| Family |
CFM56-5B |
CFM56-7B |
| EASA ID |
2CM018 |
8CM065 |
| 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 |
Tech Insertion |
| High Pressure Compressor Stages |
1 |
1 |
| Low-Pressure Turbine Stages |
4 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
5.7 |
5.1 |
| Overall Pressure Ratio |
27.1 |
27.7 |
| Maximum Takeoff Thrust (kN) |
117.9 |
117 |
| Hydrocarbon Take Off (g/kg fuel) |
0.1 |
0.02 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.1 |
0.02 |
| Hydrocarbon Approach (g/kg fuel) |
11.4 |
0.05 |
| Hydrocarbon Idle (g/kg fuel) |
2.2 |
1.75 |
| Hydrocarbon Unitary Average (g/kN) |
11.2 |
2.58 |
| Hydrocarbon Unitary Sigma (g/kN) |
|
0.37 |
| Hydrocarbon Unitary Range (g/kN) |
10.4-12 |
2.18-2.91 |
| Hydrocarbon Unitary Characteristic (g/kN) |
14.6 |
3.01 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
74.5 |
15.4 |
| Hydrocarbon LTO (g) |
1350 |
302 |
| Carbon Monoxide Take Off (g/kg fuel) |
1.6 |
0.25 |
| Carbon Monoxide Climb Out (g/kg fuel) |
4.9 |
0.16 |
| Carbon Monoxide Approach (g/kg fuel) |
43.8 |
3.07 |
| Carbon Monoxide Idle (g/kg fuel) |
37.1 |
30.94 |
| Carbon Monoxide Unitary Average (g/kN) |
93.5 |
46.81 |
| Carbon Monoxide Unitary SD (g/kN) |
|
2.6 |
| Carbon Monoxide Unitary Range (g/kN) |
87.6-99.3 |
43.8-48.7 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
106.5 |
50.6 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
90.3 |
42.9 |
| NOx Take Off (g/kg fuel) |
16.61 |
21.79 |
| NOx Climb Out (g/kg fuel) |
12.58 |
17.08 |
| NOx Approach (g/kg fuel) |
6.13 |
8.93 |
| NOx Idle (g/kg fuel) |
4.49 |
4.27 |
| NOx Unitary Average (g/kN) |
31.5 |
40.71 |
| NOx Unitary SD (g/kN) |
|
1.2 |
| NOx Unitary Range (g/kN) |
31-31.9 |
39.8-42.1 |
| NOx Unitary Characteristic (g/kN) |
34.6 |
43.1 |
| NOx Unitaryto Standard (% of limit) |
36.7 |
45.2 |
| NOx Unitaryto CAEP2 (% of limit) |
45.9 |
56.5 |
| NOx Unitaryto CAEP4 (% of limit) |
55.5 |
68.1 |
| NOx Unitaryto CAEP6 (% of limit) |
63.1 |
77.3 |
| NOx Unitaryto CAEP8 (% of limit) |
75.2 |
91.9 |
| NOx LTO (g) |
3783 |
4763 |
| Smoke Take Off (SN) |
0.5 |
13.1 |
| Smoke Climb Out (SN) |
0.5 |
9.8 |
| Smoke Approach (SN) |
2.3 |
2.1 |
| Smoke Idle (SN) |
3.5 |
2.1 |
| Smoke Max (SN) |
4.75 |
13.07 |
| Smoke Sigma (SN) |
|
4.1 |
| Smoke Range (SN) |
4.5-5 |
8.4-16.2 |
| Smoke Characteristic (SN) |
5.6 |
14.37 |
| Smoke Characteristicto Regulatory (% of limit) |
24.8 |
63.4 |
| Fuel Flow Take Off (kg/s) |
1.18 |
1.213 |
| Fuel Flow Climbout (kg/s) |
0.975 |
0.986 |
| Fuel Flow Approach (kg/s) |
0.335 |
0.331 |
| Fuel Flow Idle (kg/s) |
0.121 |
0.108 |
| Fuel LTO (kg) |
447 |
429 |
| Fuel Venting Compliant |
No |
Yes |
| Carbon Monoxide LTO (g) |
11234 |
5476 |
| 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 |