | 4573 | 7534 |
| Smoke Take Off (SN) | 0.94 | 0.94 | 0.94 |
| Smoke Climb Out (SN) | 0.85 | 0.85 | 0.85 |
| Smoke Approach (SN) | 1.07 | 1.07 | 1.07 |
| Smoke Idle (SN) | 0.8 | 0.8 | 0.8 |
| Smoke Max (SN) | 1.16 | 1.16 | 1.16 |
| Smoke Sigma (SN) | 0.29 | 0.29 | 0.29 |
| Smoke Range (SN) | 0.34-0.9 | 0.34-0.9 | 0.34-0.9 |
| Smoke Characteristic (SN) | 1.49 | 1.49 | 1.49 |
| Smoke Characteristicto Regulatory (% of limit) | 6.5 | 6.6 | 6.8 |
| Fuel Flow Take Off (kg/s) | 0.877 | 0.916 | 1.061 |
| Fuel Flow Climbout (kg/s) | 0.722 | 0.752 | 0.864 |
| Fuel Flow Approach (kg/s) | 0.245 | 0.253 | 0.277 |
| Fuel Flow Idle (kg/s) | 0.089 | 0.091 | 0.098 |
| Fuel LTO (kg) | 330 | 340 | 378 |
| Fuel Venting Compliant | Yes | Yes | Yes |
| Carbon Monoxide LTO (g) | 2358 | 2312 | 2339 |
| Compressor Description | 1 fan, 3-stage LP, 10-stage HP | 1 fan, 3-stage LP, 10-stage HP | 1 fan, 3-stage LP, 10-stage HP |
| Emissions Data Status | C | C | C |
| Emissions Data Superseded | Yes | Yes | Yes |
| Emissions Superseded By | 01P20CM133 | 01P20CM134 | 20CM101 |
| NOx Compliance Demonstration | 2.3.2 e) | 2.3.2 e) | 2.3.2 e) |
| Turbine Description | 2-stage HP, 5-stage LP | 2-stage HP, 5-stage LP | 2-stage HP, 5-stage LP |