| Family |
CFM56-5B |
CFM56-7B |
| EASA ID |
3CM021 |
8CM066 |
| 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 |
DAC-II |
Tech Insertion |
| High Pressure Compressor Stages |
1 |
1 |
| Low-Pressure Turbine Stages |
4 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
5.9 |
5.1 |
| Overall Pressure Ratio |
27.7 |
29 |
| Maximum Takeoff Thrust (kN) |
120.1 |
121.4 |
| Hydrocarbon Take Off (g/kg fuel) |
0.1 |
0.03 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.2 |
0.02 |
| Hydrocarbon Approach (g/kg fuel) |
5.3 |
0.05 |
| Hydrocarbon Idle (g/kg fuel) |
3.6 |
1.54 |
| Hydrocarbon Unitary Average (g/kN) |
9.2 |
2.25 |
| Hydrocarbon Unitary Sigma (g/kN) |
|
0.35 |
| Hydrocarbon Unitary Range (g/kN) |
8.2-10.1 |
1.88-2.56 |
| Hydrocarbon Unitary Characteristic (g/kN) |
12 |
2.62 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
61.2 |
13.4 |
| Hydrocarbon LTO (g) |
1136 |
273 |
| Carbon Monoxide Take Off (g/kg fuel) |
1.4 |
0.31 |
| Carbon Monoxide Climb Out (g/kg fuel) |
3.6 |
0.17 |
| Carbon Monoxide Approach (g/kg fuel) |
29.1 |
2.82 |
| Carbon Monoxide Idle (g/kg fuel) |
40.1 |
29.39 |
| Carbon Monoxide Unitary Average (g/kN) |
84.7 |
43.8 |
| Carbon Monoxide Unitary SD (g/kN) |
|
2.5 |
| Carbon Monoxide Unitary Range (g/kN) |
79-90.4 |
41-45.6 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
96.5 |
47.4 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
81.8 |
40.2 |
| NOx Take Off (g/kg fuel) |
18.4 |
23.94 |
| NOx Climb Out (g/kg fuel) |
13.6 |
17.89 |
| NOx Approach (g/kg fuel) |
6.5 |
9.09 |
| NOx Idle (g/kg fuel) |
3.9 |
4.36 |
| NOx Unitary Average (g/kN) |
31.7 |
43.09 |
| NOx Unitary SD (g/kN) |
|
1.1 |
| NOx Unitary Range (g/kN) |
31.1-32.4 |
42.4-44.4 |
| NOx Unitary Characteristic (g/kN) |
34.9 |
45.6 |
| NOx Unitaryto Standard (% of limit) |
36.6 |
46.5 |
| NOx Unitaryto CAEP2 (% of limit) |
45.7 |
58.2 |
| NOx Unitaryto CAEP4 (% of limit) |
55.1 |
69.7 |
| NOx Unitaryto CAEP6 (% of limit) |
62.6 |
79.2 |
| NOx Unitaryto CAEP8 (% of limit) |
74.4 |
93.6 |
| NOx LTO (g) |
3847 |
5232 |
| Smoke Take Off (SN) |
0.3 |
13.4 |
| Smoke Climb Out (SN) |
0.3 |
11.2 |
| Smoke Approach (SN) |
0.5 |
2.1 |
| Smoke Idle (SN) |
2 |
2.1 |
| Smoke Max (SN) |
2 |
13.38 |
| Smoke Sigma (SN) |
|
4.5 |
| Smoke Range (SN) |
1.8-2.2 |
8.4-16.9 |
| Smoke Characteristic (SN) |
2.3 |
14.72 |
| Smoke Characteristicto Regulatory (% of limit) |
10.2 |
65.6 |
| Fuel Flow Take Off (kg/s) |
1.14 |
1.293 |
| Fuel Flow Climbout (kg/s) |
0.95 |
1.031 |
| Fuel Flow Approach (kg/s) |
0.34 |
0.343 |
| Fuel Flow Idle (kg/s) |
0.12 |
0.11 |
| Fuel LTO (kg) |
442 |
444 |
| Fuel Venting Compliant |
No |
Yes |
| Carbon Monoxide LTO (g) |
10400 |
5320 |
| 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 |