List of Acronyms and Abbreviations
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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
- Definition 1
- Definition 2
- Definition 3
;Term: #Definition 1 #Definition 2 #Definition 3
The order of the definitions should be like that:
- Orbiter HUD definitions
- Orbiter MFD definitions
- General Orbiter definitions
- Orbiter addon definitions
- General spaceflight definitions
If you don't agree to a ordering of definitions, please complain in the talk page about the entry.
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
- AF
- AgP
- argument of periapsis
- AN
- ascending node
- ApA
- apoapsis altitude
- ApD
- apoapsis distance
- ApR
- apoapsis radius
- ApT
- time to apoapsis
- Alt
- altitude
- atmo
- atmosphere
- AU
- astronomical unit
B
- BMW
- Bate, Mueller, White - author team of a very famous book on astrodynamics and spaceflight (written in 1971)
C
- CDI
- course deviation indicator
- CDR
- commander
- CEV
- Crew Expedition Vehicle, see CEV
- COM
- communication or communicator
- CTRL
- Control
- CVEL
- closing velocity
- Common Vessel Extensions Light, see CVEL
D
- DN
- descending node
- DG
- Delta-glider
- DG-S
- Delta-glider equiped with two scramjets.
- DIV
- divergent, i.e. yaw gimbal mode.
- Dir
- direction
- Dist
- distance
- DLng
- longitude difference, as seen on the synchronise orbit MFD
- DNP
- dynamic pressure
- DNS
- atmospheric density
- DST or Dst
- distance (to target)
- 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
E
- Ecc
- eccentricity
- ECL
- plane of the ecliptic
- ESA
- European Space Agency
- ET
- external tank
- EQU
- plane of the equator
- EVA
- Extra vehicular activity, see EVA
F
- FGB
- russian acronym for Functional Cargo Block. See FGB
- FoV
- field of view, as seen in the general information display
- FPS
- frame rate, as seen in the general information display
G
- G
- an unit of acceleration. 1 G equals the gravity acceleration on earths surface, 9.81 m/s²
- GL
- Used often as vehicle name prefix for a Delta-glider
- GMT
- Greenwich Mean Time.See UT [1]
- GPS
- global positioning system
- GS
- ground speed
H
- H
- Horizon
- HLLV
- heavy lift launch vehicle
- HUD
- heads up display
- HSI
- horizontal situation indicator
- HST
- Hubble Space Telescope
- HTO
- hypothetical orbit, as seen on the transfer MFD
I
- IAS
- indicated air speed [2]
- IDS
- instrument docking system
- ILS
- instrument landing system
- International launch services, a US-russian joint venture marketing Atlas and Proton launches
- Inc
- Inclination
- ISP
- specific impulse, see ISP
- ISS
- International Space Station
J
- JD
- julian date
K
- KISS
- "Keep it simple, stupid!" Famous engineering dogma.[3]
- KSC
- Kennedy Space Center
L
- LAN
- longitude of ascending node or local-area network
- LDEF
- Long Duration Exposure Facility
- LEO
- Low earth orbit
- LPe
- longitude of periapsis
M
- m
- metre
- M
- Mega (SI prefix). Occasionally mass or mach number
- MCC
- mid course correction
- mission control center
- MCC-H
- mission control center houston
- MCC-M
- mission control center moscow
- MECO
- Main Engine Cutoff
- MFD
- multifunction display, see MFD
- MJD
- modified julian date
- MMU
- manned maneuvering unit, 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
- OMS
- orbital maneuvering system, 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
- PAPI
- Precision Approach Path Indicators, lit runway centreline.
- PB
- PeA
- periapsis altitude
- PeD
- periapsis distance
- PeR
- periapsis radius
- PG
- prograde
- PLT
- Pilot
- Pos
- position
- PRJ
- projection, as seen on the orbit MFD
- PSx
- Payload Specialist x
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
- Rate
- rate of change, as seen on the align orbital plane MFD
- RCS
- reaction control system, spacebourne orientation rocket system.
- RInc
- relative inclination, as seen on the align orbital plane MFD
- RVel
- relative velocity
- RG
- retrograde
- RKA
- Russian Space Agency
- RMS
- Remote Manipulator System
S
- SDLV
- Shuttle Derived Launch Vehicle, see Ares
- SDHLV
- Shuttle Derived Heavy Launch Vehicle, see Ares V
- SECO
- Secondary Engine Cutoff
- Sustainer Engine Cutoff
- 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
- SLF
- shuttle landing facility, see Cape Canaveral
- SMa
- semi-major axis
- SSME
- Space Shuttle Main Engines [4]
- SMi
- semi-minor axis
- SRB
- Solid Rocket Booster [5]
- 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, space shuttle
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 [6]
- TKS
- russian spacecraft for the Almaz program, see TKS
- 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
- Ts
- length of siderial day
- Tth
- predicted thrust time, as seen on the align orbital plane MFD
- TVEL
- tangential velocity
U
- 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.
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
- virtual cockpit
- Visual C++, an IDE and C++ compiler by Microsoft.
- Vel
- velocity
- VOR
- very high frequency omnidirectional radio
- VS
- vertical speed
- VTOL
- Vertical Take Off and Landing
W
- 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
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