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外文翻译--穿越深渊的机器--新型的机器人可在数百公尺深的水底残骸间自由穿梭游览.doc

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外文翻译--穿越深渊的机器--新型的机器人可在数百公尺深的水底残骸间自由穿梭游览.doc

英文原文TheAbyssTransitSystemJamesCameroncommissionsthemakingofrobotsforareturntotheTitanicByGaryStixAtthebeginningofthemoviethatmadeLeonardoDiCaprioamegastar,acameratotingunmannedrobotventuredintoacavernousholeinthewreckthatsitsonthebottomoftheAtlantic,12,640feetfromthesurface.The500poundvehicle,christenedSnoopDog,couldmoveonlyabout30feetalongalowerdeck,hamperedbyitsbulkytwoinchdiametertetherhitchedtoasubmarinethatwaitedabove.Theamountofthrustneededtomoveitschunkyframestirredupathickcloud.Thevehicleveryquicklysiltedouttheentireplaceandmadeimagingimpossible,directorJamesCameronrecalls.ButtheeerievistarevealedbySnoopDogonthat1995expeditionmadeCameronhungerformore.HevowedtoreturnonedaywithtechnologythatcouldnegotiateanyplacewithintheTitanicsinterior.InthepastsixmonthstwodocumentariesoneforIMAXmovietheaterscalledGhostsoftheAbyss,theother,ExpeditionBismarck,fortheDiscoveryChanneldemonstratedthefruitsofathreeyeareffortthatCameronfinancedwith1.8millionofhisownmoneytomakethisvisionmaterialize.Thepayoffwastwo70poundrobots,namedafterBluesBrothersJakeandElwood,thathadthefullrunoftwooftheworldsmostfamouswrecks,theTitanicandtheBismarck,whichtheyvisitedonseparateexpeditions.ThepersonwhotookJakeandElwoodfromdreamtorobotisMikeCameron,Jamessbrother,anaerospaceengineerwhooncedesignedmissilesandwhoalsopossessesadiversebackgroundasahelicopterpilot,stuntphotographerandstuntman.RememberthecorpseinthemovieTheAbyss,fromwhosemouthacrabemergesGivingtheremotelyoperatedvehiclesfreedomofmovementrequiredthattheybemuchsmallerthanSnoopDogandthatthetetherswidthbetapereddramaticallysoasnottocatchonverticalshipbeams.MikeCamerontookinspirationfromthewireguidedtorpedoesusedbythemilitarythatcantravelformanymiles.Histeamcreatedvehiclesoperabletomorethan20,000feetenoughtoreachasmuchas85percentoftheoceanfloor.Thedimensionsofthefrontoftherobotare16incheshighby17inchesacross,smallenoughtofitinaBdeckwindowoftheTitanic.Thebotshaveaninternalbatterysothattheydonotneedtobepoweredthroughatether.Insteadthetetherfiftythousandthsofaninchindiametercontainsopticalfibersthatrelaycontrolsignalsfromamannedsubmersiblevehiclehoveringoutsideandthatalsosendvideoimagesintheotherdirection.Thetetherpaysoutfromtherobot,adesignthatpreventsitfromsnaggingonobjectsinthewreck.JamesCameronthoughttheprojectwouldbeastraightforwardengineeringtask,notmuchharderthandesigninganewcamerasystem.Thisturnedouttobeawholedifferentorderofmagnitude,hesays.Therewasnocommercialofftheshelfhardwarethatwouldworkinthevehicles.Everythinghadtobebuiltfromscratch.Iftheteamhadknownthisearlyon,headded,wewouldnthavebothered.Waterpressureonthecablethatcarriedtheopticalfiberscouldcreatemicroscopicbendsinthedatapipe,completelycuttingoffthecontrolsignalsfromthesubmersibles.DarkMatterinValencia,Calif.MikeCameronscompany,hadtodeviseafluidfilledsheatharoundthefibertodisplacetheminusculeairpocketsinthecablethatcouldleadtothemicrobending.Tosaveweight,theframesimilartoamonocoquebodyofaracecarwasmadeupofsmallglasshollowspherescontainedinanepoxymatrix.Thethrustercontainedalargediameter,slowlyrotatingbladewithnozzlesthatdiffusedthepropulsiveflow,minimizingthechurningthatwouldotherwisedisturbthecakedsilt.Ahighresolutionvideocamera,alongwithaninfraredcamerafornavigation,wasplacedinthefrontofthecraftalongwiththreelightemittingdiodearraysforfilllightingandtwoquartzhalogenlampsforspotlighting.Thewinterof2001markedacriticaljuncture.ItwassixmonthsbeforedivestotheTitaniccouldbesafelyattempted,andJameshadtodeterminewhethertoproceedorwaitanotheryear.Mikewasreally,reallynegativeontheidea,butIdecidedtogoforit,thedirectorsays.HefelthecouldntaffordtowaitlongerandthoughtthatafixeddeadlinewouldfocustheengineeringstaffatDarkMatter.Forhispart,Mikewascontendingwithanunendingseriesofdesignchallenges.ItwassuchanoverwhelmingsetofproblemsthatIhadverylittleconfidencethatcertainpartswouldbesolvableinthetimewehad,Mikesays.Afewweeksbeforethedivescommencedinthesummerof2001,therobotslithiumsulfurdioxodebasedbatteriescaughtfirewhilebeingtestedinapressuretank,destroyingwhatwastohavebeenathirdrobot.Mikewantedtodelaythedives,butJamesfoundasupplierofanothertypeoflithiumbatteryandpressedahead.Atthedivesite,JakeandElwoodtookstarringroleswiththeir2,000foottethers,exploringforthefirsttimeinabout90yearsremotepartsoftheships,includingtheengineroom,thefiremensmesshallandthecabinsoffirstclasspassengersevenfocusinginonabowlerhat,abrassheadboardandanintact,uprightglassdecanter.Theimageslacktheresolutionandnovelqualityofthehighdefinition,threedimensionalIMAXimages,theothermajortechnologicalinnovationofGhostsoftheAbyss.JakeandElwoodsdiscoveries,however,drawtheviewersinterestbecauseofwhattheyconveyoftheTitanicsmystique.Youactuallyfeellikeyoureoutthereinthewreck,Mikesays.HeremembershisbrotherpilotingtherobotswiththehelicopterstickthathadbeeninstalledintheRussiansubmersiblefromwhichtherobotswerelaunched.Jimendedupbeingacowboypilot,Mikesays.HewasfarmoreaggressivewiththesystemthanIwas.OnesceneinGhostsoftheAbyssrevealsthetensionthatsometimeseruptedbetweenthebrothers.Jamescontemplatesmovingoneoftherobotsthroughacabinwindowthatisstillpartiallyoccludedbyashardofglassthatcoulddamagethevehicleorcutthedatatether.WhenJamesdeclaresthatheisgoingtotakeJakein,moviegoerscanhearMikepleadingwithhisbrothernottodoit,ultimatelyrelentingoncethebothasnegotiatedtheopening.ThedecisiontoinstallanewtypeofbatteryatthelastminutecametohaunttheexpeditionElwoodslithiumpolymerbatteryignitedwhileinthebowelsoftheship.JamesmanipulatedtheremainingrobotintotheTitanictoperformarescueoperationbyhookingacordtothegrillofthedeadbotandtowingitout.AtthesurfaceonthedeckoftheRussianscientificvesseltheKeldysh,fromwhichthetwosubmarinescarryingJakeandElwoodtotheTitanicwerelaunchedMikerebuiltElwoodwithabackupbattery.Duringthenextdive,therobotcaughtfireagainwhileitwasstillmountedonthesubmarine,endangeringthecrew.Finally,Mikeworkedforan18hourstretchtoadaptaleadacidgelbatteryusedfordevicesonboardthemothershipintoapowersourceforElwood,enablingtheexpeditiontocontinue.Thebots,nowfittedwithanew,nonflammablebatterythatMikedesigned,mayfindservicebeyondmotionpictures.TheU.S.NavyhasfundedDarkMattertohelpitassessthetechnologyforunderwaterrecoveryoperationsofshipsoraircraft.Thebotsalsohavepotentialforscientificexplorationofdeepseatrenches.AftertravelingtotheTitanicandtheBismarck,theteamwentontoprobemidAtlantichydrothermalvents,discoveringmollusksinaplacewherescientistshadneverencounteredthembefore.Asadventureaficionados,thebrothersspeculatethatadescendantofJakeandElwoodmightevenbetotedonamissiontoEuropa,oneofJupitersmoons,toinvestigatethewatersthataresuspectedtoexistbelowitsicyshell.TheCameronsiblings,whotinkeredwithhomebuiltraftsandrocketsaschildreninOntarionearNiagaraFalls,hopetobearoundlongenoughtowitnesstheirrobotictwinsgofromthebottomoftheoceantothedepthsofspace.中文译文穿越深渊的机器新型的机器人可在数百公尺深的水底残骸间自由穿梭游览作者╱斯蒂克斯GaryStix曾一举捧红超级巨星李奥纳多狄卡皮欧的电影「铁达尼号」中,片头是一台无人驾驶的遥控装置,携带着摄影机深入大西洋,在3852公尺深的铁达尼号残骸里冒险的画面。这台226.8公斤重的海底载具名为「嗅犬」(SnoopDog),它被一条直径达五公分的笨重绳索所牵制,由于其中一端系在上面等待的潜水艇上,所以只能沿着底层甲板移动约九公尺。为了移动它矮胖的身躯,需要用到大量的推进力,但是却因此扬起厚重的尘云。导演詹姆斯.科麦隆(JamesCameron)回忆道这台海底载具很快就使整个地方充满淤泥,所以根本不可能取得影像。但是,嗅犬在1995年这场探险所显示的迷人画面,却使科麦隆渴求得到更多发现。他发誓将来有一天会重回铁达尼号,届时的技术将可以顺利穿越这艘船内部的任何地方。为了实现这个梦想,科麦隆自己耗资180万美元。而就在过去六个月里,「深渊游魂」(GhostsoftheAbyss)和「俾斯麦号长征」(ExpeditionBismarck)这两支纪录片展示了他努力三年的成果前者将于IMAX电影院上映,后者则

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