| Family |
CFM56-5B |
CFM56-7B |
| EASA ID |
7CM048 |
8CM062 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Airbus A318, A319, A320, A321 |
Boeing 737 Next Generation |
| Dry Weight (kg) |
2381 |
2366 |
| Diameter (mm) |
1735 |
1549 |
| Max Rotating Diameter (mm) |
1735 |
1549 |
| Length (mm) |
2601 |
2507 |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/CFM_International_CFM56 |
en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel |
Jet A |
Jet A |
| Fan Blades |
36 |
24 |
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
4 |
3 |
| High-Pressure Compressor Stages |
9 |
9 |
| Combustion Chamber |
SAC |
Tech Insertion |
| High Pressure Compressor Stages |
1 |
1 |
| Low-Pressure Turbine Stages |
4 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
5.9 |
5.5 |
| Overall Pressure Ratio |
22.6 |
22.4 |
| Maximum Takeoff Thrust (kN) |
94.7 |
91.6 |
| Hydrocarbon Take Off (g/kg fuel) |
0.1 |
0.03 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.1 |
0.03 |
| Hydrocarbon Approach (g/kg fuel) |
0.9 |
0.08 |
| Hydrocarbon Idle (g/kg fuel) |
6.5 |
3.84 |
| Hydrocarbon Unitary Average (g/kN) |
10.8 |
6.26 |
| Hydrocarbon Unitary Sigma (g/kN) |
|
0.63 |
| Hydrocarbon Unitary Range (g/kN) |
|
5.55-6.69 |
| Hydrocarbon Unitary Characteristic (g/kN) |
16.6 |
7.31 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
84.7 |
37.3 |
| Hydrocarbon LTO (g) |
1023 |
574 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.8 |
0.15 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.8 |
0.23 |
| Carbon Monoxide Approach (g/kg fuel) |
3.9 |
5.03 |
| Carbon Monoxide Idle (g/kg fuel) |
32.9 |
43.31 |
| Carbon Monoxide Unitary Average (g/kN) |
54.4 |
73.44 |
| Carbon Monoxide Unitary SD (g/kN) |
|
3.2 |
| Carbon Monoxide Unitary Range (g/kN) |
|
69.8-75.3 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
66.8 |
79.4 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
56.6 |
67.3 |
| NOx Take Off (g/kg fuel) |
19.7 |
15.61 |
| NOx Climb Out (g/kg fuel) |
16.7 |
13.53 |
| NOx Approach (g/kg fuel) |
8.4 |
7.98 |
| NOx Idle (g/kg fuel) |
3.4 |
3.77 |
| NOx Unitary Average (g/kN) |
35.4 |
32.59 |
| NOx Unitary SD (g/kN) |
|
1.1 |
| NOx Unitary Range (g/kN) |
|
31.5-33.7 |
| NOx Unitary Characteristic (g/kN) |
41 |
34.5 |
| NOx Unitaryto Standard (% of limit) |
48.1 |
40.7 |
| NOx Unitaryto CAEP2 (% of limit) |
60.2 |
50.9 |
| NOx Unitaryto CAEP4 (% of limit) |
74.4 |
62.9 |
| NOx Unitaryto CAEP6 (% of limit) |
84.5 |
71.5 |
| NOx Unitaryto CAEP8 (% of limit) |
103.3 |
87.5 |
| NOx LTO (g) |
3358 |
2987 |
| Smoke Take Off (SN) |
5.4 |
8.7 |
| Smoke Climb Out (SN) |
1.5 |
6.8 |
| Smoke Approach (SN) |
0.3 |
2.1 |
| Smoke Idle (SN) |
0.6 |
2.1 |
| Smoke Max (SN) |
5.4 |
8.66 |
| Smoke Sigma (SN) |
|
2.2 |
| Smoke Range (SN) |
|
7.1-11.1 |
| Smoke Characteristic (SN) |
6.9 |
9.52 |
| Smoke Characteristicto Regulatory (% of limit) |
28.7 |
39.3 |
| Fuel Flow Take Off (kg/s) |
0.875 |
0.896 |
| Fuel Flow Climbout (kg/s) |
0.729 |
0.746 |
| Fuel Flow Approach (kg/s) |
0.262 |
0.268 |
| Fuel Flow Idle (kg/s) |
0.094 |
0.094 |
| Fuel LTO (kg) |
342 |
348 |
| Fuel Venting Compliant |
No |
Yes |
| Carbon Monoxide LTO (g) |
5176 |
6729 |
| Compressor Description |
1 fan, 4-stage LP, 9-stage HP |
1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status |
C |
C |
| Engine Status |
Out of production |
Out of production |
| NOx Compliance Demonstration |
|
2.3.2 e) |
| Turbine Description |
1-stage HP, 4-stage LP |
1-stage HP, 4-stage LP |