| Family |
CFM56-5C |
LEAP-1B |
| EASA ID |
7CM046 |
08P28CM141 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Airbus A340-200/-300 |
Boeing 737 MAX |
| Dry Weight (kg) |
3990 |
2780 |
| Diameter (mm) |
1836 |
1763 |
| Max Rotating Diameter (mm) |
1836 |
1763 |
| Length (mm) |
|
3147 |
| Height (mm) |
|
2256 |
| Width (mm) |
|
2421 |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/CFM_International_CFM56 |
en.wikipedia.org/wiki/CFM_International_LEAP |
| Fuel |
Jet A |
JET A |
| Fan Blades |
|
18 |
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
|
3 |
| High-Pressure Compressor Stages |
|
10 |
| Combustion Chamber |
SAC |
TAPS II |
| High Pressure Compressor Stages |
|
2 |
| Low-Pressure Turbine Stages |
|
5 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
6.7 |
8.2397 |
| Overall Pressure Ratio |
29.2 |
42.0298 |
| Maximum Takeoff Thrust (kN) |
143.33 |
130.4085 |
| Hydrocarbon Take Off (g/kg fuel) |
0 |
0.0372 |
| Hydrocarbon Climb Out (g/kg fuel) |
0 |
0.0209 |
| Hydrocarbon Approach (g/kg fuel) |
0 |
0.0262 |
| Hydrocarbon Idle (g/kg fuel) |
5.4 |
0.3795 |
| Hydrocarbon Unitary Average (g/kN) |
6.6 |
0.5011 |
| Hydrocarbon Unitary Sigma (g/kN) |
|
0.0872 |
| Hydrocarbon Unitary Range (g/kN) |
|
0.4-0.64 |
| Hydrocarbon Unitary Characteristic (g/kN) |
10.2 |
0.5845 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
52 |
2.9823 |
| Hydrocarbon LTO (g) |
943 |
65.3427 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.8 |
0.1925 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.7 |
0.1429 |
| Carbon Monoxide Approach (g/kg fuel) |
1.9 |
1.0871 |
| Carbon Monoxide Idle (g/kg fuel) |
33.4 |
13.9018 |
| Carbon Monoxide Unitary Average (g/kN) |
42.8 |
17.4688 |
| Carbon Monoxide Unitary SD (g/kN) |
|
0.6141 |
| Carbon Monoxide Unitary Range (g/kN) |
|
16.87-18.58 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
52.6 |
18.8933 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
44.6 |
16.0113 |
| NOx Take Off (g/kg fuel) |
31.6 |
72.7476 |
| NOx Climb Out (g/kg fuel) |
25.1 |
30.7471 |
| NOx Approach (g/kg fuel) |
9.6 |
11.086 |
| NOx Idle (g/kg fuel) |
4 |
4.9304 |
| NOx Unitary Average (g/kN) |
47.8 |
63.9785 |
| NOx Unitary SD (g/kN) |
|
3.9019 |
| NOx Unitary Range (g/kN) |
|
58.39-68.29 |
| NOx Unitary Characteristic (g/kN) |
55.4 |
67.7666 |
| NOx Unitaryto Standard (% of limit) |
56.3 |
54.6242 |
| NOx Unitaryto CAEP2 (% of limit) |
70.4 |
68.2803 |
| NOx Unitaryto CAEP4 (% of limit) |
84.3 |
74.4201 |
| NOx Unitaryto CAEP6 (% of limit) |
95.8 |
81.6273 |
| NOx Unitaryto CAEP8 (% of limit) |
113.1 |
91.3548 |
| NOx LTO (g) |
6858 |
8343.335 |
| Smoke Take Off (SN) |
11.6 |
0.665 |
| Smoke Climb Out (SN) |
9 |
0.5557 |
| Smoke Approach (SN) |
1 |
0.9805 |
| Smoke Idle (SN) |
1.1 |
0.582 |
| Smoke Max (SN) |
11.6 |
2.1594 |
| Smoke Sigma (SN) |
|
1.3952 |
| Smoke Range (SN) |
|
0.32-3.81 |
| Smoke Characteristic (SN) |
14.9 |
2.3754 |
| Smoke Characteristicto Regulatory (% of limit) |
69.5 |
10.7924 |
| Fuel Flow Take Off (kg/s) |
1.316 |
1.07 |
| Fuel Flow Climbout (kg/s) |
1.085 |
0.87 |
| Fuel Flow Approach (kg/s) |
0.355 |
0.2897 |
| Fuel Flow Idle (kg/s) |
0.112 |
0.1004 |
| Fuel LTO (kg) |
458 |
385.9447 |
| Fuel Venting Compliant |
No |
Yes |
| Carbon Monoxide LTO (g) |
6142 |
2278.075 |
| Compressor Description |
|
1 fan, 3-stage LP, 10-stage HP |
| Emissions Data Status |
C |
C |
| Engine Status |
Out of production |
|
| NOx Compliance Demonstration |
|
2.3.2 e) |
| nvPME Imass Approach (mg/kg) |
|
3.2339 |
| nvPME Imass Climb Out (mg/kg) |
|
0.0965 |
| nvPME Imass Idle (mg/kg) |
|
0.5508 |
| nvPME Imass Max (mg/kg) |
|
19.5629 |
| nvPME Imass Take Off (mg/kg) |
|
0.0855 |
| nvPME Inum Approach (#/kg) |
|
122477400000000 |
| nvPME Inum Climb Out (#/kg) |
|
12887800000 |
| nvPME Inum Idle (#/kg) |
|
51775600000000 |
| nvPME Inum Max (#/kg) |
|
379969100000000 |
| nvPME Inum Take Off (#/kg) |
|
10871180000 |
| nvPMLTO Mass (mg) |
|
326.0666 |
| nvPMLTO Mass Per Thrust (mg/kN) |
|
2.8227 |
| nvPMLTO Mass To CAEP11 (% of limit) |
|
0.8077 |
| nvPMLTO Number (#) |
|
16628060000000000 |
| nvPMLTO Number Per Thrust (#/kN) |
|
143946200000000 |
| nvPMLTO Number To CAEP11 (% of limit) |
|
3.2993 |
| nvPM Mass Concentration Characteristic (mg/m³) |
|
448.2236 |
| nvPM Mass Concentration Max (mg/m³) |
|
407.4801 |
| nvPM Mass Concentration To CAEP10 (% of limit) |
|
7.7269 |
| Turbine Description |
|
2-stage HP, 5-stage LP |