飞机液压系统管路和接头PPT格式课件下载.pptx
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飞机液压系统管路和接头PPT格式课件下载.pptx
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BasicAircraftsystemFittingsandLinesofHydraulicSystem,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESAsingleaircrafttypicallycontainsseveraldifferenttypesofrigidfluidlines.Eachtypeoflinehasaspecificapplication.However,asarule,rigidtubingisusedin:
@#@StationaryapplicationsLong,relativelystraightrunsSystemsthattypicallyutilizerigidtubingincludefuel,oil,oxygen,andinstrumentsystems.,BasicAircraftSystemsHydraulicSystemRIGIDFLUIDLINES,MATERIAL1.RigidlinesinearlyaircraftManyfluidlinesusedinearlyaircraftweremadeofcoppertubing.However,coppertubingprovedtroublesomebecauseitbecamehardandbrittlefromthevibrationencounteredduringflight,andeventuallyfailed.Tohelppreventfailuresandextendthelifeofcoppertubing,itmustbeperiodicallyannealedtorestoreittoasoftcondition.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESMATERIAL1.RigidlinesinearlyaircraftAnnealingisaccomplishedbyheatingthetubeuntilitisredhotandthenquenchingincoldwater.Whenworkingonanaircraftthathascoppertubing,thetubingshouldbeannealedeachtimeitisremoved.Furthermore,copperlinesmustberegularlyinspectedforcracks,hardness,andgeneralcondition.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESMATERIAL2.RigidlinesinmodernaircraftAluminumalloy(铝合金)Corrosion-resistantsteel(耐腐蚀钢)Titaniumalloy(钛合金)Aluminumtubing:
@#@Aluminumtubingcomesinavarietyofalloys.purealuminumtubingmadefrom1100-H14(half-hard),oraluminumalloy3003-H14(half-hard)lowpressuresystems(below1,000psi)suchasthoseusedforinstrumentairorventilatingair,BasicAircraftSystemsHydraulicSystemRIGIDFLUIDLINES,MATERIAL2.RigidlinesinmodernaircraftAluminumtubing:
@#@linesmadeof5052-OaluminumalloyLowpressurefuelandoilandmediumpressure(1,000to1,500psi)hydraulicandpneumaticsystems.Thisalloy,eveninitsannealedstate,isaboutoneandthree-quarterstimesstrongerthanhalf-hard,commerciallypurealuminum.Occasionally,2024-Taluminumalloyisusedforfluidlinesbecauseofitshigherstrength.However,itisnotasflexibleand,therefore,ismoredifficulttobendandflarewithoutcracking.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESMATERIAL2.RigidlinesinmodernaircraftAluminumtubing:
@#@Aluminumalloytubesareidentifiedinanumberofways.onlargertubes,thealloydesignationisstampeddirectlyonthetubessurface.onsmalltubing,thealloydesignationistypicallyidentifiedbyacoloredband.Thesecolorbandsarenomorethan4incheswideandarepaintedonthetubesendsandmidsection.Whenabandconsistsoftwocolors,one-halfthewidthisusedforeachcolor.Figure10-1,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINES2.RigidlinesinmodernaircraftCorrosion-resistantsteeltubing:
@#@Corrosion-resistantsteeltubing,eitherannealedor1/4hard,isusedinhighpressuresystems(3,000psi)Applicationsincludehighpressurehydraulic,pneumaticandoxygensystems.Corrosion-resistantsteelisalsousedinareasthataresubjecttophysicaldamagefromdirt,debris,andcorrosioncausedbymoisture,exhaustfumes,andsaltair.Suchareasincludeflapwellsandexternalbrakelines.,BasicAircraftSystemsHydraulicSystemRIGIDFLUIDLINES,2.RigidlinesinmodernaircraftCorrosion-resistantsteeltubing:
@#@Anotherbenefitofcorrosion-resistantsteeltubingisthatithasahighertensilestrengthwhichpermitstheuseoftubingwiththinnerwalls.Asaresult,theinstallationweightissimilartothatofthicker-walledaluminumalloytubing.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINES2.RigidlinesinmodernaircraftTitaniumalloytubing:
@#@Thistypeoftubingandfittingisusedextensivelyintransportcategoryandhighperformanceaircrafthydraulicsystemsforpressuresabove1,500psi.Titaniumis30percentstrongerthansteeland50percentlighterthansteel.Cryofitfittings(冷装配接头)orswagedfittings(型锻接头)areusedwithtitaniumtubing.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINES2.RigidlinesinmodernaircraftTitaniumalloytubing:
@#@Donotusetitaniumtubingandfittingsinanyoxygensystemassembly.Titaniumandtitaniumalloysareoxygenreactive.Ifafreshlyformedtitaniumsurfaceisexposedingaseousoxygen,spontaneouscombustioncouldoccuratlowpressures.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESIdentificationoftubematerialRepairstoaircrafttubingmustbemadewithmaterialsthatarethesameastheoriginal,orareanapprovedsubstitute.Onewaytoensurethatareplacementismadeofthesamematerialistocomparethecodemarkingsonthereplacementtubetothoseontheoriginal.Ifthemanufacturersmarkingsaredifficultorimpossibletoread,analternativemethodofidentificationmustbeused.,BasicAircraftSystemsHydraulicSystem,RIGIDFLUIDLINESIdentificationoftubematerialWhilealuminumalloyandsteeltubinga
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- 关 键 词:
- 飞机 液压 系统 管路 接头
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