特斯拉无叶涡轮泵制作方法

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1、特斯拉无叶涡轮泵制作方法BuildingaTeslaTurbinefromharddriveplattersPleasenotethatIamnotaPhysicistoramachinist(yet).IhavebeeninterestedinNikolaTeslaforsometime,andIwaslookingforaprojecttogainsomeexperienceinthemachineshop.MyjobistoprovideLectureDemonstrations,somygoalwastop

2、roduceateachingtoolratherthananefficientengine.Forbackgroundmaterial,WikipediahasseveralgoodreviewarticlesaboutNikolaTesla,theTeslaTurbine,theBoundaryLayerEffect,andReynoldsNumber.DisksAtfirstItriedusingCDsbecauseoftheirlargesurfaceareas,buttheydidn'tholduptoo

3、wellunderthemillingmachine.Ialsohadastackofplattersfromoldanddefectiveharddrives,butIdidn'tknowifthesmallerdiameterdiskswouldworkaswell.OneproblemIranintoisthatsomenewerharddrivesuseceramicdisksinsteadofmetal.They'restillcoatedwithmetal,butthey'rethinnerandaco

4、upleplattersshatteredwhenItriedtomachinethem:Myoriginalplanforthecenterholepatternhadsmallholes(forthreadedrodsandwashersforspacers),aswellaslargeholes(forairvents).Thesecondsetofplattershadradialarcscutinthemsuchthattheinsideedgeoftheradialcutoutisclosetotheo

5、utsidediameterofthespacersthatIremovedfromtheharddriveassemblies.Theharddriveplatterswerestackedandclampedtoarotarytablebetweentwosheetsofscrapaluminiumbutthetopdisk(abovepicture)stilltooksomeextradamage.Therestoftheplatterslookmuchbetterthough(seethecompleter

6、otorassemblybelow).SpacersIdecidedtobelazyandusethespacersthatwerebetweentheplattersintheoriginalharddriveassembliesratherthanmachinemyown.Thisincreaseddistance(roughly.05"insteadof.012")mayleadtoturblentflowratherthanlaminarflowbutwillbecloseenoughforthisproj

7、ect.ShaftWiththeturbineplattersandspacerscomplete,Iturnedashaftfromroundstock.Theinsidediameterofboththeplattersandspacersis.98"whichisthediameterofthethicksectioninthemiddle.Ileftthewholelengthat.98"untilIknewthewidthofthechamberandtheinsidediameterofthebeari

8、ngs.Thewidepartis1.77"longwhichfitsinsidethe2"thickacrylicchamber.CollarsThecollarsareessentiallywiderversionsoftheplatterspacers.Theinsidediameterhastofitontheshaft,buttheycan'tbe