Delta IV upper stage
E272871
The Delta IV upper stage is the cryogenic second stage of the Delta IV launch vehicle, designed to perform precise orbital insertions using liquid hydrogen and liquid oxygen propellants.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Delta Cryogenic Second Stage | 1 |
| Delta IV upper stage canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2494726 — 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: Delta IV upper stage Context triple: [RL10, usedOn, Delta IV upper stage]
-
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.
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.
-
C.
Inertial Upper Stage
The Inertial Upper Stage was a two-stage, solid-fueled rocket used primarily with the Space Shuttle and Titan launch vehicles to boost satellites from low Earth orbit to higher orbits such as geostationary transfer orbit.
-
D.
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.
-
E.
Delta IV Heavy
Delta IV Heavy is a powerful American expendable heavy-lift launch vehicle developed by United Launch Alliance, known for carrying large payloads to orbit and supporting national security and scientific missions.
- 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: Delta IV upper stage Target entity description: The Delta IV upper stage is the cryogenic second stage of the Delta IV launch vehicle, designed to perform precise orbital insertions using liquid hydrogen and liquid oxygen propellants.
-
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.
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.
-
C.
Inertial Upper Stage
The Inertial Upper Stage was a two-stage, solid-fueled rocket used primarily with the Space Shuttle and Titan launch vehicles to boost satellites from low Earth orbit to higher orbits such as geostationary transfer orbit.
-
D.
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.
-
E.
Delta IV Heavy
Delta IV Heavy is a powerful American expendable heavy-lift launch vehicle developed by United Launch Alliance, known for carrying large payloads to orbit and supporting national security and scientific missions.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
cryogenic rocket stage
ⓘ
rocket upper stage ⓘ |
| abbreviation | DCSS ⓘ |
| compatibleWith |
Delta IV Heavy
ⓘ
Delta IV ⓘ
surface form:
Delta IV Medium
|
| controlSystem | hydrazine reaction control system ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designedFor | high-precision orbital maneuvers ⓘ |
| engineManufacturer | Aerojet Rocketdyne ⓘ |
| engineType | expander cycle ⓘ |
| family |
Delta rocket
ⓘ
surface form:
Delta rocket family
|
| guidanceType | inertial guidance ⓘ |
| hasDesignation | Delta Cryogenic Second Stage ⓘ |
| hasFeature |
attitude control system
ⓘ
avionics module ⓘ extendable nozzle ⓘ hydrogen tank ⓘ insulated propellant tanks ⓘ oxygen tank ⓘ restartable engine ⓘ |
| isCryogenic | true ⓘ |
| launchProvider | United Launch Alliance ⓘ |
| launchVehicleFamily | Delta IV ⓘ |
| manufacturer |
Boeing
ⓘ
United Launch Alliance ⓘ |
| missionRole | final orbit insertion stage ⓘ |
| oxidizer | liquid oxygen ⓘ |
| partOf |
Delta IV
ⓘ
surface form:
Delta IV launch vehicle
|
| propellant |
liquid hydrogen
ⓘ
liquid oxygen ⓘ |
| propulsionType | liquid-fueled rocket engine ⓘ |
| stageNumber | second stage ⓘ |
| status | operational ⓘ |
| usedFor |
geostationary transfer orbit insertion
ⓘ
orbit circularization ⓘ orbital insertion ⓘ payload deployment ⓘ |
| usedInMissionType |
U.S. government launches
ⓘ
commercial satellite launches ⓘ interplanetary missions ⓘ national security space launches ⓘ |
| usedOn |
Delta IV Heavy
ⓘ
Delta IV ⓘ
surface form:
Delta IV M+(4,2)
Delta IV ⓘ
surface form:
Delta IV M+(5,2)
|
| usesEngine |
RL10
ⓘ
surface form:
RL10B-2
|
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: Delta IV upper stage Description of subject: The Delta IV upper stage is the cryogenic second stage of the Delta IV launch vehicle, designed to perform precise orbital insertions using liquid hydrogen and liquid oxygen propellants.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.