FuelStorageFuelStorageIntroduction

Theprimarypurposeoffuelsysteminclude:storeandsupplyfuel

Therearemanysubsystemoffuelsystem:Fuelstorage【燃油儲(chǔ)存】andpressurefueling【壓力加油】Fuelfeed(engine&APU)【供油（發(fā)動(dòng)機(jī)及APU）】Defuel【抽油】Fuelquantityindicatingsystem(FQIS)【油量指示系統(tǒng)】Fueltemperatureindication【燃油溫度指示】FuelStorageUsingthewetwingconcept,allfuelisstoredinthreetanks,maintank1,maintank2,andcentertank,whichareconstructedoftheprimarywingstructure.使用濕機(jī)翼的理念，所有的燃油都儲(chǔ)存在三個(gè)油箱中，由基本機(jī)翼結(jié)構(gòu)所構(gòu)成的1號(hào)、2號(hào)主油箱和中央油箱。Frontandrearspars,topandbottomwingskinsandselectedwingribsaresealedinternally【adv.內(nèi)地；內(nèi)心地】toformthetanks.Thecentertankisinthefuselageandtheleftandrightwingroot.FuelStorageFuelStorageThemaintanksarelocatedoutboard【adj.外側(cè)的】ofthecentertank.Thesurgetanks【防波（通氣）油箱】,designedtocollectfueloverflow,areoutboardofeachmaintank.FuelStorageHowmanytanksofthe737NG?Andhowmanytanksusedtostorefuel?Whataboutothers?

Onecentertank,leftandrightmaintank,twosurgetanksWhichcomponentsconstructthefueltank?

Frontandrearspars,topandbottomwingskins,andselectedwingribsFuelStorageSomepartsinthefueltank:accesspanels,wingribs,cutouts【切口】,checkvalves,andsumpdrainvalves【集油放泄活門】FuelStorageWingfueltankaccesspanels【接近蓋板】permitentryintoeachfuelandsurgetank.Thewingfueltankaccesspanelsareonthebottomwingskin.FuelStorageWingribsdividethefueltanksintobays【n.設(shè)備艙，機(jī)艙】.Wingfueltankaccesspanelsarebetweenthewingribs.Accessacrosswingribstoadjacent【adj.相鄰，相鄰的】baysisthroughcutouts【n.切口，斷流器】.Wingrib8,inmaintank1andmaintank2,hascheckvalves【單向活門】.Thecheckvalvesletfuelflowinboardbutdonotletfuelflowoutboard.FuelStorageThesump【n.污水坑，集油槽】drainvalvesletfuel,water,andc