Orbital Maneuvering System
E205214
The Orbital Maneuvering System was the Space Shuttle’s pair of rear-mounted rocket engines used for orbital insertion, adjustment, and deorbit burns.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Orbital Maneuvering System canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1835890 — 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: Orbital Maneuvering System Context triple: [Space Shuttle orbiter, propulsionType, Orbital Maneuvering System]
-
A.
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.
-
B.
Space Shuttle Main Engines
The Space Shuttle Main Engines were highly efficient, reusable liquid-fuel rocket engines that powered NASA’s Space Shuttle orbiters during launch and ascent into space.
-
C.
Apollo command and service module
The Apollo command and service module was the main crewed spacecraft used in NASA’s Apollo lunar missions, housing astronauts, life support, navigation, and propulsion systems for travel to and from the Moon.
-
D.
LC-39A
LC-39A is a historic launch pad at NASA’s Kennedy Space Center in Florida, used for Apollo Moon missions, Space Shuttle flights, and later commercial launches including SpaceX Falcon rockets.
-
E.
Manned Maneuvering Unit
The Manned Maneuvering Unit is a NASA-developed, backpack-like propulsion system that allowed astronauts to fly untethered in space during early Space Shuttle 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: Orbital Maneuvering System Target entity description: The Orbital Maneuvering System was the Space Shuttle’s pair of rear-mounted rocket engines used for orbital insertion, adjustment, and deorbit burns.
-
A.
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.
-
B.
Space Shuttle Main Engines
The Space Shuttle Main Engines were highly efficient, reusable liquid-fuel rocket engines that powered NASA’s Space Shuttle orbiters during launch and ascent into space.
-
C.
Apollo command and service module
The Apollo command and service module was the main crewed spacecraft used in NASA’s Apollo lunar missions, housing astronauts, life support, navigation, and propulsion systems for travel to and from the Moon.
-
D.
LC-39A
LC-39A is a historic launch pad at NASA’s Kennedy Space Center in Florida, used for Apollo Moon missions, Space Shuttle flights, and later commercial launches including SpaceX Falcon rockets.
-
E.
Manned Maneuvering Unit
The Manned Maneuvering Unit is a NASA-developed, backpack-like propulsion system that allowed astronauts to fly untethered in space during early Space Shuttle missions.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Space Shuttle subsystem
ⓘ
rocket engine system ⓘ spacecraft propulsion system ⓘ |
| alsoKnownAs | OMS ⓘ |
| control | commanded from the orbiter cockpit ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| engineDesignation | AJ10-190 ⓘ |
| engineType | pressure-fed rocket engine ⓘ |
| firstFlightOn | STS-1 ⓘ |
| fuel | monomethylhydrazine ⓘ |
| hasPart |
left OMS pod
ⓘ
right OMS pod ⓘ |
| heritage | derived from earlier AJ10 engine family ⓘ |
| ignitionType | hypergolic ignition ⓘ |
| integratedWith | orbiter aft fuselage structure ⓘ |
| locationRelativeToSSME | outboard of the Space Shuttle Main Engines ⓘ |
| manufacturer |
Aerojet Rocketdyne
ⓘ
surface form:
Aerojet
|
| mountingLocation |
aft fuselage of Space Shuttle orbiter
ⓘ
on each side of the vertical stabilizer ⓘ |
| numberOfEngines | 2 ⓘ |
| operator | NASA ⓘ |
| oxidizer | dinitrogen tetroxide ⓘ |
| partOf | Space Shuttle ⓘ |
| propellantType | hypergolic bipropellant ⓘ |
| replacedBy | orbital maneuvering systems on later spacecraft such as Orion and commercial vehicles ⓘ |
| restartCapability | multiple restarts in orbit ⓘ |
| retired | 2011 ⓘ |
| roleInMissionProfile |
performed deorbit burn prior to reentry
ⓘ
provided final orbital insertion after main engine cutoff ⓘ |
| safetyFeature | redundant dual-pod configuration ⓘ |
| serviceEntry | 1981 ⓘ |
| specificImpulseVacuum | about 316 seconds ⓘ |
| status | no longer in operational use ⓘ |
| storedPropellants | in tanks within each OMS pod ⓘ |
| thrustVacuum | about 26.7 kilonewtons per engine ⓘ |
| usedFor |
deorbit burns
ⓘ
major velocity change maneuvers in orbit ⓘ orbit adjustment burns ⓘ orbit circularization burns ⓘ orbital insertion burns ⓘ orbital plane change maneuvers ⓘ |
| usedOnVehicle |
Space Shuttle Atlantis
ⓘ
Space Shuttle Challenger ⓘ Space Shuttle Columbia ⓘ Space Shuttle Discovery ⓘ Space Shuttle Endeavour ⓘ |
| usedWith |
Reaction Control System
ⓘ
Space Shuttle Main Engines ⓘ
surface form:
Space Shuttle Main Engine
|
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: Orbital Maneuvering System Description of subject: The Orbital Maneuvering System was the Space Shuttle’s pair of rear-mounted rocket engines used for orbital insertion, adjustment, and deorbit burns.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.