Merlin 1A
E17423
Merlin 1A is the first-generation liquid-fueled rocket engine developed by SpaceX for early Falcon 1 launches.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Merlin 1A canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T146551 — 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 1A Context triple: [Falcon 1, firstStageEngine, Merlin 1A]
-
A.
ISOLDE
ISOLDE is a CERN facility dedicated to producing and studying beams of radioactive isotopes for research in nuclear physics, astrophysics, and related fields.
-
B.
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.
-
C.
Maia
Maia is a figure from Greek mythology, one of the Pleiades and the mother of the god Hermes.
-
D.
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.
-
E.
Voyager KC2
Voyager KC2 is an Airbus A330-based multi-role tanker transport aircraft used by the Royal Air Force for air-to-air refuelling and strategic airlift operations.
- 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 1A Target entity description: Merlin 1A is the first-generation liquid-fueled rocket engine developed by SpaceX for early Falcon 1 launches.
-
A.
ISOLDE
ISOLDE is a CERN facility dedicated to producing and studying beams of radioactive isotopes for research in nuclear physics, astrophysics, and related fields.
-
B.
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.
-
C.
Maia
Maia is a figure from Greek mythology, one of the Pleiades and the mother of the god Hermes.
-
D.
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.
-
E.
Voyager KC2
Voyager KC2 is an Airbus A330-based multi-role tanker transport aircraft used by the Royal Air Force for air-to-air refuelling and strategic airlift operations.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
liquid-fueled rocket engine
ⓘ
rocket engine ⓘ |
| burnType | storable kerosene and cryogenic oxygen ⓘ |
| chamberPressure | about 6 MPa ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designedBy |
SpaceX propulsion team
ⓘ
linked to:
SpaceX
|
| designedForReusability | no ⓘ |
| developer | SpaceX ⓘ |
| engineCycle | gas-generator cycle ⓘ |
| failureCauseOnFirstFlight | fuel leak and fire ⓘ |
| failureOnFirstFlight | yes ⓘ |
| family |
Merlin engine family
ⓘ
linked to:
Rolls-Royce Merlin
|
| firstFlightDate | 2006-03-24 ⓘ |
| firstFlightVehicle |
Falcon 1 Flight 1
ⓘ
linked to:
Falcon 1 rocket
|
| fuel | RP-1 ⓘ |
| generation | first-generation Merlin engine ⓘ |
| gimbalCapability | yes ⓘ |
| manufacturer | SpaceX ⓘ |
| mountingConfiguration | single-engine first stage ⓘ |
| nozzleExtensionCooling | ablative cooling ⓘ |
| oxidizer | liquid oxygen ⓘ |
| primaryStructureMaterial | metallic alloys ⓘ |
| propellantType | liquid ⓘ |
| replacedBy | Merlin 1C ⓘ |
| specificImpulseSeaLevel | about 256 s ⓘ |
| specificImpulseVacuum | about 304 s ⓘ |
| status | retired ⓘ |
| successorEngineUsedOnFalcon1 | Merlin 1C ⓘ |
| throttleCapability | limited ⓘ |
| thrustSeaLevel | about 320 kN ⓘ |
| thrustSeaLevel_lbf | about 71,000 lbf ⓘ |
| thrustVacuum | about 340 kN ⓘ |
| thrustVacuum_lbf | about 76,000 lbf ⓘ |
| usedFor | orbital launch vehicle propulsion ⓘ |
| usedInProgram |
Falcon 1 program
ⓘ
linked to:
Falcon 1 rocket
|
| usedOn |
Falcon 1
ⓘ
linked to:
Falcon 1 rocket
|
| usedOnStage |
Falcon 1 first stage
ⓘ
linked to:
Falcon 1 rocket
|
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 1A Description of subject: Merlin 1A is the first-generation liquid-fueled rocket engine developed by SpaceX for early Falcon 1 launches.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.