Evolved Expendable Launch Vehicle program
E73777
The Evolved Expendable Launch Vehicle program was a U.S. Air Force initiative to develop a new generation of cost-effective, reliable expendable rockets for launching military and government payloads into space.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Evolved Expendable Launch Vehicle program canonical | 13 |
| Evolved Expendable Launch Vehicle | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T588870 — 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: Evolved Expendable Launch Vehicle program Context triple: [Air Force Space Command, oversawProgram, Evolved Expendable Launch Vehicle program]
-
A.
Exploration Upper Stage
The Exploration Upper Stage is a powerful second stage designed to enhance NASA’s Space Launch System rocket’s capability to send heavier payloads and crewed missions deeper into space, including to the Moon and beyond.
-
B.
Interim Cryogenic Propulsion Stage
The Interim Cryogenic Propulsion Stage is a liquid hydrogen–liquid oxygen upper stage used on early NASA Space Launch System missions to provide orbital insertion and translunar injection capability before the introduction of a more powerful exploration upper stage.
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C.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
D.
Falcon 1 rocket
Falcon 1 rocket is a small, privately developed orbital launch vehicle created by SpaceX that became the first privately built liquid-fueled rocket to reach orbit.
-
E.
Hypersonic Technology Vehicle programs
The Hypersonic Technology Vehicle programs are DARPA-led experimental efforts to develop and test unmanned, ultra–high-speed glide vehicles capable of long-range flight within the atmosphere at hypersonic velocities.
- 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: Evolved Expendable Launch Vehicle program Target entity description: The Evolved Expendable Launch Vehicle program was a U.S. Air Force initiative to develop a new generation of cost-effective, reliable expendable rockets for launching military and government payloads into space.
-
A.
Exploration Upper Stage
The Exploration Upper Stage is a powerful second stage designed to enhance NASA’s Space Launch System rocket’s capability to send heavier payloads and crewed missions deeper into space, including to the Moon and beyond.
-
B.
Interim Cryogenic Propulsion Stage
The Interim Cryogenic Propulsion Stage is a liquid hydrogen–liquid oxygen upper stage used on early NASA Space Launch System missions to provide orbital insertion and translunar injection capability before the introduction of a more powerful exploration upper stage.
-
C.
LC-39B
LC-39B is a launch pad at NASA’s Kennedy Space Center that has supported major crewed and uncrewed space missions, including Space Shuttle flights and later Space Launch System operations.
-
D.
Falcon 1 rocket
Falcon 1 rocket is a small, privately developed orbital launch vehicle created by SpaceX that became the first privately built liquid-fueled rocket to reach orbit.
-
E.
Hypersonic Technology Vehicle programs
The Hypersonic Technology Vehicle programs are DARPA-led experimental efforts to develop and test unmanned, ultra–high-speed glide vehicles capable of long-range flight within the atmosphere at hypersonic velocities.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
United States Air Force program
ⓘ
space launch vehicle development program ⓘ |
| abbreviation | EELV ⓘ |
| alsoKnownAs |
EELV program
ⓘ
Evolved Expendable Launch Vehicle ⓘ
linked to:
Evolved Expendable Launch Vehicle program
|
| country |
United States
ⓘ
linked to:
United States of America
|
| customer |
National Aeronautics and Space Administration
ⓘ
linked to:
NASA
National Reconnaissance Office ⓘ U.S. Department of Defense ⓘ
linked to:
Department of Defense
|
| developedLaunchFamily |
Atlas V
ⓘ
Delta IV ⓘ |
| domain | space launch ⓘ |
| focus |
assured access to space
ⓘ
expendable launch vehicles ⓘ |
| fundingSource |
U.S. federal government
ⓘ
linked to:
United States government
|
| goal |
increase launch vehicle reliability
ⓘ
reduce launch costs for national security payloads ⓘ standardize launch vehicle families ⓘ |
| industryPartner |
Boeing
ⓘ
Lockheed Martin ⓘ United Launch Alliance ⓘ |
| managedBy |
Space and Missile Systems Center
ⓘ
linked to:
Space Systems Command
|
| militaryBranch | United States Air Force ⓘ |
| operator |
U.S. Space Force
ⓘ
linked to:
United States Space Force
United States Air Force ⓘ |
| purpose |
develop cost-effective expendable launch vehicles
ⓘ
improve reliability of U.S. military space launch ⓘ launch U.S. government payloads ⓘ launch U.S. military payloads ⓘ |
| rebrandedAs |
National Security Space Launch program
ⓘ
linked to:
National Security Space Launch (NSSL)
|
| regulatingAgency |
United States Department of the Air Force
ⓘ
linked to:
Department of the Air Force
|
| relatedTo |
National Security Space Launch
ⓘ
linked to:
National Security Space Launch (NSSL)
United Launch Alliance EELV-class vehicles ⓘ
linked to:
Atlas launch vehicle
|
| scope |
heavy-lift launch vehicles
ⓘ
medium-lift launch vehicles ⓘ |
| startDate | 1990s ⓘ |
| status | replaced by National Security Space Launch ⓘ |
| successor |
National Security Space Launch program
ⓘ
linked to:
National Security Space Launch (NSSL)
|
| technologyArea |
cryogenic propulsion
ⓘ
liquid-fueled rockets ⓘ |
| typeOf | national security space launch program ⓘ |
| usedFor |
geostationary communications satellites
ⓘ
missile warning satellites ⓘ navigation satellites ⓘ reconnaissance satellites ⓘ scientific spacecraft ⓘ |
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: Evolved Expendable Launch Vehicle program Description of subject: The Evolved Expendable Launch Vehicle program was a U.S. Air Force initiative to develop a new generation of cost-effective, reliable expendable rockets for launching military and government payloads into space.
Referenced by (20)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Evolved Expendable Launch Vehicle program
subject linked to:
National Security Space Launch (NSSL)
subject linked to:
National Security Space Launch (NSSL)
subject linked to:
National Security Space Launch (NSSL)
linked to: Evolved Expendable Launch Vehicle program
Long Duration Propulsive EELV Secondary Payload Adapter
→
launchVehicleFamily
→
Evolved Expendable Launch Vehicle
ⓘ
linked to: Evolved Expendable Launch Vehicle program
linked to: Evolved Expendable Launch Vehicle program
linked to: Evolved Expendable Launch Vehicle program
subject linked to:
Titan IV launch vehicle
linked to: Evolved Expendable Launch Vehicle program
linked to: Evolved Expendable Launch Vehicle program