Falcon 9 first stage
E707031
The Falcon 9 first stage is the reusable booster segment of SpaceX’s Falcon 9 rocket, designed to provide the initial thrust for launch and then return for controlled landing and refurbishment.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Falcon 9 Block 5 first stage | 1 |
| Falcon 9 Full Thrust first stage | 1 |
| Falcon 9 first stage canonical | 1 |
| Falcon 9 v1.1 first stage | 1 |
| SpaceX Falcon 9 boosters | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8055390 — 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: Falcon 9 first stage Context triple: [Merlin 1D sea-level, usedOn, Falcon 9 first stage]
-
A.
Falcon 9 first stage booster B1031
Falcon 9 first stage booster B1031 is a reusable SpaceX rocket booster notable for flying multiple orbital missions, including early reflights that demonstrated the viability of booster reusability.
-
B.
Falcon 9 first stage booster B1064
Falcon 9 first stage booster B1064 is a reusable SpaceX rocket booster that has flown multiple missions, including classified launches for the U.S. Space Force.
-
C.
Falcon 9 first stage booster B1065
Falcon 9 first stage booster B1065 is a reusable SpaceX rocket booster that has flown national security missions for the U.S. Space Force, including the USSF-67 launch.
-
D.
Falcon 9 rocket
The Falcon 9 rocket is a partially reusable, two-stage orbital launch vehicle developed by SpaceX that has revolutionized commercial spaceflight through frequent, cost-effective missions and routine booster landings.
-
E.
Starship upper stage
The Starship upper stage is the fully reusable spacecraft component of SpaceX’s Starship launch system, designed to carry crew and cargo to Earth orbit, the Moon, Mars, and beyond.
- 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: Falcon 9 first stage Target entity description: The Falcon 9 first stage is the reusable booster segment of SpaceX’s Falcon 9 rocket, designed to provide the initial thrust for launch and then return for controlled landing and refurbishment.
-
A.
Falcon 9 first stage booster B1031
Falcon 9 first stage booster B1031 is a reusable SpaceX rocket booster notable for flying multiple orbital missions, including early reflights that demonstrated the viability of booster reusability.
-
B.
Falcon 9 first stage booster B1064
Falcon 9 first stage booster B1064 is a reusable SpaceX rocket booster that has flown multiple missions, including classified launches for the U.S. Space Force.
-
C.
Falcon 9 first stage booster B1065
Falcon 9 first stage booster B1065 is a reusable SpaceX rocket booster that has flown national security missions for the U.S. Space Force, including the USSF-67 launch.
-
D.
Falcon 9 rocket
The Falcon 9 rocket is a partially reusable, two-stage orbital launch vehicle developed by SpaceX that has revolutionized commercial spaceflight through frequent, cost-effective missions and routine booster landings.
-
E.
Starship upper stage
The Starship upper stage is the fully reusable spacecraft component of SpaceX’s Starship launch system, designed to carry crew and cargo to Earth orbit, the Moon, Mars, and beyond.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
reusable launch vehicle stage
ⓘ
rocket first stage ⓘ |
| blockVariant |
Block 5
NERFINISHED
ⓘ
earlier Block 3 and Block 4 versions ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designedFor |
orbital launch missions
ⓘ
rapid turnaround and reuse ⓘ |
| engineArrangement | octaweb configuration ⓘ |
| engineType | Merlin 1D NERFINISHED ⓘ |
| firstReflightDate | 2017-03-30 ⓘ |
| firstReflightMission | SES-10 NERFINISHED ⓘ |
| firstSuccessfulLandingDate | 2015-12-21 ⓘ |
| firstSuccessfulLandingMission | Falcon 9 Flight 20 (Orbcomm-2) NERFINISHED ⓘ |
| fuelTankMaterial | aluminum-lithium alloy ⓘ |
| guidanceSystem | autonomous guidance and navigation ⓘ |
| hasComponent |
aluminum-lithium alloy tanks
ⓘ
cold gas thrusters ⓘ grid fins ⓘ interstage ⓘ landing legs ⓘ |
| landingMethod | propulsive vertical landing ⓘ |
| landingSiteType |
autonomous spaceport drone ship
ⓘ
ground-based landing zone ⓘ |
| launchSitesUsed |
Cape Canaveral Space Force Station
NERFINISHED
ⓘ
Kennedy Space Center NERFINISHED ⓘ Vandenberg Space Force Base NERFINISHED ⓘ |
| manufacturer | SpaceX NERFINISHED ⓘ |
| maxDesignReuses | up to 10 flights with minimal refurbishment for Block 5 (public target) ⓘ |
| notableFeature | first orbital-class rocket stage to achieve routine reuse ⓘ |
| numberOfEngines | 9 ⓘ |
| operator | SpaceX NERFINISHED ⓘ |
| oxidizer | liquid oxygen ⓘ |
| partOf | Falcon 9 NERFINISHED ⓘ |
| primaryFunction |
enable reuse after refurbishment
ⓘ
provide initial thrust during launch ⓘ return for controlled landing ⓘ |
| propellantType | RP-1 kerosene ⓘ |
| reusability | designed for multiple flights ⓘ |
| role | booster stage ⓘ |
| separationEvent | separates from second stage after main engine cutoff ⓘ |
| thrustAtSeaLevel | about 7.6 MN for Block 5 ⓘ |
| typicalBurnSequence |
boostback burn
ⓘ
landing burn ⓘ reentry burn ⓘ |
| usedFor |
NASA missions
ⓘ
commercial satellite launches ⓘ crew and cargo missions to the International Space Station ⓘ |
| uses |
autonomous drone ship for downrange landings
ⓘ
landing zone near launch site for RTLS landings ⓘ |
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: Falcon 9 first stage Description of subject: The Falcon 9 first stage is the reusable booster segment of SpaceX’s Falcon 9 rocket, designed to provide the initial thrust for launch and then return for controlled landing and refurbishment.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Falcon 9 Block 5 first stage
this entity surface form:
Falcon 9 Full Thrust first stage
this entity surface form:
Falcon 9 v1.1 first stage
this entity surface form:
SpaceX Falcon 9 boosters