LEAP-1B28B2C

Turbofan · Family: LEAP-1B · CFM International

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Maximum Takeoff Thrust

124.7 kN

Bypass Ratio

8.3

Overall Pressure Ratio

40.5

Diameter

1763 mm

Length

3147 mm

Dry Weight

2780 kg

Fuel Flow Take Off

1.014 kg/s

NOx Unitaryto CAEP8

82.7 % of limit

Architecture

Fan	Fan Stages —	Fan Blades 18	Fan Technology —	Fan Pressure Ratio —
Gearbox	Geared Fan No	Gear —	Reduction Ratio —
LP compressor	Low-Pressure Compressor Stages 3	Low-Pressure Compressor Technology —	BP Compressor Pressure Ratio —
IP compressor	Intermediary-Pressure Compressor Stages —	Intermediary-Pressure Compressor Technology —	IP Compressor Pressure Ratio —
HP compressor	High-Pressure Compressor Stages 10	High-Pressure Compressor Technology —	HP Compressor Pressure Ratio —
Combustor	Combustion Chamber TAPS II
HP turbine	High Pressure Compressor Stages 2	High-Pressure Turbine Technology —
IP turbine	Intermediary-Pressure Turbine Stages —	Intermediary-Pressure Turbine Technology —
LP turbine	Low-Pressure Turbine Stages 5	Low-Pressure Turbine Technology —
Whole engine	Streams 2	Bypass Ratio 8.3	Overall Pressure Ratio 40.5	Afterburner No

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LEAP-1B

Name	Maximum Takeoff Thrust (kN)	Bypass Ratio	Overall Pressure Ratio	Fuel Flow Take Off (kg/s)	NOx LTO (g)	NOx Unitaryto CAEP8 (% of limit)	Smoke Max (SN)	EASA ID
LEAP-1B21	111.3	8.5	36.8	0.877	4053	66.2	1.16	20CM094
LEAP-1B23	115.2	8.5	37.9	0.916	4573	69.7	1.16	20CM095
LEAP-1B25	119.2	8.4	40.135	0.96	5417	74.9	1.16	20CM096
LEAP-1B27	124.7	8.3	40.5	1.014	6326	82.7	1.16	20CM098
LEAP-1B28B2C	124.7	8.3	40.5	1.014	6326	82.7	1.16	20CM099
LEAP-1B28BBJ2	124.7	8.3	40.5	1.014	6326	82.7	1.16	20CM097
LEAP-1B28	130.4	8.6	41.5	1.061	7534	91.6	1.16	18CM084
LEAP-1B28/28B2/28B1/28B3	130.4	8.3	42	1.075	7837	94	1.16	20CM101
LEAP-1B28B2	130.4	8.6	41.5	1.061	7534	91.6	1.16	18CM085
LEAP-1B28BBJ1	130.4	8.3	42	1.075	7837	94	1.16	20CM100
LEAP-1B28/28B1/28B2/28B3	130.4085	8.2397	42.0298	1.07	8343.335	91.3548	2.1594	08P28CM143

Airplanes

Name	Model	Aircraft Engine	Number of Engines	Length (m)	Flat Wing Span (m)	Two Class Typical Seating	Max Seating
737-8	737 MAX 8	LEAP-1B28/28B1/28B2/28B3	2	39.52	35.92	178	189
737-9	737 MAX 9	LEAP-1B28/28B1/28B2/28B3	2	42.16	35.92

Similar reaction turbines

Name	Family	Aircraft Engine Manufacturer	Maximum Takeoff Thrust (kN)	Bypass Ratio	Overall Pressure Ratio
Progress D-27		Ivchenko-Progress ZMKB	119			Compare
LEAP-1A26CJ	LEAP-1A	CFM International	120.6357	10.706	33.1765	Compare
LEAP-1C28	LEAP-1C	CFM International	129.9763	10.5594	35.4641	Compare
CFM56-5B4/P	CFM56-5B	CFM International	120.11	5.9	27.69	Compare
Shenyang WS-10		Shenyang	135			Compare
CFM56-5A3	CFM56-5A	CFM International	117.88	6	27.9	Compare

All data (81 fields)

Name: LEAP-1B28B2C
Family: LEAP-1B
EASA ID: 20CM099
Aircraft Engine Manufacturer: CFM International
Aircraft Engine Type: Turbofan
Comment: Boeing 737 MAX
Dry Weight (kg): 2780
Diameter (mm): 1763
Max Rotating Diameter (mm): 1763
Length (mm): 3147
Height (mm): 2256
Width (mm): 2421
Wikipedia Article (URL): en.wikipedia.org/wiki/CFM_International_LEAP
Fuel: Jet A
Fan Blades: 18
Geared Fan: No
Low-Pressure Compressor Stages: 3
High-Pressure Compressor Stages: 10
Combustion Chamber: TAPS II
High Pressure Compressor Stages: 2
Low-Pressure Turbine Stages: 5
Afterburner: No
Streams: 2
Bypass Ratio: 8.3
Overall Pressure Ratio: 40.5
Maximum Takeoff Thrust (kN): 124.7
Hydrocarbon Take Off (g/kg fuel): 0.05
Hydrocarbon Climb Out (g/kg fuel): 0.04
Hydrocarbon Approach (g/kg fuel): 0.05
Hydrocarbon Idle (g/kg fuel): 0.51
Hydrocarbon Unitary Average (g/kN): 0.68
Hydrocarbon Unitary Sigma (g/kN): 0.09
Hydrocarbon Unitary Range (g/kN): 0.66-0.84
Hydrocarbon Unitary Characteristic (g/kN): 1.05
Hydrocarbon Unitary Characteristicto Regulatory (% of limit): 5.4
Hydrocarbon LTO (g): 85
Carbon Monoxide Take Off (g/kg fuel): 0.17
Carbon Monoxide Climb Out (g/kg fuel): 0.14
Carbon Monoxide Approach (g/kg fuel): 1.11
Carbon Monoxide Idle (g/kg fuel): 14.4
Carbon Monoxide Unitary Average (g/kN): 17.81
Carbon Monoxide Unitary SD (g/kN): 0.77
Carbon Monoxide Unitary Range (g/kN): 16.97-18.38
Carbon Monoxide Unitary Characteristic (g/kN): 21.86
Carbon Monoxide Unitary Characteristicto Regulatory (% of limit): 18.5
NOx Take Off (g/kg fuel): 55.26
NOx Climb Out (g/kg fuel): 23.26
NOx Approach (g/kg fuel): 11.59
NOx Idle (g/kg fuel): 4.59
NOx Unitary Average (g/kN): 50.72
NOx Unitary SD (g/kN): 1.38
NOx Unitary Range (g/kN): 56.39-59.15
NOx Unitary Characteristic (g/kN): 58.79
NOx Unitaryto Standard (% of limit): 48.6
NOx Unitaryto CAEP2 (% of limit): 60.7
NOx Unitaryto CAEP4 (% of limit): 66.8
NOx Unitaryto CAEP6 (% of limit): 73.5
NOx Unitaryto CAEP8 (% of limit): 82.7
NOx LTO (g): 6326
Smoke Take Off (SN): 0.94
Smoke Climb Out (SN): 0.85
Smoke Approach (SN): 1.07
Smoke Idle (SN): 0.8
Smoke Max (SN): 1.16
Smoke Sigma (SN): 0.29
Smoke Range (SN): 0.34-0.9
Smoke Characteristic (SN): 1.49
Smoke Characteristicto Regulatory (% of limit): 6.7
Fuel Flow Take Off (kg/s): 1.014
Fuel Flow Climbout (kg/s): 0.826
Fuel Flow Approach (kg/s): 0.273
Fuel Flow Idle (kg/s): 0.095
Fuel LTO (kg): 365
Fuel Venting Compliant: Yes
Carbon Monoxide LTO (g): 2221
Compressor Description: 1 fan, 3-stage LP, 10-stage HP
Emissions Data Status: C
Emissions Data Superseded: Yes
Emissions Superseded By: 01P20CM137
NOx Compliance Demonstration: 2.3.2 e)
Turbine Description: 2-stage HP, 5-stage LP