| LEAP-1B28BBJ1 ✕ | LEAP-1A29CJ ✕ | |
|---|---|---|
| Family | LEAP-1B | LEAP-1A |
| EASA ID | 20CM100 | 08P28CM152 |
| Aircraft Engine Manufacturer | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan |
| Comment | Boeing 737 MAX | Airbus A320neo family |
| Dry Weight (kg) | 2780 | |
| Full Weight (kg) | 3153 | |
| Diameter (mm) | 1763 | 1981 |
| Max Rotating Diameter (mm) | 1763 | 1981 |
| Length (mm) | 3147 | 3328 |
| Height (mm) | 2256 | 2362 |
| Width (mm) | 2421 | 2543 |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/CFM_International_LEAP | en.wikipedia.org/wiki/CFM_International_LEAP |
| Fuel | Jet A | Jet A |
| Fan Blades | 18 | 18 |
| Geared Fan | No | No |
| Low-Pressure Compressor Stages | 3 | 3 |
| High-Pressure Compressor Stages | 10 | 10 |
| Combustion Chamber | TAPS II | TAPS II |
| High Pressure Compressor Stages | 2 | 2 |
| Low-Pressure Turbine Stages | 5 | 7 |
| Afterburner | No | No |
| Streams | 2 | 2 |
| Bypass Ratio | 8.3 | 10.5579 |
| Overall Pressure Ratio | 42 | 35.4206 |
| Maximum Takeoff Thrust (kN) | 130.4 | 130.2891 |
| Hydrocarbon Take Off (g/kg fuel) | 0.05 | 0.0315 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.04 | 0.0226 |
| Hydrocarbon Approach (g/kg fuel) | 0.05 | 0.055 |
| Hydrocarbon Idle (g/kg fuel) | 0.46 | 0.693 |
| Hydrocarbon Unitary Average (g/kN) | 0.61 | 0.8046 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.09 | 0.1917 |
| Hydrocarbon Unitary Range (g/kN) | 0.66-0.84 | 0.52-1.05 |
| Hydrocarbon Unitary Characteristic (g/kN) | 0.94 | 0.9181 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 4.8 | 4.6843 |
| Hydrocarbon LTO (g) | 79 | 104.8358 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.18 | 0.0147 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.15 | 0.0227 |
| Carbon Monoxide Approach (g/kg fuel) | 0.99 | 2.3515 |
| Carbon Monoxide Idle (g/kg fuel) | 13.77 | 22.6432 |
| Carbon Monoxide Unitary Average (g/kN) | 16.68 | 25.6825 |
| Carbon Monoxide Unitary SD (g/kN) | 0.77 | 1.24 |
| Carbon Monoxide Unitary Range (g/kN) | 16.97-18.38 | 24.38-27.61 |
| Carbon Monoxide Unitary Characteristic (g/kN) | 20.48 | 27.4767 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 17.4 | 23.2854 |
| NOx Take Off (g/kg fuel) | 64.36 | 47.3556 |
| NOx Climb Out (g/kg fuel) | 29.59 | 26.2458 |
| NOx Approach (g/kg fuel) | 11.92 | 9.0618 |
| NOx Idle (g/kg fuel) | 4.68 | 4.4271 |
| NOx Unitary Average (g/kN) | 60.1 | 44.4389 |
| NOx Unitary SD (g/kN) | 1.38 | 1.3994 |
| NOx Unitary Range (g/kN) | 56.39-59.15 | 42.49-46.18 |
| NOx Unitary Characteristic (g/kN) | 69.66 | 46.6992 |
| NOx Unitaryto Standard (% of limit) | 56.2 | 42.1316 |
| NOx Unitaryto CAEP2 (% of limit) | 70.2 | 52.6645 |
| NOx Unitaryto CAEP4 (% of limit) | 76.6 | 59.9929 |
| NOx Unitaryto CAEP6 (% of limit) | 84 | 66.9031 |
| NOx Unitaryto CAEP8 (% of limit) | 94 | 76.6048 |
| NOx LTO (g) | 7837 | 5789.907 |
| Smoke Take Off (SN) | 0.94 | 0.7384 |
| Smoke Climb Out (SN) | 0.85 | 0.679 |
| Smoke Approach (SN) | 1.07 | 0.5715 |
| Smoke Idle (SN) | 0.8 | 0.6066 |
| Smoke Max (SN) | 1.16 | 1.203 |
| Smoke Sigma (SN) | 0.29 | 0.3443 |
| Smoke Range (SN) | 0.34-0.9 | 0.81-1.41 |
| Smoke Characteristic (SN) | 1.49 | 1.5485 |
| Smoke Characteristicto Regulatory (% of limit) | 6.8 | 7.0339 |
| Fuel Flow Take Off (kg/s) | 1.075 | 0.9512 |
| Fuel Flow Climbout (kg/s) | 0.873 | 0.7798 |
| Fuel Flow Approach (kg/s) | 0.285 | 0.2629 |
| Fuel Flow Idle (kg/s) | 0.097 | 0.0904 |
| Fuel LTO (kg) | 380 | 347.0758 |
| Fuel Venting Compliant | Yes | Yes |
| Carbon Monoxide LTO (g) | 2176 | 3346.149 |
| Compressor Description | 1 fan, 3-stage LP, 10-stage HP | 1 fan, 3-stage LP, 10-stage HP |
| Emissions Data Status | C | C |
| Emissions Data Superseded | Yes | |
| Emissions Superseded By | 01P20CM138 | |
| NOx Compliance Demonstration | 2.3.2 e) | 2.3.2 e) |
| nvPME Imass Approach (mg/kg) | 2.1191 | |
| nvPME Imass Climb Out (mg/kg) | 0.6659 | |
| nvPME Imass Idle (mg/kg) | 1.4624 | |
| nvPME Imass Max (mg/kg) | 12.5603 | |
| nvPME Imass Take Off (mg/kg) | 0.6375 | |
| nvPME Inum Approach (#/kg) | 80408650000000 | |
| nvPME Inum Climb Out (#/kg) | 12462720000 | |
| nvPME Inum Idle (#/kg) | 22041070000000 | |
| nvPME Inum Max (#/kg) | 451455400000000 | |
| nvPME Inum Take Off (#/kg) | 14881760000 | |
| nvPMLTO Mass (mg) | 434.0469 | |
| nvPMLTO Mass Per Thrust (mg/kN) | 3.6971 | |
| nvPMLTO Mass To CAEP11 (% of limit) | 1.0555 | |
| nvPMLTO Number (#) | 8185064000000000 | |
| nvPMLTO Number Per Thrust (#/kN) | 69717390000000 | |
| nvPMLTO Number To CAEP11 (% of limit) | 1.5944 | |
| nvPM Mass Concentration Characteristic (mg/m³) | 165.986 | |
| nvPM Mass Concentration Max (mg/m³) | 152.9229 | |
| nvPM Mass Concentration To CAEP10 (% of limit) | 2.8601 | |
| Turbine Description | 2-stage HP, 5-stage LP | 2-stage HP, 7-stage LP |