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transponder tango
transponder tango Code for IFF Mk X basic (DoD).
transport Aircraft designed for carrying ten or more
passengers or equivalent cargo and having MTOW
greater than 12,500 lb (5,670 kg). Note: this was originally
US usage, where * British meaning is called transportation,
which also means ticket.
Transportation Security Administration Formed after
9–11 [2001] as part of DoT but separate from FAA (US).
transport equation Complicated integral/differential
equation by Boltzmann for distribution function in fluid,
eg gas at low pressure, subject to flow and intermolecular
collision.
transporter 1 Land vehicle, usually large and for offroad
use, for carrying large missile or other mobile system
or system element.
2 Airside vehicle for ULD.
transporter/erector Transporter for ballistic missile or
large radar which also erects its load into firing or operating
position. Hence **/launcher, which also fires
missile.
transporter mast See next.
transporter tower Airship mooring mast on mobile base.
transport joint Joint between major portions of structure,
eg between centre section and outer panel,
dismantled for transport (US transportation) in another
vehicle.
transport support Airborne delivery of stores and/or
personnel by airdrop.
transport wander See apparent wander.
transputer Transmitter plus computer with integrated
signal-processing architecture.
trans-sonic See transonic.
transuranium elements Also called transuranic, those of
atomic number higher than 92 (uranium); not occurring
in nature but produced by nuclear reactions.
transverse Though this means athwartships or sideways
it is often related not to basic vehicle axes but to major axis
of local part; thus in wing it is common to consider spar
as longitudinal and ribs as *.
transverse axis OY, pitch axis, parallel to line through
wingtips.
transverse bulkhead See bulkhead.
transverse electric See transmission modes.
transverse-flow effect In helicopter translational flight
air passing through main rotor is initially at higher level
and that passing through rear of rotor disc is accelerated
as it passes across top of rotor; ** is differential lift caused
by this difference in relative wind, causing blades in rear
part of disc to flap upward. Note: in this usage transverse
means longitudinal.
transverse load One acting more or less normal to major
axis of member, thus tending to bend it; thus weight of
fuselage forms ** on wing.
transversely isotropic Materials having uniform elastic
properties in one plane, independent of axis of testing.
transverse magnetic See transmission modes.
transverse member Structural member running across
from side to side; in wing and other aerofoils often interpreted
as in chordwise direction.
transverse Mercator Map projection in which meridian
is used as false equator; map is that produced by light
source at Earth centre projecting on to cylinder wrapped
round Earth touching along selected meridian, if necessary
passing across pole. Parallels near pole almost
travel[l]ing wave
circular but become ellipses of increasing elongation until
Equator is straight line; great circles are straight lines
parallel to selected meridian, otherwise complex curves.
transverse pitch Perpendicular distance between two
rows of rivets.
transverse wave Displacement direction of each particle
is parallel to wave front and normal to direction of propagation;
includes EM waves and water-surface waves.
Trap, TRAP 1 Terminal radiation airborne measurements
program; note, not Tramp.
2 Tactical related applications.
3 Tactical recovery, aircraft and personnel (USAF).
trap 1 Radio receiver, subcircuit which absorbs
unwanted signals.
2 In ultrahigh-vacuum technology, device which
prevents vapour pressure of mercury or oil in diffusion
pump from reaching evacuated region.
3 Rare filter in solid-propellant rocket to prevent
escape through nozzle of unburned propellant.
4 Hollows in piston-engine rotating components in
which oil sludge collects by centrifugal action.
5 See flame trap.
6 Verb, to make arrested landing on carrier.
7 Landing made as in (6).
Trapatt Trapped-plasma avalanche-triggered transit
device.
trapeze bar 1 Transverse bar linking balloon basket
suspension to riggings attached to envelope, permitting
relative pitch but not yaw or roll; also called suspension
bar.
2 Transverse bar on underside of airship or large aerodyne
for attachment (including inflight release and
recovery) of aeroplane or other aircraft.
trapeze beam General name for beam pivoted to two
swinging parallel arms; also called bifilar suspension.
trapezium distortion Distortion of basic rectangular
image on CRT or other display, eg caused by unbalanced
deflection voltages.
trapezoidal modulation Involves changing waveform
from sinusoidal to near-trapezoidal, with 95% modulation
straight-top.
trapezoidal section Supersonic wing section looking like
extremely flat shallow rhombus with flat top and bottom
joined by wedge leading/trailing edges both on upper
surface.
trapezoidal wing Usually means one whose plan is *, not
section; in most cases leading and trailing edges are both
at 90° to flightpath, joined by tips with straight rake which
is usually negative and at Mach angle.
trapped fuel That fuel always remaining in tanks, in
worst case on ground using booster pumps for defuelling
and switching off immediately associated LP warning
lights illuminate.
trapper CFS examiner (RAF colloq.).
trapping Process by which particles are caught in
radiation belts.
trap weight Maximum weight permitted for arrested
carrier landing.
TRASR Tactical remote assessment/surveillance radar
[through-wall sensor].
travel[l]ing wave A transverse structural deflection
which moves along a linear structure in various modes
defined by string theory.
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