ULA EELV-class launchers
E546988
ULA EELV-class launchers are a family of expendable rockets, including the Atlas V and Delta IV vehicles, developed by United Launch Alliance to provide reliable medium- to heavy-lift launch services for U.S. government and commercial payloads.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ULA EELV-class launchers canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5805428 — 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: ULA EELV-class launchers Context triple: [Vulcan Centaur, successorTo, ULA EELV-class launchers]
-
A.
Antares launch vehicle
The Antares launch vehicle is a medium-lift rocket primarily used to deliver cargo to the International Space Station under NASA’s Commercial Resupply Services program.
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B.
Epsilon launch vehicle
The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
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C.
HL-20 Personnel Launch System
The HL-20 Personnel Launch System was a NASA-designed lifting-body spaceplane concept from the late 20th century intended to provide a reusable, crewed vehicle for low Earth orbit missions and runway landings.
-
D.
Vanguard rocket
The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
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E.
Titan IIIC
Titan IIIC was a U.S. Air Force heavy-lift expendable launch vehicle used primarily in the 1960s and 1970s to place military and experimental payloads into orbit.
- 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: ULA EELV-class launchers Target entity description: ULA EELV-class launchers are a family of expendable rockets, including the Atlas V and Delta IV vehicles, developed by United Launch Alliance to provide reliable medium- to heavy-lift launch services for U.S. government and commercial payloads.
-
A.
Antares launch vehicle
The Antares launch vehicle is a medium-lift rocket primarily used to deliver cargo to the International Space Station under NASA’s Commercial Resupply Services program.
-
B.
Epsilon launch vehicle
The Epsilon launch vehicle is a Japanese solid-fuel rocket designed for cost-effective, small satellite launches into orbit.
-
C.
HL-20 Personnel Launch System
The HL-20 Personnel Launch System was a NASA-designed lifting-body spaceplane concept from the late 20th century intended to provide a reusable, crewed vehicle for low Earth orbit missions and runway landings.
-
D.
Vanguard rocket
The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
-
E.
Titan IIIC
Titan IIIC was a U.S. Air Force heavy-lift expendable launch vehicle used primarily in the 1960s and 1970s to place military and experimental payloads into orbit.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch vehicle family
ⓘ
rocket family ⓘ |
| capability |
geostationary transfer orbit insertion
ⓘ
interplanetary injection ⓘ low Earth orbit insertion ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| customer |
National Aeronautics and Space Administration
NERFINISHED
ⓘ
National Reconnaissance Office NERFINISHED ⓘ United States Space Force NERFINISHED ⓘ commercial satellite operators ⓘ |
| designedFor |
U.S. government payloads
ⓘ
commercial payloads ⓘ |
| designedToMeet | assured access to space requirements ⓘ |
| developer | United Launch Alliance NERFINISHED ⓘ |
| includesVehicle |
Atlas V
NERFINISHED
ⓘ
Delta IV NERFINISHED ⓘ Delta IV Heavy NERFINISHED ⓘ Delta IV Medium NERFINISHED ⓘ |
| launchServiceType |
commercial launch services
ⓘ
government launch services ⓘ |
| launchSitesUsed |
Cape Canaveral Space Force Station
NERFINISHED
ⓘ
Vandenberg Space Force Base NERFINISHED ⓘ |
| notableVehicle |
Atlas V 551
NERFINISHED
ⓘ
Delta IV Heavy NERFINISHED ⓘ |
| operator | United Launch Alliance NERFINISHED ⓘ |
| partOfProgram |
Evolved Expendable Launch Vehicle program
NERFINISHED
ⓘ
National Security Space Launch program NERFINISHED ⓘ |
| primaryRole |
heavy-lift launch vehicle
ⓘ
medium-lift launch vehicle ⓘ |
| propellantTypesUsed |
RP-1/LOX
ⓘ
liquid hydrogen/liquid oxygen ⓘ |
| reliabilityGoal | high launch success rate ⓘ |
| reusability | expendable ⓘ |
| status | operational ⓘ |
| successorFamily | Vulcan Centaur NERFINISHED ⓘ |
| typicalPayloads |
communication satellites
ⓘ
intelligence satellites ⓘ interplanetary probes ⓘ military satellites ⓘ scientific spacecraft ⓘ weather satellites ⓘ |
| upperStagesUsed |
Centaur
NERFINISHED
ⓘ
Delta Cryogenic Second Stage NERFINISHED ⓘ |
| usedFor |
NASA science missions
NERFINISHED
ⓘ
commercial satellite launches ⓘ national security space missions ⓘ |
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: ULA EELV-class launchers Description of subject: ULA EELV-class launchers are a family of expendable rockets, including the Atlas V and Delta IV vehicles, developed by United Launch Alliance to provide reliable medium- to heavy-lift launch services for U.S. government and commercial payloads.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.