Transcription of Web-based Weather Expert System (WES) for Space …
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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.
Figure4illustratesthe°owofdatatotheexpertsystem. PRECIPITATION CLOUD CHARACTERISTICS US THREAT WATCH TEMPERATURE, WIND SPEED RADAR DATA DATA weather.noaa.gov/weather
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