LeonardodaVinci(1452-1519),anItaliaRenaissanceartist,naturescientist,engineerandthefounderofmechanicstheory,madetheimpressivecontributionstotheformingofclassicalhydraulicsandfluidmechanics.

　　DaVinci'sphilosophyideaisneartomaterialism.Hethoughtthateverythingintheworldmustobeytheobjectivenaturerules,knowledgecamefromsentienceanditwasimportanttodotheorygeneralization.Heemphasizedthatmathematicsandmechanicswerethebasisofnaturescience.Healsohadmanygreatfanciesanddiscoveriesonmilitaryaffairs,water-conservancy,civilengineeringandmechanicalengineering

　　DaVinci'smechanicsresearchworkwasnotonlytheoretic.Healsodesignedlotsofmachinesandapplianceswiththeprinciplesofmechanicsandmechanicalengineering.Hetookpartinthedesignandconstructionofcanals,waterconservancyandarchitecturalengineering.Basedonthestudyofbirdwingsmotion,heschemedoutanaircraftin1493forthefirsttime.

　　DaVincihadquitealotofraremanuscriptsonhydraulics,whichwaspublishedasWaterMotionandSurveyafterhedied.