1,22121.0500032.150080------ResearchonAccelerativeCharacteristicsofThreeKindsofCoaxialInductionCoilLaunchersZhaoKeyi1,2ZhangQianfan2LiZhiyuan1ChengShukang2AbstractAsfarasthecoaxialinductioncoillauncher(CICL)isconcerned,itcanbeclassifiedasouter-driveCICL(ODCICL),inner-driveCICL(IDCICL)andinner-outer-driveCICL(IODCICL)accordingtothelocationrelationshipbetweendriving-coilandarmature.Thedriving-coilisoutofthearmatureinODCICL,andthatisinthearmatureinIDCICL.Therearetwodriving-coils(innerdriving-coilandouterdriving-coil)inIODCICL.Innerdrive-coilisinarmatureandouterdrive-coilisoutofarmature.TheresearchesontheODCICLhavebeenmadewidelyanddeeply,buttheresearchesonIDCICLandIODCICLhavebeenignored.ThepaperdiscussesthecharacteristicsofthethreekindsofCICL,andinvestigatesthedistributionsofmagneticfieldandeddyfieldinthethreekindsofCICLbymeansoffiniteelementanalysismethod.Researchresultsshowthefollowingpoints:TheaccelerativecharacteristicofIDCICListheworstamongthethreekindsofCICL,butitfitsforaccelerativeloadwithbigvolumeandhighmass;TheaccelerativecharacteristicofODCICListhebestamongthethreekindsofCICL;TheIODCICL,especiallythemagneticfieldreconnectionIODCICL,hasalsogoodaccelerativecharacteristic,andthedistributionoftheeddycurrentinthearmatureisrelativelyuniform.Butitsstructureisrelativelycomplex,whichleadtodesignandrealizeitmoredifficultthanIDCICLandODCICL.Keywords:coaxialinductioncoillauncherinner-drive;outer-driveinner-outer-driveaccelerationcharacteristics1[1][2-3][4-5][6-9][10]Matlab201042322.1-11a1b1c-abc-12.2-33.1-Z=53.211-/mm303030/mm404040/mm404040/g237237237/mm7431743/mm27632753/mm44444444/48482424/m356525353.32RZZ=0Z1000F5kV1-t=0.00012st=0.00033st=0.00021s19.86kA9.176kA15.371kA22abc-14.2kN76kN2010490.5kNabc-22a30T7-8T2b12-13T2c12T2c---L1L2M12L=L1+L2-2M12-33a3b---ab-324~6201044544--91.156kN0t0.54ms76kN0t0.75ms20kNG(F)0()dtGFFt=G(F)5t=0.00012s0.15mmt=0.00075s6.95mmt=0.00159s17mm5--t=0.00033st=0.00021s5.75mm4.17mm150mm612.33m/s110m/s-103.4m/s-64--[1]J.A.Andrews,J.R.Devine.ArmatureDesignforCoaxialInductionLauncher.IEEETransactiononMagnetics[J].1991,27(1):639-643.53201045351234[1]WilliamF.OberleandBradleyD.Goodle,Theroleofelectrothermal-chemical(ETC)gunpropulsioninenhancingdirect-firegunlethality,16THInternationalSymposiumonBallistics,SANFRANCISCO,CA,23-28September1996.[2]KevinJ.White,IrvinStobie,WilliemOberle,GaryKatulkaandSimonDriesen,CombustioncontrolRequirementsinhighloadingdensity,solidpropellantETCgunfirings,IEEEtransactionsonmagnetics,vol.33,No.1,January1997.[3]HansK.Haak,PaulSchaffers,ThomasH.G.G.Weise,andHolgerG.Wisken,Basicinvestigationsina70-mmfiringsimulator,IEEEtransactionsonmagnetics,vol.39,No.1,January2003.[4]A.Kay,D.Hensel,C.SteinbachandS.Bleickert,Improvedfiringperformancewitha120-millimeterelectrothermal-chemical(ETC)gun,21stInternationalSymposiumonBallisticsAdelaide,SouthAustralia,19-23April,2004.[5]A.Chaboki,S.Zelenak,B.Isle,Recentadvancesinelectrothermal-chemicalgunpropulsionatUnitedDefence,L.P.,IEEEtransactionsonmagnetics,vol.33,No.1,January1997.[6]D.Zoler,N.Shafir,D.Forte,E.Kot,A.Ravid,S.WaldandM.Sudai,Studyofplasmajetcapabilitiestoproduceuniformignitionofpropellants,ballisticgainandsignificantdecreaseofthetemperaturegradienteffect,PropulsionPhysicsLaboratory,SoreqNRC,Yavne81800,Israel.[7]JahnDyvik,JuleighHerbig,RandallAppleton,RecentactivitiesinElectro-ThermalChemicalLauncherTechnologiesatBAEsystem,2006.[8]GloriaP.WrenandWilliamF.Oberle,InfluenceofhighloadingdensitychargeconfigurationsonperformanceofElectrothermal-Chemical(ETC)guns,IEEEtransactionsonmagnetics,vol.37,No.1,January2001.[9]ThomasH.G.G.Weise,JosephKruse,PaulSchaffersandHans-KarlHaak,StatusandResultsoftheGermanR&DProgramonETCTechnologies,IEEETransactionsonMagnetics,Vol.37,No.1,January,2001.45[2]J.H.Chang,E.B.Becker,M.D.Driga.CoaxialElectromagneticLauncherCalculationsUsingFE-BEMethodandHybridPotentials.IEEETransactiononMagnetics[J].1993,29(1):655-660.[3]R.J.Kaye,E.C.Cnare,M.Cowan,B.W.Dugginandetal.,DesignandperformanceofSandiascontactlesscoilgunfor50mmprojectile,IEEETrans.Magn.,Vol.29,no.1,pp.680-685,Jan.1993.[4]A.Y.Wu.ParameterStudiesforTravelingWaveCoaxialLauncher.IEEETransactiononMagnetics[J].1991,27(1):617-622.[5]J.A.Andrews.CoilgunStructures.IEEETransactiononMagnetics[J].1993,29(1):637-642.[6]B.Marder.Acoilgundesignprimer.IEEETransactiononMagnetics[J].1993,29(1):701-705.[7]R.J.Kaye,I.R.Shokair,R.W.Wavrikandetal..DesignandEvaluationofCoilsfora50mmDiameterInductionCoilgunLauncher.IEEETransactiononMagnetics[J].1995,31(1):478-483.[8]I.R.Shokair,M.Cowan,R.J.Kaye,B.M.Marder.PerformanceofanInductionCoilLauncher.IEEETransactiononMagnetics[J].1995,31(1):510-515.[9]Z.Zabar,X.N.Lu,E.Levi,J.Creedon.ExperimentalResultsandPerformanceAnalysisofa500m/secLinearInductionLauncher(LIL).IEEETransactiononMagnetics[J].1995,31(1):522-527.[10]CaoYanjie,LiuWenbiao,LiRuifeng,ZhangYi,ZouBengui.StudyofDischargePositioninMulti-stageSynchronousInductiveCoilgun.IEEETransactiononMagnetics[J].2009,45(1):518-521.1973-2010