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margin of lift
IFR or VFR. DoD definition: ‘Sufficiently adverse to
military operation so [sic] as to require imposition of
procedural limitation’.
margin of lift 1 Aerostat buoyancy (gross lift) minus
mass.
2 Various meaningless definitions for aerodynes.
margin of safety Percentage of ratio by which ultimate
failing load of component exceeds design limit load.
maria Flat areas on Moon once thought to be seas.
Marie Martian radiation environment experiment.
marine aircraft Designed to operate from water. Hence,
marine aerodrome or airport.
marine distress signal Pyrotechnic fired after unpremeditated
alighting.
maritime aircraft Designed to operate over sea areas.
maritime PDNES PDNES having extremely short
pulses to reduce sea-clutter.
maritime SAR Region within which USCG exercises
SAR co-ordination function (FAA).
MARK Material accountability and robotic kitting
system (DoD).
Mark Air-control agency code for commanded point of
weapon release, usually preceded by word ‘Standby’
(DoD).
mark 1 Abb. Mk, British word meaning version or subtype
to distinguish each variant of a basic aircraft design,
whether produced in series or not. See * number.
2 Verb, to illuminate a target by flares, TIs, markers or
laser.
marked target One illuminated by (2) above to enable it
to be attacked visually or by laser-homing weapons.
marker 1 Distinctive visual (usually pyrotechnic), electronic
or other device dropped on surface location.
2 Visual or electronic navigation aid indicating a fixed
position, see * beacon.
3 Aircraft detailed to mark a target by air-dropped
stores or to designate it by laser.
marker beacon Any beacon (course-indicating, fan,
outer, middle, inner) giving substantially vertical radiation,
usually at 75 MHz, which gives aural and visual
signal in cockpit (see outer *, middle * etc).
marker template One having profile of common stringer
or similar standard section, for marking end-cuts and cutouts.
market 1 The world total of available potential
customers.
2 To promote one’s product in (1).
marketable range or radius Maximum sector distance
sold to customers by air carrier; eg Dash-7 * 400 miles,
while ‘operational range’ is 700 miles.
marking panel Sheet of material displayed by ground
troops for signalling to friendly aircraft.
marking team Troops dropped into tactical area to
establish navaids and possibly other electronic facilities.
marking up Putting bright paint line round each
airframe crack or blemish.
mark number Suffix numeral identifying each mark;
Roman to 1946, Arabic subsequently (UK).
Markov analysis A logical and rigorous technique to
ascertain the airworthiness of systems having multichannel
architecture with numerous inter-related
functioning parts and monitors.
Marmon clamp Patented ring joint for pipe sections,
with wedge action.
MASC
MARRES Manual radar-reconnaissance exploitation
system.
marrying up Offering up major airframe or other large
items in erection of aircraft or space launcher, esp. when
likelihood of imperfect fit.
Mars 1 Mid-air recovery (USN), or retrieval (USAF)
system.
2 Military affiliate radio system (DoD).
3 Multi-access retrieval system.
4 Modular airborne recorder series, or system.
5 Minimally attended radar station.
6 Meteorological and AIS (1) retrieval system.
7 Multi-applications recording, or reproducer,
system.
8 Military Archive and Research Services (UK).
9 Mobile automatic reporting station.
10 Modular adaptable radar simulator.
11 Medium-altitude reconnaissance system.
12 Mission-assessment recording system.
13 Multimission airborne reconnaissance and surveillance.
Marsa Military accepts responsibility for separation of
aircraft (DoD/FAA).
marshal 1 Person giving visual and/or aural signals to
sporting aircraft or sailplanes to ensure line-up in correct
take-off sequence.
2 See Air Marshal, Sky marshal.
marshaller Person on apron or flightline giving visual
signals or radio guidance to aircraft on ground, eg directions
where to park; hence, * frequency, * van.
marshalling point Place on airfield where aircraft come
under control of a marshal (sporting, out-bound) or
marshaller (inbound).
marshalling wand Combined black flag and illuminated
wand normally used one in each hand by marshaller.
MARSS 1 Microwave airborne radiometer and scanning
system.
2 Multi-mission airborne reconnaissance and surveillance
system (USA).
MarSTC Maritime Strike Carrier [capability or
mission] (UK).
MART, Mart 1 Modular air/ground remote terminal.
2 Mini-avion de Reconnaissance Télécommandé =
RPV (F).
3 Mean active repair time.
Martacs Maritime tactics.
martensite Family of rapidly quenched [hence hard but
brittle] steels.
Martha Maillage anti-aérien des radars tactiques contre
hélicoptères et avions.
Martlesham Martlesham Heath, pre-1939 centre of
military aircraft test and evaluation in UK, hence * figures
( = indisputable).
MARV, Marv Manoeuvrable, or manoeuvring [maneuvering],
re-entry vehicle.
MAS 1 Military Agency for Standardization (NATO).
2 Military area services.
3 Military assistance sales (DoD).
4 Middle airspace service.
5 Micro autonomous system.
6 Morphing aircraft structure.
MASA Multi-arm spiral array.
MASC Maritime airborne surveillance and control;
also renedered as maritime air surveillance capability.
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