| Family |
LEAP-1B |
LEAP-1C |
| EASA ID |
20CM099 |
08P28CM150 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Boeing 737 MAX |
COMAC C919 |
| Dry Weight (kg) |
2780 |
|
| Full Weight (kg) |
|
3935 |
| Diameter (mm) |
1763 |
1956 |
| Max Rotating Diameter (mm) |
1763 |
1956 |
| Length (mm) |
3147 |
4505 |
| Height (mm) |
2256 |
2714 |
| Width (mm) |
2421 |
2659 |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/CFM_International_LEAP |
en.wikipedia.org/wiki/CFM_International_LEAP |
| Fuel |
Jet A |
JET-A1 |
| Fan Blades |
18 |
18 |
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
3 |
|
| High-Pressure Compressor Stages |
10 |
|
| Combustion Chamber |
TAPS II |
TAPS II |
| High Pressure Compressor Stages |
2 |
|
| Low-Pressure Turbine Stages |
5 |
|
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
8.3 |
10.5594 |
| Overall Pressure Ratio |
40.5 |
35.4641 |
| Maximum Takeoff Thrust (kN) |
124.7 |
129.9763 |
| Hydrocarbon Take Off (g/kg fuel) |
0.05 |
0.0302 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.04 |
0.0216 |
| Hydrocarbon Approach (g/kg fuel) |
0.05 |
0.0538 |
| Hydrocarbon Idle (g/kg fuel) |
0.51 |
0.7118 |
| Hydrocarbon Unitary Average (g/kN) |
0.68 |
0.8473 |
| Hydrocarbon Unitary Sigma (g/kN) |
0.09 |
0.2 |
| Hydrocarbon Unitary Range (g/kN) |
0.66-0.84 |
0.5-1.1 |
| Hydrocarbon Unitary Characteristic (g/kN) |
1.05 |
0.9667 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
5.4 |
4.9324 |
| Hydrocarbon LTO (g) |
85 |
110.1235 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.17 |
0.015 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.14 |
0.0272 |
| Carbon Monoxide Approach (g/kg fuel) |
1.11 |
2.3921 |
| Carbon Monoxide Idle (g/kg fuel) |
14.4 |
22.9132 |
| Carbon Monoxide Unitary Average (g/kN) |
17.81 |
26.7754 |
| Carbon Monoxide Unitary SD (g/kN) |
0.77 |
1.3 |
| Carbon Monoxide Unitary Range (g/kN) |
16.97-18.38 |
25.4-28.9 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
21.86 |
28.646 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
18.5 |
24.2763 |
| NOx Take Off (g/kg fuel) |
55.26 |
49.7393 |
| NOx Climb Out (g/kg fuel) |
23.26 |
27.6964 |
| NOx Approach (g/kg fuel) |
11.59 |
9.007 |
| NOx Idle (g/kg fuel) |
4.59 |
4.4009 |
| NOx Unitary Average (g/kN) |
50.72 |
46.3293 |
| NOx Unitary SD (g/kN) |
1.38 |
2.1 |
| NOx Unitary Range (g/kN) |
56.39-59.15 |
43.4-49.2 |
| NOx Unitary Characteristic (g/kN) |
58.79 |
48.6857 |
| NOx Unitaryto Standard (% of limit) |
48.6 |
43.9 |
| NOx Unitaryto CAEP2 (% of limit) |
60.7 |
54.9 |
| NOx Unitaryto CAEP4 (% of limit) |
66.8 |
62.5 |
| NOx Unitaryto CAEP6 (% of limit) |
73.5 |
69.7 |
| NOx Unitaryto CAEP8 (% of limit) |
82.7 |
79.7 |
| NOx LTO (g) |
6326 |
6021.709 |
| Smoke Take Off (SN) |
0.94 |
0.7381 |
| Smoke Climb Out (SN) |
0.85 |
0.679 |
| Smoke Approach (SN) |
1.07 |
0.5723 |
| Smoke Idle (SN) |
0.8 |
0.6056 |
| Smoke Max (SN) |
1.16 |
1.203 |
| Smoke Sigma (SN) |
0.29 |
0.3 |
| Smoke Range (SN) |
0.34-0.9 |
0.8-1.4 |
| Smoke Characteristic (SN) |
1.49 |
0.9501 |
| Smoke Characteristicto Regulatory (% of limit) |
6.7 |
4.3126 |
| Fuel Flow Take Off (kg/s) |
1.014 |
0.9469 |
| Fuel Flow Climbout (kg/s) |
0.826 |
0.7763 |
| Fuel Flow Approach (kg/s) |
0.273 |
0.2622 |
| Fuel Flow Idle (kg/s) |
0.095 |
0.0931 |
| Fuel LTO (kg) |
365 |
350.3275 |
| Fuel Venting Compliant |
Yes |
Yes |
| Carbon Monoxide LTO (g) |
2221 |
3480.171 |
| Compressor Description |
1 fan, 3-stage LP, 10-stage HP |
|
| Emissions Data Status |
C |
R |
| Emissions Data Superseded |
Yes |
|
| Emissions Superseded By |
01P20CM137 |
|
| NOx Compliance Demonstration |
2.3.2 e) |
2.3.2 e) |
| nvPME Imass Approach (mg/kg) |
|
1.9598 |
| nvPME Imass Climb Out (mg/kg) |
|
0.6641 |
| nvPME Imass Idle (mg/kg) |
|
1.4703 |
| nvPME Imass Max (mg/kg) |
|
12.5543 |
| nvPME Imass Take Off (mg/kg) |
|
0.6349 |
| nvPME Inum Approach (#/kg) |
|
73179670000000 |
| nvPME Inum Climb Out (#/kg) |
|
12307560000 |
| nvPME Inum Idle (#/kg) |
|
22930490000000 |
| nvPME Inum Max (#/kg) |
|
451258300000000 |
| nvPME Inum Take Off (#/kg) |
|
14703810000 |
| nvPMLTO Mass (mg) |
|
430.0589 |
| nvPMLTO Mass Per Thrust (mg/kN) |
|
3.6719 |
| nvPMLTO Mass To CAEP11 (% of limit) |
|
1.0418 |
| nvPMLTO Number (#) |
|
7935101000000000 |
| nvPMLTO Number Per Thrust (#/kN) |
|
67750950000000 |
| nvPMLTO Number To CAEP11 (% of limit) |
|
1.5405 |
| nvPM Mass Concentration Characteristic (mg/m³) |
|
165.986 |
| nvPM Mass Concentration Max (mg/m³) |
|
152.9229 |
| nvPM Mass Concentration To CAEP10 (% of limit) |
|
2.8568 |
| Turbine Description |
2-stage HP, 5-stage LP |
|