Raptor engine
E277914
The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Raptor engine canonical | 5 |
| Raptor sea-level engine | 2 |
| Raptor engine family | 1 |
| Raptor sea‑level engine | 1 |
| SpaceX Raptor | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2546304 — 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: Raptor engine Context triple: [Raptor, abbreviation, Raptor engine]
-
A.
Rocketdyne H-1
The Rocketdyne H-1 was a kerosene/liquid-oxygen rocket engine developed in the United States and used on early Saturn launch vehicles during the Apollo era.
-
B.
CE-20 cryogenic engine
The CE-20 cryogenic engine is an Indian-developed, liquid hydrogen–liquid oxygen rocket engine that powers the upper stage of ISRO’s heaviest launch vehicles for placing large payloads into orbit.
-
C.
Curtiss-Wright XLR25 rocket engine
The Curtiss-Wright XLR25 was an American liquid-fueled rocket engine developed in the 1950s to power high-speed experimental research aircraft such as the Bell X-2.
-
D.
RD-107
RD-107 is a Soviet-designed liquid-fueled rocket engine, best known for powering the first stages of early R-7 family launch vehicles used in historic missions like Sputnik and Vostok.
-
E.
Turbo-Union RB199
The Turbo-Union RB199 is a tri-nationally developed afterburning turbofan jet engine used to power the Panavia Tornado strike aircraft.
- 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: Raptor engine Target entity description: The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
-
A.
Rocketdyne H-1
The Rocketdyne H-1 was a kerosene/liquid-oxygen rocket engine developed in the United States and used on early Saturn launch vehicles during the Apollo era.
-
B.
CE-20 cryogenic engine
The CE-20 cryogenic engine is an Indian-developed, liquid hydrogen–liquid oxygen rocket engine that powers the upper stage of ISRO’s heaviest launch vehicles for placing large payloads into orbit.
-
C.
Curtiss-Wright XLR25 rocket engine
The Curtiss-Wright XLR25 was an American liquid-fueled rocket engine developed in the 1950s to power high-speed experimental research aircraft such as the Bell X-2.
-
D.
RD-107
RD-107 is a Soviet-designed liquid-fueled rocket engine, best known for powering the first stages of early R-7 family launch vehicles used in historic missions like Sputnik and Vostok.
-
E.
Turbo-Union RB199
The Turbo-Union RB199 is a tri-nationally developed afterburning turbofan jet engine used to power the Panavia Tornado strike aircraft.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
full-flow staged combustion engine
ⓘ
liquid-propellant rocket engine ⓘ rocket engine ⓘ |
| application |
orbital launch vehicle
ⓘ
reusable launch system ⓘ |
| combustionChamberType |
fuel-rich preburner
ⓘ
oxygen-rich preburner ⓘ |
| combustionCycleFeature | both propellants fully gaseous before main combustion ⓘ |
| companyProgram |
SpaceX Starship program
ⓘ
linked to:
Starship SN8 prototype
|
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designer | SpaceX ⓘ |
| developer | SpaceX propulsion engineering team ⓘ |
| engineCycle | full-flow staged combustion ⓘ |
| fuelChoiceRationale | supports in-situ resource utilization on Mars ⓘ |
| fuelCoolingMethod | regenerative cooling ⓘ |
| fuelType | methalox ⓘ |
| generation | next-generation SpaceX engine ⓘ |
| guidanceIntegration | integrated with Starship flight control systems ⓘ |
| hasNozzleVariant |
sea-level nozzle
ⓘ
vacuum-optimized nozzle ⓘ |
| intendedUseCase |
high-cadence launch operations
ⓘ
interplanetary transport ⓘ |
| intendedVehicle |
Starship
ⓘ
Super Heavy ⓘ
linked to:
Super Heavy booster
|
| launchSystem |
SpaceX Starship launch system
ⓘ
linked to:
Starship launch system
|
| manufacturer | SpaceX ⓘ |
| organization | SpaceX ⓘ |
| oxidizer | liquid oxygen ⓘ |
| predecessor | Merlin engine family ⓘ |
| primaryMaterialUse | high-strength alloys ⓘ |
| propellantRatio | methane-oxygen ⓘ |
| propellantState | cryogenic ⓘ |
| propellantType |
liquid methane
ⓘ
liquid oxygen ⓘ |
| reusability | designed for reuse ⓘ |
| status |
in development
ⓘ
in operational use ⓘ in testing ⓘ |
| testLocation | McGregor, Texas ⓘ |
| throttleCapability | deep throttling capability ⓘ |
| thrustPhase |
sea-level
ⓘ
vacuum ⓘ |
| usedFor |
first stage propulsion
ⓘ
second stage propulsion ⓘ |
| usedOnMission | Starship test flights from Starbase, Texas ⓘ |
| variant |
Raptor 1
ⓘ
linked to:
Raptor
Raptor 2 ⓘ
linked to:
Raptor
Raptor Vacuum ⓘ
linked to:
Raptor vacuum 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: Raptor engine Description of subject: The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Raptor engine
linked to: Raptor engine
linked to: Raptor engine
linked to: Raptor engine
linked to: Raptor engine