| Family |
LEAP-1B |
CFM56-5B |
| EASA ID |
20CM100 |
2CM012 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Boeing 737 MAX |
Airbus A318, A319, A320, A321 |
| Dry Weight (kg) |
2780 |
2381 |
| Diameter (mm) |
1763 |
1735 |
| Max Rotating Diameter (mm) |
1763 |
1735 |
| Length (mm) |
3147 |
2601 |
| Height (mm) |
2256 |
|
| Width (mm) |
2421 |
|
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/CFM_International_LEAP |
en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel |
Jet A |
Jet A |
| Fan Blades |
18 |
36 |
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
3 |
4 |
| High-Pressure Compressor Stages |
10 |
9 |
| Combustion Chamber |
TAPS II |
|
| High Pressure Compressor Stages |
2 |
1 |
| Low-Pressure Turbine Stages |
5 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
8.3 |
5.7 |
| Overall Pressure Ratio |
42 |
30.2 |
| Maximum Takeoff Thrust (kN) |
130.4 |
133.45 |
| Hydrocarbon Take Off (g/kg fuel) |
0.05 |
0.1 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.04 |
0.1 |
| Hydrocarbon Approach (g/kg fuel) |
0.05 |
0.12 |
| Hydrocarbon Idle (g/kg fuel) |
0.46 |
3.21 |
| Hydrocarbon Unitary Average (g/kN) |
0.61 |
4.6 |
| Hydrocarbon Unitary Sigma (g/kN) |
0.09 |
0.29 |
| Hydrocarbon Unitary Range (g/kN) |
0.66-0.84 |
4.28-4.86 |
| Hydrocarbon Unitary Characteristic (g/kN) |
0.94 |
7.1 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
4.8 |
36.1 |
| Hydrocarbon LTO (g) |
79 |
617 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.18 |
0.5 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.15 |
0.5 |
| Carbon Monoxide Approach (g/kg fuel) |
0.99 |
1.57 |
| Carbon Monoxide Idle (g/kg fuel) |
13.77 |
28.4 |
| Carbon Monoxide Unitary Average (g/kN) |
16.68 |
40.5 |
| Carbon Monoxide Unitary SD (g/kN) |
0.77 |
0.34 |
| Carbon Monoxide Unitary Range (g/kN) |
16.97-18.38 |
40.1-40.8 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
20.48 |
49.7 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
17.4 |
42.1 |
| NOx Take Off (g/kg fuel) |
64.36 |
35.1 |
| NOx Climb Out (g/kg fuel) |
29.59 |
27.2 |
| NOx Approach (g/kg fuel) |
11.92 |
10.8 |
| NOx Idle (g/kg fuel) |
4.68 |
4.6 |
| NOx Unitary Average (g/kN) |
60.1 |
58.4 |
| NOx Unitary SD (g/kN) |
1.38 |
0.7 |
| NOx Unitary Range (g/kN) |
56.39-59.15 |
58-59.2 |
| NOx Unitary Characteristic (g/kN) |
69.66 |
67.7 |
| NOx Unitaryto Standard (% of limit) |
56.2 |
67.4 |
| NOx Unitaryto CAEP2 (% of limit) |
70.2 |
84.3 |
| NOx Unitaryto CAEP4 (% of limit) |
76.6 |
100.4 |
| NOx Unitaryto CAEP6 (% of limit) |
84 |
114 |
| NOx Unitaryto CAEP8 (% of limit) |
94 |
134 |
| NOx LTO (g) |
7837 |
7783 |
| Smoke Take Off (SN) |
0.94 |
8.6 |
| Smoke Climb Out (SN) |
0.85 |
10.5 |
| Smoke Approach (SN) |
1.07 |
0 |
| Smoke Idle (SN) |
0.8 |
0 |
| Smoke Max (SN) |
1.16 |
10.5 |
| Smoke Sigma (SN) |
0.29 |
1.4 |
| Smoke Range (SN) |
0.34-0.9 |
8.9-11.4 |
| Smoke Characteristic (SN) |
1.49 |
13.5 |
| Smoke Characteristicto Regulatory (% of limit) |
6.8 |
61.7 |
| Fuel Flow Take Off (kg/s) |
1.075 |
1.359 |
| Fuel Flow Climbout (kg/s) |
0.873 |
1.113 |
| Fuel Flow Approach (kg/s) |
0.285 |
0.364 |
| Fuel Flow Idle (kg/s) |
0.097 |
0.117 |
| Fuel LTO (kg) |
380 |
474 |
| Fuel Venting Compliant |
Yes |
No |
| Carbon Monoxide LTO (g) |
2176 |
5423 |
| Compressor Description |
1 fan, 3-stage LP, 10-stage HP |
1 fan, 4-stage LP, 9-stage HP |
| Emissions Data Status |
C |
C |
| Emissions Data Superseded |
Yes |
|
| Emissions Superseded By |
01P20CM138 |
|
| Engine Status |
|
Out of production |
| NOx Compliance Demonstration |
2.3.2 e) |
|
| Turbine Description |
2-stage HP, 5-stage LP |
1-stage HP, 4-stage LP |