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master engine
bases are shut by weather or enemy action, and promulgated
as such.
master engine When all engines of a multi-engined
aircraft are synchronized, that to which the other engines
are slaved.
master oscillator That defining timebase and waveform
for radio or radar.
Master Pilot 1 Formerly, highest grade of commercial
B-licence [5 + years and other requirements] (UK).
2 Highest rank in unpopular ‘aircrew’ system [1947–53]
(RAF).
master rating In certain air forces, highest level of
aircrew proficiency in each trade.
master rod Connecting rod with big end and with
attachments for all other rods in same plane.
master router template Flat template, usually same size
as metal sheet or slab, used to locate pilot and pin holes
and set up sheet for routing or skin-milling by non-NC
control.
master station Various meanings, esp. that housing
timebase and emitting original signals in R-Nav hyperbolic
systems, other stations being slaves keyed to it.
master switch Makes or breaks generator main line,
must be ON to start engine[s].
Master systems bench Ground installation duplicating
complete avionics and flight-deck display systems.
master template Reference for any form, usually twodimensional,
in manufacture; used to make jigs and
tooling.
Mastif Multiple-axis spin-test inertia facility.
Mastiff Modular automated system to IFF.
mast-mounted sight Group of sensors, typically optical,
FLIR, laser, mounted on anti-vibration mast above helicopter
rotor hub to allow crew to see targets without
exposing helicopter.
MASU 1 Multiple acceleration sensor unit.
2 Military Aviation Storage Unit (DARA Fleetlands,
UK).
3 Mobile Aircraft Support Unit (RN).
MAT 1 Modification aproval test.
2 Moscow aviation technical high school.
3 Modular advanced test (Raytheon).
4 Maintenance-access terminal.
mat 1 Flexible membrane laid on unprepared ground
for limited number of V/STOL operations.
2 Area paved with quick-assembled metal mesh or
planking.
3 Floating support towed by ship for recovery of
marine aircraft.
Matac, MATAC Tactical air command (Spanish air
force, EdeA).
MATC Mobile ATC (1).
Matcals Marine (or Mobile) air-traffic control and allweather
landing system (USMC).
Match Manned [or medium] anti-submarine troop- [or
torpedo-] carrying helicopter.
matched pole-zero For approximate conversion of a
continuous transfer function into a discrete one by
mapping both poles and finite zeros into the z-plane.
match fitness Physiological ability of pilot to pull
extreme accelerations in close-combat training.
matching 1 Any prolonged process of developing
dynamic parts to work properly together; eg inlet/
MAU
engine/propelling nozzle over wide range of Mach
numbers.
2 Achieving maximum energy transfer between electric
circuits or devices by equalizing impedances and resistive/
reactive components.
Matcon Mobile air-traffic control unit (civil).
Matcu Marine air-traffic control unit (USMC).
MATDSS Maritime aircraft tactical decision support
system.
Mate 1 Modular automatic test equipment
(Grumman).
2 Modular Autodin terminal equipment (Astronautics
Corp.).
3 Man-portable aerial terrain explorer.
Matelo Maritime air telecommunications organization
(UK).
materiel US term for hardware, logistic supplies, esp.
military (but specif. excluding ships and naval aircraft);
accent is on last syllable.
Matias Magyar air-traffic integrated and automated
system (Hungary).
mating Offering up major portions of aircraft and
joining together; the mass-production equivalent of
marrying up. Thus * jig.
Matlab Software code widely used in aerospace.
MATO, Mato Military air-traffic operations (UK).
MATP Military-aircraft tractor positioner, for
confined spaces.
Matra, MATRA Air-transport command (Spanish air
force, EdeA).
Matrix Multi-service automatic target-recognition
imagery exploitation.
matrix 1 Computer memory core of rectilinear array
configuration, eg 2-D ferrite three-wire type.
2 Crystalline grain structure of metal.
3 Skeletal basis on which structure is formed, esp. by
moulding.
4 Any 2-D rectilinear logic network.
MATS 1 Military Air Transport Service (USAF/USN
1 June 1948, on 1 June 1966 became MAC).
2 Multi-altitude transponder system.
3 Manufacturing assembly tracking system.
4 Military-aircraft target system.
5 Miniature aerial target system.
MATSS 1 Mobile aerosat [not aerostat] tracking and
surveillance system.
2 Maritime aerostat tracking and surveillance system.
MATT Multimission advanced tactical terminal (US
Services).
matt Non-reflective, external finish (usually paint)
tending to diffuse EM radiation incident on it.
MATTS Multiple airborne target trajectory system.
maturation US term for growth of maturity, arguably =
ageing.
maturity Vague condition after impressive number of
flight hours in which major problems naively thought
unlikely. Supposed methods exist for quantifying degree
of * for both new and derived equipment.
maturity factor GDP growth yield growth traffic
growth.
MATV Multi-axis thrust vectoring.
MATZ Military air (or airfield or airport) traffic zone.
MAU 1 Marine amphibious unit (USMC).
2 Million accounting units (EC).
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