MMU backpack
E673857
The MMU backpack is a self-contained, astronaut-worn propulsion unit that allowed untethered spacewalks for maneuvering freely in orbit during Space Shuttle missions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MMU backpack canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7574438 — 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: MMU backpack Context triple: [Manned Maneuvering Unit, alsoKnownAs, MMU backpack]
-
A.
MMU
MMU is a large public university in Manchester, England, known for its diverse academic programs and strong links with industry and the creative sectors.
-
B.
MOLLE
MOLLE is a military load-bearing equipment system that uses a webbing-based modular design to attach and customize pouches and gear on vests, packs, and belts.
-
C.
Stringbag
Stringbag was the affectionate nickname given to the British Fairey Swordfish biplane torpedo bomber, renowned for its outdated appearance yet remarkable effectiveness in World War II naval operations.
-
D.
Modular Tactical Vest
The Modular Tactical Vest is a U.S. military body armor system designed to improve protection, modularity, and load-carrying capability for soldiers in combat.
-
E.
MMK
MMK is the three-letter ISO 4217 currency code for the Myanmar kyat, the official currency of Myanmar.
- 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: MMU backpack Target entity description: The MMU backpack is a self-contained, astronaut-worn propulsion unit that allowed untethered spacewalks for maneuvering freely in orbit during Space Shuttle missions.
-
A.
MMU
MMU is a large public university in Manchester, England, known for its diverse academic programs and strong links with industry and the creative sectors.
-
B.
MOLLE
MOLLE is a military load-bearing equipment system that uses a webbing-based modular design to attach and customize pouches and gear on vests, packs, and belts.
-
C.
Stringbag
Stringbag was the affectionate nickname given to the British Fairey Swordfish biplane torpedo bomber, renowned for its outdated appearance yet remarkable effectiveness in World War II naval operations.
-
D.
Modular Tactical Vest
The Modular Tactical Vest is a U.S. military body armor system designed to improve protection, modularity, and load-carrying capability for soldiers in combat.
-
E.
MMK
MMK is the three-letter ISO 4217 currency code for the Myanmar kyat, the official currency of Myanmar.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
NASA spaceflight hardware
ⓘ
astronaut propulsion unit ⓘ extravehicular activity equipment ⓘ |
| abbreviation | MMU ⓘ |
| alsoKnownAs |
MMU
ⓘ
Manned Maneuvering Unit backpack ⓘ
linked to:
Manned Maneuvering Unit
|
| attachedTo |
Extravehicular Mobility Unit spacesuit
ⓘ
linked to:
Shuttle Extravehicular Mobility Unit
|
| capability |
attitude control in three axes
ⓘ
returning to the Space Shuttle without a safety tether ⓘ translation in three dimensions ⓘ |
| category |
space suit component
ⓘ
spacecraft maneuvering system ⓘ |
| controlMethod | hand controllers ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| developedBy |
Martin Marietta
ⓘ
NASA ⓘ |
| displayLocation | Smithsonian National Air and Space Museum ⓘ |
| environmentOfUse | low Earth orbit ⓘ |
| feature |
multiple attitude-control thrusters
ⓘ
self-contained life-support-independent propulsion system ⓘ translation-control thrusters ⓘ |
| firstUsedInMission |
STS-41-B
ⓘ
linked to:
STS-41B
|
| mass | approximately 148 kilograms ⓘ |
| mountedOn | back of the EMU primary life support system ⓘ |
| notableUse |
retrieval of Palapa B2 communications satellite
ⓘ
retrieval of Westar VI communications satellite ⓘ retrieval of the Solar Maximum Mission satellite ⓘ |
| operatedDuring |
Space Shuttle program
ⓘ
linked to:
NASA Space Shuttle program
|
| operatedFrom | Space Shuttle orbiter ⓘ |
| operationalEra | early 1980s ⓘ |
| operator |
NASA Johnson Space Center
ⓘ
linked to:
Johnson Space Center
|
| poweredBy | compressed nitrogen gas ⓘ |
| propulsionType | cold-gas thrusters ⓘ |
| replacedBy |
Simplified Aid for EVA Rescue
ⓘ
linked to:
Manned Maneuvering Unit
|
| retiredBy | NASA ⓘ |
| safetyFeature |
automatic attitude-hold capability
ⓘ
redundant thruster systems ⓘ |
| status | retired ⓘ |
| tetherRequirement | no tether required during normal operation ⓘ |
| usedBy |
NASA astronauts
ⓘ
linked to:
NASA Astronaut Corps
|
| usedFor |
extravehicular activity
ⓘ
maneuvering freely in orbit ⓘ untethered spacewalks ⓘ |
| usedInMission |
STS-41-B
ⓘ
linked to:
STS-41B
STS-41-C ⓘ
linked to:
STS-41C
STS-51-A ⓘ
linked to:
STS-51A
|
| wornOn | astronaut’s back ⓘ |
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: MMU backpack Description of subject: The MMU backpack is a self-contained, astronaut-worn propulsion unit that allowed untethered spacewalks for maneuvering freely in orbit during Space Shuttle missions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.