| LEAP-1B25 ✕ | LEAP-1A26CJ ✕ | |
|---|---|---|
| Family | LEAP-1B | LEAP-1A |
| EASA ID | 08P28CM146 | 08P28CM154 |
| 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 | 8.3584 | 10.706 |
| Overall Pressure Ratio | 39.0582 | 33.1765 |
| Maximum Takeoff Thrust (kN) | 119.15 | 120.6357 |
| Hydrocarbon Take Off (g/kg fuel) | 0.0275 | 0.0274 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.0146 | 0.0188 |
| Hydrocarbon Approach (g/kg fuel) | 0.0298 | 0.0555 |
| Hydrocarbon Idle (g/kg fuel) | 0.4483 | 0.7837 |
| Hydrocarbon Unitary Average (g/kN) | 0.6012 | 0.9392 |
| Hydrocarbon Unitary Sigma (g/kN) | 0.1104 | 0.246 |
| Hydrocarbon Unitary Range (g/kN) | 0.48-0.79 | 0.57-1.24 |
| Hydrocarbon Unitary Characteristic (g/kN) | 0.7013 | 1.0717 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 3.5781 | 5.4677 |
| Hydrocarbon LTO (g) | 71.6287 | 113.3032 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.1655 | 0.0143 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.1379 | 0.1084 |
| Carbon Monoxide Approach (g/kg fuel) | 1.3444 | 2.8107 |
| Carbon Monoxide Idle (g/kg fuel) | 15.0106 | 23.8311 |
| Carbon Monoxide Unitary Average (g/kN) | 19.755 | 28.5014 |
| Carbon Monoxide Unitary SD (g/kN) | 0.7425 | 1.597 |
| Carbon Monoxide Unitary Range (g/kN) | 18.94-21.02 | 27-31.09 |
| Carbon Monoxide Unitary Characteristic (g/kN) | 21.366 | 30.4926 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 18.1068 | 25.8412 |
| NOx Take Off (g/kg fuel) | 48.2173 | 34.2818 |
| NOx Climb Out (g/kg fuel) | 19.9921 | 19.2339 |
| NOx Approach (g/kg fuel) | 10.3454 | 8.5622 |
| NOx Idle (g/kg fuel) | 4.7604 | 4.3128 |
| NOx Unitary Average (g/kN) | 44.994 | 34.4206 |
| NOx Unitary SD (g/kN) | 3.5445 | 2.3144 |
| NOx Unitary Range (g/kN) | 39.8-49.11 | 31.3-37.75 |
| NOx Unitary Characteristic (g/kN) | 47.658 | 36.1713 |
| NOx Unitaryto Standard (% of limit) | 40.3483 | 34.0106 |
| NOx Unitaryto CAEP2 (% of limit) | 50.4354 | 42.5132 |
| NOx Unitaryto CAEP4 (% of limit) | 55.9916 | 49.3112 |
| NOx Unitaryto CAEP6 (% of limit) | 61.8321 | 55.3814 |
| NOx Unitaryto CAEP8 (% of limit) | 69.8425 | 64.0505 |
| NOx LTO (g) | 5361.032 | 4152.355 |
| Smoke Take Off (SN) | 0.5915 | 0.7037 |
| Smoke Climb Out (SN) | 0.538 | 0.6738 |
| Smoke Approach (SN) | 0.7762 | 0.5964 |
| Smoke Idle (SN) | 0.5865 | 0.5767 |
| Smoke Max (SN) | 2.1594 | 1.203 |
| Smoke Sigma (SN) | 1.3952 | 0.3443 |
| Smoke Range (SN) | 0.32-3.81 | 0.81-1.41 |
| Smoke Characteristic (SN) | 2.3754 | 1.5485 |
| Smoke Characteristicto Regulatory (% of limit) | 10.5287 | 6.8871 |
| Fuel Flow Take Off (kg/s) | 0.9521 | 0.8648 |
| Fuel Flow Climbout (kg/s) | 0.7802 | 0.7139 |
| Fuel Flow Approach (kg/s) | 0.2664 | 0.2455 |
| Fuel Flow Idle (kg/s) | 0.096 | 0.0877 |
| Fuel LTO (kg) | 356.6018 | 326.3452 |
| Fuel Venting Compliant | Yes | Yes |
| Carbon Monoxide LTO (g) | 2353.81 | 3438.289 |
| Compressor Description | 1 fan, 3-stage LP, 10-stage HP | 1 fan, 3-stage LP, 10-stage HP |
| Emissions Data Status | C | C |
| NOx Compliance Demonstration | 2.3.2 e) | 2.3.2 e) |
| nvPME Imass Approach (mg/kg) | 1.7089 | 1.5252 |
| nvPME Imass Climb Out (mg/kg) | 0.0941 | 0.6526 |
| nvPME Imass Idle (mg/kg) | 0.6964 | 1.5053 |
| nvPME Imass Max (mg/kg) | 19.572 | 12.3631 |
| nvPME Imass Take Off (mg/kg) | 0.0928 | 0.6288 |
| nvPME Inum Approach (#/kg) | 77595560000000 | 52017000000000 |
| nvPME Inum Climb Out (#/kg) | 13866180000 | 12299690000 |
| nvPME Inum Idle (#/kg) | 63000300000000 | 26768590000000 |
| nvPME Inum Max (#/kg) | 379726600000000 | 444949800000000 |
| nvPME Inum Take Off (#/kg) | 11912060000 | 13497780000 |
| nvPMLTO Mass (mg) | 226.9019 | 380.224 |
| nvPMLTO Mass Per Thrust (mg/kN) | 2.15 | 3.4978 |
| nvPMLTO Mass To CAEP11 (% of limit) | 0.5031 | 0.8387 |
| nvPMLTO Number (#) | 14393310000000000 | 6730226000000000 |
| nvPMLTO Number Per Thrust (#/kN) | 136382900000000 | 61912850000000 |
| nvPMLTO Number To CAEP11 (% of limit) | 2.5863 | 1.2016 |
| nvPM Mass Concentration Characteristic (mg/m³) | 448.2236 | 165.986 |
| nvPM Mass Concentration Max (mg/m³) | 407.4801 | 152.9229 |
| nvPM Mass Concentration To CAEP10 (% of limit) | 7.3938 | 2.7549 |
| Turbine Description | 2-stage HP, 5-stage LP | 2-stage HP, 7-stage LP |