Vulcain 2
E290055
Vulcain 2 is a European liquid-fueled cryogenic rocket engine developed by ArianeGroup to power the main stage of Ariane 5 heavy-lift launch vehicles.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Vulcain 2.1 | 2 |
| Vulcain 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2705889 — 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: Vulcain 2 Context triple: [Ariane 5 ECA, firstStageEngine, Vulcain 2]
-
A.
The Fury
The Fury is a 1978 supernatural horror-thriller film directed by Brian De Palma, known for its intense psychic powers storyline and stylized violence.
-
B.
Nemesis
Nemesis is the Greek goddess of retribution and divine justice, known for punishing hubris and restoring moral balance.
-
C.
Underworld
Underworld is a critically acclaimed 1997 novel by Don DeLillo that weaves together Cold War history, American pop culture, and personal narratives into a sprawling meditation on memory, waste, and the late-20th-century United States.
-
D.
Underworld
The Underworld is the ancient Greek realm of the dead, a shadowy subterranean domain where souls go after death under the dominion of Hades.
-
E.
Underworld
Underworld is a dark fantasy action-horror film franchise centered on the secret war between vampires and werewolves (Lycans), known for its stylized visuals and gothic atmosphere.
- 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: Vulcain 2 Target entity description: Vulcain 2 is a European liquid-fueled cryogenic rocket engine developed by ArianeGroup to power the main stage of Ariane 5 heavy-lift launch vehicles.
-
A.
The Fury
The Fury is a 1978 supernatural horror-thriller film directed by Brian De Palma, known for its intense psychic powers storyline and stylized violence.
-
B.
Nemesis
Nemesis is the Greek goddess of retribution and divine justice, known for punishing hubris and restoring moral balance.
-
C.
Underworld
Underworld is a critically acclaimed 1997 novel by Don DeLillo that weaves together Cold War history, American pop culture, and personal narratives into a sprawling meditation on memory, waste, and the late-20th-century United States.
-
D.
Underworld
The Underworld is the ancient Greek realm of the dead, a shadowy subterranean domain where souls go after death under the dominion of Hades.
-
E.
Underworld
Underworld is a dark fantasy action-horror film franchise centered on the secret war between vampires and werewolves (Lycans), known for its stylized visuals and gothic atmosphere.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
cryogenic rocket engine
ⓘ
liquid-fueled rocket engine ⓘ rocket engine ⓘ |
| application | main engine of Ariane 5 core stage ⓘ |
| belongsToFamily | Vulcain engine family ⓘ |
| chamberPressure | approximately 117 bar ⓘ |
| combustionChamberCount | 1 ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin | Europe ⓘ |
| designImprovementOver | Vulcain 1 ⓘ |
| developedFor |
Ariane 5
ⓘ
surface form:
Ariane 5 heavy-lift launch vehicle
|
| developer | ArianeGroup ⓘ |
| diameter | approximately 1.76 m ⓘ |
| dryMass | approximately 1800 kg ⓘ |
| engineCycle | gas-generator cycle ⓘ |
| firstFlightDate | 2002 ⓘ |
| firstFlightVehicle | Ariane 5 ECA ⓘ |
| gimbalCapability | yes ⓘ |
| gimbalRange | approximately 6 degrees ⓘ |
| improvementFeature |
enlarged nozzle compared to Vulcain 1
ⓘ
increased thrust compared to Vulcain 1 ⓘ |
| length | approximately 3.6 m ⓘ |
| manufacturer | ArianeGroup ⓘ |
| nozzleExpansionRatio | approximately 58 ⓘ |
| nozzleMaterial | carbon–carbon composite extension ⓘ |
| oxidizer | liquid oxygen ⓘ |
| predecessor | Vulcain 1 ⓘ |
| propellantFeedSystem | turbopump-fed ⓘ |
| propellantMixtureRatio | approximately 6 ⓘ |
| propellantType |
liquid hydrogen
ⓘ
liquid oxygen ⓘ |
| specificImpulseSeaLevel | approximately 320 s ⓘ |
| specificImpulseVacuum | approximately 434 s ⓘ |
| stageApplication | core stage ⓘ |
| status | operational ⓘ |
| successor |
Vulcain 2
self-linksurface differs
ⓘ
surface form:
Vulcain 2.1
|
| thrustSeaLevel | approximately 960 kN ⓘ |
| thrustVacuum | approximately 1350 kN ⓘ |
| usedByAgency |
Arianespace
ⓘ
European Space Agency ⓘ |
| usedFor |
launching payloads to low Earth orbit
ⓘ
launching satellites to geostationary transfer orbit ⓘ |
| usedInVehicle |
Ariane 5
ⓘ
Ariane 5 ECA ⓘ Ariane 5 ES ⓘ |
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: Vulcain 2 Description of subject: Vulcain 2 is a European liquid-fueled cryogenic rocket engine developed by ArianeGroup to power the main stage of Ariane 5 heavy-lift launch vehicles.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Vulcain 2.1