| Family |
LEAP-1B |
CFM56-5A |
| EASA ID |
20CM099 |
1CM009 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Boeing 737 MAX |
Airbus A319, A320 |
| Dry Weight (kg) |
2780 |
2266 |
| Diameter (mm) |
1763 |
1735 |
| Max Rotating Diameter (mm) |
1763 |
1735 |
| Length (mm) |
3147 |
|
| 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 |
|
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
3 |
|
| High-Pressure Compressor Stages |
10 |
|
| Combustion Chamber |
TAPS II |
|
| High Pressure Compressor Stages |
2 |
|
| Low-Pressure Turbine Stages |
5 |
|
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
8.3 |
6 |
| Overall Pressure Ratio |
40.5 |
27.9 |
| Maximum Takeoff Thrust (kN) |
124.7 |
117.88 |
| Hydrocarbon Take Off (g/kg fuel) |
0.05 |
0.2 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.04 |
0.2 |
| Hydrocarbon Approach (g/kg fuel) |
0.05 |
0.3 |
| Hydrocarbon Idle (g/kg fuel) |
0.51 |
1.3 |
| Hydrocarbon Unitary Average (g/kN) |
0.68 |
2.3 |
| Hydrocarbon Unitary Sigma (g/kN) |
0.09 |
0.5 |
| Hydrocarbon Unitary Range (g/kN) |
0.66-0.84 |
1.8-2.8 |
| Hydrocarbon Unitary Characteristic (g/kN) |
1.05 |
3.5 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
5.4 |
18.1 |
| Hydrocarbon LTO (g) |
85 |
268 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.17 |
0.9 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.14 |
0.9 |
| Carbon Monoxide Approach (g/kg fuel) |
1.11 |
2.4 |
| Carbon Monoxide Idle (g/kg fuel) |
14.4 |
16.2 |
| Carbon Monoxide Unitary Average (g/kN) |
17.81 |
25.1 |
| Carbon Monoxide Unitary SD (g/kN) |
0.77 |
0.6 |
| Carbon Monoxide Unitary Range (g/kN) |
16.97-18.38 |
24.2-25.5 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
21.86 |
30.8 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
18.5 |
26.1 |
| NOx Take Off (g/kg fuel) |
55.26 |
26.4 |
| NOx Climb Out (g/kg fuel) |
23.26 |
21.1 |
| NOx Approach (g/kg fuel) |
11.59 |
8.3 |
| NOx Idle (g/kg fuel) |
4.59 |
4.1 |
| NOx Unitary Average (g/kN) |
50.72 |
43.4 |
| NOx Unitary SD (g/kN) |
1.38 |
0.7 |
| NOx Unitary Range (g/kN) |
56.39-59.15 |
42.7-44.2 |
| NOx Unitary Characteristic (g/kN) |
58.79 |
50.3 |
| NOx Unitaryto Standard (% of limit) |
48.6 |
52.5 |
| NOx Unitaryto CAEP2 (% of limit) |
60.7 |
65.6 |
| NOx Unitaryto CAEP4 (% of limit) |
66.8 |
79 |
| NOx Unitaryto CAEP6 (% of limit) |
73.5 |
89.8 |
| NOx Unitaryto CAEP8 (% of limit) |
82.7 |
106.7 |
| NOx LTO (g) |
6326 |
5110 |
| Smoke Take Off (SN) |
0.94 |
16.8 |
| Smoke Climb Out (SN) |
0.85 |
14.6 |
| Smoke Approach (SN) |
1.07 |
4.8 |
| Smoke Idle (SN) |
0.8 |
2.7 |
| Smoke Max (SN) |
1.16 |
16.8 |
| Smoke Sigma (SN) |
0.29 |
2 |
| Smoke Range (SN) |
0.34-0.9 |
14.6-18.8 |
| Smoke Characteristic (SN) |
1.49 |
21.6 |
| Smoke Characteristicto Regulatory (% of limit) |
6.7 |
95.6 |
| Fuel Flow Take Off (kg/s) |
1.014 |
1.131 |
| Fuel Flow Climbout (kg/s) |
0.826 |
0.925 |
| Fuel Flow Approach (kg/s) |
0.273 |
0.307 |
| Fuel Flow Idle (kg/s) |
0.095 |
0.1044 |
| Fuel LTO (kg) |
365 |
406 |
| Fuel Venting Compliant |
Yes |
No |
| Carbon Monoxide LTO (g) |
2221 |
2968 |
| Compressor Description |
1 fan, 3-stage LP, 10-stage HP |
|
| Emissions Data Status |
C |
C |
| Emissions Data Superseded |
Yes |
|
| Emissions Superseded By |
01P20CM137 |
|
| Engine Status |
|
Out of production |
| NOx Compliance Demonstration |
2.3.2 e) |
|
| Turbine Description |
2-stage HP, 5-stage LP |
|