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.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
NASA spaceflight hardware
ⓘ
astronaut propulsion unit ⓘ extravehicular activity equipment ⓘ |
| abbreviation | MMU NERFINISHED ⓘ |
| alsoKnownAs |
MMU
NERFINISHED
ⓘ
Manned Maneuvering Unit backpack NERFINISHED ⓘ |
| attachedTo | Extravehicular Mobility Unit spacesuit NERFINISHED ⓘ |
| 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 of America
ⓘ
surface form:
United States
|
| developedBy |
Martin Marietta
NERFINISHED
ⓘ
NASA NERFINISHED ⓘ |
| displayLocation | Smithsonian National Air and Space Museum NERFINISHED ⓘ |
| environmentOfUse | low Earth orbit ⓘ |
| feature |
multiple attitude-control thrusters
ⓘ
self-contained life-support-independent propulsion system ⓘ translation-control thrusters ⓘ |
| firstUsedInMission | STS-41-B NERFINISHED ⓘ |
| 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 NERFINISHED ⓘ |
| operatedFrom | Space Shuttle orbiter NERFINISHED ⓘ |
| operationalEra | early 1980s ⓘ |
| operator | NASA Johnson Space Center NERFINISHED ⓘ |
| poweredBy | compressed nitrogen gas ⓘ |
| propulsionType | cold-gas thrusters ⓘ |
| replacedBy | Simplified Aid for EVA Rescue NERFINISHED ⓘ |
| retiredBy | NASA NERFINISHED ⓘ |
| safetyFeature |
automatic attitude-hold capability
ⓘ
redundant thruster systems ⓘ |
| status | retired ⓘ |
| tetherRequirement | no tether required during normal operation ⓘ |
| usedBy | NASA astronauts NERFINISHED ⓘ |
| usedFor |
extravehicular activity
ⓘ
maneuvering freely in orbit ⓘ untethered spacewalks ⓘ |
| usedInMission |
STS-41-B
NERFINISHED
ⓘ
STS-41-C NERFINISHED ⓘ STS-51-A NERFINISHED ⓘ |
| wornOn | astronaut’s back ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.