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X -
Experiment
{eng}
X -
Experimental Vehicle
{eng}
X -
Perpendicular to Orbit Plane
{eng}
X -
Time of Closest Approach
(Symbol; Apollo)
{eng}
x -
Times
{eng}
X -
Trans, by
{eng}
X -
X-RAY
(military phonetics alphabet)
{eng}
X-31 -
National Aerospace Plane
{eng}
X-33 -
eXperimental-33
{eng}
X-band -
Frequency Band
{eng}
X-DOT -
Rate of Change Along the X Axis
(Apollo)
{eng}
X-MP -
The name of a computer
{eng}
X-POP -
X-axis Perpendicular to Orbital Plane
(ISS)
{eng}
X-RAY -
military phonetics alphabet call sign for the letter "X"
{eng}
X-SAR -
X-Band Synthetic Aperture Radar
{eng}
X-VV -
X-axis in Velocity Vector
(ISS)
{eng}
X.25 -
Level II communication protocal for packet
{eng}
X/L -
Crosslink
(Milstar)
{eng}
XA -
Extended Architecture
{eng}
XAAM -
Experimental Air-to-Air Missile /also Experimental Air to Air Missile/
{eng}
Xarc -
Extended Architecture
{eng}
XBT -
Expendable BathyThermograph
{eng}
XCF -
X-ray Crystallography Facility
(ISS)
{eng}
XCVR -
Transceiver
{eng}
XDA -
X-Ray Detector Assembly
{eng}
XDCR -
Transducer
{eng}
Xdcr -
Transducer
{eng}
Xducer -
Transducer
{eng}
Xe -
Xenon
{eng}
XEU -
Xerox Encryption Unit
(AFSC2S)
{eng}
XEUS -
X-ray Evolving Universe Spectroscopy mission
(ESA)
{eng}
XFD -
Crossfeed
{eng}
XFER -
Transfer
(Apollo)
{eng}
XFMR -
Transformer
{eng}
XFV -
Exoskeleton Flying Vehicle
(Trek Aerospace; prototype)
{eng}
XGAM -
Experimental Guided Air Missile
{eng}
XGP -
Experimental Geosynchronous Platform
{eng}
XGRS -
X-ray/Gamma-Ray Spectrometer
{eng}
XHV -
Extreme High Vacuum
{eng}
XI -
X-Factor Investigator
{eng}
XIDB -
eXtended Integrated Data Base
(USAF)
{eng}
XIPS -
Xenon Ion Propulsion System
{eng}
XL -
X-Axis of Spacelab
(Spacelab)
{eng}
XLP -
Crosslink Payload
(Milstar)
{eng}
XLR -
Experimental Liquid Rocket
{eng}
XLTN -
Translation
{eng}
XM -
Experimental Missile
{eng}
XMAS -
Extended Mission Apollo Simulation
(USA)
{eng}
XMIT -
Transmit
(Apollo)
{eng}
XMIT -
Transmitter
(Apollo)
{eng}
XMM -
X-ray Multi-Mirror Mission /also X-Ray Multi-Mirror Mission/
(ESA)
{eng}
XMM -
X-ray Multi-Mirror /also X-ray Multi-Mirror Telescope; also X-ray Multi-Mission/
(satellite)
{eng}
XMM -
X-ray Multi-Mirror Satellite
(satellite)
{eng}
XMM -
X-ray Multi-Mirror Spacecraft
(astronomy)
{eng}
XMSN -
Transmission
{eng}
XMT -
Transmit
{eng}
XMTD -
Transmitted
{eng}
XMTR -
Transmitter
{eng}
XNS -
Xerox Network Systems
{eng}
XO -
Crystal Oscillator
{eng}
XO -
X-Axis of Orbiter
(Orbiter Structural Body Reference, X-Axis)
{eng}
XoDIS -
Exoatmospheric Discrimination Simulation
{eng}
XOFF -
Transmitter Off
{eng}
XOG -
Center of Gravity along the Z-Axis (Vertical)
{eng}
XON -
Transmitter On
{eng}
XP -
Payload Structural Body Reference, X-Axis
{eng}
XP -
X-Axis of Payload
{eng}
XPDR -
Transponder
{eng}
XPG -
X/open Portability Guide
{eng}
XPNDR -
Transponder
(ISS)
{eng}
XPOND -
Transponder
{eng}
XPONDER -
Transponder
(Apollo)
{eng}
XPOP -
X-axis Perpendicular to Orbit Plane /also X-axis Perpendicular to Orbital Plane/
(ISS)
{eng}
XPOP -
X-Axis Pointing Out of Plane
{eng}
XPORT -
Transport
{eng}
XPS -
XUV Photometer System
{eng}
XR -
Crossrange
(STS)
{eng}
XRCF -
X-Ray Calibration Facility
{eng}
XRD -
X-Ray Diffraction
{eng}
XRF -
X-ray flash(es)
(astronomy)
{eng}
XRL -
X-Ray Laser
{eng}
XRP -
X-Ray Polychromator
{eng}
XRP -
X-ray Positioner
(The Mechanism that SXI is part of)
{eng}
XRS -
X-Ray Spectrometer
(Astro-E Instrument; MESSENGER; experiment)
{eng}
XRT -
X-Ray Telescope
{eng}
XS -
X-Axis of Solid Rocket Booster
{eng}
XSAM -
Experimental Surface-to-Air Missile /also Experimental Surface to Air Missile/
{eng}
XSECT -
Cross Section
{eng}
XSM -
Experimental Strategic Missile
{eng}
XSPV -
Experimental Solid-Propellant Vehicle
{eng}
XSS -
Experimental Spacecraft System
{eng}
XSST -
X-Ray Spectrometer/Spectrograph Telescope
{eng}
XST -
eXperimental Stealth Tactical
(USAF; Have Blue)
{eng}
XT -
Crosstalk
{eng}
XT -
X-Axis of External Tank
{eng}
XTA -
X-Ray Telescope Assembly
{eng}
XTACACS -
Extended Terminal Access Controller Access Control System
{eng}
XTAL -
Crystal
{eng}
XTB -
Exoatmospheric Testbed
{eng}
XTE -
Crosstrack Error
(GPS)
{eng}
XTE -
X-Ray Timing Explorer /also X-ray Timing Explorer /
(satellite)
{eng}
XTM -
X-ray Transmission Microscope
{eng}
XUV -
Extreme Ultraviolet
(also EUV)
{eng}
XUV -
X-ray Ultraviolet
{eng}
XVV -
X-axis in Velocity Vector
(ISS; NASA)
{eng}
XVV -
X-axis toward Velocity Vector
(ISS)
{eng}
XWD -
X-Window Dump
(AFSC2S)
{eng}
XWS -
Experimental Weapon Specification
{eng}
XX -
X-Axis Times
(Horizontal Axis-Length of Vehicle; by, trans-)
{eng}
XXRP -
X-ray Polychromotor
{eng}
XY -
CCAS [=Cape Canaveral Air Station] Communications Facility
{eng}
XY -
X and Y coordinates
{eng}
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| 2007-08-16 15:51:46 UT
| © 2007
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