| Family |
CFM56-5B |
CFM56-7B |
| EASA ID |
8CM056 |
3CM031 |
| 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 |
Tech Insertion |
|
| High Pressure Compressor Stages |
1 |
1 |
| Low-Pressure Turbine Stages |
4 |
4 |
| Afterburner |
No |
No |
| Streams |
2 |
2 |
| Bypass Ratio |
6 |
5.3 |
| Overall Pressure Ratio |
23.1 |
24.41 |
| Maximum Takeoff Thrust (kN) |
97.9 |
100.97 |
| Hydrocarbon Take Off (g/kg fuel) |
0.03 |
0.1 |
| Hydrocarbon Climb Out (g/kg fuel) |
0.03 |
0.1 |
| Hydrocarbon Approach (g/kg fuel) |
0.08 |
0.1 |
| Hydrocarbon Idle (g/kg fuel) |
3.55 |
2.5 |
| Hydrocarbon Unitary Average (g/kN) |
5.31 |
4.22 |
| Hydrocarbon Unitary Sigma (g/kN) |
0.55 |
|
| Hydrocarbon Unitary Range (g/kN) |
4.68-5.7 |
|
| Hydrocarbon Unitary Characteristic (g/kN) |
6.2 |
6.4 |
| Hydrocarbon Unitary Characteristicto Regulatory (% of limit) |
31.6 |
32.7 |
| Hydrocarbon LTO (g) |
520 |
432 |
| Carbon Monoxide Take Off (g/kg fuel) |
0.15 |
0.5 |
| Carbon Monoxide Climb Out (g/kg fuel) |
0.2 |
0.6 |
| Carbon Monoxide Approach (g/kg fuel) |
4.94 |
2.5 |
| Carbon Monoxide Idle (g/kg fuel) |
41.77 |
22.8 |
| Carbon Monoxide Unitary Average (g/kN) |
64.82 |
39.58 |
| Carbon Monoxide Unitary SD (g/kN) |
2.9 |
|
| Carbon Monoxide Unitary Range (g/kN) |
61.5-66.5 |
|
| Carbon Monoxide Unitary Characteristic (g/kN) |
70.1 |
48.6 |
| Carbon Monoxide Unitary Characteristicto Regulatory (% of limit) |
59.4 |
41.2 |
| NOx Take Off (g/kg fuel) |
16.42 |
23.1 |
| NOx Climb Out (g/kg fuel) |
14.01 |
19 |
| NOx Approach (g/kg fuel) |
8.03 |
10 |
| NOx Idle (g/kg fuel) |
3.81 |
4.5 |
| NOx Unitary Average (g/kN) |
31.13 |
45.16 |
| NOx Unitary SD (g/kN) |
1.1 |
|
| NOx Unitary Range (g/kN) |
30.1-32.2 |
|
| NOx Unitary Characteristic (g/kN) |
33 |
52.4 |
| NOx Unitaryto Standard (% of limit) |
38.3 |
59 |
| NOx Unitaryto CAEP2 (% of limit) |
47.9 |
73.7 |
| NOx Unitaryto CAEP4 (% of limit) |
59 |
90.3 |
| NOx Unitaryto CAEP6 (% of limit) |
67 |
102.6 |
| NOx Unitaryto CAEP8 (% of limit) |
81.7 |
124 |
| NOx LTO (g) |
3047 |
4560 |
| Smoke Take Off (SN) |
9.7 |
12 |
| Smoke Climb Out (SN) |
8 |
10.5 |
| Smoke Approach (SN) |
2.1 |
0 |
| Smoke Idle (SN) |
2.1 |
0 |
| Smoke Max (SN) |
9.7 |
12 |
| Smoke Sigma (SN) |
2.1 |
|
| Smoke Range (SN) |
8-12.1 |
|
| Smoke Characteristic (SN) |
10.7 |
15.4 |
| Smoke Characteristicto Regulatory (% of limit) |
44.9 |
65.2 |
| Fuel Flow Take Off (kg/s) |
0.894 |
1.021 |
| Fuel Flow Climbout (kg/s) |
0.743 |
0.844 |
| Fuel Flow Approach (kg/s) |
0.264 |
0.298 |
| Fuel Flow Idle (kg/s) |
0.092 |
0.105 |
| Fuel LTO (kg) |
343 |
390 |
| Fuel Venting Compliant |
Yes |
No |
| Carbon Monoxide LTO (g) |
6343 |
4002 |
| Compressor Description |
1 fan, 4-stage LP, 9-stage HP |
1 fan, 3-stage LP, 9-stage HP |
| Emissions Data Status |
C |
C |
| Emissions Data Superseded |
Yes |
|
| Emissions Superseded By |
01P08CM106 |
|
| Engine Status |
|
Out of production |
| NOx Compliance Demonstration |
2.3.2 e) |
|
| Turbine Description |
1-stage HP, 4-stage LP |
1-stage HP, 4-stage LP |