Reaction Motors XLR11
E95173
The Reaction Motors XLR11 was an early liquid-fueled rocket engine used in pioneering U.S. experimental aircraft, notably enabling the Bell X-1 to break the sound barrier.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Reaction Motors XLR11 canonical | 4 |
| Reaction Motors XLR11 rocket engine | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T804647 — 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: Reaction Motors XLR11 Context triple: [Bell X-1, engineModel, Reaction Motors XLR11]
-
A.
Ramport Aero
Ramport Aero is the company responsible for managing and operating Zhukovsky International Airport near Moscow, Russia.
-
B.
Rocket V8 engine
The Rocket V8 engine was Oldsmobile’s pioneering overhead-valve V8 introduced in the late 1940s, widely credited with helping launch the American high-performance and muscle car era.
-
C.
RL10
RL10 is a family of high-performance, liquid hydrogen–liquid oxygen cryogenic rocket engines developed by Aerojet Rocketdyne and widely used on U.S. upper stages such as Centaur and Delta IV.
-
D.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
E.
Honeywell AGT1500
The Honeywell AGT1500 is a gas turbine engine used to power the U.S. Army’s M1 Abrams main battle tank, known for its high power output and multi-fuel capability.
- 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: Reaction Motors XLR11 Target entity description: The Reaction Motors XLR11 was an early liquid-fueled rocket engine used in pioneering U.S. experimental aircraft, notably enabling the Bell X-1 to break the sound barrier.
-
A.
Ramport Aero
Ramport Aero is the company responsible for managing and operating Zhukovsky International Airport near Moscow, Russia.
-
B.
Rocket V8 engine
The Rocket V8 engine was Oldsmobile’s pioneering overhead-valve V8 introduced in the late 1940s, widely credited with helping launch the American high-performance and muscle car era.
-
C.
RL10
RL10 is a family of high-performance, liquid hydrogen–liquid oxygen cryogenic rocket engines developed by Aerojet Rocketdyne and widely used on U.S. upper stages such as Centaur and Delta IV.
-
D.
Mitsubishi Kinsei radial engine
The Mitsubishi Kinsei was a Japanese air-cooled radial aircraft engine widely used in World War II combat aircraft.
-
E.
Honeywell AGT1500
The Honeywell AGT1500 is a gas turbine engine used to power the U.S. Army’s M1 Abrams main battle tank, known for its high power output and multi-fuel capability.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf | liquid-fueled rocket engine ⓘ |
| application |
experimental research aircraft
ⓘ
supersonic flight research ⓘ |
| combustionCycle | pressure-fed cycle ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designFeature | four independently selectable chambers ⓘ |
| developmentPurpose | high-speed high-altitude research ⓘ |
| era |
1940s
ⓘ
1950s ⓘ |
| firstSupersonicAircraftPowered | Bell X-1 ⓘ |
| fuel |
alcohol
ⓘ
ethyl alcohol ⓘ |
| fuelFeedSystem | pressurized tanks ⓘ |
| ignitionSystem | pyrotechnic ignition ⓘ |
| manufacturer | Reaction Motors Inc. ⓘ |
| museumDisplay |
examples displayed at the Smithsonian National Air and Space Museum
ⓘ
examples displayed at various aviation museums in the United States ⓘ |
| notableAchievement | powered Bell X-1 past the speed of sound in level flight ⓘ |
| notableFlight | Bell X-1 flight on 14 October 1947 ⓘ |
| numberOfCombustionChambers | 4 ⓘ |
| oxidizer | liquid oxygen ⓘ |
| pilotAssociated | Chuck Yeager ⓘ |
| program |
U.S. X-plane program
ⓘ
linked to:
X-Plane experimental aircraft programs
|
| propellantType | liquid propellant ⓘ |
| propulsionType | rocket propulsion ⓘ |
| status | retired ⓘ |
| successor | Reaction Motors XLR99 ⓘ |
| throttleCapability | stepwise by chamber selection ⓘ |
| thrustVacuum |
about 27 kilonewtons
ⓘ
about 6,000 pounds-force ⓘ |
| usedByAgency |
NACA
ⓘ
U.S. Air Force ⓘ
linked to:
United States Air Force
U.S. Navy ⓘ
linked to:
United States Navy
|
| usedForRecord | early altitude and speed records in U.S. X-plane program ⓘ |
| usedInVehicle |
Bell X-1
ⓘ
Bell X-1A ⓘ
linked to:
Bell X-1
Bell X-1B ⓘ Bell X-1E ⓘ Bell X-5 (test use) ⓘ
linked to:
Bell X-5
Douglas D-558-2 Skyrocket ⓘ Northrop X-4 Bantam (testbed use) ⓘ
linked to:
Northrop X-4 Bantam
early X-15 test flights (as interim engine) ⓘ |
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: Reaction Motors XLR11 Description of subject: The Reaction Motors XLR11 was an early liquid-fueled rocket engine used in pioneering U.S. experimental aircraft, notably enabling the Bell X-1 to break the sound barrier.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.