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T
T 1 Temperature, esp. absolute.
2 Tesla[s], nT being more common.
3 Prefix tera, 10 12 .
4 Aircraft designation, transport (USA 1919–24),
torpedo [carrier] (USN 1922–35), transport (USN
1927–30), trainer (RAF, RN, since 1941, USN, USAF,
since 1948).
5 Modified mission, suffix, two-seat trainer version
(USN 1946–62), prefix, trainer version (USAAF, USAF,
1943 to date).
6 Time of day, or in countdown, or of a sample in gust
calculation. In US increasingly used in place of t(1).
7 Transmitting, or transmits only.
8 Thrust (F preferred); helicopter main-rotor thrust
vector.
9 Torque.
10 Period.
11 Kinetic energy.
12 Aircraft has transponder with 64-code but no altitude
encoding.
13 Short ton[s], usage usually confined to NW yield.
14 Navaid terminal frequency.
15 Designation suffix, turbocharged [piston engine].
16 Designation prefix: turboprop.
17 Tropical air mass.
18 Class: light autogyro (BCARs).
19 Twin-wheel landing gear[s].
20 Terrain-clearance altitude.
21 Airport terminal, followed by number.
22 Tracer.
23 Radar-target strength.
24 Electrochemical transport number (also t).
25 Threshold lights, lighting.
26 See basic T.
27 True [headings].
28 Designation suffix: fully heat-treated.
29 A small T-shaped hangar for one [usually small
private] aircraft.
30 Training, also (T).
t 1 Time, especially elapsed time in seconds.
2 Tonne[s].
3 Thickness, including maximum of aerofoil.
4 Triode.
5 Turns.
6 One revolution (F), as in t/min = rpm.
7 Often, non-absolute temperature.
8 Threads, eg in tpi (per inch).
9 Trend landing forecast.
10 As subscript, total pressure.
11 Main landing-gear track.
T 0 1 Free-stream total temperature.
2 Absolute temperature.
°T True heading.
T+ Severe thunderstorm.
t^ Non-dimensional time [in structural analysis].
T 1 Compressor or fan inlet total temperature.
T 2 Total time.
T 2 A Total-terrain avionics.
T 2 CAS 1 Taws-TCAS; the box still fits a single LRU.
2 Traffic and terrain collision-avoidance system.
T 3 Tailplane trimming tank.
T 3 HP turbine inlet temperature (can have other
meanings).
T 3 CAS, T3CAS Comprised of TCAS, Class A TAWS
and Mode S transponder.
T 4.5 Common US usage for power-turbine inlet temperature.
T 6 or T 7 Total turbine exit (outlet) temperature.
T-aerial Aerial [antenna] comprising a wire from the top
of the fuselage or mast to the tip of the fin, with a quasivertical
connection from near mid-point to the radio
installation.
T-bridge Telescopic, usually means apron-drive.
T-channel TDMA channel for air/ground data messages
too long for R-channel (GPS).
T-forces Specialized, often inter-Service, military units
assigned a mission to obtain and investigate specific
enemy equipment items or facilities (1944–, OSS, later
CIA).
T-hangar Wide front for wing, narrow rear for tail,
usually arranged in two rows back-to-back to make full
use of ground footprint [usually 30 × 24 ft or 40 × 30 ft].
T-layer Notional top of the ionosphere.
T-rail Standard longitudinal floor rail tailored to
receive pax seats, cargo tie-down rings or stretcher
racking.
T-stick Thermally sensitive indicator inserted into
airline meal, changing colour at 71°C.
T-section Shaped like T or inverted T in cross-section.
T-Stoff HTP plus a little oxyquinoline or phosphate
stabilizer (G).
T-tail Aeroplane tail with horizontal surface mounted
on top of fin (vertical stabilizer).
T-time Reference time in countdown, often that for start
of engine ignition.
TA 1 Trunnion angle (INS).
2 Telescoped ammunition.
3 Twin-aisle (transport).
4 Target alert, or acquisition.
5 Terrain avoidance.
6 Tuition assistance.
7 Transition altitude (CAA).
8 True altitude.
9 Trainer, aircooled (USA 1919–24).
10 Ambient temperature.
11 Terrain-clearance altitude.
12 Traffic advisory.
13 Technical assessment.
14 Terminal automation.
15 Towed array.
16 Technischen Ausschuss (DAeC).
Ta Tantalum.
T a 1 Actual temperature.
2 Radar antenna noise.
3 Tropical Atlantic.
t a Action time.
T/A Helicopter rotor disk [disc] loading.
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