Chinas rocket debris falls to Earth as accurately predicted

币游国际官方app

2021-05-21

TheLongMarch-5BY2rocket,carryingtheTianhemodule,blastsofffromtheWenchangSpacecraftLaunchSiteinsouthChinasHainanProvince,April29,,kickingoffaseriesofkeylaunchmissionsthataimtocompletetheconstructionofthestationbytheendofnextyear.(Xinhua/JuZhenhua)ChinasspaceauthorityannouncedonSundaythatremnantsfromChinasLongMarch-5BY2carrierrocketreenteredtheEarthsatmosphere,mostofitburninguponentry,onintechnologybetweenthetwogreatpowers,someAmericanshavebeenrackingtheirbrainsandgraspingeverychancetohypethe"Chinathreat"theory,withthelatestepisodebeingtheyaccusingChinaofbeing"irresponsible"forleavingrocketdebris"uncontrolled,causingthreatstoobjectsonEarth,"despitethefactthatitisaglobalcommonwaytodealwithrocketdebris,"surprised"thatsomerdsoftheWestinanattempttosabotageChinasspacestationconstructionplan,exposingtheirmilitaryintentionstotrackChinasspacehardware.CompletelynormalDebrisfromChinasLongMarch-5BY2carrierrocketreenteredEarthsatmosphereat10:24amBeijingtimeonSundaywithmostpartsburningupduringtheprocess,ChinaMannedSpaceAgency(CMSA),sspaceindustryinsidersandForeignMinistrythattheprobabilityoftherocketremnantscausingharmwasextremelylow,anumberofWesternmediaoutlets,includingCNNandTheNewYorkTimes,aswellastheUSPentagonandNASA,claimedthedebriswasheadingbacktoEarthinan"uncontrolled"mannerandcriticizedChinaofbeing"irresponsible"fortheoceanlanding."Theaccusationswerefalse,groundless,"saidSongZhongping,anaerospaceexpertandTVcommentator."Theso-calleduncontrolledtrajectoryreferstothelossofpropulsion,butinnowaymeansthatChinahaslosttrackofitsflightpathandreal-timelocation."EverymovementoftherocketfragmentsisbeingcloselywatchedbyChinasspacetrackingnetwork,andaccuratepredictionsonitslandingsiteweremadeaccordinglyandtheflightcoursewouldavoiddenselyinhabitedareasinthedesigningphase,nan,chiefeditorofAerospaceKnowledgemagazine,saiditis"completelynormal"forrocketdebristoreturntoEarth,anditisacommonpracticecarriedoutbyallglobalparticipantsintheaerospacefield,includingtheUS."Thewreckagesfalliswithinthenormalrangeunderwidelyacceptedstandards,withmostpartsburntupduringre-entryandafewwereinsufficientlyburntduetodifferencesintheatmosphericenvironment,"Wangsaid."ExceptfortheSpaceXreusablerockets,allremnantsfromthefirstandsecondstagelculatetheirtrajectoriesasChinadoes,"ssuccessfuldeliverytoorbithasproventhereliabilityandcontrollabilityoftheLongMarch5Brocket,,whichsentthefirstsectionofChinasspacestation-Tianhecoremodulecabin-intoorbit,Chinakickedoffanintenseconstructionphaseofthecountrysfirstspacestationproject,whntoforeignpartnersaftertheretirementoftheInternationalSpaceStationscheduledin2024,someWesterncountries,especiallytheUS,arejealousofhowrapidlyChinaisgrowinginaerospacetechnology."Therefore,anyprogressintheaerospacesectorwilltouchanerveintheUSstrategiccommunity,"LiHaidong,aprofessorattheInstituteofInternationalRelationsatChinaForeignAffairsUniversity,simageintheglobe,accusingthecountryofdamagingworldpeace,andontheotherhand,itattemptedtoplayupthe"Chinathreat"theoryasnoteverycountrycandevelopLongMarchrockets,,itisascientificandtechnologicalissueandshouldnotbepoliticized,dayrevealedthatChinadiditshomeworkduringtheinitialrocketdesignphaseontheliftoffposition,trajectoryplanningandrelatedtechnicalpreparations,satmosphere,theUSmilitaryandcertainEUagenclstageoftheLongMarch-5BY2carrierrocketisakindofanti-missiletrainingforthem."Althoughtheupperstageofthisrocketisnotarealmissile,thepredictionofitsflighttrajectoryandreentryperformanceparameterscanbeuse,"saidHuangZhicheng,asmallamountofdebris,,thisproblemhasnotbeenfinallysolvedbyanycountry.Comet-likeorseriousthreatInstarkcontrasttomediareportsonChinasrocketdebris,burningrocketremnantsofthesecondstageoftheUSSpaceXFalcon9rocket,whichcrashedonafarminWashingtonstateinMarch,weredescribedbymedialikeAssociatedPressas"leavingcomet-liketrails"dsadoptedbysomeWesternforcesinthewayChinaistreated,saidSong,as"theyarenotreallyworriedaboutcausingharmtopeople,butsinceitsaChineserocket,theyhavepoliticizedthematter,putalabelonitandthenhypedit."XingJianwei,vicechiefdesigneroftheLongMarch2Ccarrierrocket,toldmediathatChinaisdevelopingthecapabilitytocontroltherocketsfairing(whenthenoseconethatprotectsthepayloadisjettisonedinspace)afte,,hence,itisseriouslyanti-intellectualtoclaimthatChineserocketshaveaparticularlyhighrisk,analystssaid."InowreallydoubtthecommonsenseofscienceinWesternsociety,sincetheybelieveinsuchlogic,"WangYanannoted.(Webeditor:LiangJun,Bianji)。