Editing List of Acronyms and Abbreviations

Jump to navigation Jump to search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.

Latest revision Your text
Line 1: Line 1:
This list contains definitions for [[Orbiter]] or important [[spaceflight]] acronyms or abbreviations, especially those appearing in [[MFD|MFDs]] and various [[HUD]] modes.
+
* AF -
 
+
* AgP - [[argument of periapsis]]
One entry in this list consists of a term with one or more definitions, like:
+
* AN - [[ascending node]]
 
+
* ApA - [[apoapsis]] altitude
;Term:Definition
+
* ApD - [[apoapsis]] distance
<pre>
+
* ApR - [[apoapsis]] radius
;Term:Definition
+
* ApT - time to [[apoapsis]]
</pre>
+
* Alt - [[altitude]]
 
+
* atmo - [[atmosphere]]
Don't use links in the term part of a entry, please do so in the definition part, for keeping a consistent look-and-feel and don't putting to much emphasis on a single definition.
+
* CDI - [[course deviation indicator]]
 
+
* CDR - commander
Terms without definitions will get moved to the talk page into the section "Wanted definitions". If you have multiple definitions for a term, the definition part should turn into a numbered list, like:
+
* COM - communication or communicator
;Term:
+
* CTRL - Control
#Definition 1
+
* CVEL - [[closing velocity]]
#Definition 2
+
* CVEL - Common Vessel Extensions Light, see [[CVEL]]
#Definition 3
+
* DN - [[descending node]]
 
+
* DG - [[Delta-glider]]
<pre>
+
* DG-S [[Delta-glider]] equiped with two [[scramjet|scramjets]].
;Term:
+
* DIV - [[divergent]], i.e. [[yaw]] [[gimbal]] mode.
#Definition 1
+
* Dir - direction
#Definition 2
+
* Dist - distance
#Definition 3
+
* DLng - longitude difference, as seen on the [[synchronise orbit MFD]]
</pre>
+
* DNP - dynamic [[pressure]]
 
+
* DNS - atmospheric density
The order of the definitions should be like that:
+
* DST or Dst - distance (to target)
#Orbiter HUD definitions
+
* DTe - time to [[ejection]], as seen on the [[transfer MFD]]
#Orbiter MFD definitions
+
* DTi - time to intercept, as seen on the [[transfer MFD]]
#General Orbiter definitions
+
* DTmin - time of arrical difference, as seen on the [[synchronise orbit MFD]]
#Orbiter [[Add-on]] definitions
+
* Dv - delta [[velocity]], as seen on the [[transfer MFD]]
#General spaceflight definitions
+
* Ecc - [[eccentricity]]
 
+
* ECL - plane of the [[ecliptic]]
If you don't agree to a ordering of definitions, please complain in the [[Talk:List_of_Acronyms_and_Abbreviations|talk]] page about the entry.
+
* ESA - [[European Space Agency]]
 
+
* ET - [[external tank]]
==See also==
+
* EQU - plane of the [[equator]]
 
+
* [[EVA]] - Extra vehicular activity
* [[Russian glossary]]
+
* FGB - russian abbreviation for Functional Cargo Block. See [[FGB]]
* [[List of Acronyms and Abbreviations/ISS|List of Acronyms and Abbreviations for the ISS]]
+
* FoV - field of view, as seen in the [[general information display]]
 
+
* FPS - [[frame rate]], as seen in the [[general information display]]
----
+
* G - an unit of acceleration. 1 G equals the gravity acceleration on earths surface, 9.81 m/s²
{{compactTOC}}
+
* GL - [[Delta-glider]]
 
+
* GS - [[ground speed]]
=A=
+
* GMT - Greenwich Mean Time. Earth's mean time standard.
;AgP:[[Argument of periapsis]]:The angle in the orbit from the point of the ascending node to the point of periapsis, Used in OrbitMFD.
+
* H - Horizon
;AN:[[ascending node]]:a vector in an orbit where the body passes from south to north of the plane of reference (i.e. ecliptic or equatorial). Shown in OrbitMFD as a dotted vector line connecting to a solid square on the orbit.
+
* HUD - [[heads up display]]
;ApA:[[apoapsis]] apoapsis altitude
+
* HSI - [[horizontal situation indicator]]
;ApD:[[apoapsis]] apoapsis distance
+
* HST - [[Hubble Space Telescope]]
;ApR:[[apoapsis]] apoapsis radius
+
* HTO - [[hypothetical orbit]], as seen on the [[transfer MFD]]
;ApT:time to [[apoapsis]]
+
* IAS - indicated air speed [http://en.wikipedia.org/wiki/Indicated_air_speed]
;Alt:[[altitude]]
+
* IDS - [[instrument docking system]]
;AORP:'''A'''utonomous '''O'''rbiter '''R'''apid '''P'''rototype, a system to allow a [[STS|shuttle]] orbiter to land without [[crew]].
+
* ILS - [[instrument landing system]]
;atmo:[[atmosphere]]
+
* Inc - Inclination
;AR:'''a'''cceptance '''r'''eview
+
* ISP - specific impulse
;ATV:
+
* ISS - [[International Space Station]]
#'''A'''utonomous '''T'''ransfer '''V'''ehicle, an unmanned cargo spacecraft, see [[ATV]].
+
* JD - julian date
#'''A'''utomated '''T'''ransfer '''V'''ehicle[http://www.orbiterwiki.org/wiki/ATV#The_ATV]
+
* KISS - "Keep it simple, stupid!" Famous engineering dogma.  
;AU:[[astronomical unit]]
+
* KSC - [[Kennedy Space Center]]
 
+
* LAN - longitude of [[ascending node]] or local-area network
=B=
+
* LDEF - [[Long Duration Exposure Facility]]
;BMW:'''B'''ate, '''M'''ueller, '''W'''hite - authors of ''Fundamentals of Astrodynamics'' (1971)
+
* LEO - [[Low earth orbit]]
 
+
* LPe - longitude of [[periapsis]]
=C=
+
* m - metre
;CaLV:'''Ca'''rgo '''l'''aunch '''v'''ehicle, see [[Ares V]]
+
* M - Mega (SI prefix). Occasionally mass or [[mach]] number
;CDI:[[course deviation indicator]]
+
* MECO - Main Engine Cutoff
;CDR:
+
* [[MFD]] - multifunction display
#commander
+
* MJD - [[modified julian date]]
#'''c'''ritical '''d'''esign '''r'''eview
+
* MMU - Manned Maneuvering Unit
;CEV:'''C'''rew '''e'''xpedition '''v'''ehicle, see [[CEV]]
+
* MnA - [[mean anomaly]]
;CFD:computational fluid dynamics
+
* MnL - [[mean longitude]]
;CLV:'''C'''rew '''l'''aunch '''v'''ehicle, see [[Ares I]]
+
* MSx - Mission Specialist x
;COAS:'''C'''rew '''O'''ptical '''A'''lignment '''S'''ight
+
* m/s - meters per second, the SI base unit of [[velocity]]
;COM:communication or communicator
+
* NAV - navigation or [[navigation aid]]
;CTD:[[crash to desktop]]
+
* OAT - outside air temperature
;CTRL:Control
+
* Ob - obliquity of ecliptic (tilt of axis of rotation against plane of ecliptic)
;CTV:
+
* OBS - [[omni bearing selector]]
#'''C'''rew '''T'''ransfer '''V'''ehicle, a manned spacecraft derived from the [[ATV]], see [[CTV]]
+
* OBT - [[orbit]], as seen on the [[orbit MFD]]
#'''C'''ompatibility '''T'''est '''V'''an, '''NASA'''
+
* OMS - orbital maneuvering system, the 'main engines' of the orbital [[space shuttle]]
;CVEL:
+
* OS - [[orbital speed]]
#[[closing velocity]]
+
* P - position (sometimes radius) vector, as seen on the [[align orbital plane MFD]]
#'''C'''ommon '''V'''essel '''E'''xtensions '''L'''ight, see [[CVEL]]
+
* p0 - atmospheric pressure at sea level
 
+
* PAPI - Precision Approach Path Indicators, lit runway centreline.
=D=
+
* PB -
;D3D9:refers to the advanced graphics client in [[Orbiter]].
+
* PeA - [[periapsis]] altitude
;DN:[[descending node]]
+
* PeD - [[periapsis]] distance
;DDT&E:'''d'''esign, '''d'''evelopment, '''t'''est and '''e'''valuation
+
* PeR - [[periapsis]] radius
;DG:[[Delta-glider]]
+
* PG - [[prograde]]
;DGIII:[[DeltagliderIII]], a famous enhanced version of the [[Delta-glider]].
+
* PLT - Pilot
;DGIV:[[DeltaGliderIV]], an improved version of the [[DeltaGliderIII]].
+
* Pos - position
;DG4:Orbiter's stock '''DG'''
+
* PRJ - [[projection]], as seen on the [[orbit MFD]]
;DG-S:[[Delta-glider]] equiped with two [[scramjet|scramjets]].
+
* PSx - Payload Specialist x
;DIV:[[divergent]], i.e. [[yaw]] [[gimbal]] mode.
+
* R - mean radius or specific gas constant
;Dir:'''dir'''ection
+
* r0 - atmospheric density at sea level
;Dist:'''dist'''ance
+
* Rad - radial distance (not to be confused with angular unit ''radians'')
;DLng:longitude difference, as seen on the [[synchronise orbit MFD]]
+
* RAnm - [[true anomaly]] of reference axis, as seen on the [[synchronise orbit MFD]]
;DNP:dynamic [[pressure]]
+
* Rate - rate of change, as seen on the [[align orbital plane MFD]]
;DNS:atmospheric density
+
* RCS - [[reaction control system]], spacebourne orientation rocket system.
;DPS:'''D'''ata '''P'''rocessing '''S'''ystem. Term describing the general purpose computers and their interfaces onboard various manned spacecraft.
+
* RInc - [[relative inclination]], as seen on the [[align orbital plane MFD]]
;DST or Dst:distance (to target)
+
* RVel - relative [[velocity]]
;DTe:time to [[ejection]], as seen on the [[transfer MFD]]
+
* RG - [[retrograde]]
;DTi:time to intercept, as seen on the [[transfer MFD]]
+
* RMS - Remote Manipulator System
;DTmin:time of arrical difference, as seen on the [[synchronise orbit MFD]]
+
* SECO - Secondary Engine Cutoff
;Dv:delta [[velocity]], as seen on the [[transfer MFD]], see also [[Delta-V]]
+
* Sim - simulation time (in seconds), as seen in the [[general information display]] or a common abbreviation for "simulator"
 
+
* SHP - [[ship]], as seen on the [[orbit MFD]]
=E=
+
* Sh-ToR - ship [[time-on-reference]], as seen on the [[synchronise orbit MFD]]
;Ecc:[[eccentricity]]
+
* SLF - shuttle landing facility, see [[Cape Canaveral]]
;ECL:plane of the [[ecliptic]]
+
* SMa - [[semi-major axis]]  
;ECSS:'''e'''uropean '''c'''ooperation for '''s'''pace '''s'''tandardization
+
* SSME - Space Shuttle Main Engines
;ECLSS:'''E'''nvironmental '''c'''ontrol and '''l'''ife '''s'''upport '''s'''ystem
+
* SMi - [[semi-minor axis]]
;EELV:Evolved Expendable Launch Vehicle
+
* SRB - Solid Rocket Booster
;ESA:[[European Space Agency]]
+
* SSTO - [[Single_Stage_To_Orbit | Single Stage to Orbit]]
;ESAS:[[w:Exploration Systems Architecture Study|Exploration Systems Architecture Study]]
+
* STP - static [[pressure]] or [[Stone Temple Pilots]]
;ET:[[external tank]]
+
* STS - space transportation system, [[space shuttle]]
;EQU:plane of the [[equator]]
+
* Tgt - target, esp. in [[docking]] mode
;EVA:'''E'''xtra '''v'''ehicular '''a'''ctivity, see [[EVA]]
+
* Tg-ToR - target [[time-on-reference]], as seen on the [[synchronise orbit MFD]]
 
+
* T - orbit period, measured in seconds
=F=
+
* TAS - true air speed [http://en.wikipedia.org/wiki/True_air_speed]
;FGB:Russian abbreviation for Functional Cargo Block. See [[FGB]]
+
* TKS - russian spacecraft for the Almaz program, see [[TKS]]  
;FoV:field of view, as seen in the [[general information display]]
+
* TLe - eject longitude, as seen on the [[transfer MFD]]
;FPS:[[frame rate]] (frames per second), as seen in the [[general information display]]
+
* TLi - intercept longitude, as seen on the [[transfer MFD]]
;FRF:'''F'''light '''R'''eadiness '''F'''iring, a launch countdown test of the Shuttle running all except SRB ignition and lift-off.
+
* Tn - time to node, as seen on the [[align orbital plane MFD]]
 
+
* TOFS - tangential offset [[docking MFD]]
=G=
+
* TrA - [[true anomaly]]
;g:a unit of acceleration. 1g equals the gravity acceleration on earths surface, 9.81 m/s²
+
* TrL - [[true longitude]]
;GL:Used often as vehicle name prefix for a [[Delta-glider]]
+
* Ts - length of siderial day
;GET:'''G'''round '''E'''lapsed '''T'''ime [http://history.nasa.gov/SP-4029/Apollo_00c_Introduction.htm]
+
* Tth - predicted thrust time, as seen on the [[align orbital plane MFD]]
;GLOC:'''G'''ravity-induced '''L'''oss '''o'''f '''C'''onsciousness 
+
* TVEL - tangential [[velocity]]
;GMT:Greenwich Mean Time.See [[w:Universal Time|Universal Time on Wikipedia]]
+
* UT - universal time, GMT. Not to be confused with UTC (Universial Time Co-ordinated). The latter is based on atomic clocks not astronomy, hence the occasional ''leap-second'' to correct UTC to GMT.
;GPDS:[[GPDS|Generic Payload Description System]]
+
* VASI - Visual Approach Slope Indicator, the glideslope lighting system ajacent to runways to guide pilots onto the correct angle of glideslope (normally 3 degrees).
;GPS:'''G'''lobal '''P'''ositioning '''S'''ystem
+
* VC - virtual cockpit
;GS:[[ground speed]]
+
* Vel - [[velocity]]
;GTO:[[GTO|'''g'''eostationary '''t'''ransfer '''o'''rbit]]
+
* VOR - [[very high frequency omnidirectional radio]]
 
+
* VS - vertical speed
=H=
+
* VTOL - Vertical Take Off and Landing
;H:Horizon
+
* STOVL - Short take-off, vertical landing. As performed by the DG on full fuel employing hover thrusters during takeoff.
;HAC:[[Heading Alignment Cone]]
+
* Wrp - time acceleration factor, seen in the [[general information display]]
;HLLV:'''h'''eavy '''l'''ift '''l'''aunch '''v'''ehicle
+
* XPDR - [[transponder]]
;HUD:[[heads up display]]
+
* ZM - zoom, as seen on the [[map MFD]]
;HSI:[[horizontal situation indicator]]
 
;HST:[[Hubble Space Telescope]]
 
;HTO:[[hypothetical transfer orbit]], as seen on the [[transfer MFD]]
 
 
 
=I=
 
;IAS:indicated air speed [http://en.wikipedia.org/wiki/Indicated_air_speed]
 
;IDS:[[instrument docking system]]
 
;ILS:
 
#[[instrument landing system]]
 
#'''I'''nternational '''l'''aunch '''s'''ervices, a US-russian joint venture marketing [[Atlas]] and [[Proton]] launches
 
;Inc:Inclination (http://en.wikipedia.org/wiki/Inclination)
 
;ISP:[[specific impulse]]
 
;ISS:[[International Space Station]]
 
 
 
=J=
 
;JD:[[Julian date]]
 
;JWST:'''J'''ames '''W'''ebb '''S'''pace '''T'''elescope
 
;JSC:  Lyndon B. '''J'''ohnson '''S'''pace '''C'''enter
 
 
 
=K=
 
;KISS:"Keep it simple, stupid!" Famous engineering dogma.[http://en.wikipedia.org/wiki/KISS_principle]
 
;KSC:[[Kennedy Space Center]]
 
 
 
=L=
 
;LAN:longitude of [[ascending node]] or local-area network
 
;LCC:
 
#'''l'''aunch '''c'''ontrol '''c'''enter
 
#'''l'''ife '''c'''ycle '''c'''ost
 
;LDEF:[[Long Duration Exposure Facility]]
 
;LEO:[[Low earth orbit]]
 
;LH2:Liquid Hydrogen
 
;LOCV: Loss of crew and vehicle
 
;LOX:Liquid Oxygen
 
;LPe:longitude of [[periapsis]]
 
 
 
=M=
 
;m:metre
 
;M:Mega (SI prefix for 10<sup>6</sup>). Occasionally mass or [[mach]] number
 
;MCC:
 
#'''m'''id '''c'''ourse '''c'''orrection
 
#'''m'''ission '''c'''ontrol '''center'''
 
;MCC-H:'''m'''ission '''c'''ontrol '''c'''enter '''H'''ouston
 
;MCC-M:'''m'''ission '''c'''ontrol '''c'''enter '''M'''oscow
 
;MDR:'''m'''ission '''d'''efinition '''r'''eview
 
;MECO:'''m'''ain '''e'''ngine '''c'''ut'''o'''ff
 
;MET:'''M'''ission '''E'''lapsed '''T'''ime. See [[w:Mission Elapsed Time|Mission Elapsed Time on Wikipedia]].
 
;MFD:multifunction display, see [[MFD]]
 
;MJD:[[modified Julian date]]
 
;MLP:[[Mobile Launcher Platform]]
 
;MMOD:'''M'''icro'''m'''eteorites and '''o'''rbital '''d'''ebris
 
;MMU:'''m'''anned '''m'''aneuvering '''u'''nit, see [[MMU]]
 
;MnA:[[mean anomaly]]
 
;MnL:[[mean longitude]]
 
;MSx:Mission Specialist x
 
;m/s:meters per second, the SI base unit of [[velocity]]
 
 
 
=N=
 
;NAV:
 
#navigation
 
#[[navigation aid]]
 
 
 
=O=
 
;OAT:outside air temperature
 
;Ob:obliquity of ecliptic (tilt of axis of rotation against plane of ecliptic)
 
;OBS:[[omni bearing selector]]
 
;OBT:[[orbit]], as seen on the [[orbit MFD]]
 
;OMBUU: '''O'''rbiter '''M'''id'''b'''ody '''U'''mbilical '''U'''nit
 
;[[OMP]]:'''O'''rbiter '''M'''ultiplayer '''P'''roject, an ongoing program to create a multiplayer server in Orbiter.
 
;OMS:'''O'''rbital '''M'''aneuvering '''S'''ystem, the 'main engines' of the [[space shuttle]] orbiter
 
;OS:[[orbital speed]]
 
 
 
=P=
 
;P:position (sometimes radius) vector, as seen on the [[align orbital plane MFD]]
 
;p0:atmospheric pressure at sea level
 
;PAM:'''P'''ayload '''A'''ssist '''M'''odule, a family of solid upper stages for the [[Space Shuttle]]
 
;PAPI:'''P'''recision '''A'''pproach '''P'''ath '''I'''ndicators, lit runway centerline.
 
;PB:[[Shuttle PB]]
 
;PDR:'''p'''reliminary '''d'''esign '''r'''eview
 
;PDRS:'''P'''ayload '''D'''eployment and '''R'''etrieval '''S'''ystem, the official name of the robot arm of the Space Shuttle
 
;PRR:'''p'''reliminary '''r'''equirements '''r'''eview
 
;PeA:[[periapsis]] altitude. Altitude of periapsis above the surface of the orbited body
 
;PeD:[[periapsis]] distance. See PeR.
 
;PeR:[[periapsis]] radius. Distance of periapsis from the center of the orbited body
 
;PeT:time to [[periapsis]] in seconds.
 
;PG:[[prograde]]
 
;PLT:Pilot
 
;PMI:'''P'''rincipal '''m'''oments of '''i'''nertia, see [[PMI]]
 
;Pos:position
 
;PRJ:[[projection]], as seen on the [[orbit MFD]]
 
;PSx:Payload Specialist x
 
 
 
=Q=
 
;QR: '''q'''ualification '''r'''eview
 
 
 
=R=
 
;R:
 
#mean radius
 
#specific gas constant
 
;r0:atmospheric density at sea level
 
;Rad:
 
#radial distance
 
#angular unit ''radians''
 
;RAnm:[[true anomaly]] of reference axis, as seen on the [[synchronise orbit MFD]]
 
;RCS:[[reaction control system]], spacebourne orientation rocket system.
 
;R&D:'''r'''esearch and '''d'''evelopment
 
;RDT&E:'''r'''esearch, '''d'''evelopment, '''t'''esting and '''e'''valuation
 
;RInc:[[relative inclination]], as seen on the [[align orbital plane MFD]]
 
;RVel:relative [[velocity]]
 
;RG:[[retrograde]]
 
;RKA:Russian Space Agency
 
;RMS:'''R'''emote '''M'''anipulator '''S'''ystem
 
;RS:Russian-side, used as prefix for orientation when describing ISS components.
 
;RSLS:'''R'''edundant '''s'''et '''l'''aunch '''s'''equencer, the computer systems responsible for the ignition of the SSMEs in the [[Space Shuttle]] orbiter.
 
;RTFM:'''R'''ead '''t'''he '''f'''ine (or many other '''f'''-words) '''m'''anual, a typical forum answer for questions already answered extensivly in the manual.
 
;RTLS:'''R'''eturn '''t'''o '''l'''aunch '''s'''ite, a [[Space Shuttle]] abort mode.
 
 
 
=S=
 
;SAR:
 
#'''S'''earch '''a'''nd '''r'''escue.
 
#'''S'''yntetic '''a'''perture '''r'''adar, a [[radar]] mode used for creating navigation maps or detect slowly moving ground vehicles.
 
;S/C: [[spacecraft|'''s'''pace'''c'''raft]]
 
;SDK:Software Development Kit [http://en.wikipedia.org/wiki/SDK]
 
;SDLV:'''S'''huttle '''D'''erived '''L'''aunch '''V'''ehicle, see [[Ares]]
 
;SDHLV:'''S'''huttle '''D'''erived '''H'''eavy '''L'''aunch '''V'''ehicle, see [[Ares V]]
 
;SECO:
 
#'''S'''econdary '''E'''ngine '''C'''ut'''o'''ff
 
#'''S'''ustainer '''E'''ngine '''C'''ut'''o'''ff
 
;Sim:
 
#simulation time (in seconds), as seen in the [[general information display]]
 
#a common abbreviation for "simulator"
 
;SHP:[[ship]], as seen on the [[orbit MFD]]
 
;Sh-ToR:ship [[time-on-reference]], as seen on the [[synchronise orbit MFD]]
 
;SI unit: The metric system of measurement, the modern name, see [[SI unit]]
 
;SLF:shuttle landing facility, see [[Cape Canaveral]]
 
;SMa:[[semi-major axis]]
 
;SSME:Space Shuttle Main Engines [http://en.wikipedia.org/wiki/SSME_%28rocket_engine%29]
 
;SMi:[[semi-minor axis]]
 
;SRB:'''S'''olid '''R'''ocket '''B'''ooster [http://en.wikipedia.org/wiki/Solid_rocket_booster]
 
;SRTM:'''S'''huttle '''r'''adar '''t'''opography '''m'''ission, see [[SRTM]].
 
;SSTO:[[Single_Stage_To_Orbit | Single Stage to Orbit]]
 
;STOVL:Short take-off, vertical landing. As performed by the DG on full fuel employing hover thrusters during takeoff.
 
;STP:static [[pressure]]
 
;STS:'''s'''pace '''t'''ransportation '''s'''ystem, AKA space shuttle, see [[space transportation system]]
 
 
 
=T=
 
;Tgt:target, esp. in [[docking]] mode
 
;Tg-ToR:target [[time-on-reference]], as seen on the [[synchronise orbit MFD]]
 
;T:orbit period, measured in seconds
 
;TAS:true air speed [http://en.wikipedia.org/wiki/True_air_speed]
 
;TAEM:Terminal Area Energy Management
 
;TEI:'''T'''rans '''E'''arth '''I'''njection[http://en.wikipedia.org/wiki/Trans_Earth_Injection]
 
;TKS:russian spacecraft for the Almaz program, see [[TKS]]
 
;TLA:Three letter acronym for a '''t'''hree '''l'''etter '''a'''cronym.
 
;TLE:two-line elements
 
;TLe:eject longitude, as seen on the [[transfer MFD]]
 
;TLi:intercept longitude, as seen on the [[transfer MFD]]
 
;TLI:Trans Lunar Injection
 
;Tn:time to node, as seen on the [[align orbital plane MFD]]
 
;TOFS:tangential offset [[docking MFD]]
 
;TrA:[[true anomaly]]
 
;TRK:Track ship, as displayed by [[map MFD]]
 
;TrL:[[true longitude]]
 
;TRL:'''t'''echnology '''r'''eadiness '''l'''evel
 
;Ts:length of siderial day
 
;Tth:predicted thrust time, as seen on the [[align orbital plane MFD]]
 
;TVEL:tangential [[velocity]]
 
 
 
=U=
 
;UMMU:'''U'''niversal '''m'''anned '''m'''aneuvering '''u'''nit, popular add-on, see [[Universal MMU]].
 
;UNKS:unknown problems, you are aware of.
 
;UNK-UNKS:unknown problems, you are not aware of.
 
;UT:'''u'''niversal '''t'''ime, GMT. Not to be confused with [[UTC]] (Universial Time Co-ordinated). The latter is based on atomic clocks not astronomy, hence the occasional ''leap-second'' to correct UTC to GMT.
 
 
 
=V=
 
;VASI:'''V'''isual '''A'''pproach '''S'''lope '''I'''ndicator, the glideslope lighting system ajacent to runways to guide pilots onto the correct angle of glideslope (normally 3 degrees).
 
;VC:
 
#virtual cockpit
 
#Visual C++, an IDE and C++ compiler by Microsoft.
 
;Vel:[[velocity]]
 
;VOR:[[very high frequency omnidirectional radio]]
 
;VS:vertical speed
 
;VSA: [[Virtual Space Agency]]
 
;VTOL:'''V'''ertical '''T'''ake '''O'''ff and '''L'''anding
 
 
 
=W=
 
;WBS:'''w'''ork '''b'''reakdown '''s'''tructure
 
;WPD:'''w'''ork '''p'''ackage '''d'''escription
 
;Wrp:time acceleration factor, seen in the [[general information display]]
 
=X=
 
;XPDR:[[transponder]]
 
=Y=
 
;YSC:Yokohama Science Center
 
=Z=
 
;ZM:zoom, as seen on the [[map MFD]]
 
 
 
{{compactTOC}}
 
 
 
[[Category: Articles]]
 
[[Category:Glossary]]
 

Please note that all contributions to OrbiterWiki are considered to be released under the GNU Free Documentation License 1.2 (see OrbiterWiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following hCaptcha:

Cancel Editing help (opens in new window)

Templates used on this page: