| Family |
CFM56-7B |
CFM56-5B |
| EASA ID |
3CM031 |
7CM050 |
| Aircraft Engine Manufacturer |
CFM International |
CFM International |
| Aircraft Engine Type |
Turbofan |
Turbofan |
| Comment |
Boeing 737 Next Generation |
Airbus A318, A319, A320, A321 |
| Dry Weight (kg) |
2366 |
2381 |
| Diameter (mm) |
1549 |
1735 |
| Max Rotating Diameter (mm) |
1549 |
1735 |
| Length (mm) |
2507 |
2601 |
| Wikipedia Article (URL) |
en.wikipedia.org/wiki/CFM_International_CFM56 |
en.wikipedia.org/wiki/CFM_International_CFM56 |
| Fuel |
Jet A |
Jet A |
| Fan Blades |
24 |
36 |
| Geared Fan |
No |
No |
| Low-Pressure Compressor Stages |
3 |
4 |
| High-Pressure Compressor Stages |
9 |
9 |
| Combustion Chamber |
|
DAC |
| High Pressure Compressor Stages |
1 |
1 |
| Low-Pressure Turbine Stages |
4 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
5.3 |
5.9 |
| Overall Pressure Ratio |
24.41 |
24.4 |
| Maximum Takeoff Thrust (kN) |
100.97 |
102.2 |
| Hydrocarbon Take Off (g/kg fuel) |
0.1 |
0.2 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.1 |
0.3 |
| Hydrocarbon Approach (g/kg fuel) |
0.1 |
0.4 |
| Hydrocarbon Idle (g/kg fuel) |
2.5 |
4.4 |
| Hydrocarbon Unitary Average (g/kN) |
4.22 |
7.6 |
| Hydrocarbon Unitary Range (g/kN) |
|
7.4-7.8 |
| Hydrocarbon Unitary Characteristic (g/kN) |
6.4 |
9.9 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
32.7 |
50.5 |
| Hydrocarbon LTO (g) |
432 |
789 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.5 |
2.9 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.6 |
8.1 |
| Carbon Monoxide Approach (g/kg fuel) |
2.5 |
21 |
| Carbon Monoxide Idle (g/kg fuel) |
22.8 |
44.1 |
| Carbon Monoxide Unitary Average (g/kN) |
39.58 |
94.3 |
| Carbon Monoxide Unitary Range (g/kN) |
|
92.9-95.8 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
48.6 |
107.5 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
41.2 |
91.1 |
| NOx Take Off (g/kg fuel) |
23.1 |
13.9 |
| NOx Climb Out (g/kg fuel) |
19 |
10.7 |
| NOx Approach (g/kg fuel) |
10 |
7.6 |
| NOx Idle (g/kg fuel) |
4.5 |
3.2 |
| NOx Unitary Average (g/kN) |
45.16 |
26.9 |
| NOx Unitary Range (g/kN) |
|
26.5-27.2 |
| NOx Unitary Characteristic (g/kN) |
52.4 |
29.5 |
| NOx Unitaryto Standard (% of limit) |
59 |
33.2 |
| NOx Unitaryto CAEP2 (% of limit) |
73.7 |
41.5 |
| NOx Unitaryto CAEP4 (% of limit) |
90.3 |
51 |
| NOx Unitaryto CAEP6 (% of limit) |
102.6 |
57.8 |
| NOx Unitaryto CAEP8 (% of limit) |
124 |
69.9 |
| NOx LTO (g) |
4560 |
2754 |
| Smoke Take Off (SN) |
12 |
0.3 |
| Smoke Climb Out (SN) |
10.5 |
0.3 |
| Smoke Approach (SN) |
0 |
6.6 |
| Smoke Idle (SN) |
0 |
1.7 |
| Smoke Max (SN) |
12 |
6.6 |
| Smoke Characteristic (SN) |
15.4 |
7.8 |
| Smoke Characteristicto Regulatory (% of limit) |
65.2 |
33.1 |
| Fuel Flow Take Off (kg/s) |
1.021 |
0.961 |
| Fuel Flow Climbout (kg/s) |
0.844 |
0.799 |
| Fuel Flow Approach (kg/s) |
0.298 |
0.296 |
| Fuel Flow Idle (kg/s) |
0.105 |
0.105 |
| Fuel LTO (kg) |
390 |
381 |
| Fuel Venting Compliant |
No |
No |
| Carbon Monoxide LTO (g) |
4002 |
9687 |
| Compressor Description |
1 fan, 3-stage LP, 9-stage HP |
1 fan, 4-stage LP, 9-stage HP |
| Emissions Data Status |
C |
C |
| Engine Status |
Out of production |
Out of production |
| Turbine Description |
1-stage HP, 4-stage LP |
1-stage HP, 4-stage LP |