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takeoff weight
takeoff weight 1 See MTOW.
2 Actual weight at takeoff (2) on particular occasion.
TAKEOVER In HUD or as caption: autopilot has
disconnected.
T-AKX Ro/Ro ship commandeered in emergency for
RDF.
TAL Transatlantic abort landing (Shuttle).
talbot MKS unit of luminous energy; 1*/s = 1 lm.
TALC Tactical airlift center (USAF).
TALCE Tactical, or tanker, airlift control element
(USAF).
TALCM Tactical air-launched cruise missile.
TALD 1 Tactical air-launched decoy [vehicle or
mission].
2 Tactical airborne laser designator.
Taleos Terrain-aided localization using EO sensors.
talkdown Landing, esp. in bad visibility, using GCA.
talk-through Facility whereby two mobile radio stations
communicate via a base station.
tall aircraft One calling for LEW technique or experience.
tall-aircraft VASI See T-VASI.
Tallboy Armour-piercing bomb, 12,000 lb [5443 kg]
(RAF WW2).
Tallboy torch Turbinlite.
Tally Visual sighting of air-to-air target (RAF).
Tally Ho Air-intercept code: target visually sighted.
Normally followed by Heads Up or Pounce (DoD).
Talon 1 Theater application launch on notice.
2 Technology for advanced NO x .
Talon(s) Tactical airborne Loran (system).
TALT Tactical arms limitation talks.
TAM 1 Technical acknowledgement message (ICAO).
2 Time and materials [contract].
Tamaca Tactical mid-air collision avoidance.
T amb Ambient air temperature.
Tamda Tactical acoustics measurement and decision
aid.
TAMF Training Aircraft Maintenance Facility (DARA
St Athan).
Tammac Tactical airborne, or aircraft, moving-map
capability.
Tamps Tactical automated, or aircraft, missionplanning
system.
Tams 1 Total-airport management system.
2 Transportable automated meteorological station.
TAN Tananarive [tracking station], now called
Antananarivo.
Tana, TANA Two-point adaptive non-linear approximation[s].
T&B Turn and bank.
T&E Test, or trial, and evaluation.
tandem actuator Has two pistons or jacks on same axis,
with linear output.
tandem bicycle gear Two main landing gears on centreline.
tandem boost Rocket boost motor(s) mounted directly
behind main vehicle, staging rearwards at burnout.
tandem clapping aerial swimmer Small (the first was
19.5 kg, 43 lb) electrically powered aircraft with four
reverse-cambered aerofoils which clap against each other
in alternate pairs (NRL).
tandem-fan engine Gas turbine with single core driving
front and rear fans on common shaft projecting ahead of
Tans, TANS
engine; fans can have shared inlet for conventional flight
or valved separate inlet and exits for V/STOL.
tandem main gears Two or more similar main gears in
tandem on left and on right, as on C-5 or C-17.
tandem parachute descent Two people in close contact,
or one parachutist and a suspended load.
tandem rotors Helicopter lifted by two (usually identical
but handed) rotors, designated front and rear.
tandem seating One behind the other, in combat aircraft
usually with rear seat at higher level.
tandem vehicle One assembled from portions, eg stages,
assembled in tandem and staged axially, in contrast to
strap-on, lateral or other configuration such as Space
Shuttle.
tandem-wheel gear Two or more similar wheels in
tandem on one leg, ie not a bogie.
tandem-wing aircraft One lifted by two wings in tandem,
neither bearing more than 80% of total weight.
T&M Time and material [contract].
T&O Training and operations.
T&R Training and Readiness (USN).
T&S Turn and slip.
Tanegashima Principal Japanese satellite launch
facility.
tangential ellipse See Hohmann.
tangential landing Running landing by rotorcraft or
VTOL.
tangential on-board injection An advanced method of
cooling gas-turbine rotor blades by preventing gas/metal
contact.
tangent modulus Slope of tangent to stress/strain curve
at any point, symbol E t .
tangent of camber In aerofoil profile, line drawn tangent
to mean camber line at intersection with leading edge, in
modern wings occasionally negative (sloping up to front).
TANGO, Tango Technology application to the nearterm
business goals and objectives, 34 partners in 12
countries with part-EU funding.
Tango 1 Standard ground position marker in shape of T
(RAF).
2 Turbulent (Airmet advisory).
tank 1 Container of all fuel, liquid, propellant, lube oil,
hydraulic fluid, anti-icing fluid or toilet chemical, and
often gun ammunition; not used for containers of
breathing Lox, air-conditioning refrigerants, potable
water or supressant/extinguishant.
2 Verb, to fly air-refuelling tanker, QTDN, quatified to
tank day or night.
tankage Aggregate capacity of all tanks for particular
fluid.
tank circuit Tuned RF circuit with capacitor and
inductor in parallel.
tanker Aircraft equipped for inflight refuelling of
others.
tank farm Cluster of storage tanks, usually for fuel, at
airport.
tank pump Booster pump.
tank sealer Various thermoplastic liquids, resistant to
hydrocarbon fuels, sloshed inside integral tankage to seal
all interior surface; today superior methods of wet
assembly and multiple coatings are used.
tank vent Vent (1).
Tans, TANS Tactical air navigation system; airborne
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