CFM International LEAP-1B
E552016
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| CFM International LEAP-1B canonical | 3 |
| CFM LEAP-1B | 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
NERFINISHED
ⓘ
FAA NERFINISHED ⓘ |
| 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 of America ⓘ
surface form:
United States
|
| designedForAircraft |
Boeing 737 MAX 10
NERFINISHED
ⓘ
Boeing 737 MAX 7 NERFINISHED ⓘ Boeing 737 MAX 8 NERFINISHED ⓘ Boeing 737 MAX 9 NERFINISHED ⓘ Boeing 737 MAX family NERFINISHED ⓘ |
| designGoal |
compliance with stricter emissions regulations
ⓘ
compliance with stricter noise regulations ⓘ improved fuel efficiency ⓘ reduced environmental impact ⓘ reduced operating cost ⓘ |
| developer | CFM International NERFINISHED ⓘ |
| emissions |
reduced CO2 emissions
ⓘ
reduced NOx emissions ⓘ |
| enteredServiceOnAircraft | Boeing 737 MAX NERFINISHED ⓘ |
| 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 NERFINISHED ⓘ |
| manufacturer | CFM International NERFINISHED ⓘ |
| 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 NERFINISHED ⓘ |
| predecessor | CFM International CFM56-7B NERFINISHED ⓘ |
| primaryCustomer | Boeing NERFINISHED ⓘ |
| program | CFM LEAP program NERFINISHED ⓘ |
| thrustClass | approximately 23,000 to 29,000 lbf ⓘ |
| turbineType |
high-pressure turbine
ⓘ
low-pressure turbine ⓘ |
| usedOn | commercial passenger aircraft ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: CFM International LEAP-1B Description of subject: 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.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
CFM LEAP-1B
this entity surface form:
LEAP engine (through CFM International)