F-1 engine
E548706
The F-1 engine is a powerful liquid-fueled rocket engine developed by Rocketdyne and famously used on NASA’s Saturn V launch vehicle to provide the immense thrust needed for Apollo Moon missions.
All labels observed (4)
| Label | Occurrences |
|---|---|
| F-1 (heritage through Rocketdyne) | 1 |
| F-1 engine canonical | 1 |
| F-1 rocket engine | 1 |
| F-1A engine | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5817657 — 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: F-1 engine Context triple: [S-IC, poweredBy, F-1 engine]
-
A.
Raptor engine
The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
-
B.
RS-68 engine
The RS-68 engine is a powerful liquid-fueled rocket engine used primarily on the Delta IV launch vehicle, known for its high thrust and simplified design for cost-effective heavy-lift missions.
-
C.
NK-33 engine
The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
-
D.
RD-180
The RD-180 is a Russian-built, two-chamber liquid-fueled rocket engine that has powered several American launch vehicles, notably variants of the Atlas V.
-
E.
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.
- 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: F-1 engine Target entity description: The F-1 engine is a powerful liquid-fueled rocket engine developed by Rocketdyne and famously used on NASA’s Saturn V launch vehicle to provide the immense thrust needed for Apollo Moon missions.
-
A.
Raptor engine
The Raptor engine is SpaceX’s next-generation full-flow staged combustion methane-fueled rocket engine designed to power the Starship launch system.
-
B.
RS-68 engine
The RS-68 engine is a powerful liquid-fueled rocket engine used primarily on the Delta IV launch vehicle, known for its high thrust and simplified design for cost-effective heavy-lift missions.
-
C.
NK-33 engine
The NK-33 engine is a Soviet-era high-performance liquid-fuel rocket engine originally developed for the N1 lunar rocket program, known for its efficiency and thrust-to-weight ratio.
-
D.
RD-180
The RD-180 is a Russian-built, two-chamber liquid-fueled rocket engine that has powered several American launch vehicles, notably variants of the Atlas V.
-
E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | liquid-fueled rocket engine ⓘ |
| associatedUpgradeStudy |
F-1A engine
ⓘ
linked to:
F-1 engine
|
| chamberPressure | about 70 bar ⓘ |
| combustionChambers | 1 ⓘ |
| contractor | North American Aviation ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| cycleType | gas-generator cycle ⓘ |
| developedFor |
Saturn V launch vehicle
ⓘ
linked to:
Saturn V
|
| diameter | about 3.7 meters ⓘ |
| dryMass | about 8,400 kilograms ⓘ |
| exhaust | kerosene-oxygen combustion products ⓘ |
| firstFlight |
Saturn V Apollo 4 mission
ⓘ
linked to:
Saturn V
|
| firstFlightDate | 1967-11-09 ⓘ |
| fuel | RP-1 kerosene ⓘ |
| gimbalCapability | engine gimbaling for thrust vector control ⓘ |
| height | about 5.8 meters ⓘ |
| heritage | influenced later large kerosene-oxygen engine designs ⓘ |
| ignitionSystem | pyrotechnic ignition ⓘ |
| laterContractor | Rockwell International ⓘ |
| legacy | iconic symbol of the Apollo-era heavy-lift capability ⓘ |
| manufacturer |
Rocketdyne
ⓘ
linked to:
Pratt & Whitney Rocketdyne
|
| notableFeature | largest single-chamber liquid-fueled rocket engine ever flown ⓘ |
| nozzles | 1 ⓘ |
| numberPerSaturnVFirstStage | 5 ⓘ |
| operator |
NASA Marshall Space Flight Center
ⓘ
linked to:
Marshall Space Flight Center
|
| oxidizer | liquid oxygen ⓘ |
| primaryRole | first-stage booster engine ⓘ |
| programStartPeriod | late 1950s ⓘ |
| propellantType | liquid fuel ⓘ |
| specificImpulseSeaLevel | about 263 seconds ⓘ |
| specificImpulseVacuum | about 304 seconds ⓘ |
| stageUsedOn |
Saturn V S-IC first stage
ⓘ
linked to:
Saturn V first stage (S-IC)
|
| status | retired ⓘ |
| testLocation |
Edwards Air Force Base
ⓘ
Marshall Space Flight Center test stands ⓘ |
| thrustAtSeaLevel |
about 1.5 million pounds-force
ⓘ
about 6.77 MN ⓘ |
| thrustInVacuum | about 7.7 MN ⓘ |
| usedBy | NASA ⓘ |
| usedForMissionType | Moon missions ⓘ |
| usedInLaunchVehicleFamily | Saturn family ⓘ |
| usedInMission |
Apollo 11
ⓘ
Apollo 17 ⓘ Apollo 8 ⓘ |
| usedInProgram | Apollo program ⓘ |
| usedOn |
Saturn V first stage
ⓘ
linked to:
Saturn V first stage (S-IC)
|
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: F-1 engine Description of subject: The F-1 engine is a powerful liquid-fueled rocket engine developed by Rocketdyne and famously used on NASA’s Saturn V launch vehicle to provide the immense thrust needed for Apollo Moon missions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: F-1 engine
linked to: F-1 engine
linked to: F-1 engine