MMU
E673855
Manned Maneuvering Unit
NASA spaceflight hardware
extravehicular activity equipment
propulsive backpack
MMU is a NASA-developed, self-contained jetpack-like device that allowed astronauts to move freely in space without being tethered to the spacecraft.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Manned Maneuvering Unit
ⓘ
NASA spaceflight hardware ⓘ extravehicular activity equipment ⓘ propulsive backpack ⓘ |
| abbreviationOf | Manned Maneuvering Unit NERFINISHED ⓘ |
| category |
space suit accessories
ⓘ
spacecraft maneuvering systems ⓘ |
| component |
attitude control thrusters
ⓘ
electronics and control system ⓘ translation control thrusters ⓘ twin gas tanks ⓘ |
| controlMode | six-degree-of-freedom maneuvering ⓘ |
| controlSystem | hand controllers on armrests ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| developer |
NASA
NERFINISHED
ⓘ
NASA Johnson Space Center NERFINISHED ⓘ |
| displayedAt | Smithsonian National Air and Space Museum NERFINISHED ⓘ |
| environment | microgravity ⓘ |
| firstAstronautUser | Bruce McCandless II NERFINISHED ⓘ |
| firstFlightMission | STS-41-B NERFINISHED ⓘ |
| firstFlightYear | 1984 ⓘ |
| mass |
approximately 148 kilograms
ⓘ
approximately 326 pounds ⓘ |
| maxRotationRate | about 4 degrees per second ⓘ |
| maxTranslationVelocity | about 25 feet per second ⓘ |
| mountingLocation | astronaut life-support backpack area ⓘ |
| notableEvent | first untethered spacewalk by Bruce McCandless II ⓘ |
| operatedBy | NASA astronauts NERFINISHED ⓘ |
| operatedFrom | Space Shuttle NERFINISHED ⓘ |
| operatedIn | low Earth orbit ⓘ |
| powerSource | battery powered ⓘ |
| propulsionType | compressed nitrogen gas thrusters ⓘ |
| replacedBy | Simplified Aid For EVA Rescue NERFINISHED ⓘ |
| retirementReason |
change in Shuttle mission profiles
ⓘ
safety concerns after Challenger accident ⓘ |
| safetyFeature |
built-in emergency propulsion capability
ⓘ
redundant control systems ⓘ restraint and tether attachment points ⓘ |
| status | retired ⓘ |
| thrustCapability | approximately 24 small thrusters ⓘ |
| usedFor |
astronaut self-rescue and retrieval
ⓘ
satellite capture and repair ⓘ untethered extravehicular activity ⓘ |
| usedForMissionTask |
Solar Maximum Mission satellite repair
ⓘ
retrieval of Palapa B2 satellite ⓘ retrieval of Westar VI satellite ⓘ |
| usedOnMission |
STS-41-B
NERFINISHED
ⓘ
STS-41-C NERFINISHED ⓘ STS-51-A NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.