| Family |
CFM56-5B |
CFM56-7B |
| EASA ID |
2CM019 |
8CM064 |
| 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 |
5.3 |
| Overall Pressure Ratio |
24.8 |
25.6 |
| Maximum Takeoff Thrust (kN) |
104.5 |
107.6 |
| Hydrocarbon Take Off (g/kg fuel) |
0.1 |
0.02 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.2 |
0.03 |
| Hydrocarbon Approach (g/kg fuel) |
0.2 |
0.06 |
| Hydrocarbon Idle (g/kg fuel) |
3.4 |
2.3 |
| Hydrocarbon Unitary Average (g/kN) |
5.84 |
3.51 |
| Hydrocarbon Unitary Sigma (g/kN) |
|
0.45 |
| Hydrocarbon Unitary Range (g/kN) |
4.58-8.45 |
3.01-3.88 |
| Hydrocarbon Unitary Characteristic (g/kN) |
6.7 |
4.09 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
34 |
20.9 |
| Hydrocarbon LTO (g) |
630 |
377 |
| Carbon Monoxide Take Off (g/kg fuel) |
4.48 |
0.18 |
| Carbon Monoxide Climb Out (g/kg fuel) |
12.18 |
0.15 |
| Carbon Monoxide Approach (g/kg fuel) |
17.75 |
3.68 |
| Carbon Monoxide Idle (g/kg fuel) |
46.1 |
34.71 |
| Carbon Monoxide Unitary Average (g/kN) |
103.35 |
54.38 |
| Carbon Monoxide Unitary SD (g/kN) |
|
2.8 |
| Carbon Monoxide Unitary Range (g/kN) |
97.66-109.78 |
51.2-56.4 |
| Carbon Monoxide Unitary Characteristic (g/kN) |
110.6 |
58.8 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
93.7 |
49.8 |
| NOx Take Off (g/kg fuel) |
13.51 |
18.93 |
| NOx Climb Out (g/kg fuel) |
10.41 |
15.6 |
| NOx Approach (g/kg fuel) |
10.32 |
8.6 |
| NOx Idle (g/kg fuel) |
3.9 |
4.09 |
| NOx Unitary Average (g/kN) |
30.2 |
37.11 |
| NOx Unitary SD (g/kN) |
|
1.2 |
| NOx Unitary Range (g/kN) |
29.37-31.42 |
36.1-38.5 |
| NOx Unitary Characteristic (g/kN) |
31.7 |
39.3 |
| NOx Unitaryto Standard (% of limit) |
35.4 |
43.1 |
| NOx Unitaryto CAEP2 (% of limit) |
44.2 |
53.9 |
| NOx Unitaryto CAEP4 (% of limit) |
54 |
65.5 |
| NOx Unitaryto CAEP6 (% of limit) |
61.4 |
74.5 |
| NOx Unitaryto CAEP8 (% of limit) |
74.1 |
89.5 |
| NOx LTO (g) |
3158 |
3995 |
| Smoke Take Off (SN) |
0.5 |
12.1 |
| Smoke Climb Out (SN) |
0.5 |
8.7 |
| Smoke Approach (SN) |
3.8 |
2.1 |
| Smoke Idle (SN) |
3.5 |
2.1 |
| Smoke Max (SN) |
3.7 |
12.07 |
| Smoke Sigma (SN) |
|
3.4 |
| Smoke Range (SN) |
3.1-4.2 |
8.3-14.7 |
| Smoke Characteristic (SN) |
4 |
13.28 |
| Smoke Characteristicto Regulatory (% of limit) |
17.1 |
57.2 |
| Fuel Flow Take Off (kg/s) |
0.998 |
1.086 |
| Fuel Flow Climbout (kg/s) |
0.827 |
0.895 |
| Fuel Flow Approach (kg/s) |
0.315 |
0.308 |
| Fuel Flow Idle (kg/s) |
0.111 |
0.103 |
| Fuel LTO (kg) |
400 |
398 |
| Fuel Venting Compliant |
No |
Yes |
| Carbon Monoxide LTO (g) |
10842 |
5854 |
| 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 |