MiGMan’s Flight Sim Museum

MiGMan’s Flight Sim Museum

Definitions

A/P
AboutAirport or Autopilot.
AGM | AG: Guided
AboutAir to Ground Missile
AIAA
AboutArea of Intense Aerial Activity, usually military
AIM
AboutAir Intercept Missile
Air Strike
AboutAir attack against the enemy's Command, Control, Communications and Intelligence nodes, key production facilities, and transportation infrastructure - in other words, against his homeland, national interests, resources and war-making capacity. The objectives of an Air Strike campaign can range from sustained attacks to destroy the war potential of an enemy nation, to a single strike as an expression of political will.
Air to Air
AboutAir to Air. Can refer to ordnance or mission type.
Air to Ground
AboutAir to Ground. Can refer to ordnance or mission type.
Air traffic
AboutAircraft operating in the air or on an airport surface.
Airbrake
AboutPart of the a/c surface which is extended during flight to create extra drag and therefore reduce airspeed.
Aircraft Captains
AboutThe Aircraft Captain is to be responsible for the safety of the aircraft and occupants over land and water. In any aircraft in which instruction is being, the flying instructor is the aircraft captain. Responsibilities of Aircraft Captains: Before flight the a/c captain is to file a flight plan for the a/c and to sign for responsibility for the a/c frame and components. After flight the a/c captain is to record any defect or unserviceability he has noticed in flight and report this to the officer in charge. (From Australian Army Flight manual)
Airspeed
AboutTAS = True Air Speed, IAS = Indicated Air Speed
Alpha
AboutAngle of Attack or AOA
Alt
AboutAbbreviation for Altitude in feet.The device which displays altitude to the pilot is called the Altimeter.
Alternate
AboutAerodrome specified on a flight plan to which an aircraft chooses to divert if a landing at its intended destination is not possible (for reasons of poor weather for example).
Altimeter
AboutBarometric Altimeter | It displays your attitude above sea level (ASL).That is why is is particularly important to make a note of the runway altitude before takeoff. Radar Altimeter / AGL (Above ground Level) lndicator.
Ambient
AboutChill out to relaxing footage I've taken of the world in Microsoft Flight Simulator
AMRAAM
AboutAdvanced Medium Range Air-to-Air Missile. A fire-and-forget weapon. Once the missile has been released you are free to manoeuvre.
Analogue
AboutElectronic system in which quantities are represented by variations in electrical signals (i.e by electrical analogues)
Angels
AboutAltitude expressed as 1,000's of feet. e.g. Angels 3 = 3,000 ft
Angle of Attack or AOA
AboutAlso known as alpha.The angular difference between the wing and the direction of the airflow.Represented on the HUD by the difference between the FDI and the FPI. Most important to monitor during landing and any low speed flight.
Anhedral
AboutDownward angle of wing or tailplane. e.g. Look at the tailerons on the F-4G Phantom.
APC
AboutArmoured Personnel Carrier. e.g. M-113 Often seen in base security detachments at US Air Force and Marine bases.
ASI
AboutAirSpeed Indicator, a flight instrument which measures the speed of an aircraft through the air.
ASL
AboutAbove Sea Level
ASM
AboutAir to Surface Missile
Aspect Ratio
AboutRatio of the wingspan to the wing area, expressed as span squared divided by wing area.
ASR
AboutAir-Sea Rescue. (see SAR) This role is usually fulfilled by helicopters, e.g. SH-60
ASRAAM
AboutAdvanced Short Range Air to Air Missile, replacement for the AIM-9 series, underdevelopment.
ATC
AboutAir Traffic Control. These guys will give you clearance to take-off and land.
Authorization of Flights
AboutEvery flight is to be authorised by the commanding officer of the unit concerned.
Autopilot
AboutSystem which takes control of an aircraft, relieving pilot workload. There are many different types of a/p. The Most basic will hold altitude and heading. If linked to an INS, the a/p can fly the a/c via preprogrammed altitude, air'speeds and headings to a predetermined point in space.
Autorotation
AboutRefers to unpowered flight in a helicopter, usually in a downward direction!
AUW
AboutAll Up Weight.The total loaded weight of an aircraft. Note that the LOAD ORDNANCE screen will not let tou take off if your AUW exceeds the allowed figure.
Auxiliary rotor
Aboutthe rotor (on the tail boom ) of a helicopter which counteracts the tendency of the main (lifting ) rotor to yaw the a/c.
AWACS
AboutAirborne Warning and Control System. Also see HVAA and LDHD.
AWARDS
AboutFlying Badges and Military Symbols
Azimuth
AboutBearing or direction in the horizontal plane.
Barometric Altimeter
AboutThis device controls the alt readouts on your HUD.It shows altitude above sea level.
Bat Turn
AboutA very tight 180 degree turn (as executed by the Batmobile or F-16).
Battle of Britain | BOB
AboutBattle of Britain. A 6 week period of intense British versus German air activity during World War 2, at the conclusion of which Hitler's plans for invasion of Britain were deferred.
Battlefield Interdiction
AboutClose Air Support - Suppress, delay or interrupt the activities of enemy ground forces.
BINGO
AboutFuel State at which Return To Base (RTB) must be initiated..
Birdstrike
AboutCollision with a feathered friend..
BIT
AboutBuilt in Test, self testing systems fitted to most modem avionics..
Bogey
AboutEnemy a/c.
Bogey Dope
AboutBearing, range, altitude of enemy a/c.
Bolter
AboutTouch and go carrier deck landing, usually executed because of a bad approach or missing the arrestor wires.
Boundary Layer
AboutThin layer of slower moving air which tends to cling to the skin of an aircraft.
Bravo Sierra
AboutBull Shxt, opposite of Sierra Hotel.
BRG
AboutBearing, the horizontal direction to or from any point expressed in degrees of the compass..
Bug Out
AboutDepart the area.
BVR
AboutBeyond Visual Range.Weapons such as AMRAAM and PHOENIX are BVR missiles..
Bypass Ratio
AboutRatio of total volume of air passing through the engine to that passing through the core section.
C3
AboutCommand, Control and Communications. Disrupting the enemy's C3 network degrades his capacity to wage war. Typical targets include Command bunkers, radar and communication installations.
Caisson disease
AboutNitrogen narcosis - "the bends".
Canard
AboutA smaller, forward wing. As seen on the Eurofighter, Rafale, Saab JAS-39
Canopy
AboutThe clear acrylic cockpit covering through which the pilot views the world.For the pilot driving a Per-sonal Computer, this translates to your monitor screen.Keep it clean and keep those greasy fingertips off! Make sure to use a soft cloth dampened with a suitable glass cleaning product. A clean canopy can be a life or death matter to any pilot, especially in combat. A MiG-21 coming head-on at 3 miles will be the size of a raindrop on your canopy. A missile is even smaller. Moral of the story, don't dogfight in the rain and keer) the canopy clean!.
CAP
AboutCombat Air Patrol. Subspecies are: TARCAP, BARCAP, RESCAP.
Cardinal Directions
AboutNorth, South, East and West. see Compass Headings.
CARQUAL
AboutCarrier Qualifications.
CAS
AboutClose Air Support.
CAS
AboutCalibrated Airspeed -- indicated air-speed corrected for air density and compressibility..
CAT
AboutCatapult launching system as found on the Eisenhower and Clemencau class carriers..
CBU
AboutCluster Bomb Unit, Dispenses hundreds of submunitions. Effective against soft-skinned targets such as trucks, personnel. Largely ineffective against armour..
CCA
AboutCarrier Control Approach.
CH
AboutCompass Heading.
Charlie Time
AboutExpected time over ramp.
Check Six
AboutVisual check of the a/c rear quadrant, specifically for enemy a/c.
Circuit
AboutPattern around which aircraft fly when arriving at an airfield, usual rectangular and left handed.
Clearance
AboutAuthorization from air traffic control to proceed as requested or instructed.Used for ground and air manoeuvring, thus "cleared for take-off", "cleared flight-planned route", "cleared to descend" etc.
Clock
AboutAn analog with a sweep second hand is preferred. The INS provides a countdown function to the next waypoint on the HUD..
CNI
AboutCommunication - Navigation - Identification.
CO
AboutCommanding Officer
Comms
AboutCommunication(s).
Compass Headings
AboutNorth = 360 or 000, South = 180, East = 090, West = 270
CRT
AboutCathode Ray Tube cathode ray (television) tube. Used in flight deck displays of new-generation airliners, business aircraft and military jets instead of conventional instruments..
cv
AboutAircraft Carrier.
DACT
AboutDissimilar Air Combat Training.
DECISION HEIGHT
AboutThe minimum height at which an overshoot must be initiated if a landing is not assured..
Deep Penetration Bombing
AboutOil refineries, supply depots, command and communication entres, munition factories, military bases. These missions usually follow a high-low-high profile: 1. High altitude - to conserve fuel, possible air- refuelling. 2. Low attitude - to avoid detection and interception. 3. High altitude - egress.
Departure
AboutThe point at which an a/c goes out of control (Departure from controlled flight).
Digital Altitude
AboutThis readout shows your altitude above sea level in feet. see HUD..
DME
AboutDistance Measuring Equipment.
Doppler
AboutRadar mode using Doppler Shift to determine range information.
Doppler
AboutDoppler effect (or shift) is the change in frequency of light, radio or sound waves when source and receiver are in relative motion..
DR
AboutDead (deduced) Reckoning.Plotting position by calculating the effect of speed, cour'se, time and wind against last known position..
Dual Controlled Aircraft
AboutThe captain of an a/c is to arrange before takeoff a clear and easily understood drill for handing over control of the a/c.."
EAT
AboutEstimated Approach Time, see Charlie Time.
ECCM
AboutElectronic Counter-Counter-Measuses.
ECM
AboutElectronic Counter-Measures.
EFATO
AboutEngine Failure After Take-Off refer to FLAME OUT checklist.
Ego Drivers
AboutF-15 pilots.
Electric Jet
AboutF16 Falcon aka "lawn dart"
EMCON
AboutEmission Control Refers to a flight during which the a/c emits no radiation. e.g. VHF or UHF transmissions, Radar, ECM.
ETA
AboutEstimated Time of Arrival.
FAC (Forward Air Controller)
AboutForward Air Control.
FAM
AboutFamiliarisation (as in FAM Flight).
Fangs Out
AboutGoing all-out for aerial victory.
FBW
AboutFly-By-Wire (Computer flight control system).
FEBA
AboutForward Edge of the Battle Area.
Finals
AboutFinal approach.That part of the Landing procedure in which the aircraft has made its final turn and is inbound to the active runway.system..
Flaperon
AboutControl surface doubling as flap and aileron.
Flight Plans
AboutBefore flight the a/c captain is to file a flight plan for the a/c and to sign for responsibility for the a/c frame and components. After flight the a/c captain is to record any defect or unserviceability he has noticed in flight and report this to the officer in charge..
FLIR
AboutForward Looking lnfra Red.
FM
AboutFrequency Modulated.
FOD
AboutForeign Object Damage to turbine blades through iingestion of runway debris etc..
Forum
AboutOnline discussion area set up to focus on a particular topic. In the 20th century newsgroups fulfilled this function.
Fox One
AboutPilot call on launching a Radar Guided AIM.
Fox Three
AboutPilot call on launching a Phoenix AIM.
Fox Two
AboutPilot call on launching an lnfra Red Guided AIM.
FPM
AboutFeet per minute, a measure of an aircraft's ROC rate of climb or ROD rate of descent.
Furball
AboutA multi a/c engagement.
G-Force, G, g
AboutGravity - the acceleration force due togravity.Use as a measure of the accelerative vectors a pilot can experience during manoeuvering an a/c. We may define three main areas of g-force :. 0 - 3 G | G experienced by pilots during standard turns in most combat jets. NEGATIVE 3G will induce a "red-out" due to bursting capillaries in the eyeballs. 4 G | Experienced during break turns, e.g. on a fast jet circuit pattern. An average pilot will lose consciousness (Black-out) after 10 seconds at 4 g. The onset of blackout can be delayed by 'hunching', bracing the stomach muscles and grunting.This is known as the L-1 Manoeuver. 5 - 9 G | For emergency use only, e.g. during ACM. More than a few seconds will induce g-locG loadings of 5 - 9 g should be reserved for emergency manoeuvers such as break turns.
G-Loc
Aboutg-induced loss of consciousness. Pilot blackout caused by excessive g or by too-rapid onset of g-forces.
GATE
AboutMaximum Power.
GCA
AboutGround Controlled Approach.
GCI
AboutGround Controlled Intercept.
Glint
AboutApparent movement of the radar Centre of a target.
Golden BB
AboutA lucky hit in air to air gunnery.
Gut Check
AboutRolling the a/c to check for attacks from the belly side.
HARM
AboutHigh-Speed-Anti-Radiation-Missile.
Hassling
AboutMock dogfight.
Head Mounted Computer
AboutThe pilot's brain.
Holding Pattern
AboutA racetrack-shaped manoeuvre which keeps aircraft within a specified airspace while awaiting further clearance from air traffic control..
HOTAS
AboutHands On Throttle and Stick. A concept of allowing the pilot to control most of the a/c systems without having to take his hands off the throttle and stick.First saw major development in the F-15 Eagle.
HUD
AboutHead-Up-Display. Information relevant to the pilot which is projected onto a glass lens in the pilot's field of view.
HUD Brightness Control
AboutControl for adjusting the brightness of the HUD.This is particularly useful when flying at night or in bad weather.
HUD Discrete
AboutA text abbreviation on the HUD displaying status of a particular aircraft system.Examples are WEAPON DISCRETES, TARGETING DISCRETES..
Hurri
AboutHurricane, classic World War 2 British fighter plane.
HVAA
About"High Value Airborne Assets or "High Value Assets" refers to any important bird that must be protected. AWACS is the the number one guy there because without it, a lot of the airwar is blinded. But HVAA can refer to a lot of birds such as tankers. Also see - LDHD - (MiGMan thanks Spike Morley, USAF.)
Hypoxia
AboutOxygen-deprivation, usually occurs at over 10,000 ft altitude.
IAS
AboutIndicated Air Speed.
IFF
AboutIdentification Friend or Foe.
IFR
AboutIFR actually means "Instrument Flight Rules", but it is a traditional joke amongst pilots to refer to two valid VFR techniques of navigation: "I Follow Rivers" and "I Follow Roads".
ILS
AboutInstrument Landing System.
INS
AboutInertial Navigation System. An onboard system which uses gyroscopes, (either mechanical or laser) to sense acceleration and deceleration and compute current position.The system needs a known starting point to be entered prior to flight.
IP
AboutInitial Point. The location chosen to set up an attack run on a ground target.
IR
Aboutlnfra Red.
JP
AboutJet Petroleum.
Judy
About"Have radar contact and am taking over intercept".
Knife Fight
AboutAn intense aerial engagement.
Knot
AboutOne nautical mile per hour hour, the standard unit of aviation speed measurement.One knot equals 1. 1 515 mph; one nautical mile equals 6,080 feet..
kts
AboutKnots (Nautical mile).
L-1 Manoeuver
AboutTensing the body and grunting to counter G- force.
LDHD
About" While HVAA is not not an out of date term, it's been largely replaced by the term Low Density High Demand (LDHD). This refers to the fact that there aren't a lot of them to go around, but they are in great demand for whatever situations develop. It's a good reminder to those putting the battle together to plan wisely. When it was first developed during the Cold War, the E-3 was not very advanced, and was thusly sent out to warn and control fighters in on Soviets coming over the North Pole. As the jet evolved, it has now taken on the role of managing the air battlefield, where Command would actually be a better term. Nevertheless, the Control part of the word will remain with the title." MiGMan thanks Spike Morley, USAF.
Lethal Cone
AboutImaginary cone-shaped area centered on the a/c exhaust, from which most IR missile and gun attacks are launched.
LEX
AboutLeading Edge Extension of the wing root.
LGB
AboutLaser Guided Bomb.
Lock On
AboutRadar concentrating on target in the attack mode..
LSO
AboutLanding Signals Officer
Mach
AboutSpeed of sound, or abbreviation of Mach Number.
Mach Number
AboutSpeed stated as a function of the local speed of sound.
Mayday
AboutInternational radio distress call (from the French, m'aidez -- help me).
Meatball
AboutMirror Landing system as seen from glidesiope.
MER
AboutMultiple Ejection Rack.
Merged PloT
AboutThe point where two radar blips merge.
Met
AboutMeteorology, weather.
MFD
AboutMulti Function Display.
MiGMan’s MEGA Mixes
AboutExtended mixes of my videos taken during Activities and at Locations featured in MiGMan’s World Tour for Microsoft Flight Simulator. Sit back, grab a cuppa and enjoy!
MiG Rating
AboutMy MiG-Ratings explained.
MIL
AboutFull military power.
MRE
AboutMeals Ready to Eat (or Meals Rejected by Everybody).
MTBF
AboutMean Time Between Failures.
Mud Movers
AboutAir-to-surface attack specialists.
NAS
AboutNaval Air Station.
NATO
AboutNorth Atlantic Treaty Organisation.
NAV MODE
AboutNavigation Mode. A setting which displays navigation information to the pilot..
nm
Aboutnautical mile.
NOE
AboutNap of earth. Low flying, usually by the military, using contour-flying techniques and terrain-masking to avoid being seen.
NOTAM
AboutNotices To Airmen. These are notices issued by the authorities. Pilots should check the NOTAM board before EACH flight. The NOTAMs will cover: Information relative to maps and charts. Information on restricted and prohibited areas. Information of general value to aircrew and ATC officer's. Format of NOTAMS: A) Location, NOTAM number, subject area (AD= aerodromes, PRD= prohibited, restricted, danger areas, DOC= documents). B) Commencent date/ time. C) Completion date/ time. D) Hour's of Activation. E) Message. F) Lower limit. G) Upper Limit.
Nylon Letdown
AboutEjection.
Odd Rods
AboutNATO designation for a type of Soviet IFF aerial system.
OODA Loop
AboutSequence of pilot's observational processes: Observation - Orientation - Decision - Action.
Overspeed
AboutThe pilot of an a/c is to declare it u/s as soon as possible after any incident involving overspeed.
Overtake
AboutClosing speed irrespective of relative headings.
Passive
AboutNon- emitting sensors.
PAVE TACK
AboutAn all-weather laser designating weapons delivery system.
Period of Operation
AboutPERIOD OF OPERATION OF AN AIRCRAFT: 1. Stationary 2. Taxi / Hover 3. Take-off 4. In Flight 5. Landing
Petichiasis
AboutRupture of capillaries during high-G manoeuver-s, also known as "Fighter Pilot Measles".
Physics of Flight
AboutThe 4 main forces acting on an a/c in flight are. 1: LIFT | Lift (Bernoulli's Principle) As an aircraft wing moves through the air, the air must flow around the wing. Due to the different shape of the upper and lower surface of the wing, the air above the wing has to travel a further distance than the air below the wing. This results in lower air pressure above the wing. Nature moves quickly to equalise the pressures, with the result being an upward vector of force. If the total lift generated by the aircraft wings is greater than the total a/c weight, then the a/c will climb. 2: DRAG - 2 types - Parasitic and Induced. 3: THRUST - Action = Reaction. 4: WEIGHT - All mass exerts an attractive force to all other mass. Since the earth has a great mass, it draws smaller masses, such as aircraft, towards it. We call this attraction of Gravity. The measure of that we call Weight. From the pilot's perspective it means Gravity is pulling his aircraft in downwards direction.If the Lift is Greater than the Weight, the aircraft will stay aloft.
PIO
AboutPilot-induced Oscillation. An undulating flight pathbrought about by over-controlling.
Pioneer Mode
AboutNavigation system failure.
Pitch
AboutVertical movement or angle of a/c longitudinal a)Cis.
Platform
About20 miles and 5,000 ft alt from Landing on carrier.
PRF
AboutPulse Repetition Frequency.
PTT
AboutPart Task Trainer.
Pucker Factor
AboutAnxiety increase.
Punch Out
AboutEject.
QFI
AboutQualified Flying Instructor.
QRA
AboutQuick Reaction Alert.
RAAF
AboutRoyal Australian Air Force.
RADAR
AboutRadar Detection and Ranging.
RAF
AboutRoyal Air Force.
RATE 1 TURN
AboutA turn of 3 degrees per second. The a/c will therefore turn 1 80 degrees in 60 seconds and 90 degrees in 30 seconds.This is the standard rate of turn. Standard Turn 3 degrees per second = 180 deg in 60 secs. 90 deg in 30 secs. 360 deg in 120 sees. Use a stopwatch or the sweep hand on a wrist watch to time your turns.
RDO
AboutRadio.
Red Flag
AboutTactical exercises held at Nellis AFB, near Las Vegas.
RESCAP
AboutRescue Air Patrol.
RF
AboutRadio Frequency.
RIO
AboutRadar Intercept Officer.
RMK
AboutRemark(s).
Rnav
AboutArea navigation. A system of radio navigation which permits direct point-to-point off- airways navigation by means of an on-boar'd computer creating phantom VOR/DME transmitter's termed waypoints.
RPV
AboutRemotely Piloted Vehicle.
RTFM
AboutRead the Fxxxxxg Manual
Runway Denial
AboutA strike mission with the objective of reducing enemy air activities. A/c are usually dispersed in hardened shelters, neccesitating multiple attacks to destroy.Even the most severe runway cratering can usually be fixed within hours.Add to this the fact that anti-air defenses are at their most dense around airbases. As British Tornado pilots found during the Gulf War, airfield attacks are at best a risky business!
RWR
AboutRadar Warning Receiver.
RWY
AboutRunway.
Rx
AboutReceiver.
SAC
AboutStrategic Air Command.
SAM
AboutSurface to Air Missile.
SAR
AboutSearch and Rescue.
SARH
AboutSemi-Active Radar Homing.
SARSAT
AboutSAR satellite.
SID
AboutStandard Instrument Departure. A standard IFR departure route enabling air traffic controllers to issue abbreviated clearances and thus speed the flow of traffic.
Sierra Hotel
AboutShxt Hot, a laudatory apellation.
Socked in
AboutAn airport closed to air traffic by bad weather..
SOP
AboutStandard Operating Procedure.
Stabilators
AboutAll- moving one piece tailplane.
Standard Climb
About10 degree climb. Technique : Momentarily pull the stick about 1/3 to indicate 2 1/2 degrees AOA and then relax pressure on the stick until the FDI and the FPI settle on the 1 0 degrees PITCH BAR.
STOL
AboutShort Take-Off and Landing. Also VTOL, vertical take-off and landing; V/STOL, verbcal/short take-off and landing.
STOVL
AboutShort Take-Off, Vertical Landing.
STT
AboutSingle Target Track (air combat radar mode).
Super Cruise
AboutThe capability of sustaining supersonic flight without the use of afterburner.
Supply Route Interdiction
AboutModem mechanised armies are very dependent on POL Petroleum, Oil, Lubricants) supplies. Most common supply routes are Railways, Roads, Shipping and Air transport. "Choke Points" should be targeted.
TACAN
AboutTactical Air Navigation.
Taileron
AboutTailplanes with differential movement to provide roll control.
TAS
AboutTrue Air Speed.
Tasking of Air Assetts
AboutAir Combat is not an end in itself. The role of Air Power is to support surface forces in their military objectives and prevent the enemy from disrupting friendly operations. This sometimes requires engaging enemy air forces but these encounter's should be seen in context and not regarded as an end in themself.
TDY
AboutTemporary Duty.
TER
AboutTriple Ejection Rack.
TFS
AboutTactical Fighter Squadron.
TFW
AboutTactical Fighter Wing.
TO
AboutTake-off.
TOW
AboutTube-launched, Optically-tracked, Wire-guided. An anti-tank missile used by helicopter and ground forces..
Trap
AboutArrested Landing.
U/s
AboutUnserviceable ( not working).
UFC
AboutUp- Front Controller.
UHF
AboutUltra High Frequency.
USAF
AboutUnited States Air Force.
V1
AboutDecision speed, at which it must be decided whether or not to continue the takeoff.
VDU
AboutVisual Display Unit.
Vertigo
AboutLoss of balance.
VFR
AboutVisual Flight Rules. Defined as five miles visibility or more and 1,000 feet vertical and one nautical mile horizontal clearance from cloud.
VHF
AboutVery High Frequency.
VID
AboutVisual Identification, also called a VIZ.
VIZ
AboutVisual Identification.
VTOL
AboutVertical Take-Off and Landing.
Wake
AboutDisturbed air left behind a moving a/c.
Waveoff
AboutThe LSO wants you to abort the landing attempt due to a bad approach or fouled deck.
WAYPOINT
AboutNavigation point - A predefined navigation point entered into the a/c nav computer
Whiskey Delta
AboutA derogatory appellation, opposite of "Shxt Hot"
WP
AboutWayPoint
WSO
AboutWeapons System Operator
XMIT
AboutTransmit
Yaw
AboutMovement of the fuselage in the horizontal plane
Zulu or Z
AboutFormerly Greenwich Mean Time, now Coordinated Universal Time
Index