| CFM56-7B18 ✕ | CFM56-7B20/2 ✕ | CFM56-7B22/2 ✕ | |
|---|---|---|---|
| Family | CFM56-7B | CFM56-7B | CFM56-7B |
| EASA ID | 3CM029 | 4CM039 | 4CM040 |
| Aircraft Engine Manufacturer | CFM International | CFM International | CFM International |
| Aircraft Engine Type | Turbofan | Turbofan | Turbofan |
| Comment | Boeing 737 Next Generation | Boeing 737 Next Generation | Boeing 737 Next Generation |
| Dry Weight (kg) | 2366 | 2366 | 2366 |
| Diameter (mm) | 1549 | 1549 | 1549 |
| Max Rotating Diameter (mm) | 1549 | 1549 | 1549 |
| Length (mm) | 2507 | 2507 | 2507 |
| Wikipedia Article (URL) | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 | en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel | Jet A | Jet A | Jet A |
| Fan Blades | 24 | 24 | 24 |
| Geared Fan | No | No | No |
| Low-Pressure Compressor Stages | 3 | 3 | 3 |
| High-Pressure Compressor Stages | 9 | 9 | 9 |
| High Pressure Compressor Stages | 1 | 1 | 1 |
| Low-Pressure Turbine Stages | 4 | 4 | 4 |
| Afterburner | No | No | No |
| Streams | 2 | 2 | 2 |
| Bypass Ratio | 5.5 | 5.4 | 5.3 |
| Overall Pressure Ratio | 21.59 | 22.77 | 24.61 |
| Maximum Takeoff Thrust (kN) | 86.74 | 91.63 | 100.97 |
| Hydrocarbon Take Off (g/kg fuel) | 0.1 | 0.07 | 0.06 |
| Hydrocarbon Climb Out (g/kg fuel) | 0.1 | 0.23 | 0.1 |
| Hydrocarbon Approach (g/kg fuel) | 0.1 | 0.36 | 6.06 |
| Hydrocarbon Idle (g/kg fuel) | 3.5 | 8.11 | 7.26 |
| Hydrocarbon Unitary Average (g/kN) | 6.32 | 14.61 | 16.31 |
| Hydrocarbon Unitary Range (g/kN) | 13.8-15.9 | 14.6-18.2 | |
| Hydrocarbon Unitary Characteristic (g/kN) | 9.7 | 17 | 19 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) | 49.5 | 86.9 | 97.1 |
| Hydrocarbon LTO (g) | 549 | 1340 | 1643 |
| Carbon Monoxide Take Off (g/kg fuel) | 0.6 | 4.26 | 2.18 |
| Carbon Monoxide Climb Out (g/kg fuel) | 0.4 | 11.38 | 6.58 |
| Carbon Monoxide Approach (g/kg fuel) | 3.6 | 11.37 | 30.87 |
| Carbon Monoxide Idle (g/kg fuel) | 28.3 | 49.71 | 45.35 |
| Carbon Monoxide Unitary Average (g/kN) | 52.45 | 108.63 | 104.18 |
| Carbon Monoxide Unitary Range (g/kN) | 102.1-114.9 | 96.9-111.7 | |
| Carbon Monoxide Unitary Characteristic (g/kN) | 64.4 | 117.5 | 112.7 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) | 54.6 | 99.6 | 95.5 |
| NOx Take Off (g/kg fuel) | 19.2 | 13.25 | 15.08 |
| NOx Climb Out (g/kg fuel) | 16.6 | 10.81 | 12.16 |
| NOx Approach (g/kg fuel) | 9.1 | 9.39 | 6.37 |
| NOx Idle (g/kg fuel) | 4.3 | 3.75 | 3.94 |
| NOx Unitary Average (g/kN) | 39.99 | 30.58 | 30.63 |
| NOx Unitary Range (g/kN) | 30.4-30.8 | 30.4-30.9 | |
| NOx Unitary Characteristic (g/kN) | 46.4 | 32.4 | 32.4 |
| NOx Unitaryto Standard (% of limit) | 55.8 | 37.9 | 36.4 |
| NOx Unitaryto CAEP2 (% of limit) | 69.7 | 47.3 | 45.4 |
| NOx Unitaryto CAEP4 (% of limit) | 85.8 | 58.4 | 55.6 |
| NOx Unitaryto CAEP6 (% of limit) | 97 | 66.4 | 63.1 |
| NOx Unitaryto CAEP8 (% of limit) | 118.4 | 81.1 | 76.2 |
| NOx LTO (g) | 3472 | 2802 | 3091 |
| Smoke Take Off (SN) | 10.7 | 0.7 | 0.7 |
| Smoke Climb Out (SN) | 6.4 | 0.7 | 0.7 |
| Smoke Approach (SN) | 0 | 1.5 | 0.7 |
| Smoke Idle (SN) | 0 | 0.7 | 0.7 |
| Smoke Max (SN) | 10.7 | 1.52 | 0.69 |
| Smoke Range (SN) | 0-3.4 | 0.1-1.8 | |
| Smoke Characteristic (SN) | 13.8 | 1.7 | 0.8 |
| Smoke Characteristicto Regulatory (% of limit) | 56.1 | 6.9 | 3.2 |
| Fuel Flow Take Off (kg/s) | 0.854 | 0.903 | 1.008 |
| Fuel Flow Climbout (kg/s) | 0.714 | 0.754 | 0.837 |
| Fuel Flow Approach (kg/s) | 0.26 | 0.278 | 0.303 |
| Fuel Flow Idle (kg/s) | 0.097 | 0.102 | 0.105 |
| Fuel LTO (kg) | 344 | 363 | 389 |
| Fuel Venting Compliant | No | No | No |
| Carbon Monoxide LTO (g) | 4566 | 9963 | 10492 |
| Compressor Description | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP | 1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status | C | C | C |
| Engine Status | Out of production | Out of production | Out of production |
| Turbine Description | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP | 1-stage HP, 4-stage LP |