Merlin 1C
E17817
Merlin 1C is a liquid-fueled rocket engine developed by SpaceX for use on early Falcon rockets, notable for its role in pioneering the company’s orbital launch capabilities.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Merlin 1C canonical | 7 |
| Merlin 1C Vacuum | 1 |
| Merlin engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T146552 — 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: Merlin 1C Context triple: [Falcon 1, firstStageEngine, Merlin 1C]
-
A.
Merlin 1A
Merlin 1A is the first-generation liquid-fueled rocket engine developed by SpaceX for early Falcon 1 launches.
-
B.
ISOLDE
ISOLDE is a CERN facility dedicated to producing and studying beams of radioactive isotopes for research in nuclear physics, astrophysics, and related fields.
-
C.
Oberon
Oberon is a modular, type-safe systems programming language designed by Niklaus Wirth as a streamlined successor to Pascal and Modula-2, emphasizing simplicity and efficiency.
-
D.
Philortyx
Philortyx is a genus of New World quails known for their ground-dwelling habits and occurrence in scrub and grassland habitats of the Americas.
-
E.
CP-140 Aurora
The CP-140 Aurora is a Canadian long-range maritime patrol and anti-submarine warfare aircraft based on the Lockheed P-3 Orion airframe and used primarily for surveillance and reconnaissance missions.
- 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: Merlin 1C Target entity description: Merlin 1C is a liquid-fueled rocket engine developed by SpaceX for use on early Falcon rockets, notable for its role in pioneering the company’s orbital launch capabilities.
-
A.
Merlin 1A
Merlin 1A is the first-generation liquid-fueled rocket engine developed by SpaceX for early Falcon 1 launches.
-
B.
ISOLDE
ISOLDE is a CERN facility dedicated to producing and studying beams of radioactive isotopes for research in nuclear physics, astrophysics, and related fields.
-
C.
Oberon
Oberon is a modular, type-safe systems programming language designed by Niklaus Wirth as a streamlined successor to Pascal and Modula-2, emphasizing simplicity and efficiency.
-
D.
Philortyx
Philortyx is a genus of New World quails known for their ground-dwelling habits and occurrence in scrub and grassland habitats of the Americas.
-
E.
CP-140 Aurora
The CP-140 Aurora is a Canadian long-range maritime patrol and anti-submarine warfare aircraft based on the Lockheed P-3 Orion airframe and used primarily for surveillance and reconnaissance missions.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf | liquid-fueled rocket engine ⓘ |
| chamberPressure_bar | about 69 ⓘ |
| combustionChamberMaterial | ablatively lined chamber ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designGoal |
low-cost production
ⓘ
reusability-ready architecture ⓘ |
| developer | SpaceX ⓘ |
| engineCycle | gas-generator cycle ⓘ |
| era | early 21st century ⓘ |
| firstFlightVehicle |
Falcon 1 rocket
ⓘ
surface form:
Falcon 1 Flight 4
|
| firstSuccessfulOrbitalLaunchDate | 2008-09-28 ⓘ |
| firstSuccessfulOrbitalLaunchVehicle |
Falcon 1 rocket
ⓘ
surface form:
Falcon 1
|
| fuel | RP-1 kerosene ⓘ |
| fuelPumpDrive | gas-generator exhaust ⓘ |
| gimbalCapability | yes ⓘ |
| manufacturer | SpaceX ⓘ |
| notableFor | enabling SpaceX’s first successful orbital launch ⓘ |
| nozzleMaterial | niobium alloy for vacuum variant ⓘ |
| oxidizer | liquid oxygen ⓘ |
| primaryUse | orbital launch vehicles ⓘ |
| propellantType |
RP-1 kerosene
ⓘ
liquid oxygen ⓘ |
| propulsionType | chemical rocket ⓘ |
| replacedEngine | Merlin 1A ⓘ |
| specificImpulseSeaLevel_s | about 275 ⓘ |
| specificImpulseVacuum_s | about 304 ⓘ |
| status | retired ⓘ |
| successor | Merlin 1D ⓘ |
| throttleCapability | limited ⓘ |
| thrustSeaLevel_kN | about 420 ⓘ |
| thrustVacuum_kN | about 480 ⓘ |
| thrustVectorControl | gimbaled engine mount ⓘ |
| turbopumpType | single-shaft turbopump ⓘ |
| usedByOrganization | SpaceX ⓘ |
| usedForMissionType |
orbital launch
ⓘ
payload delivery to low Earth orbit ⓘ |
| usedForStage |
first stage
ⓘ
second stage vacuum variant ⓘ |
| usedInClusterConfiguration |
Falcon 9 rocket
ⓘ
surface form:
Falcon 9 first stage 9-engine cluster
|
| usedInProgram | Falcon program ⓘ |
| usedOnVehicle |
Falcon 1 rocket
ⓘ
surface form:
Falcon 1
Falcon 9 rocket ⓘ
surface form:
Falcon 9 v1.0
Falcon 9 rocket ⓘ
surface form:
Falcon 9 v1.1 prototype stages
|
| vacuumVariantName |
Merlin 1C
self-linksurface differs
ⓘ
surface form:
Merlin 1C Vacuum
|
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: Merlin 1C Description of subject: Merlin 1C is a liquid-fueled rocket engine developed by SpaceX for use on early Falcon rockets, notable for its role in pioneering the company’s orbital launch capabilities.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Falcon 1
this entity surface form:
Merlin 1C Vacuum
this entity surface form:
Merlin engine