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tantalum
computer storing many waypoints and fed by other inputs
(eg Doppler, magnetic heading).
tantalum Ta, shiny metal, MPt 2,996°C, density 16.7,
important in refractory alloys. A carbide is harder than
diamond.
TAO Test automated operations.
TAOC Tactical air operations centre (RAF/Army).
TAOM Tactical air operations module.
TAOR Tactical area of responsibility (UK).
TAP 1 Terminal approach procedure[s].
2 Air-transport regiment (R).
3 Tactical autopilot, or technology.
4 Technical, or technology, assessment program[me].
5 Terminal-area productivity, or planning.
tap 1 To bleed; hence tapping, pipe for bleed air.
2 To cut threads in drilled hole; also tool for doing this.
3 Electrical power wire connected to main conductor at
point along latter.
4 Engine throttle or power lever (colloq.).
TAPA 3-D antenna pattern analyser (USAF ECM).
Tape Total airport performance and evaluation (Euret).
tape 1 Main meaning in aerospace is as medium for software,
usually magnetic or punched paper.
2 One form of CF or other reinforced-plastics prepreg,
used for layups or moulding but seldom for filament
winding.
3 Pinked-edge fabric strip used for surface finishing
(surface *).
tape control Automatic control, eg of machine tool, by
tape (1).
tape instrument Cockpit instrument whose presentation
is based on linear tape driven over end spools, usually in
conjunction with fixed and/or movable index pointers or
bars. Usually vertical, as in VSFI.
tapelayer Computer-controlled tool for laying-up
prepreg tape in manufacture of composite parts; automatically
positions, starts, stops and dumps material
rejected during prior editing.
tape lay-up The parts produced by the tapelayer.
tape mission Reconnaissance of Elint type in which
digital (eg signal) or digitized pictorial information is
stored on 7-track magnetic tape from which whole
mission profile can be assigned to exact ground track,
with each hostile emitter or other target assigned to
precise location and timing.
Taper Turbulent air-pilot environment research
(1960–65 NASA-FAA).
taper For given wing section profile * equal in plan and
thickness, usually defined as straight or compound; in
some aerofoils * not equal in plan/thickness so section
profile changes.
tapered-roller bearing Use of tapered rollers enables
such a bearing to resist axial [endways] loading.
tapered sheet Thickness varies (usually at uniform rate)
along one axis.
taper ratio Normally defined as ratio of tip chord C t to
either root chord or equivalent centreline chord C c .
Common rendering, R T = C t /C r .
taper reamer Used to smooth and true previously
tapped hole.
taper tap Hand-turned tap (2) to initiate thread cutting.
Tapley meter Damped pendulum in heavy stable case
whose limit of swing feeds record of instantaneous or
target allocation
maximum vehicle deceleration; not suitable for runway
friction measures.
Taps, TAPS 1 Tercom aircraft (or tracking and) positioning
system.
2 Terminal applications processor system.
3 Target analysis and planning system.
4 Twin annular pre-swirl, or premix swirler.
5 Total, or towed, airborne plume simulator.
taps Throttles (colloq.).
tap test Crude search for delamination or other flaw in
composite structure, typically with a coin.
TAR 1 Terminal-area surveillance radar (ICAO).
2 Terminal approach radar.
3 Thrust auto reduce (SST).
4 Threat-avoidance receiver; passive ECM.
5 Trials ATN router.
6 Test action request.
Tara Terminal and regional airspace.
Tarad Tracking asynchronous radar data.
Taran 1 Tactical attack radar and navigation.
2 Test and repair as necessary.
Taras Tactical [digital] radio system (Sweden).
Tarasov-Bauer Computer-based method of smoothing
out judge’s scores to eliminate highest and lowest (CIVA).
TARC 1 Transport Aircraft Requirements Committee
(UK 1956–62).
2 Tactical air reconnaissance center (USAF).
Tarcap Target combat aircraft practice (practise), or
patrol.
Tardis Tornado advanced radar display and information
system.
TARE, Tare 1 Tactical air reconnaissance equipment.
2 Telemetry, or telegraph, automatic relay equipment
(NATO).
tare Unladen, without load, crew or fuel; normally used
only in connection with surface vehicles, except for ULDs,
where * includes linings and fittings according to specification
or registered with IATA.
tare effect Forces and moments on tunnel model caused
by support-structure interference.
tare weight allowance Free allowance given by IATA to
shippers for ULDs not owned by members.
tare-weight objective Non-mandatory target weight for
a ULD.
TAREWS, Tarews Tactical air reconnaissance and
electronic-warfare support; RPV (USAF).
TARG, Targ Telescoped ammunition revolver gun.
Target Training and rehearsal generation toolkit.
target 1 Objective of air-combat mission, either in air or
on surface.
2 Objective of intelligence or Elint activity.
3 Any true echo (blip) seen or radar, and object causing
it.
4 Objective of any missile.
5 To insert position co-ordinates of fixed surface * into
guidance software of ballistic or cruise missile; also called
targeting.
6 Unpiloted (towed or RPV) aerodyne serving as target
for friendly fire.
7 Aircraft within surveillance range of TCAS.
target acquisition Detection, identification and location
in sufficient detail for effective employment of weapons.
target alert EFIS warning of future turbulence.
target allocation In air-defence weapon assignment,
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