Inertial Upper Stage
E205225
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Inertial Upper Stage canonical | 8 |
How this entity was disambiguated
This entity first appeared as the object of triple T1836007 — 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: Inertial Upper Stage Context triple: [STS-26, payload, Inertial 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.
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.
Agena Target Vehicle
The Agena Target Vehicle was an unmanned spacecraft used during NASA's Gemini program to practice rendezvous and docking maneuvers in Earth orbit.
-
D.
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.
-
E.
S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
- 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: Inertial Upper Stage Target entity description: 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.
-
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.
Agena Target Vehicle
The Agena Target Vehicle was an unmanned spacecraft used during NASA's Gemini program to practice rendezvous and docking maneuvers in Earth orbit.
-
D.
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.
-
E.
S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch vehicle stage
ⓘ
upper stage rocket ⓘ |
| alternativeName | IUS ⓘ |
| controlSystem | hydrazine reaction control system ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| deployedFrom |
Space Shuttle orbiter
ⓘ
surface form:
Space Shuttle payload bay
Titan III upper stack ⓘ Titan IV upper stack ⓘ |
| developedBy | Boeing ⓘ |
| developedFor | United States Air Force ⓘ |
| diameter | approximately 2.8 meters ⓘ |
| firstFlightDate | 1982-10-30 ⓘ |
| firstFlightMission |
STS-5 with Columbia
ⓘ
surface form:
STS-5
|
| firstFlightVehicle | Space Shuttle Columbia ⓘ |
| firstStageMotor | SRM-1 ⓘ |
| firstStagePropellant | solid propellant ⓘ |
| guidanceMethod | strapdown inertial navigation ⓘ |
| hasGuidanceSystem | inertial guidance system ⓘ |
| launchEnvironment | deployed from low Earth orbit ⓘ |
| launchMass | approximately 14,000 kilograms ⓘ |
| length | approximately 5.2 meters ⓘ |
| manufacturer |
Boeing
ⓘ
Boeing Defense, Space & Security ⓘ |
| missionProfile | two-burn transfer to higher energy orbit ⓘ |
| numberOfStages | 2 ⓘ |
| operatedBy | United States Air Force ⓘ |
| primaryFunction | orbit-raising upper stage ⓘ |
| propulsionType | solid rocket motor ⓘ |
| retirementPeriod | early 2000s ⓘ |
| secondStageMotor | SRM-2 ⓘ |
| secondStagePropellant | solid propellant ⓘ |
| stageConfiguration | two-stage solid-fueled upper stage ⓘ |
| status | retired ⓘ |
| successor |
Centaur
ⓘ
surface form:
Centaur G
Payload Assist Module ⓘ |
| usedByAgency |
NASA
ⓘ
Department of Defense ⓘ
surface form:
United States Department of Defense
|
| usedForOrbitTransfer |
geostationary transfer orbit
ⓘ
high Earth orbit ⓘ interplanetary trajectories ⓘ |
| usedOnMission |
DSP early warning satellites
ⓘ
Galileo spacecraft ⓘ
surface form:
Galileo Jupiter orbiter
Magellan spacecraft ⓘ
surface form:
Magellan Venus orbiter
Milstar communications satellites ⓘ Global Positioning System satellites ⓘ
surface form:
Navstar GPS satellites
TDRS communications satellites ⓘ |
| usedWithLaunchVehicle |
Space Shuttle
ⓘ
Titan III ⓘ Titan IV ⓘ |
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: Inertial Upper Stage Description of subject: 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.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.