1Dk4eXg

true course
true N) at observer and vertical plane through observer
and observed point.
true course Angle between aircraft longitudinal axis OX
and plane of local meridian (referred to true N).
true heading See true course.
true-historic display One showing what would have
happened, eg line showing locus of impact points where
bullets would have hit had they been fired.
true meridian Great circle through geographical poles.
true north Direction towards N pole of meridian
through observer.
true position Position of celestial body or spacecraft
computed from orbital parameters of Earth and body
without allowance for flight time.
true power Actual (I 2 R) power of a.c. electrical circuit.
true prime vertical Vertical circle through true E and W
points of horizon.
true stress That computed as force divided by true area
normal to the load, as distinct from Engineering stress.
true Sun Sun as it appears to Earth observer, as distinct
from mean, dynamic mean.
true track Angle between true N and aircraft path over
ground.
true vertical Local vertical, line passing through
observer and centre of Earth.
Tru-Loc Flight-control cable end-fitting swaged on by
machine with tensile rating equal to breaking strength of
cable.
truncation error EDP (1) error resulting from use of only
finite number of terms of infinite series, or from other
simplifying techniques, eg calculus of finite differences.
trunk 1 Large-section lightweight air-conditioning duct,
or duct between gasbag valve and gas hood.
2 Major route, with or without surrounding box
conduit, for large number of controls, services, cables,
wire looms and other lines.
3 * route or operator.
4 Compartment for baggage or general storage in GA
aircraft (US usage derived from cars).
trunk route 1 Most important type of commercial route,
eg between largest cities in country or countries, offering
highest traffic. Hence * operator, domestic *, * traffic.
2 Established air route along which strategic moves of
military forces can take place (NATO).
truss Rigid load-bearing planar structure of spaceframe
type, usually comprising essentially horizontal upper and
lower chords linked by various vertical and diagonal
members.
trusted Generalized description of network elements
meeting specific measures of security.
truth table EDP (1) technique where coded signals are
allocated to particular addresses, comprising series of
adjacent address codes and output codes.
TRV 1 Terminal rendezvous point (army helicopters).
2 Tower restoral vehicle (USAF).
3 Thermal relief valve.
TRVR Touchdown runway visual range.
TRW 1 Tactical Reconnaissance Wing (USAF).
2 Thundershower (ICAO).
TRX Threat ready X-ray [airport security].
try-again missile Conceptual AAM of 1950s which,
finding initial interception was outside design manoeuvre
limits, made programmed turn for second attempt.
tryptique See carnet.
TsENTROSPAS, TsentroSpas
TS 1 Thunderstorm (ICAO).
2 Transport, or Training, Squadron, or service.
3 Transattack survivability, i.e. a post-strike system.
4 Thunderstorm sensor.
5 Track system (UAV).
6 Torpedo-bomber/scout (USN 1943).
7 Two-stroke.
8 Transmitter segment.
9 Turbosupercharged (Satcom).
10 Time source.
Ts 1 Static temperature.
2 Note: Russian ‘Ts’ in this dictionary is rendered as C.
T S 1 Total noise of radar system.
2 System equivalent noise temperature.
3 Sampling interval time.
T-S Graphical plot of absolute temperature (ordinate)–
against entropy per unit mass of fluid S. Fundamental
diagram in thermodynamics.
TSA 1 Training systems acquisition.
2 Tail-strike assembly (USAF).
3 Transportation Security Administration (US, from
2001).
4 Traffic separation assurance (NASA Ames).
TSAAC TSA(3) Access Certificate, required by Pt 91
operators in order to fly to airports normally accessible
only to scheduled carriers.
TSAFE TSA4 flight environment.
TsAGI Common Western rendition of Central Aero
and Hydrodynamics (research) Institute (USSR, R).
TSAM Tri-Service Attack Missile (US).
T s and P s Temperatures and pressures.
TSAP Transport service access point.
TSAR, Tsar 1 Tactical and strategic advanced reconnaissance.
2 Theatre search and rescue.
TSAS Tactile situation-awareness system.
TSAT, T-sat Transformational [communications] satellite.
TSB Transportation Safety Board [Québec K1A 1KB]
(Canada).
TSC 1 Transportation Systems Center (US DoT).
2 Triple store carrier.
3 Tactical Support Center (USN).
4 Term service commitment.
5 Training system contract.
6 Terrorist Screening Center [FBI and other agencies]
(US).
7 See TSCP.
TSCM 1 Technical surveillance countermeasure(s).
2 Tactical-strike coordination module (Tamps).
TSCSSS, TSCS3 Transformational satellite communications
system space segment (USAF).
TSCP Transport security collaboration program[me].
(US + European defence and aerospace).
TSD 1 Tactical situation display.
2 Traffic situation display.
3 Time/speed/distance.
TS diagram Plot of temperature against entropy, a
closed 4-sided figure.
TSDIU Transport service data-interface unit.
TSDS Telemetry storage and display system (UAV).
TSE Total system error.
TsENTROSPAS, TsentroSpas English renditions of
723