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tip loss factor
tip loss factor Correcting factor in calculating lift of
rotorcraft lifting rotor to allow for tip loss, usually 0.96+.
tip-path plane Plane containing path of tips of helicopter
or other rotorcraft main lifting rotor blades, tilted in
direction of travel or horizontal acceleration.
tipping See propeller tipping.
tip pod Streamlined container carried centred on or
below tip of aerofoil.
tip radius Usually synonymous with radius.
tip rake See rake.
Tips, TIPS 1 Total integrated pneumatic system (C-5).
2 Telemetry integrated processing system (AFSC).
3 Technical issue panels (FAA).
4 Transatlantic industrial proposal solution[s] (AGS6).
tipsail See winglet.
tip shroud Shroud 1.
tip speed Tangential speed of rotating tip of propeller or
rotor due solely to its rotation and ignoring superimposed
vehicle airspeed; i.e., V = rϖ, radius multiplied by angular
velocity.
tip-speed ratio Helicopter forward [or whatever direction]
speed divided by main-rotor tip speed, symbol µ.
tip stall Stall of tip of aerofoil, esp. wing, while
remainder of surface remains unstalled; common condition
caused mainly by higher lift coefficient at tip unless
stall strip applied inboard.
tip tank Fuel tank formed as streamlined body, jettisonable
or otherwise, carried centred on or below wingtip.
tip trailing vortex See vortex.
tip vortex See vortex.
TIR 1 Total indicator reading.
2 Target-illuminating radar.
3 Tracking and illuminating radar
4 Thermal-imaging radar.
5 Traffic information radar.
6 Thermal infra-red.
7 Twin intermeshing rotors (helicopter).
TIRC Tactical IR countermeasure.
tire UK spelling ‘tyre’ is used in this dictionary.
tiredness General deterioration of airframe caused by
long and intensive use, primarily manifest in repeated
cyclic loading and successive severe gusts but also
including superficial damage caused by impact of steps,
ground vehicles, stones etc; no significant crack need be
present but many structural parts will not be original and
many boltholes will be oversized and re-reamed for bolts
of increased diameter.
Tiros TV/IR observation satellite[s].
Tirp Terminal instrument radar procedure.
TIRS Transverse-impulse rocket subsystem (planetary
lander).
TIRSS Theatre intelligence, reconnaissance and
surveillance study (USAF).
TIS, tis 1 Tracking information (or instrumentation)
subsystem.
2 Thermal-imaging sensor, or system.
3 Tactical Intelligence Squadron.
4 Traffic information service(s) [aircraft-position
datalink, ground or airborne receiver].
5 Tactical input segment (satellite).
Tisar Terrestrial inverse SAR.
Tis-B Traffic information service, broadcast (FAA).
TISD Tactical Information Systems Division (Langley
AFB).
T/L
Tiseo Target-identification system, or sensor, electrooptical.
TISH, Tish Thermal-imaging sensor head.
Ti6Al4V See Ti.
TISR Total inflight-shutdown rate.
TISS, Tiss Thermal-imaging security system, or surveillance
system.
TIT Turbine inlet temperature; see turbine temperatures.
tit Any control button, especially to fire guns (UK,
colloq., WW2).
Titan Thunderstorm identification, analysis and
‘nowcasting’, under development from 1990s (USWB,
NASA, FAA).
titanium Ti, hard silvery metal, density 4.5, MPt
1,660°C, reactive but bulk metal passivated by
oxide/nitride coating in atmosphere, vast range of aerospace
uses, main tonnage Ti-Al-V alloys, seeTi.
titanium aluminides Rapidly growing range of refractory
(820°C) metals with properties marred only by poor
toughness and ductility.
Tite Tews intermediate test equipment.
title block Standardized rectangular format on drawing,
usually lower right corner, listing title, part numbers, mod
states, names of draughtsmen/tracers etc, dates and other
information.
titles Name of owner or operator painted on commercial
or GA aircraft, to be read from a distance.
TIU Time insertion unit.
TIV Tactical intervention vehicle.
TIVO US piston-engine designation: turbocharged,
direct injection, vertical crankshaft (for helicopter),
opposed.
TIW Total[ly] integrated warfare.
TIZ Traffic information zone.
TJ Turbojet.
TJAG The Judge Advocate-General.
TJF Transportable JTIDS facility (RAF).
TJRJ Turbojet/ramjet or turboramjet.
TJS Tactical jamming system; R adds receiver, T transmitter.
TK 1 Turbocharger (R, G).
2 Thermal keel.
Tk Track, track angle.
TKE, TkE Track-angle error.
TKF 1 Tactical combat aircraft (G).
2 Takeoff, also TKO,Tkof.
TKM Tonne-kilometres.
TKOF, tkof Takeoff.
TKP 1 Tonne-km performed; basic measure of airline
traffic.
2 Transport clearing house (R).
TKS Chemical de-icing pastes and pumped liquid (typically
60% aqueous solution of glycol), from
Tecalemit/Kilfrost/Sheepbridge-Stokes.
TKT Sandwich of Teflon/Kapton/Teflon, uniquely
resistant even to electric arcing.
TL 1 Thermoluminescence.
2 Transition level.
3 Transmission loss.
4 Until.
5 Terminal location (Acars/AFEPS).
6 Turbinen-luftstromtriebwerke = turbojet (G).
T/L Top level.
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