Titan IV launch vehicle

E573966

expendable launch vehicle heavy-lift launch vehicle

The Titan IV launch vehicle was a heavy-lift expendable rocket used primarily by the United States Air Force to place large military and intelligence payloads into orbit from the late Cold War through the early 2000s.

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All labels observed (4)

Label	Occurrences
Titan IV program	5
Titan IV launch vehicle canonical	3
Titan IV rocket	3
Titan IV launch program	1

How this entity was disambiguated

This entity first appeared as the object of triple T6066745 — 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: Titan IV launch vehicle
Context triple: [LR-87, developedFor, Titan IV launch vehicle]

A. Titan II launch vehicle
The Titan II launch vehicle was a U.S. two-stage liquid-fueled rocket originally derived from an intercontinental ballistic missile and later used to launch Gemini crewed spacecraft and various satellites into orbit.
B. 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.
C. Atlas launch vehicle
The Atlas launch vehicle is an American rocket family originally developed as an intercontinental ballistic missile that became a key workhorse for launching satellites and crewed spacecraft during the early space age.
D. 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.
E. Titan IIIA
Titan IIIA was an early American expendable launch vehicle developed in the 1960s as part of the Titan rocket family, primarily used for testing upper stages and technologies for later Titan III variants.
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: Titan IV launch vehicle
Target entity description: The Titan IV launch vehicle was a heavy-lift expendable rocket used primarily by the United States Air Force to place large military and intelligence payloads into orbit from the late Cold War through the early 2000s.

A. Titan II launch vehicle
The Titan II launch vehicle was a U.S. two-stage liquid-fueled rocket originally derived from an intercontinental ballistic missile and later used to launch Gemini crewed spacecraft and various satellites into orbit.
B. 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.
C. Atlas launch vehicle
The Atlas launch vehicle is an American rocket family originally developed as an intercontinental ballistic missile that became a key workhorse for launching satellites and crewed spacecraft during the early space age.
D. 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.
E. Titan IIIA
Titan IIIA was an early American expendable launch vehicle developed in the 1960s as part of the Titan rocket family, primarily used for testing upper stages and technologies for later Titan III variants.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	expendable launch vehicle ⓘ heavy-lift launch vehicle ⓘ
category	Cold War-era space launch vehicle ⓘ military space launch system ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
designGoal	to launch the heaviest U.S. national security payloads ⓘ
family	Titan rocket family ⓘ
launchCapability	heavy-lift to low Earth orbit ⓘ launch to geosynchronous transfer orbit ⓘ
launchConfiguration	optional upper stage ⓘ two-stage core ⓘ
launchEnvironment	equatorial and geosynchronous orbits from Cape Canaveral ⓘ polar orbits from Vandenberg ⓘ
launchSites	Cape Canaveral Air Force Station ⓘ linked to: Cape Canaveral Space Force Station Vandenberg Air Force Base ⓘ linked to: Vandenberg Space Force Base
launchVehicleRole	strategic national security launcher ⓘ
manufacturer	Lockheed Martin ⓘ
notablePayloadType	National Reconnaissance Office payloads ⓘ military communications satellites ⓘ missile warning satellites ⓘ reconnaissance satellites ⓘ
operator	United States Air Force ⓘ United States Department of Defense ⓘ linked to: Department of Defense
orbitTypesSupported	geosynchronous orbit ⓘ geosynchronous transfer orbit ⓘ low Earth orbit ⓘ
predecessor	Titan III ⓘ
primaryEraOfUse	1990s ⓘ early 2000s ⓘ late Cold War ⓘ linked to: Cold War
propellantType	liquid-fueled core stages ⓘ solid rocket boosters ⓘ
propulsionType	hypergolic liquid propellants in core stages ⓘ solid propellant in strap-on boosters ⓘ
reusability	non-reusable ⓘ
status	retired ⓘ
successor	Atlas V ⓘ Delta IV ⓘ Evolved Expendable Launch Vehicle program ⓘ
upperStageOptions	Centaur upper stage ⓘ Inertial Upper Stage ⓘ
usedBy	United States Air Force ⓘ
usedFor	interplanetary missions ⓘ launching intelligence payloads ⓘ launching large military payloads ⓘ placing payloads into Earth orbit ⓘ
user	National Reconnaissance Office ⓘ National Security Space Program ⓘ linked to: National Security Space Launch (NSSL)

How these facts were elicited