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Web-based Weather Expert System (WES) for …

Web-basedWeatherExpert System (WES) forSpaceShuttleLaunch @NASAAmesResearch centerMS BardinaNASAAmesResearch centerMS TheWeb- based WeatherExpert System (WES) is a critical moduleof the VirtualTest Bed de-velopmentto support go/nogo decisionsfor SpaceShuttleoperationsin the IntelligentLaunchand RangeOperationsprogram of of the environmentrelated tothe launchingor landingsite,the timeof the day ornight,the pad or runwayconditions,the missiondu-rations,the runwayequipmentandlandingtype. Ex-pert systemrulesare derived from weathercontingencyrules,whichwere developed overseveral years by chaining,a goal-directed inference method isadopted, becausea particularconsequence or goal clauseis evaluated first,andthenchained backward throughthe a rule is satisfied or true,thenthat par-ticularruleis fired and the decisionis expressed. Theexpert systemis continuouslyverifyingthe rulesagainstthe past one-hourweatherconditionsand the decisionsare normalprocedure of operationsrequires aformalpre-launchweatherbriefingheldon Launchmi-nus 1 day,whichis a specificweatherbriefingfor allareas of Space this paper,the Web-based WeatherExpert Systemof the IntelligentLaunchand rangeOperationsprogram is :WeatherTracking, Expert System ,shuttlelaunch and IntroductionThelaunch weath

Web-based Weather Expert System (WES) for Space Shuttle Launch⁄ T.Rajkumar SAIC@NASAAmesResearchcenter MS269-2,MofiettField,California,USA rajkumar@mail.arc.nasa.gov

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