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    ESA > Our Activities > Human Spaceflight > Human Spaceflight Research

    Acronyms & abbreviations - W, X, Y, Z

    W Watt
    W3 World Wide Web
    W/m2 Watt per square metre
    WAIS Wide Area Information Server
    WAN Wide Area Network
    WAS Workflow for Application Selection also named Application to Vacancy Notices
    WATCH Wide Angle Telescope for Cosmic and Hard x-ray
    WATFILE WATerloo FILEsystem
    WBG Wide Band Gap
    WBRS Wide Band Ranging System
    WBS Work Breakdown Structure
    WD Watch Dog
    WDE Wheel Driver Electronics
    WDETM Wheel Driver Electronics Temperature Monitoring
    WFI Wave Field Image
    WG Working Group
    WiFi Wireless Fidelity (IEEE 802.11b wireless networking)
    WINFOP/MOIS WINdows Flight Operations Procedures/Mission Operations Information System
    WINTEL WINdows inTEL
    WISE Women International Space-simulation for Exploration
    WMO World Meteorological Organisation
    WMR Wheel Momentum Restoration
    WMS Web Map Server
    WORM Write Once Read Many
    Weekly Operations Review Meeting
    WP Work Package
    WPD Work Package Description
    WRT With Reference To
    With Respect To
    WV Work Volume
    WWW World Wide Web
    WWWW World Wide Weather Watch
    XDDS Xmm Data Distribution System
    XEO Xmm Essential Operations
    XEUS X-ray Evolving Universe Spectroscopy mission
    XEVAL Xmm long term EVALuation and archive
    XID eXchange IDentification
    XMCS Xmm Mission Control System
    XMD Xmm Mission Database
    XML eXtensible Markup Language
    XMM X-ray Multi Mirror mission
    XMMODB XMM Operational DataBase
    XOIRD Xmm Operations Interface Requirements Document
    XPAS eXternal Payload Analysis System
    XPLC External standard PayLoad Computer
    XR eXternal Router
    XRB X-Ray Baffle
    XRM X-Ray Monitor
    XST Xmm Science Team
    XUM Xmm User Manual

    Y Y axis
    Y-Instrument coordinate
    Y2K Year 2000
    YG Young Graduate
    YGT Young Graduate Trainee
    YRR Yaw Rate Reduction
    YSM Yaw Steering Mode
    YT Young Trainee
    ZR Zero Response

    Last update: 13 November 2008

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