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multi-mode receiver
ating modes with quick switching between each, eg (for
MMR for attack aircraft) ground map, ground map
spoiled, etc, each mode requiring a different waveform.
multi-mode receiver Usually means compatible with
VOR, ILS, MLS, DGPS.
multipath effect Anomalies in radar target range and
position, and many other optical/radar situations, caused
by receipt of reflected radiation from land or sea surface
and other reflectors as well as direct signal from target.
multiplane 1 Aeroplane with several sets of main wings,
normally superimposed.
2 Adjective: tail unit or other assembly with several
superimposed horizontal surfaces.
multiple-access receiver Lasercom to make uplink/downlink
by sensing beacons to refine beam aiming.
multiple courses Narrow false courses heard on radio
range, esp. among mountains.
multiple echo[es] Reception of more than one transmission
of a single signal because of refractions and reflections.
multiple ejection rack, MER Interface allowing several
stores to be carried on single external-stores station, with
positive ejector rams to ensure clean separation.
multiple independently targeted RV Delivery system
containing several missile re-entry vehicles each having
own guidance system to separate targets.
multiple independent RV Broader concept than above;
system delivers several warheads which may free-fall or be
independently targeted.
multiple kill capability Usual meaning is that platform has
several types of armament, eg gun plus two types of missile.
multiple options Force employment alternatives
depending on flexibility in tactical/strategic situations,
retargeting and availability of conventional or nuclear
weapons.
multiple RV Re-entry vehicle containing number of separate
warheads which scatter slightly but fall on same area
target.
multiple-time-around echoes Those from targets at exact
multiples of the radar unambiguous range.
multiplexing 1 Act of combining signals from many
sources into common channel, requiring frequency, phase
and time-division.
2 In electrical wiring of whole vehicle, providing redundant
pathways or alternative routes with auto switching
triggered by battle damage or other discontinuity.
multiplexer, multiplexor Device, often stored-program
computer, which handles I/O (input/output) functions of
on-line EDP (1) system with multiple communications
channels.
multi-ply Material, eg wood, fabric, metal or composite,
assembled from several laminar layers.
multiplying valve, multiplier Device whose output is exact
product of several inputs.
multiprocessor Multiprogrammed processor.
multiprogramming Technique allowing single computer
to run several programs simultaneously.
multi-row engine Piston engine having more than two
banks or radial rows of cylinders.
multi-sensor Using more than one type of signal to gather
information; eg optical camera, radar, IR linescan, passive
elint etc.
multiservice connector Personal coupling for suit
pressure, electric heating, oxygen, radio and possibly other
services.
Musical
multisite fracture Main break was preceded by numerous
micro-cracks.
multispectral Capable of responding usefully to wide
range of EM wavelengths including all visible hues, IR and
possibly UV.
multi-stage rocket Vehicle with several stages each fired
and staged in succession.
multistatic dependent surveillance Fusion of airfield
surface sensors and surface-movement radar to provide
precision display for controllers.
multi-step See multi-stage rocket.
multithread architecture Simple parallel programming.
multitube launcher External store filled with parallel tubes
for air-launched rockets.
multi-use thruster Rocket engine capable of being started
and stopped repeatedly in the same mission.
multivibrator Oscillator having two cross-coupled valves
or transistors operating alternately, each input coming
from other stage’s output; can be bistable (flip/flop), monostable
or astable.
MULTS, Mults Mobile universal Link-11 translator
system.
Mumacs Multiple unmanned aircraft control system.
mu-metal High-permeability alloy used to screen equipment
(eg CRT) from stray magnetic influences.
mu-meter Rolling truck with pair of toed-out tyres,
measures side force and hence coefficient of friction. From
µ (mu), coefficient of sliding friction.
Mumps Multi-user MEMS process.
MUN, MUNI, MUNL Municipal.
Munk factor Formula for performance of biplanes based
on ratios of spans, lifts, gap and interference.
MUOS, Muos Mobile- or, confusingly, multiple-, user
objective system (satcom system, USN/DoD).
Mupsow Multi-purpose stand-off weapon.
Murlin Multiband research laser IR.
Muroc Dry California lake, site of USAF flight-test
centre of same name (now Edwards AFB).
Murphy’s law If it is physically possible for an assemblage
of parts to be connected incorrectly, sooner or later they
will be thus connected.
MUS Minimum-use specification.
MUSA, Musa 1 Multiple-element steerable array.
2 Frag submunition for semi-hard targets, dispensed by
MW-1 system (G).
muscle pressure Pneumatic pressure for applying force on
a shaft bearing.
MUSE, Muse 1 Multi-user system [and] environment
[sometimes Musent], includes LBA, L-DCS, BVIS and
other functions.
2 Monitor of UV solar energy.
3 Multiple unified simulated environment.
mush To increase angle of attack suddenly but without
immediate corresponding vertical acceleration, resulting
from momentum along original path.
mush-head See next.
mushroom rivet One having thin convex head with sharp
edge, for thin sheet.
Music 1 Multiple signal classification.
2 Multi-spectral IRCM.
music EW emissions, esp. jamming (colloq.).
Musical Prefix to marking techniques denoting Oboe
guidance (RAF 1943–45).
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