| M | Mach number
|
| M | mega-
|
| M | million
|
| M | number of revolutions required for the rendezvous
|
| M&A | monitor and alarm
|
| M&C | maintenance and checkout
|
| M&F | manufacturing and facilities
|
| M&I | management and integration
|
| M&L | maintenance and logistics
|
| M&M | materials and maintenance
|
| M&O | maintenance and operations
|
| M&P | Materials and Processes (Engineering)
|
| M&P | materials and processes
|
| M&R | maintenance and refurbishment
|
| M&R | maintenance and repair
|
| M&RF | maintenance and refurbishing facility
|
| M&S | maintenance and security
|
| M&S | mapping and surveying
|
| M- | time in days before move operations
|
| M-M-L-S | model-modes-loads-stresses
|
| M/E | mechanical/electrical
|
| M/F | maintenance factor
|
| M/I | minimum impulse
|
| M/L | maintenance loop
|
| M/L | manual local
|
| M/LR | maintenance loop recorder
|
| M/M | maximum and minimum
|
| M/P | main parachute
|
| M/P | mass properties
|
| M/PHE | material or personnel handling equipment
|
| M/R | mixture ratio (fuel to oxidizer)
|
| M/S | main stage
|
| M/S | measurement stimuli
|
| M/SCI | mission/safety-critical item
|
| M/U | mockup
|
| M/W | make work
|
| M2P2 | multimission production plan
|
| M50 | Aries mean of 1950, Cartesian coordinates
|
| MA | Mercury-Atlas
|
| MA | maintenance ability
|
| MA | maintenance advisor
|
| MA | master alarm
|
| MA | material authorization
|
| MA | metabolic analyzer
|
| MA | mike amplifier
|
| MA | missed approach
|
| MA | mission analysis
|
| MA | multiple access
|
| MA&P | maintenance analysis and planning
|
| MA&SE | mission analysis and system engineering
|
| MA&T | manufacturing assembly and test
|
| MAA | Mathematical Association of America
|
| MAA | maximum authorized altitude
|
| MAAB | Materials Application Advisory Board
|
| MAAS | mission area analysis system
|
| MAB | Materials Advisory Board
|
| MAB | Materials Applications Board
|
| MAB | Missile Assembly Building
|
| MAB | master acquisition bus
|
| MAB | mechanical automation breadboard
|
| MAC | Maintenance Advisory Committee
|
| MAC | Material Air Command
|
| MAC | Military Airlift Command
|
| MAC | maximum allowable concentration
|
| MAC | mean aerodynamic chord
|
| MAC | media access control
|
| MAC | months after contract
|
| MAC | multiaccess computer
|
| MAC | multimission applications concept
|
| MACDS | monitor and control display system
|
| MACE | mechanical antenna control electronics
|
| MACE | missile and control equipment
|
| MACO | major assembly checkout
|
| MACRO | merge and correlate recorded output
|
| MACS | management and control system
|
| MAD | Madrid, Spain (STDN)
|
| MAD | maintenance analysis data
|
| MAD | momentum accumulation and dumping
|
| MADC | multiplexer analog-to-digital converter
|
| MADCS | modular attitude determination and control system
|
| MADRE | manufacturing data retrieval (system)
|
| MADS | modular auxiliary data system
|
| MADS | monitor and control display system
|
| MAEP | minimum autoland entry point
|
| MAF | Michoud Assembly Facility
|
| MAF | main assembly fixture
|
| MAF | manpower authorization file
|
| MAF | mixed amine fuel
|
| MAGSAT | magnetometer satellite
|
| MAI | machine-aided indexing
|
| MAICO | manufacturing, assembly, installation, and checkout
|
| MAIDS | management automated information display system
|
| MAIDS | multipurpose automatic inspection and diagnostic system
|
| MAIL | Mockup and Integration Laboratory
|
| MAIR | manufacturing and inspection record
|
| MAL | material allowance list
|
| MAL | mobile airlock
|
| MAL | model assembly list
|
| MALT | model assembly list transmittal
|
| MAN | microwave aerospace navigation
|
| MANTECH | manufacturing technology
|
| MAOT | maximum allowable operating time
|
| MAP | maintenance analysis program
|
| MAP | manufacturing automation protocol
|
| MAP | measurement allocation plan
|
| MAP | message acceptance pulse
|
| MAP | missed approach point
|
| MAP | mission application program
|
| MAPOLE | magnetic dipole spark transmitter
|
| MAPS | measurement of air pollution from satellites
|
| MAPTIS | materials and processes technical information system
|
| MAR | maintenance and refurbishment
|
| MAR | memory address register
|
| MAR | mid-deck accommodations rack
|
| MARP | Markov analysis and reliability prediction
|
| MARRS | mission analysis and reconfiguration requirements system
|
| MARS | MCC automated reconfiguration system
|
| MARS | Martin automatic reporting system
|
| MARS | manned astronautical research station
|
| MARS | modular airborne recorder system
|
| MAS | MAST approval sheet
|
| MAS | measurement approval sheet
|
| MAS | medium-altitude sensor
|
| MASDC | Military Aircraft Storage and Disposition Center
|
| MASER | microwave amplification through stimulated eadiation
|
| MASSPO | Manned Space Flight Support Project Office
|
| MAST | measurement and stimulus
|
| MAST | measurement and stimulus system (data base)
|
| MASTIF | Multiaxis Spin Test Inertial Facility
|
| MAT | meteorological atmospheric turbulence
|
| MAT | mount alignment tool
|
| MAT | multiple actuator test
|
| MATCO | material control
|
| MATCO | materials analysis, tracking, and control
|
| MATE | modular automated test equipment
|
| MATE | modular automatic test equipment
|
| MATS | master manufacturing and test schedule
|
| MAU | million accounting units
|
| MAWG | Maintenance Analyzer Working Group
|
| MB | main bus
|
| MB | management baseline
|
| MB | manned base
|
| MB | midbody
|
| MBA | multiple beam antenna
|
| MBA | multiple berthing adapter
|
| MBAC | Marshall booster assembly contractor
|
| MBAR | Marshall baseline accounting and reporting system
|
| MBB | Messerschmitt-Boklow-Blahn
|
| MBC | maximum breathing capacity
|
| MBCP | mission budget capture program
|
| MBCS | motion base crew station (SMS)
|
| MBE | Minority Business Enterprises
|
| MBFP | manufacturing build and flow plan
|
| MBI | multibus interface
|
| MBK | medications and bandage kit
|
| MBL | mobile unit (TACAN station)
|
| MBM | magnetic bubble memory
|
| MBO | management by objective
|
| MBPS | main bus power supply
|
| MBSU | main bus switching unit
|
| MBV | main base visit
|
| MC | machine check
|
| MC | manual control
|
| MC | material control
|
| MC | memory configuration
|
| MC | midcourse correction
|
| MC | military characteristic
|
| MC | mission capability
|
| MC | mission completion
|
| MC | mission continuation
|
| MC | mission controller
|
| MC | momentary contact
|
| MC&C | measurement, command, and control
|
| MC&W | master caution and warning
|
| MC/EC | mission-critical/embedded computer
|
| MCA | main console assembly
|
| MCA | maximum crossing altitude
|
| MCA | monitoring and control assembly
|
| MCA | motor controller assembly
|
| MCA | multichannel analyzer
|
| MCAT | Manufacturing Cell Action Team
|
| MCAT | missile carrier air transport
|
| MCBF | mean cycle between failures
|
| MCC | Mission Control Center (JSC)
|
| MCC | main combustion chamber
|
| MCC | main control console
|
| MCC | midcourse correction
|
| MCC | mobile command center
|
| MCC-H | Mission Control Center, Houston
|
| MCC-K | Mission Control Center, Kennedy
|
| MCCC | Mission Control and Computing Center
|
| MCCG | Mission Command and Control Group (NASA)
|
| MCCL | maintainability criteria checklist
|
| MCCL | maintenance criteria checklist
|
| MCCP | mission contamination control plan
|
| MCCR | mission-critical computer resource
|
| MCCS | Mission Control Center simulation
|
| MCCS | Mission Control Center system
|
| MCCS | mission-critical computer system
|
| MCD | minimum cost design
|
| MCDS | maintenance control and display system
|
| MCDS | malfunction CRT display system
|
| MCDS | management communication and data system
|
| MCDS | multifunction CRT display system
|
| MCDU | multifunction CRT display unit
|
| MCE | manpower and cost estimate
|
| MCE | model control element
|
| MCF | maintenance and checkout facility
|
| MCF | military computer family
|
| MCF | mission control facility
|
| MCI | midcourse interceptor
|
| MCIR | mission configuration and implementation requirements
|
| MCIS | material control and information system
|
| MCIU | manipulator controller interface unit
|
| MCIU | master controller interface unit
|
| MCIU | mission control and interface unit
|
| MCL | mass cargo lander
|
| MCL | mass change log
|
| MCL | master configuration list
|
| MCLT | maximum cruise level thrust
|
| MCM | MADS control module
|
| MCM | multichip module
|
| MCN | maintenance change notice
|
| MCN | master change notice
|
| MCO | mission control operations
|
| MCOP | Mission Control Operations Panel
|
| MCP | Military Construction Program
|
| MCP | main control panel
|
| MCP | master change package
|
| MCP | master change proposal
|
| MCP | master computer program
|
| MCP | materials control plan
|
| MCP | measurements control procedure
|
| MCP | minor cycle period
|
| MCP | mission control programmer
|
| MCP | monitoring and control panel
|
| MCPC | manipulator controller power conditioner
|
| MCPP | mission configuration product plan
|
| MCPS | major cost proposal system
|
| MCR | master change record
|
| MCR | master change request
|
| MCRDF | mission configuration requirements data file
|
| MCRF | mission configuration requirements file
|
| MCRG | Mission Configuration Requirements Group
|
| MCS | maintenance and checkout station
|
| MCS | management control system
|
| MCS | maneuver control system
|
| MCS | manufacturing control system
|
| MCS | master control station
|
| MCS | measurements calibration system
|
| MCS | mission control system
|
| MCS | monitor control system
|
| MCT | MCC console trainer
|
| MCT | Mercad telluride
|
| MCT | maximum climb thrust
|
| MCT | mercury, cadmium, telluride
|
| MCT | methodology coordination team
|
| MCT | mission control team
|
| MCU | master control unit
|
| MCU | medium close-up
|
| MCU | mission control unit
|
| MCVP | materials control and verification program
|
| MCW | modulated continuous wave
|
| MD | Missile Division
|
| MD | malfunction detection
|
| MD | manual direct
|
| MD | manual disconnect
|
| MD | master dimension
|
| MD | microdot
|
| MD | mid-deck
|
| MD | mission director
|
| MD-BF | body flap manual direct control mode
|
| MD-P | pitch manual direct control mode
|
| MD-YR | yaw roll manual direct control mode
|
| MDA | maintainability design approach
|
| MDA | manufacturing design analysis
|
| MDA | mid-deck assembly
|
| MDA | mission data analysis
|
| MDA | motor drive amplifier
|
| MDA | multiple docking adapter
|
| MDAC | McDonnell Douglas Aircraft Company
|
| MDAC | McDonnell Douglas Astronautics Company
|
| MDAR | malfunction detection, analysis, and recording
|
| MDAS | meteorological data acquisition system
|
| MDAS | mission data acquisition system
|
| MDB | main memory data output bus
|
| MDB | master data base
|
| MDB | mission data book
|
| MDC | main display console
|
| MDC | mission director center
|
| MDC | mission duty cycle
|
| MDCA | main distribution control assembly
|
| MDCS | maintenance data collection system
|
| MDCS | malfunction display and control system
|
| MDCS | master digital command system
|
| MDCS | material data collection system
|
| MDD | mate/demate device
|
| MDDS | material directory data sheet
|
| MDE | mission-dependent equipment
|
| MDE | mission-dependent experiment
|
| MDE | modular display electronics
|
| MDF | Manipulator Development Facility
|
| MDF | Mating/Demating Facility
|
| MDF | main distribution frame
|
| MDF | mild detonating fuse
|
| MDFP | MAST data format processing
|
| MDFP | mission data format processing
|
| MDI | management data and information
|
| MDI | mission data input
|
| MDL | master data library
|
| MDL | module design language
|
| MDL | momentum dump logic
|
| MDM | Material Division Manual
|
| MDM | manipulator deployment mechanism
|
| MDM | module design methodology
|
| MDM | multiplexer/demultiplexer
|
| MDOP | maximum design operating pressure
|
| MDP | main display panel
|
| MDP | master display panel
|
| MDP | mission data pressure
|
| MDP | mission data processing
|
| MDP | mission data processor
|
| MDR | maintenance demand rate
|
| MDR | major design review
|
| MDR | manufacturing design review
|
| MDR | material disposition review
|
| MDR | mechanical design review
|
| MDR | midterm design review
|
| MDR | minor discrepancy repair
|
| MDR | missing data report
|
| MDR | mission data reduction
|
| MDR | monthly director's review
|
| MDRD | mission data requirements document
|
| MDRS | manufacturing data retrieval system
|
| MDRS | mission data retrieval system
|
| MDS | magnetic disk system
|
| MDS | malfunction detection system
|
| MDS | management data system
|
| MDS | master development schedule
|
| MDS | minimum discernible signal
|
| MDS | mission development simulator
|
| MDSD | mate/demate stiff-leg derrick
|
| MDSE | manufacturing and development support equipment
|
| MDSS | mission data support system
|
| MDSSC | McDonnell Douglas Space Systems Company
|
| MDST | mission director support team
|
| MDST | mission disaster support team
|
| MDT | maintenance demand time
|
| MDT | mean detonating time
|
| MDT | mean downtime
|
| MDT | measurement descriptor table
|
| MDT | mountain daylight time
|
| MDTSCO | McDonnell Douglas Technical Service Company
|
| MDU | mission data unit
|
| MDV | map and data viewer
|
| ME | Manufacturing Engineering (MSFC)
|
| ME | main engine
|
| ME | management engineering
|
| ME | metallurgical engineer
|
| ME | miscellaneous equipment
|
| ME | mission evaluation
|
| ME&D | manufacturing engineering and development
|
| MEA | main electronics assembly
|
| MEA | maintenance engineering analysis
|
| MEAR | maintenance engineering analysis request
|
| MEAR | manufacturing engineering analysis report
|
| MEB | main electronics box
|
| MEBA | Marine Engineers' Beneficial Association
|
| MEBO | main engine burnout
|
| MEC | main engine controller
|
| MEC | manual emergency control
|
| MEC | master event controller
|
| MEC | mission events controller
|
| MECA | main engine controller assembly
|
| MECA | missile electronics computer assembly
|
| MECAS | mission equipment configuration accounting system
|
| MECCA | master electrical common connector assembly
|
| MECF | main engine computational facilities
|
| MECLSI | mission equipment configuration launch site installation
|
| MECO | main engine cutoff
|
| MECR | maintenance engineering change request
|
| MECSLSI | mission equipment cargo Shuttle launch site
|
| MECSLSI | mission equipment cargo support launch site
|
| MED | manual entry device
|
| MED | momentum exchange device
|
| MEDICS | medical information computer system
|
| MEDS | mechanical engineering design system
|
| MEE | mission-essential equipment
|
| MEECN | minimum essential emergency communication network
|
| MEFE | mission-essential-function equipment
|
| MEI | main engine ignition
|
| MEI | master end item
|
| MEIU | main engine interface unit
|
| MEK | methylethyl ketone
|
| MEK | mission equipment kit
|
| MEKF | Misson Equipment Kit Facility
|
| MEL | minimum equipment list
|
| MELI | master equipment list index
|
| MEM | Mars excursion module
|
| MEM | meteoroid exposure module
|
| MEM | mid-deck electronics module
|
| MEM | module exchange mechanism
|
| MENS | mission element needs statement
|
| MEO | manufacturing engineering order
|
| MEO | mid Earth orbit
|
| MEOP | maximum expected operating pressure
|
| MEP | Manipulator Engineering Panel
|
| MEP | main engine propellant
|
| MEP | management engineering program
|
| MEP | mean effective pressure
|
| MEP | medium external pressurized
|
| MEP | minimum entry point
|
| MER | Mission Evaluation Room
|
| MERL | Materials Engineering Research Laboratory
|
| MERSAT | meteorology and Earth observation satellite
|
| MERU | milli-Earth rate unit
|
| MES | main engine start
|
| MES | mated elements simulator
|
| MES | mated events simulator
|
| MES | mission events sequence
|
| MESA | miniature electrostatic accelerometer
|
| MESA | modular equipment stowage assembly
|
| MESC | master events sequence controller
|
| MESC | mission events sequence controller
|
| MESELSI | mission extension Shuttle equipment launch site
|
| MESELSI | mission extension support equipment launch site
|
| MESSOC | model evaluation of Space Station operations cost
|
| MET | master events timer
|
| MET | mission elapsed time
|
| MET | mission events timer
|
| MET | multielement test
|
| METS | multienvironment test system
|
| METVC | main engine thrust vector control
|
| MEU | medium external unpressurized
|
| MEV | mass excursion vehicle
|
| MEWG | Maintenance Engineering Working Group
|
| MF | major function
|
| MF | master frame
|
| MF | mate and ferry
|
| MF | mated flight
|
| MF | medium frequency
|
| MF | mid-deck forward
|
| MF | midfuselage
|
| MF | motor field
|
| MFA | manned flight awareness
|
| MFBP | manufacturing flow and build plan
|
| MFC | manual flight control
|
| MFC | multiple-flight computer
|
| MFC | multiple-flight controller
|
| MFCS | manual flight control system
|
| MFD | main feed
|
| MFD | malfunction detection
|
| MFD | metal friction device
|
| MFE | midfrequency executive
|
| MFF | MDM flight forward
|
| MFG | major functional group
|
| MFLOPS | millions of floating-point operations per second
|
| MFO | major function overlay
|
| MFP | main free path
|
| MFP | mission flight plan
|
| MFP | mosaic focal plane
|
| MFR | manipulator foot restraint
|
| MFR | maximum flight rate
|
| MFR | multifunctional receiver
|
| MFR | multifunctional review
|
| MFRM | mobile foot restraint manipulator
|
| MFSK | M-ary frequency shift keying
|
| MFSP | macrofunction signal processor
|
| MFT | mean flight time
|
| MFT | module fixture transporter
|
| MFTAD | master flight test assignment document
|
| MFTIO | minimum flyout time for orbital interception
|
| MFV | main fuel valve
|
| MG | middle gimbal
|
| MG | mission generation
|
| MG | mobile generator
|
| MG | motor-generated
|
| MGA | middle gimbal angle
|
| MGC | manual gain control
|
| MGE | maintenance ground equipment
|
| MGI | management group identifier
|
| MGS | mobile ground station
|
| MGS | mobile ground system
|
| MGSE | mechanical ground support equipment
|
| MGT | major ground test
|
| MGT | mobile ground terminal
|
| MGVT | mated ground vibration test
|
| MH | man-hour
|
| MHA | multiple-headset adapter
|
| MHC | manipulator hand controller
|
| MHD | magnetohydrodynamics
|
| MHD | multihead disk
|
| MHE | material handling equipment
|
| MHF | medium high frequency
|
| MHP | move and handling procedure
|
| MHSC | manipulator handset controller
|
| MHV | miniature homing vehicle
|
| MHW | multihundred watt
|
| MHz | megahertz (megacycles per second)
|
| MI | malleable iron
|
| MI | management information
|
| MI | minimum impulse
|
| MI | minority institution
|
| MIA | multiple-interface adapter
|
| MIA | multiplexer interface adapter
|
| MIB | master interconnect board
|
| MIB | minimum-impulse bit
|
| MIB | multilayer interconnection board
|
| MIC | Management Information Center
|
| MIC | memory interface connector
|
| MIC | minimum-impulse controller
|
| MICB | Meck Island Control Building
|
| MICB | Mission Integration Change Board
|
| MICIS | material inventory control and information system
|
| MICIS | mechanized information control inventory system
|
| MICIS | mechanized inventory control information system
|
| MICNS | modular integrated communication and navigation system
|
| MICOM | Missile Command
|
| MICOM | Missile Command (Army)
|
| MICOS | multifunctional infrared coherent optical sensor
|
| MICS | management information and control system
|
| MIDAS | mission integrated design analysis simulator
|
| MIDDS | meteorological interactive data display system
|
| MIDSIM | midcourse exoatmospheric event-based simulator
|
| MIDSIM | midcourse simulation
|
| MIEWF | master integrated engineering work file
|
| MIF | mechanical integration frame
|
| MIF | module integration facility
|
| MIG | metal inert gas
|
| MIG | miniature integrating gyro
|
| MII | master inspection item
|
| MIIA | Merritt Island industrial area (NASA)
|
| MIL | GSFC STDN station (KSC)
|
| MIL | man in loop
|
| MIL-STD | military standard
|
| MILA | Merritt Island launch area
|
| MILCOMSAT | military communications satellite
|
| MILES | a computerized schedule system
|
| MILS | missile impact location system
|
| MILSTAR | military communications satellite
|
| MILSTAR | military strategic and tactical relay system
|
| MIMO | multiple instruction, multiple data paths
|
| MIMOSA | mission modes and space analysis
|
| MIMR | monthly integration management review
|
| MIMS | medical information management system
|
| MINW | master interface network
|
| MIO | Management Integration Office
|
| MIP | MMU integration plan
|
| MIP | Measurement Integration Panel
|
| MIP | mandatory inspection point
|
| MIP | minimum-impulse pulse
|
| MIP | modification instruction package
|
| MIPIAN | computer-assisted process planning
|
| MIPIR | missile impact pointing imaging radar
|
| MIPR | military intergovernmental purchase request
|
| MIPS | Merritt Island press site
|
| MIR | malfunction investigation report
|
| MIR | mission integration review
|
| MIRS | management information and reporting system
|
| MIRV | multiple independently targetable reentry vehicles
|
| MIS | magnetic isolation system
|
| MIS | management information system
|
| MIS | master index schedule
|
| MIS | master integrated schedule
|
| MIS | mission information system (subsystem)
|
| MIS-PLAN | MIS-payload activity network
|
| MISTRAM | missile trajectory measurement
|
| MIT | Massachusetts Institute of Technology
|
| MIT | master instruction tape
|
| MIT | mercury in thruster
|
| MIT | mercury ion transfer
|
| MIT | mission integration team
|
| MIT/LL | Massachusetts Institute of Technology, Lincoln Laboratory
|
| MITAS | missile threat analysis simulation (simulator)
|
| MITIL | MIT Instrumentation Laboratory
|
| MITOC | missile intercom technical operational communication
|
| MITTS | mobile IGOR tracking telescope system
|
| MIU | malfunction insertion unit
|
| MIUS | modular integrated utility system
|
| MIVP | mission interface verification plan
|
| MJ | mechanical joint
|
| MJ | megajoule
|
| MJS | manipulator jettison system
|
| ML | message line
|
| ML | mobile launcher
|
| ML | mold line
|
| MLA | MDM launch aft
|
| MLA | monochrome lens assembly
|
| MLB | multilayer board
|
| MLC | mobile launcher computer
|
| MLE | mesoscale lightning experiment
|
| MLF | MDM launch forward
|
| MLG | main landing gear
|
| MLGD | main landing gear door
|
| MLGS | microwave landing guidance system
|
| MLI | multilayer insulation
|
| MLL | MDM launch left
|
| MLP | machine language program
|
| MLP | mobile launch platform
|
| MLP | mobile launcher platform
|
| MLR | MDM launch right
|
| MLR | monodisperse latex reactor
|
| MLS | medium long shot
|
| MLS | microwave landing system
|
| MLS | multilevel security
|
| MLV | medium launch vehicle
|
| MLV | medium-lift launch vehicle
|
| MLW | maximum landing weight
|
| MM | Marshall manual
|
| MM | main memory
|
| MM | main module
|
| MM | major mode
|
| MM | man-month
|
| MM | mass memory
|
| MM | material manual
|
| MM | motor module
|
| MM&TS | master manufacturing and test schedule
|
| MMA | moving mechanical assembly
|
| MMACS | maintenance management and control system
|
| MMAS | material management and accounting system
|
| MMAS | mechanized material accountability system
|
| MMC | Martin Marietta Corporation
|
| MMC | Mission Management Center
|
| MMC | master microprocessor control
|
| MMC | metal matrix composite
|
| MMC | midcourse measurement correction
|
| MMC | midmotor controller
|
| MMCA | midmotor controller assembly
|
| MMCCB | Multimission Change Control Board
|
| MMCL | master measurement and control list
|
| MMD | MSC maintenance depot
|
| MMD | mean mission duration
|
| MMD | mobile maintenance depot
|
| MMDB | master measurement data base
|
| MMDF | mission model data file
|
| MMDS | maintenance management data system
|
| MMES | MSFC mated-element system
|
| MMF | magnetomotive force
|
| MMH | maintenance man-hour
|
| MMH | monomethylhydrazine
|
| MMH/FH | maintenance man-hours per flight hour
|
| MMH/Y | maintenance man-hours per year
|
| MMI | Marshall management instruction
|
| MMI | man-machine interface
|
| MMIA | monolithic microwave integrated amplifier
|
| MMIC | millimeter-wave monolithic integrated circuit
|
| MMIC | monolithic microwave integrated circuit
|
| MMIDS | man-machine interface development station
|
| MMIP | mass memory integration plan
|
| MML | master measurement list
|
| MMLS | Martin Marietta Launch Services
|
| MMLS | model-modes-loads-stresses
|
| MMOS | multimode optical sensor
|
| MMP | mechanical parts, materials, processes
|
| MMP | mission management plan
|
| MMPSE | multiuse mission payload support equipment
|
| MMR | mass memory ready
|
| MMRS | manned military recovery system
|
| MMS | manned maneuvering system
|
| MMS | mission modular spacecraft
|
| MMS | modular multiband scanner
|
| MMS | module management system
|
| MMS | multimission modular spacecraft
|
| MMS | multimission spacecraft
|
| MMSE | multimission support equipment
|
| MMSE | multiuse mission support equipment
|
| MMT | mass memory test
|
| MMT | mission management team
|
| MMU | manned maneuvering unit
|
| MMU | mass memory unit
|
| MMU | midcourse measurement unit
|
| MMUS | mass memory unit simulator
|
| MN | main bus
|
| MNEE | mission nonessential equipment
|
| MNET | Mission and Data Operations Directorate network
|
| MNOS | metal nitride oxide semiconductor
|
| MO | major objective
|
| MO | manned orbiter
|
| MO | manual orientation
|
| MO | manufacturing order
|
| MO | master oscillator
|
| MO | mid-deck overhead
|
| MO | mission operations
|
| MOA | make on arrival
|
| MOA | memorandum of agreement
|
| MOC | Marine Operation Center
|
| MOC | Mission Operations Center
|
| MOC | mission operations computer
|
| MOCC | Mission Operations Control Center
|
| MOCF | Mission Operations Computational Facility
|
| MOCITE | mobile checkout and integration test equipment
|
| MOCR | mission operations control room
|
| MOCS | multichannel ocean color sensor
|
| MOCV | manual oxygen control valve
|
| MOD | Mission Operations Directorate
|
| MOD | mission objectives document
|
| MOD | mission operations director
|
| MODART | method of defeating advanced radar threats
|
| MODS | military orbital development system
|
| MOE | measure of effectiveness
|
| MOF | manned orbital flight
|
| MOI | moments of inertia
|
| MOL | manned orbital laboratory
|
| MOLFLUX | molecular flux (model)
|
| MOM | mission operations manager
|
| MOMS | mobile optical measurement system
|
| MOP | measure of performance
|
| MOP | mission operations plan
|
| MOP | mission operations processor
|
| MOPA | master oscillator power amplifier
|
| MOPIS | missile operations intercommunications system
|
| MOPR | mission operations planning review
|
| MOPR | mission operations planning room
|
| MOPS | military operation phone system
|
| MOPS | missile operations
|
| MOPS | mission operations planning system
|
| MOR | manufacturing operations record
|
| MOR | manufacturing order record
|
| MOR | mission objective and requirements
|
| MORD | medical operations requirements document
|
| MORL | manned orbiting research laboratory
|
| MORT | management oversight and risk tree
|
| MOS | metal oxide on substrate
|
| MOS | metal oxide semiconductor
|
| MOS | mission operations system
|
| MOS | multiple optical switch
|
| MOSC | Mission Operations Support Center
|
| MOSFET | metal-on-silicon field-effect transistor
|
| MOSP | mission operations success program
|
| MOSP | mission operations support program
|
| MOSPO | mobile satellite photometric observatory
|
| MOSR | mission operations support requirement
|
| MOSS | MMDB operational subsystem status
|
| MOSS | Mission Operations Support Services
|
| MOSS | manned orbital space station
|
| MOSTT | mosaic optical sensor technology test bed
|
| MOTR | multiple-object tracking radar
|
| MOU | memorandum of understanding
|
| MOV | main oxidizer valve
|
| MOW | mission operations wing
|
| MP | Meteorology Panel
|
| MP | major program
|
| MP | management package
|
| MP | mass properties
|
| MP | measuring point
|
| MP | medium pressure
|
| MP | melting point
|
| MP | mission planner
|
| MP | mod package
|
| MP&C | maintenance planning and control
|
| MP/G | material procedure government
|
| MPA | manufacturing producibility analysis
|
| MPA | miniature pendulum accelerometer
|
| MPAC | multipurpose applications console
|
| MPAD | Mission Planning and Analysis Division (JSC)
|
| MPAR | maintainability problem and assessment report
|
| MPB | maintenance parts breakdown
|
| MPBS | main power bus supply
|
| MPC | Meteorological Prediction Center
|
| MPC | material procurement cost
|
| MPC | memory protection check
|
| MPC | midbody pyro controller
|
| MPC | midpower controller
|
| MPCA | midpower controller assembly
|
| MPCMP | mass properties control and management plan
|
| MPD | main dc power distributor
|
| MPD | management position description
|
| MPD | maximum permissible dose
|
| MPE | maximum permissible exposure
|
| MPESS | mission-peculiar equipment support structure
|
| MPESS | mission-peculiar experiment support structure
|
| MPG | multipoint grounding
|
| MPGHM | mobile payload ground handling mechanism
|
| MPHE | material and personnel handling equipment
|
| MPI | mean point of impact
|
| MPI | mission payload integration
|
| MPICD | mission-peculiar interface control document
|
| MPIIN | modification procurement instrument identification
|
| MPIO | Mission Payload Integration Office
|
| MPL | maintenance parts list
|
| MPL | master program library
|
| MPL | materials and process list
|
| MPL | mechanical parts list
|
| MPL | minimum power level
|
| MPLN | maintenance planning (data base)
|
| MPM | manipulator positioning mechanism
|
| MPMP | mass properties management plan
|
| MPMP | mechanical parts, material process
|
| MPMP | mechanical parts, materials, and processes
|
| MPMSE | multiuse payload and mission support equipment
|
| MPOR | master power-on reset
|
| MPP | manufacturing process procedure
|
| MPP | material processing procedure
|
| MPP | mission preparation processor
|
| MPPSE | multipurpose payload support equipment
|
| MPR | maintainability problem report
|
| MPR | malfunction problem record
|
| MPR | mockup purchase request
|
| MPR | monthly program review
|
| MPRAS | multipath redundant avionics suite
|
| MPS | main propulsion system (subsystem)
|
| MPS | maneuvering propulsion subsystem
|
| MPS | master production schedule
|
| MPS | master program schedule
|
| MPS | material processing satellite
|
| MPS | material processing specification
|
| MPS | materials processing in space
|
| MPS | materials processing science
|
| MPS | multiple protective structures
|
| MPS&P | material processing specifications and procedures
|
| MPSR | mission profile storage and retrieval
|
| MPSR | multipurpose support room
|
| MPST | multipurpose support team
|
| MPT | main propulsion test
|
| MPT | mission planning terminal
|
| MPTA | main propulsion test article
|
| MPTF | Main Propulsion Test Facility
|
| MPTF | mission planning task force
|
| MPTP | main propulsion test program
|
| MPTS | multipurpose tool set
|
| MPVA | main propellant valve actuator
|
| MR | maintenance and refurbishment
|
| MR | management review
|
| MR | master reset
|
| MR | material request
|
| MR | material review
|
| MR | mission report
|
| MR | mixture ratio
|
| MRA | mechanical readiness assessment
|
| MRA | mission requirements analysis
|
| MRA | mission requirements and allocation
|
| MRB | Material Review Board
|
| MRB | mission reconfiguration base
|
| MRBM | medium-range ballistic missile
|
| MRC | Measurement Requirements Committee
|
| MRCR | measurement requirement change request
|
| MRD | material review disposition
|
| MRD | mission requirements definition
|
| MRD | mission requirements document
|
| MRDA | mission requirements definition and analysis
|
| MRDB | mission requirements data base
|
| MRDR | material review disposition record
|
| MRDR | mission requirements data base Rockwell
|
| MRE | material review engineering
|
| MRF | maintenance responsibility file
|
| MRF | maximum retarding force
|
| MRF | measurements/stimuli request form
|
| MRF | missile repair facility
|
| MRI | measurement requirements and interface
|
| MRIM | MOD/MOC reconfiguration interface manager
|
| MRIR | medium-resolution infrared radiometer
|
| MRL | manipulator retention latch
|
| MRL | manipulator retention lock
|
| MRL | material requirements list
|
| MRL | measurement requirement list
|
| MRL | missile reference line
|
| MRM | mission reconfiguration master
|
| MRM | mission requirements matrix
|
| MRMS | mission reconfiguration management system
|
| MRMS | mobile remote manipulator system
|
| MRO | maintenance repair and operation
|
| MRO | material release order
|
| MRP | manufacturing resource planning
|
| MRP | material requirements planning
|
| MRP | material review process
|
| MRP | missile reference plane
|
| MRP | mission reference plane
|
| MRR | manufacturing readiness review
|
| MRR | mission readiness review
|
| MRR | mission reconfiguration request
|
| MRR | mission requirements review
|
| MRS | management review system
|
| MRS | master repair schedule
|
| MRS | mobile remote servicer
|
| MRTFB | major range and test facility base
|
| MRTS | material requirements tracking system
|
| MRTS | modification and repair tracking system
|
| MRTS | modification recycle tracking system
|
| MRWG | Mission Requirements Working Group
|
| MS | Marsenne-Schmidt
|
| MS | machine screw
|
| MS | machine steel
|
| MS | manned system
|
| MS | margin of safety
|
| MS | mass spectrometer
|
| MS | master switch
|
| MS | material specification
|
| MS | mating sequence and control
|
| MS | mechanical system
|
| MS | medium shot
|
| MS | milestone
|
| MS | military standard (parts designation)
|
| MS | mission sequence
|
| MS | mission specialist
|
| MS | mission station
|
| MS | monitor station
|
| MS-DOS | Microsoft disk operating system
|
| MS/MS | material science and manufacturing in space
|
| MSA | Metropolitan Survey Area
|
| MSA | main bus solar array
|
| MSA | major subcontract administrator
|
| MSA | master schedule authorization
|
| MSA | material service area
|
| MSA | material subcontract administrator
|
| MSA | minimum surface area
|
| MSAD | materials summary acceptance document
|
| MSB | most significant bit
|
| MSBLS | microwave scan-beam landing system
|
| MSBLS-GS | MSBLS ground station
|
| MSC | Materials Service Center
|
| MSC | Mission Support Center (Space Station)
|
| MSC | master schedule chart
|
| MSC | master sequence controller
|
| MSC | mobile service carrier
|
| MSC | mobile service center
|
| MSC | moding, sequencing, and control
|
| MSCB | Manufacturing Status Control Board
|
| MSCL | Measurement Standards and Calibration Laboratory
|
| MSCR | measurements/stimuli change request
|
| MSCS | mobile service center system
|
| MSD | Missile Systems Division
|
| MSD | Mission Support Directorate
|
| MSD | mission systems data
|
| MSDOS | mass storage digital operating system
|
| MSDP | mission system distribution panel
|
| MSDS | materials safety data sheet
|
| MSDS | multispectral scanner and data system
|
| MSDT | multiple Shuttle data tape
|
| MSE | maintenance support equipment
|
| MSE | manned space flight engineer
|
| MSE | measuring and stimuli equipment
|
| MSE | mechanical support equipment
|
| MSE | medical support equipment
|
| MSE | mission staff engineer
|
| MSE | mission support equipment
|
| MSEC | master separation events controller
|
| MSF | maintenance source file
|
| MSF | manned space flight
|
| MSFC | Marshall Space Flight Center (NASA)
|
| MSFN | manned space flight network
|
| MSFP | manned space flight program
|
| MSFSG | Manned Space Flight Support Group
|
| MSG | Maintenance Steering Group
|
| MSG | Maintenance Study Group
|
| MSG | Mechanical Subsystem Group
|
| MSG | Mission Support Group
|
| MSI | maintenance-significant item
|
| MSI | medium-scale integration
|
| MSIA | multispectral image analyzer
|
| MSID | master stimulus identification document
|
| MSID | measurement and stimulus identification
|
| MSID | measurement stimulation identification
|
| MSID | measurement stimulus identification
|
| MSIF | multisystem integration facility
|
| MSIS | man-systems integration standards
|
| MSK | M-ary shift keying
|
| MSK | manual select keyboard
|
| MSL | Materials Science Laboratory
|
| MSL | Mechanical Systems Laboratory
|
| MSL | master system library
|
| MSL | mean sea level
|
| MSL | mode select logic
|
| MSLD | mass spectrometer leak detector
|
| MSM | manned support module
|
| MSME | Master of Science degree in mechanical engineering
|
| MSMP | manned support module program
|
| MSMP | multispectral measurements program
|
| MSO | Manufacturing Safety Office
|
| MSO | model for spares optimization
|
| MSOB | Manned Spacecraft Operations Building
|
| MSOCC | Multisatellite Operations Control Center
|
| MSOIN | minor subcontractor or IDWA notification
|
| MSP | Mission Security Panel
|
| MSP | mission sequence plan
|
| MSP | mission support plan
|
| MSR | Mission Support Room
|
| MSR | measurement stimuli request
|
| MSR | measurements support request
|
| MSRP | mission support real property
|
| MSS | Manufacturers' Standardization Society
|
| MSS | maintenance status system
|
| MSS | mass storage subsystem
|
| MSS | mechanical support system
|
| MSS | medium/small satellite servicing
|
| MSS | meeting support system
|
| MSS | message source selector
|
| MSS | mission specialist station
|
| MSS | mission status summary
|
| MSS | mobile service structure
|
| MSS | mobile servicing system
|
| MSS | multispectral scanner system
|
| MSS | multisystem software
|
| MSSRV | Mars surface-sample return vehicle
|
| MSSTM | military space system technology model
|
| MSSTP | Military Space Systems Technology Plan
|
| MST | measurement status table
|
| MST | mobile service tower
|
| MST | mountain standard time
|
| MSU | main storage unit
|
| MSU | mass storage unit
|
| MSU | measuring stimuli unit
|
| MSV | mission support vehicle
|
| MSV | monitored sine vibration (test)
|
| MSVP | master Shuttle verification plan
|
| MT | magnetic tape
|
| MT | man-tended
|
| MT | master timer
|
| MT | master tool
|
| MT | maximum torque
|
| MT | mean time
|
| MT | mechanical technician
|
| MT | megaton
|
| MT | member traceability
|
| MT | metric ton
|
| MT | mission time
|
| MT | mission timer
|
| MT | mission trajectory
|
| MT | mobile transfer
|
| MT | mobile transporter
|
| MT | mountain time
|
| MT&SCDSS | materials technology and structural concepts for dsystems
|
| MTA | maintenance task analysis
|
| MTA | major test article
|
| MTA | mass thermal analysis
|
| MTAP | multitask analysis program
|
| MTB | materials testing branch
|
| MTBCF | mean time between critical failures
|
| MTBD | mean time between demand
|
| MTBF | mean time between failures
|
| MTBM | mean time between maintenance
|
| MTBMA | mean time between maintenance action
|
| MTBR | mean time between removal
|
| MTBR | mean time between replacement
|
| MTC | man-tended capability
|
| MTC | manual thrust controller
|
| MTC | manual traffic control
|
| MTC | master thrust control (controller)
|
| MTC | mission and traffic control
|
| MTCA | monitor and test control area
|
| MTCU | magnetic tape control unit
|
| MTE | maintenance test equipment
|
| MTE | multisystem test equipment
|
| MTEC | maintenance test equipment catalog
|
| MTEE | maintenance test equipment, electrical
|
| MTEF | maintenance test equipment, fluid
|
| MTEM | maintenance test equipment module
|
| MTEM | maintenance test equipment, mechanical
|
| MTEO | maintenance test equipment, optical
|
| MTFF | man-tended free flyer
|
| MTFO | modular training field option
|
| MTG | master timing generator
|
| MTGP | monitor table generator program
|
| MTGW | maximum total gross weight
|
| MTI | Morton Thiokol, Incorporated
|
| MTI | moving-target indicator
|
| MTK | mechanical timekeeping
|
| MTK | mechanized timekeeping
|
| MTL | main transfer line
|
| MTLP | monitor table listing program
|
| MTM | mechanical test model
|
| MTM | method of task measurement
|
| MTM | methods time measurement
|
| MTM | multiterminal monitor
|
| MTMO | Mated Test Management Office
|
| MTO | Mississippi Test Operations
|
| MTO | magnetic tape operator
|
| MTO | master timing oscillator
|
| MTO | maximum time-out
|
| MTO | mission task objective
|
| MTO | modification task outline
|
| MTOGW | maximum takeoff gross weight
|
| MTOW | maximum takeoff weight
|
| MTP | manufacturing technical procedure
|
| MTP | master test plan
|
| MTP | mission test plan
|
| MTR | magnetic tape recorder
|
| MTRD | master test requirement document
|
| MTS | magnetic tape station
|
| MTS | magnetic tape system
|
| MTS | main thruster subsystem
|
| MTS | master timing system
|
| MTS | member, technical staff
|
| MTS | metric time system
|
| MTS | mobile tracking station
|
| MTS | motor-operated transfer switch
|
| MTT | maximum touch temperature
|
| MTTA | mean time to accomplish
|
| MTTE | mean time to exchange
|
| MTTF | mean time to failure
|
| MTTFF | mean time to first failure
|
| MTTR | mean time to repair
|
| MTTRF | mean time to restore function
|
| MTU | magnetic tape unit
|
| MTU | master timing unit
|
| MTU | mobile training unit
|
| MTV | mass transfer vehicle
|
| MTVC | manual thrust vector control
|
| MTW | maximum taxi weight
|
| MU | master unit
|
| MU | mobile unit
|
| MU | mockup
|
| MU | multiple unit
|
| MUA | materials usage agreement
|
| MUA | maximum usable altitude
|
| MUA | mutual usage agreement
|
| MUC | Muchea, Australia
|
| MUF | maximum usable frequency
|
| MUL | mission-unique list
|
| MUPPS | mission-unique planning and processing schedule
|
| MUR | manpower utilization report
|
| MUS | mission-unique software
|
| MUSAT | Canadian government satellite
|
| MUSS | module utility support structure
|
| MUX | multiplex
|
| MUX | multiplexer
|
| MV | manual valve
|
| MV | manufacturing verification
|
| MVA | megavolt ampere
|
| MVAS | multipurpose ventricular actuating system
|
| MVC | manual volume control
|
| MVC | master volume control
|
| MVD | map and visual display
|
| MVF | manned vertical flight
|
| MVGVT | mated vertical ground vibration test
|
| MVM | Mariner Venus/Mercury
|
| MVP | master verification plan
|
| MVR | measurement velocity radial
|
| MVS | middle-value select
|
| MVS | midvalue selected
|
| MVS | multiple virtual storage
|
| MVWT | mated vehicle wind tunnel
|
| MW | man-week
|
| MW | microwave
|
| MWB | master workbook
|
| MWD | material withdrawal document
|
| MWG | Maintainability Working Group
|
| MWIR | medium-wavelength infrared
|
| MWOR | maintenance work order request
|
| MWP | maximum working pressure
|
| MWPR | monthly work package report
|
| MWR | mean width ratio
|
| MWS | missile weapon system
|
| MWV | maximum working voltage
|
| MY | man-year
|
| MYTA | maintainability task analysis
|
| MYVAL | maintainability evaluation
|
| MZFW | maximum zero fuel weight
|
| Mb | megabit
|
| Mb | megabyte
|
| Mb/s | megabits per second
|
| Mbps | megabits per second
|
| MeV | megaelectron volt
|
| Mips | million instructions per second
|
| Mips | millions of instructions per second
|
| Mops | million operations per second
|
| m-kg | meter-kilogram
|
| mA | milliampere
|
| mV | millivolt
|
| mW | milliwatt
|
| mbar | millibar
|
| mbps | millibits per second
|
| mg | milligram
|
| mm | millimeter
|
| mmHg | millimeters of mercury
|
| mmW | millimeter wave
|
| modem | modulator/demodulator
|
| mph | miles per hour
|
| ms | millisecond
|
| msec | millisecond
|