CFM International LEAP-1B

E552016

turbofan engine

The CFM International LEAP-1B is a high-bypass, fuel-efficient turbofan engine developed specifically for the Boeing 737 MAX family, incorporating advanced materials and aerodynamics to reduce fuel burn and emissions.

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All labels observed (7)

Label	Occurrences
CFM International LEAP-1B canonical	5
CFM International LEAP	1
CFM International LEAP-1A	1
CFM LEAP program	1
CFM LEAP-1B	1
CFM LEAP-1B engines	1
LEAP engine (through CFM International)	1

How this entity was disambiguated

This entity first appeared as the object of triple T5848588 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: CFM International LEAP-1B
Context triple: [Boeing 737 MAX 8, engineType, CFM International LEAP-1B]

A. Pratt & Whitney PW6000
The Pratt & Whitney PW6000 is a turbofan engine developed for short- to medium-haul narrow-body airliners, known for its use on the Airbus A318.
B. Pratt & Whitney PW1500G
The Pratt & Whitney PW1500G is a geared turbofan aircraft engine series designed for modern regional and narrow-body jets, noted for its improved fuel efficiency, lower emissions, and reduced noise.
C. Rolls-Royce Trent XWB
The Rolls-Royce Trent XWB is a high-bypass turbofan jet engine developed for long-haul widebody airliners, known for its fuel efficiency and use on modern next-generation aircraft.
D. Pratt & Whitney PW4000
The Pratt & Whitney PW4000 is a family of high-bypass turbofan engines widely used on large commercial wide-body aircraft such as the Boeing 747, 767, and Airbus A330.
E. NK-33 engine
The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: CFM International LEAP-1B
Target entity description: The CFM International LEAP-1B is a high-bypass, fuel-efficient turbofan engine developed specifically for the Boeing 737 MAX family, incorporating advanced materials and aerodynamics to reduce fuel burn and emissions.

A. Pratt & Whitney PW6000
The Pratt & Whitney PW6000 is a turbofan engine developed for short- to medium-haul narrow-body airliners, known for its use on the Airbus A318.
B. Pratt & Whitney PW1500G
The Pratt & Whitney PW1500G is a geared turbofan aircraft engine series designed for modern regional and narrow-body jets, noted for its improved fuel efficiency, lower emissions, and reduced noise.
C. Rolls-Royce Trent XWB
The Rolls-Royce Trent XWB is a high-bypass turbofan jet engine developed for long-haul widebody airliners, known for its fuel efficiency and use on modern next-generation aircraft.
D. Pratt & Whitney PW4000
The Pratt & Whitney PW4000 is a family of high-bypass turbofan engines widely used on large commercial wide-body aircraft such as the Boeing 747, 767, and Airbus A330.
E. NK-33 engine
The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	turbofan engine ⓘ
application	narrow-body airliners ⓘ
bypassRatio	high bypass ratio ⓘ
certificationAuthority	EASA ⓘ FAA ⓘ
combustorType	lean-burn combustor ⓘ
compressorType	high-pressure axial compressor ⓘ
configuration	two-spool turbofan ⓘ
controlSystem	dual-channel full authority digital engine control ⓘ
countryOfOrigin	France ⓘ United States ⓘ linked to: United States of America
designedForAircraft	Boeing 737 MAX 10 ⓘ Boeing 737 MAX 7 ⓘ Boeing 737 MAX 8 ⓘ Boeing 737 MAX 9 ⓘ Boeing 737 MAX family ⓘ linked to: Boeing 737 MAX
designGoal	compliance with stricter emissions regulations ⓘ compliance with stricter noise regulations ⓘ improved fuel efficiency ⓘ reduced environmental impact ⓘ reduced operating cost ⓘ
developer	CFM International ⓘ linked to: Safran Aircraft Engines
emissions	reduced CO2 emissions ⓘ reduced NOx emissions ⓘ
enteredServiceOnAircraft	Boeing 737 MAX ⓘ
fanDiameter	approximately 69 inches ⓘ
feature	3D aerodynamic design ⓘ FADEC control system ⓘ advanced aerodynamics ⓘ low-emissions combustor ⓘ twin-annular pre-swirl combustor technology ⓘ
fuelEfficiency	reduced fuel burn compared to CFM56-7B ⓘ
intendedRole	main propulsion for Boeing 737 MAX ⓘ
launchAircraft	Boeing 737 MAX 8 ⓘ
manufacturer	CFM International ⓘ linked to: Safran Aircraft Engines
marketSegment	single-aisle commercial aircraft engines ⓘ
materialUsed	carbon-fiber composite fan blades ⓘ ceramic matrix composites ⓘ composite fan case ⓘ
noiseLevel	reduced noise compared to previous generation engines ⓘ
partOfFamily	CFM International LEAP engine family ⓘ
predecessor	CFM International CFM56-7B ⓘ linked to: CFM International CFM56-7B turbofan
primaryCustomer	Boeing ⓘ
program	CFM LEAP program ⓘ linked to: CFM International LEAP-1B
thrustClass	approximately 23,000 to 29,000 lbf ⓘ
turbineType	high-pressure turbine ⓘ low-pressure turbine ⓘ
usedOn	commercial passenger aircraft ⓘ

How these facts were elicited

Referenced by (11)

Full triples — surface form annotated when it differs from this entity's canonical label.

Boeing 737 MAX 8 → engineType → CFM International LEAP-1B ⓘ

Boeing 737 MAX 9 → engineModel → CFM International LEAP-1B ⓘ

Boeing 737 MAX 10 → powerplant → CFM International LEAP-1B ⓘ

CFM International CFM56-7B turbofan → successor → CFM LEAP-1B ⓘ