Difference between revisions of "List of Acronyms and Abbreviations"

From OrbiterWiki
Jump to navigation Jump to search
(Added list items.)
(Added terms.)
Line 43: Line 43:
 
;AgP:[[Argument of periapsis]]:The angle in the orbit from the point of the ascending node to the point of periapsis, Used in OrbitMFD.
 
;AgP:[[Argument of periapsis]]:The angle in the orbit from the point of the ascending node to the point of periapsis, Used in OrbitMFD.
 
;Alt:[[altitude]], distance from the body surface
 
;Alt:[[altitude]], distance from the body surface
−
;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 [[Orbit MFD]] as a dotted vector line connecting to a solid square on the orbit.
+
;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 [[Align MFD]] and [[Orbit MFD]] as a dotted vector line connecting to a solid square on the orbit.
 
;AORP:'''A'''utonomous '''O'''rbiter '''R'''apid '''P'''rototype, a system to allow a [[STS|shuttle]] orbiter to land without [[crew]].
 
;AORP:'''A'''utonomous '''O'''rbiter '''R'''apid '''P'''rototype, a system to allow a [[STS|shuttle]] orbiter to land without [[crew]].
 
;ApA:[[apoapsis]] apoapsis altitude, the lowest altitude of an orbit. Used in OrbitMFD mode.
 
;ApA:[[apoapsis]] apoapsis altitude, the lowest altitude of an orbit. Used in OrbitMFD mode.
Line 50: Line 50:
 
;ApT:time to [[apoapsis]] in seconds
 
;ApT:time to [[apoapsis]] in seconds
 
;AR:
 
;AR:
−
#'''A'''utomatic '''R'''eference, used in [[Align MFD]] as a command button for Align to select a reference body automatically based on highest gravity.
+
#'''A'''utomatic '''R'''eference, used in [[Align MFD]] as a command button for Align to select a reference body automatically based on highest gravity
 +
#'''A'''ltitude '''R'''ange, used to manually set the range in the altitude graph in [[Ascent profile MFD]]]
 
#'''a'''cceptance '''r'''eview
 
#'''a'''cceptance '''r'''eview
 
;atmo:[[atmosphere]]
 
;atmo:[[atmosphere]]
Line 62: Line 63:
 
=B=
 
=B=
 
;BMW:'''B'''ate, '''M'''ueller, '''W'''hite - authors of ''Fundamentals of Astrodynamics'' (1971)
 
;BMW:'''B'''ate, '''M'''ueller, '''W'''hite - authors of ''Fundamentals of Astrodynamics'' (1971)
 +
;BRG: '''B'''ea'''r'''in'''g''', used in the [[Horizontal Situation Indicator MFD]] to indicate the compass direction of the ILS or VOR transmitter
  
 
[[#top|Back to top]]
 
[[#top|Back to top]]
Line 75: Line 77:
 
;COAS:'''C'''rew '''O'''ptical '''A'''lignment '''S'''ight
 
;COAS:'''C'''rew '''O'''ptical '''A'''lignment '''S'''ight
 
;COM:communication or communicator
 
;COM:communication or communicator
 +
;CRS: '''C'''ou'''rs'''e, indicates the ship's course (heading) in the [[Horizontal Situation Indicator MFD]]
 
;CTD:[[crash to desktop]]
 
;CTD:[[crash to desktop]]
 
;CTRL:Control
 
;CTRL:Control
Line 88: Line 91:
 
;D3D9:refers to the advanced graphics client in [[Orbiter]].
 
;D3D9:refers to the advanced graphics client in [[Orbiter]].
 
;DDT&E:'''d'''esign, '''d'''evelopment, '''t'''est and '''e'''valuation
 
;DDT&E:'''d'''esign, '''d'''evelopment, '''t'''est and '''e'''valuation
 +
;DEV:'''Dev'''iation, in the [[Horizontal Situation Indicator MFD]], it indicates how far the OBS is adjusted left or right of the radial
 
;DG:[[Delta-glider]]
 
;DG:[[Delta-glider]]
 
;DG4:Orbiter's stock '''DG'''
 
;DG4:Orbiter's stock '''DG'''
Line 101: Line 105:
 
;DNS:atmospheric density
 
;DNS:atmospheric density
 
;DPS:'''D'''ata '''P'''rocessing '''S'''ystem. Term describing the general purpose computers and their interfaces onboard various manned spacecraft.
 
;DPS:'''D'''ata '''P'''rocessing '''S'''ystem. Term describing the general purpose computers and their interfaces onboard various manned spacecraft.
−
;DST or Dst:distance (to target)
+
;DST or Dst:distance (to target), used in the [[Horizontal Situation Indicator MFD]] to indicate distance to the selected ILS or VOR transmitter
 
;DTe:time to [[ejection]], as seen on the [[transfer MFD]]
 
;DTe:time to [[ejection]], as seen on the [[transfer MFD]]
 
;DTi:time to intercept, as seen on the [[transfer MFD]]
 
;DTi:time to intercept, as seen on the [[transfer MFD]]
Line 115: Line 119:
 
;ECSS:'''e'''uropean '''c'''ooperation for '''s'''pace '''s'''tandardization
 
;ECSS:'''e'''uropean '''c'''ooperation for '''s'''pace '''s'''tandardization
 
;EELV:Evolved Expendable Launch Vehicle
 
;EELV:Evolved Expendable Launch Vehicle
 +
;ELS: '''EL'''ements, custom '''S'''elect, used in [[Align MFD]] to select a custom orbital elements to which to align.
 
;EQU:plane of the [[equator]]
 
;EQU:plane of the [[equator]]
 
;ESA:[[European Space Agency]]
 
;ESA:[[European Space Agency]]
Line 156: Line 161:
 
=I=
 
=I=
 
;IAS:indicated air speed [http://en.wikipedia.org/wiki/Indicated_air_speed]
 
;IAS:indicated air speed [http://en.wikipedia.org/wiki/Indicated_air_speed]
−
;IDS:[[instrument docking system]]
+
;IDS:[[IDS|instrument docking system]], used in [[Docking MFD]]
 
;ILS:
 
;ILS:
 
#[[instrument landing system]]
 
#[[instrument landing system]]
 +
#also used in [[Horizontal Situation Indicator MFD]] to indicate which runway at which Spaceport is selected by the NAV system
 
#'''I'''nternational '''l'''aunch '''s'''ervices, a US-russian joint venture marketing [[Atlas]] and [[Proton]] launches
 
#'''I'''nternational '''l'''aunch '''s'''ervices, a US-russian joint venture marketing [[Atlas]] and [[Proton]] launches
−
;Inc:Inclination (http://en.wikipedia.org/wiki/Inclination)
+
;Inc: [[Inclination]], angular difference between one orbit with respect to another, usually the ecliptic, equatorial, or body orbit. Used in [[Align MFD]]
 
;ISP:[[specific impulse]]
 
;ISP:[[specific impulse]]
 
;ISS:[[International Space Station]]
 
;ISS:[[International Space Station]]
Line 179: Line 185:
 
[[#top|Back to top]]
 
[[#top|Back to top]]
 
=L=
 
=L=
−
;LAN:longitude of [[ascending node]] or local-area network
+
;LAN:
 +
#Longitude of the [[ascending node]], used in [[Align MFD]]
 +
#local-area network
 
;LCC:
 
;LCC:
 
#'''l'''aunch '''c'''ontrol '''c'''enter
 
#'''l'''aunch '''c'''ontrol '''c'''enter
Line 189: Line 197:
 
;LOX:Liquid Oxygen
 
;LOX:Liquid Oxygen
 
;LPe:longitude of [[periapsis]]
 
;LPe:longitude of [[periapsis]]
 +
;L/R:'''L'''eft/'''R'''ight, used in [[Horizontal Situation Indicator MFD]] to switch MFD mode focus to the left or right graphic display
  
 
[[#top|Back to top]]
 
[[#top|Back to top]]
Line 203: Line 212:
 
;MET:'''M'''ission '''E'''lapsed '''T'''ime. See [[w:Mission Elapsed Time|Mission Elapsed Time on Wikipedia]].
 
;MET:'''M'''ission '''E'''lapsed '''T'''ime. See [[w:Mission Elapsed Time|Mission Elapsed Time on Wikipedia]].
 
;MFD:'''M'''ulti'''f'''unctional '''D'''isplay, see [[MFD]]
 
;MFD:'''M'''ulti'''f'''unctional '''D'''isplay, see [[MFD]]
 +
;MHz: '''M'''ega'''H'''er'''z''', same as the old term megacycles/second, radio and transponder frequency, used in [[COMNAV MFD]]
 
;MJD:[[modified Julian date]]
 
;MJD:[[modified Julian date]]
 
;MLP:[[Mobile Launcher Platform]]
 
;MLP:[[Mobile Launcher Platform]]
Line 217: Line 227:
 
=N=
 
=N=
 
;NAV:
 
;NAV:
 +
#Navigatonal receiver,
 +
##in [[COMNAV MFD]] it is used to identify up to four receivers in the stack
 +
##in [[Horizontal Situation Indicator MFD]], it is used to select which receiver an HSI display is tuned to
 
#navigation
 
#navigation
 
#[[navigation aid]]
 
#[[navigation aid]]
Line 224: Line 237:
 
;OAT:outside air temperature
 
;OAT:outside air temperature
 
;Ob:obliquity of ecliptic (tilt of axis of rotation against plane of ecliptic)
 
;Ob:obliquity of ecliptic (tilt of axis of rotation against plane of ecliptic)
 +
;OB+ and OB-: '''O'''mni'''B'''earing, used to change the offset of the course arrow to left or right of the beam
 
;OBS:[[omni bearing selector]]
 
;OBS:[[omni bearing selector]]
 
;OBT:[[orbit]], as seen on the [[orbit MFD]]
 
;OBT:[[orbit]], as seen on the [[orbit MFD]]
Line 244: Line 258:
 
;PeR:[[periapsis]] radius. Distance of periapsis from the center of the orbited body
 
;PeR:[[periapsis]] radius. Distance of periapsis from the center of the orbited body
 
;PeT:time to [[periapsis]] in seconds.  
 
;PeT:time to [[periapsis]] in seconds.  
−
;PG:[[prograde]]
+
;PG:
 +
#Page, switching displayed pages in an MFD mode, used in [[Align MFD]]
 +
#[[prograde]]
 
;PLT:Pilot
 
;PLT:Pilot
 
;PMI:'''P'''rincipal '''m'''oments of '''i'''nertia, see [[PMI]]
 
;PMI:'''P'''rincipal '''m'''oments of '''i'''nertia, see [[PMI]]
Line 267: Line 283:
 
#angular unit ''radians''
 
#angular unit ''radians''
 
;RAnm:[[true anomaly]] of reference axis, as seen on the [[synchronise orbit MFD]]
 
;RAnm:[[true anomaly]] of reference axis, as seen on the [[synchronise orbit MFD]]
 +
;Rate: How fast the current orbital plane is changing, degrees per second, used in [[Align MFD]]
 
;RCS:[[reaction control system]], spacebourne orientation rocket system.
 
;RCS:[[reaction control system]], spacebourne orientation rocket system.
 
;R&D:'''r'''esearch and '''d'''evelopment
 
;R&D:'''r'''esearch and '''d'''evelopment
Line 272: Line 289:
 
;REF: '''Reference''', used in Align MFD to select a reference body.
 
;REF: '''Reference''', used in Align MFD to select a reference body.
 
;RG:[[retrograde]]
 
;RG:[[retrograde]]
−
;RInc:[[relative inclination]], as seen on the [[align orbital plane MFD]]
+
;RInc:[[relative inclination]], relative inclination between the current and target orbits, used in [[Align MFD]]
 
;RKA:Russian Space Agency
 
;RKA:Russian Space Agency
 
;RMS:'''R'''emote '''M'''anipulator '''S'''ystem
 
;RMS:'''R'''emote '''M'''anipulator '''S'''ystem
Line 288: Line 305:
 
#'''S'''yntetic '''a'''perture '''r'''adar, a [[radar]] mode used for creating navigation maps or detect slowly moving ground vehicles.
 
#'''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]]
 
;S/C: [[spacecraft|'''s'''pace'''c'''raft]]
 +
;SC< and SC>:'''SC'''an frequency up or down in the currently selected receiver, used in [[COMNAV MFD]]
 
;SDK:Software Development Kit [http://en.wikipedia.org/wiki/SDK]
 
;SDK:Software Development Kit [http://en.wikipedia.org/wiki/SDK]
 
;SDHLV:'''S'''huttle '''D'''erived '''H'''eavy '''L'''aunch '''V'''ehicle, see [[Ares V]]  
 
;SDHLV:'''S'''huttle '''D'''erived '''H'''eavy '''L'''aunch '''V'''ehicle, see [[Ares V]]  
Line 300: Line 318:
 
;Sh-ToR:ship [[time-on-reference]], as seen on the [[synchronise 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]]
 
;SI unit: The metric system of measurement, the modern name, see [[SI unit]]
 +
;SL+ and SL-: '''S'''e'''l'''ect, change which receiver to next or previous receiver to adjust frequency, used in [[COMNAV MFD]]
 
;SLF:shuttle landing facility, see [[Cape Canaveral]]
 
;SLF:shuttle landing facility, see [[Cape Canaveral]]
 
;SMa:[[semi-major axis]]  
 
;SMa:[[semi-major axis]]  
Line 327: Line 346:
 
;TLi:intercept longitude, as seen on the [[transfer MFD]]
 
;TLi:intercept longitude, as seen on the [[transfer MFD]]
 
;TLI:Trans Lunar Injection
 
;TLI:Trans Lunar Injection
−
;Tn:time to node, as seen on the [[align orbital plane MFD]]
+
;Tn:'''T'''ime to '''n'''ode, used in [[Align MFD]]
 
;TOFS:tangential offset [[docking MFD]]
 
;TOFS:tangential offset [[docking MFD]]
 
;TrA:[[true anomaly]]
 
;TrA:[[true anomaly]]
Line 334: Line 353:
 
;TRL:'''t'''echnology '''r'''eadiness '''l'''evel
 
;TRL:'''t'''echnology '''r'''eadiness '''l'''evel
 
;Ts:length of siderial day
 
;Ts:length of siderial day
−
;Tth:predicted thrust time, as seen on the [[align orbital plane MFD]]
+
;TthA: Estimated thrust time at the ascending node to align planes, used in [[Align MFD]]
 +
;TthD: Estimated thrust time at the descending node to align planes, used in [[Align MFD]]
 
;TVEL:tangential [[velocity]]
 
;TVEL:tangential [[velocity]]
  
Line 352: Line 372:
 
#Visual C++, an IDE and C++ compiler by Microsoft.  
 
#Visual C++, an IDE and C++ compiler by Microsoft.  
 
;Vel:[[velocity]]
 
;Vel:[[velocity]]
−
;VOR:[[very high frequency omnidirectional radio]]
+
;VOR:
 +
#[[very high frequency omnidirectional radio]]
 +
# used in the [[Horizontal Situation Indicator MFD]] to indicate which VOR transmitter is selected by a NAV radio, if it's selected to a VOR transmitter
 +
;VRR: '''V'''elocity '''R'''adial '''R'''ange, used to manually set the range in the Radial Velocity graph in [[Ascent profile MFD]]
 
;VS:vertical speed
 
;VS:vertical speed
 
;VSA: [[Virtual Space Agency]]
 
;VSA: [[Virtual Space Agency]]
 
;VTOL:'''V'''ertical '''T'''ake '''O'''ff and '''L'''anding
 
;VTOL:'''V'''ertical '''T'''ake '''O'''ff and '''L'''anding
 +
;VTR: '''V'''elocity '''T'''angential '''R'''ange, used to manually set the range in the Tangential Velocity Range graph in [[Ascent profile MFD]]
  
 
[[#top|Back to top]]
 
[[#top|Back to top]]
Line 363: Line 387:
 
;Wrp:time acceleration factor, seen in the [[general information display]]
 
;Wrp:time acceleration factor, seen in the [[general information display]]
 
=X=
 
=X=
−
;XPDR:[[transponder]]
+
;XPDR:[[transponder]], used in [[Docking MFD]]
 
=Y=
 
=Y=
 
;YSC:Yokohama Science Center
 
;YSC:Yokohama Science Center

Revision as of 04:43, 21 December 2024

This list contains definitions for Orbiter or important spaceflight acronyms or abbreviations, especially those appearing in MFDs and various HUD modes.

One entry in this list consists of a term with one or more definitions, like:

Term
Definition
;Term:Definition

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.

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:

Term
  1. Definition 1
  2. Definition 2
  3. Definition 3
;Term:
#Definition 1
#Definition 2
#Definition 3

The order of the definitions should be like that:

  1. Orbiter HUD definitions
  2. Orbiter MFD definitions
  3. General Orbiter definitions
  4. Orbiter Add-on definitions
  5. General spaceflight definitions

If you don't agree to a ordering of definitions, please complain in the talk page about the entry.

See also

Contents: Top - 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


A

AgP
Argument of periapsis:The angle in the orbit from the point of the ascending node to the point of periapsis, Used in OrbitMFD.
Alt
altitude, distance from the body surface
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 Align MFD and Orbit MFD as a dotted vector line connecting to a solid square on the orbit.
AORP
Autonomous Orbiter Rapid Prototype, a system to allow a shuttle orbiter to land without crew.
ApA
apoapsis apoapsis altitude, the lowest altitude of an orbit. Used in OrbitMFD mode.
ApD
apoapsis apoapsis distance
ApR
apoapsis apoapsis radius
ApT
time to apoapsis in seconds
AR
  1. Automatic Reference, used in Align MFD as a command button for Align to select a reference body automatically based on highest gravity
  2. Altitude Range, used to manually set the range in the altitude graph in Ascent profile MFD]
  3. acceptance review
atmo
atmosphere
ATV
  1. Autonomous Transfer Vehicle, an unmanned cargo spacecraft, see ATV.
  2. Automated Transfer Vehicle[1]
AU
astronomical unit

Back to top

B

BMW
Bate, Mueller, White - authors of Fundamentals of Astrodynamics (1971)
BRG
Bearing, used in the Horizontal Situation Indicator MFD to indicate the compass direction of the ILS or VOR transmitter

Back to top

C

CaLV
Cargo launch vehicle, see Ares V
CDI
course deviation indicator
CDR
  1. commander
  2. critical design review
CEV
Crew expedition vehicle, see CEV
CFD
computational fluid dynamics
CLV
Crew launch vehicle, see Ares I
COAS
Crew Optical Alignment Sight
COM
communication or communicator
CRS
Course, indicates the ship's course (heading) in the Horizontal Situation Indicator MFD
CTD
crash to desktop
CTRL
Control
CTV
  1. Crew Transfer Vehicle, a manned spacecraft derived from the ATV, see CTV
  2. Compatibility Test Van, NASA
CVEL
  1. closing velocity
  2. Common Vessel Extensions Light, see CVEL

Back to top

D

D3D9
refers to the advanced graphics client in Orbiter.
DDT&E
design, development, test and evaluation
DEV
Deviation, in the Horizontal Situation Indicator MFD, it indicates how far the OBS is adjusted left or right of the radial
DG
Delta-glider
DG4
Orbiter's stock DG
DGIII
DeltagliderIII, a famous enhanced version of the Delta-glider.
DGIV
DeltaGliderIV, an improved version of the DeltaGliderIII.
DG-S
Delta-glider equiped with two scramjets.
Dir
direction
Dist
distance
DIV
divergent, i.e. yaw gimbal mode.
DLng
longitude difference, as seen on the synchronise orbit MFD
DN
descending node
DNP
dynamic pressure
DNS
atmospheric density
DPS
Data Processing System. Term describing the general purpose computers and their interfaces onboard various manned spacecraft.
DST or Dst
distance (to target), used in the Horizontal Situation Indicator MFD to indicate distance to the selected ILS or VOR transmitter
DTe
time to ejection, as seen on the transfer MFD
DTi
time to intercept, as seen on the transfer MFD
DTmin
time of arrical difference, as seen on the synchronise orbit MFD
Dv
delta velocity, as seen on the transfer MFD, see also Delta-V

Back to top

E

Ecc
eccentricity
ECL
plane of the ecliptic
ECLSS
Environmental control and life support system
ECSS
european cooperation for space standardization
EELV
Evolved Expendable Launch Vehicle
ELS
ELements, custom Select, used in Align MFD to select a custom orbital elements to which to align.
EQU
plane of the equator
ESA
European Space Agency
ESAS
Exploration Systems Architecture Study
ET
external tank
EVA
Extra vehicular activity, see EVA

Back to top

F

FGB
Russian abbreviation for Functional Cargo Block. See FGB
FoV
field of view, as seen in the general information display
FPS
frame rate (frames per second), as seen in the general information display
FRF
Flight Readiness Firing, a launch countdown test of the Shuttle running all except SRB ignition and lift-off.

Back to top

G

g
a unit of acceleration. 1g equals the gravity acceleration on earths surface, 9.81 m/s²
GET
Ground Elapsed Time [2]
GL
Used often as vehicle name prefix for a Delta-glider
GLOC
Gravity-induced Loss of Consciousness
GMT
Greenwich Mean Time.See Universal Time on Wikipedia
GPDS
Generic Payload Description System
GPS
Global Positioning System
GS
ground speed
GTO
geostationary transfer orbit

Back to top

H

H
Horizon
HAC
Heading Alignment Cone
HLLV
heavy lift launch vehicle
HSI
horizontal situation indicator
HST
Hubble Space Telescope
HTO
hypothetical transfer orbit, as seen on the transfer MFD
HUD
heads up display

Back to top

I

IAS
indicated air speed [3]
IDS
instrument docking system, used in Docking MFD
ILS
  1. instrument landing system
  2. also used in Horizontal Situation Indicator MFD to indicate which runway at which Spaceport is selected by the NAV system
  3. International launch services, a US-russian joint venture marketing Atlas and Proton launches
Inc
Inclination, angular difference between one orbit with respect to another, usually the ecliptic, equatorial, or body orbit. Used in Align MFD
ISP
specific impulse
ISS
International Space Station

Back to top

J

JD
Julian date
JSC
Lyndon B. Johnson Space Center
JWST
James Webb Space Telescope


Back to top

K

KISS
"Keep it simple, stupid!" Famous engineering dogma.[4]
KSC
Kennedy Space Center

Back to top

L

LAN
  1. Longitude of the ascending node, used in Align MFD
  2. local-area network
LCC
  1. launch control center
  2. life cycle cost
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
L/R
Left/Right, used in Horizontal Situation Indicator MFD to switch MFD mode focus to the left or right graphic display

Back to top

M

m
metre
M
Mega (SI prefix for 106). Occasionally mass or mach number
MCC
  1. mid course correction
  2. mission control center
MCC-H
mission control center Houston
MCC-M
mission control center Moscow
MDR
mission definition review
MECO
main engine cutoff
MET
Mission Elapsed Time. See Mission Elapsed Time on Wikipedia.
MFD
Multifunctional Display, see MFD
MHz
MegaHerz, same as the old term megacycles/second, radio and transponder frequency, used in COMNAV MFD
MJD
modified Julian date
MLP
Mobile Launcher Platform
MMOD
Micrometeorites and orbital debris
MMU
manned maneuvering unit, see MMU
MnA
mean anomaly
MnL
mean longitude
m/s
meters per second, the SI base unit of velocity
MSx
Mission Specialist x


Back to top

N

NAV
  1. Navigatonal receiver,
    1. in COMNAV MFD it is used to identify up to four receivers in the stack
    2. in Horizontal Situation Indicator MFD, it is used to select which receiver an HSI display is tuned to
  2. navigation
  3. navigation aid

Back to top

O

OAT
outside air temperature
Ob
obliquity of ecliptic (tilt of axis of rotation against plane of ecliptic)
OB+ and OB-
OmniBearing, used to change the offset of the course arrow to left or right of the beam
OBS
omni bearing selector
OBT
orbit, as seen on the orbit MFD
OMBUU
Orbiter Midbody Umbilical Unit
OMP
Orbiter Multiplayer Project, an ongoing program to create a multiplayer server in Orbiter.
OMS
Orbital Maneuvering System, the 'main engines' of the space shuttle orbiter
OS
orbital speed

Back to top

P

P
position (sometimes radius) vector, as seen on the align orbital plane MFD
p0
atmospheric pressure at sea level
PAM
Payload Assist Module, a family of solid upper stages for the Space Shuttle
PAPI
Precision Approach Path Indicators, lit runway centerline.
PB
Shuttle PB
PDR
preliminary design review
PDRS
Payload Deployment and Retrieval System, the official name of the robot arm of the Space Shuttle
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
  1. Page, switching displayed pages in an MFD mode, used in Align MFD
  2. prograde
PLT
Pilot
PMI
Principal moments of inertia, see PMI
Pos
position
PRJ
projection, as seen on the orbit MFD
PRR
preliminary requirements review
PSx
Payload Specialist x

Back to top

Q

QR
qualification review

Back to top

R

R
  1. mean radius
  2. specific gas constant
r0
atmospheric density at sea level
Rad
  1. radial distance
  2. angular unit radians
RAnm
true anomaly of reference axis, as seen on the synchronise orbit MFD
Rate
How fast the current orbital plane is changing, degrees per second, used in Align MFD
RCS
reaction control system, spacebourne orientation rocket system.
R&D
research and development
RDT&E
research, development, testing and evaluation
REF
Reference, used in Align MFD to select a reference body.
RG
retrograde
RInc
relative inclination, relative inclination between the current and target orbits, used in Align MFD
RKA
Russian Space Agency
RMS
Remote Manipulator System
RS
Russian-side, used as prefix for orientation when describing ISS components.
RSLS
Redundant set launch sequencer, the computer systems responsible for the ignition of the SSMEs in the Space Shuttle orbiter.
RTFM
Read the fine (or many other f-words) manual, a typical forum answer for questions already answered extensivly in the manual.
RTLS
Return to launch site, a Space Shuttle abort mode.
RVel
relative velocity

Back to top

S

SAR
  1. Search and rescue.
  2. Syntetic aperture radar, a radar mode used for creating navigation maps or detect slowly moving ground vehicles.
S/C
spacecraft
SC< and SC>
SCan frequency up or down in the currently selected receiver, used in COMNAV MFD
SDK
Software Development Kit [5]
SDHLV
Shuttle Derived Heavy Launch Vehicle, see Ares V
SDLV
Shuttle Derived Launch Vehicle, see Ares
SECO
  1. Secondary Engine Cutoff
  2. Sustainer Engine Cutoff
Sim
  1. simulation time (in seconds), as seen in the general information display
  2. 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
SL+ and SL-
Select, change which receiver to next or previous receiver to adjust frequency, used in COMNAV MFD
SLF
shuttle landing facility, see Cape Canaveral
SMa
semi-major axis
SMi
semi-minor axis
SRB
Solid Rocket Booster [6]
SRTM
Shuttle radar topography mission, see SRTM.
SSME
Space Shuttle Main Engines [7]
SSTO
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
space transportation system, AKA space shuttle, see space transportation system

Back to top

T

T
orbit period, measured in seconds
TAEM
Terminal Area Energy Management
TAS
true air speed [8]
TEI
Trans Earth Injection[9]
TGT
TarGeT, command button used in Align MFD, Docking MFD, Orbit MFD
Tg-ToR
target time-on-reference, as seen on the synchronise orbit MFD
TKS
russian spacecraft for the Almaz program, see TKS
TLA
Three letter acronym for a three letter acronym.
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, used in Align MFD
TOFS
tangential offset docking MFD
TrA
true anomaly
TRK
Track ship, as displayed by map MFD
TrL
true longitude
TRL
technology readiness level
Ts
length of siderial day
TthA
Estimated thrust time at the ascending node to align planes, used in Align MFD
TthD
Estimated thrust time at the descending node to align planes, used in Align MFD
TVEL
tangential velocity

Back to top

U

UMMU
Universal manned maneuvering unit, popular add-on, see Universal MMU.
UNKS
unknown problems, you are aware of.
UNK-UNKS
unknown problems, you are not aware of.
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.

Back to top

V

VASI
Visual Approach Slope Indicator, the glideslope lighting system ajacent to runways to guide pilots onto the correct angle of glideslope (normally 3 degrees).
VC
  1. virtual cockpit
  2. Visual C++, an IDE and C++ compiler by Microsoft.
Vel
velocity
VOR
  1. very high frequency omnidirectional radio
  2. used in the Horizontal Situation Indicator MFD to indicate which VOR transmitter is selected by a NAV radio, if it's selected to a VOR transmitter
VRR
Velocity Radial Range, used to manually set the range in the Radial Velocity graph in Ascent profile MFD
VS
vertical speed
VSA
Virtual Space Agency
VTOL
Vertical Take Off and Landing
VTR
Velocity Tangential Range, used to manually set the range in the Tangential Velocity Range graph in Ascent profile MFD

Back to top

W

WBS
work breakdown structure
WPD
work package description
Wrp
time acceleration factor, seen in the general information display

X

XPDR
transponder, used in Docking MFD

Y

YSC
Yokohama Science Center

Z

ZM
zoom, as seen on the map MFD

Back to top

Contents: Top - 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Retrieved from "https://www.orbiterwiki.org/index.php?title=List_of_Acronyms_and_Abbreviations&oldid=433993"