EELV program
E363767
The EELV program is a U.S. Air Force initiative to develop and field a family of cost-effective, reliable expendable launch vehicles for military and government space missions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| EELV program canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3492861 — 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: EELV program Context triple: [Evolved Expendable Launch Vehicle program, alsoKnownAs, EELV program]
-
A.
Vanguard program
The Vanguard program was an early U.S. Navy–run satellite project during the Cold War that aimed to launch some of the first American satellites into Earth orbit as part of the International Geophysical Year.
-
B.
Alouette program
The Alouette program was a Canadian space initiative that launched some of the world’s first scientific satellites to study the ionosphere, marking Canada as an early leader in space research.
-
C.
Helios program
The Helios program was a joint NASA–German Aerospace Center mission in the 1970s that launched two probes to study the Sun at close range, setting records for both solar proximity and spacecraft speed.
-
D.
Phoenix Program
The Phoenix Program was a controversial covert counterinsurgency and intelligence operation run by the United States and South Vietnamese governments during the Vietnam War, aimed at identifying, capturing, or eliminating Viet Cong infrastructure.
-
E.
Green Proving Ground program
The Green Proving Ground program is a U.S. General Services Administration initiative that evaluates emerging building technologies in federal facilities to improve energy efficiency, reduce environmental impact, and inform wider market adoption.
- 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: EELV program Target entity description: The EELV program is a U.S. Air Force initiative to develop and field a family of cost-effective, reliable expendable launch vehicles for military and government space missions.
-
A.
Vanguard program
The Vanguard program was an early U.S. Navy–run satellite project during the Cold War that aimed to launch some of the first American satellites into Earth orbit as part of the International Geophysical Year.
-
B.
Alouette program
The Alouette program was a Canadian space initiative that launched some of the world’s first scientific satellites to study the ionosphere, marking Canada as an early leader in space research.
-
C.
Helios program
The Helios program was a joint NASA–German Aerospace Center mission in the 1970s that launched two probes to study the Sun at close range, setting records for both solar proximity and spacecraft speed.
-
D.
Phoenix Program
The Phoenix Program was a controversial covert counterinsurgency and intelligence operation run by the United States and South Vietnamese governments during the Vietnam War, aimed at identifying, capturing, or eliminating Viet Cong infrastructure.
-
E.
Green Proving Ground program
The Green Proving Ground program is a U.S. General Services Administration initiative that evaluates emerging building technologies in federal facilities to improve energy efficiency, reduce environmental impact, and inform wider market adoption.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
United States military space program
ⓘ
space launch vehicle development program ⓘ |
| abbreviation | EELV ⓘ |
| administeredBy |
Space Systems Command
ⓘ
surface form:
Space and Missile Systems Center
|
| assuredAccessRequirement | two independent launch vehicle families ⓘ |
| costReductionTarget | at least 25 percent compared to heritage systems ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| developedFor |
U.S. government civil space missions
ⓘ
U.S. military space missions ⓘ national security space missions ⓘ |
| focus |
expendable launch vehicles
ⓘ
heavy-lift launch vehicles ⓘ medium-lift launch vehicles ⓘ |
| formerOperator | Air Force Space Command ⓘ |
| fullName | Evolved Expendable Launch Vehicle program ⓘ |
| inception | 1994 ⓘ |
| keyContractor |
Boeing
ⓘ
Lockheed Martin ⓘ United Launch Alliance ⓘ |
| launchPad |
Space Launch Complex 37B
ⓘ
Space Launch Complex 3 ⓘ
surface form:
Space Launch Complex 3E
Space Launch Complex 41 ⓘ Space Launch Complex 6 ⓘ |
| launchSitesUsed |
Cape Canaveral Space Force Station
ⓘ
surface form:
Cape Canaveral Air Force Station
Vandenberg Space Force Base ⓘ
surface form:
Vandenberg Air Force Base
|
| operator |
United States Air Force
ⓘ
United States Space Force ⓘ |
| policyContext | post–Cold War launch vehicle modernization ⓘ |
| primaryGoal |
assure access to space for national security payloads
ⓘ
improve reliability of U.S. expendable launch vehicles ⓘ reduce cost of space launch for U.S. government payloads ⓘ |
| relatedProgram |
National Security Space Launch (NSSL)
ⓘ
surface form:
National Security Space Launch program
|
| replaced |
Atlas launch vehicle
ⓘ
surface form:
Atlas II launch vehicle
Delta II launch vehicle for many missions ⓘ Titan II launch vehicle ⓘ Titan IV launch vehicle ⓘ |
| resultedInVehicleFamily |
Atlas V
ⓘ
Delta IV ⓘ |
| resultedInVehicleVariant |
Atlas V 401
ⓘ
Atlas V 551 ⓘ Delta IV Heavy ⓘ Delta IV ⓘ
surface form:
Delta IV Medium
|
| servedPayloadType |
military communications satellites
ⓘ
missile warning satellites ⓘ navigation satellites ⓘ reconnaissance satellites ⓘ weather satellites ⓘ |
| sponsor |
Department of Defense
ⓘ
surface form:
United States Department of Defense
|
| successor |
National Security Space Launch (NSSL)
ⓘ
surface form:
National Security Space Launch program
|
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: EELV program Description of subject: The EELV program is a U.S. Air Force initiative to develop and field a family of cost-effective, reliable expendable launch vehicles for military and government space missions.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.