Disturbance of Shaped Charge Jets by Bulging Armour

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1、Propellants,Explosives,Pyrotechnics26,191±195(2001)191DisturbanceofShapedChargeJetsbyBulgingArmourManfredHeld*TDW±GesellschaftfuÈrverteidigungstechnischeWirksystemembH,86523Schrobenhausen(Germany)Summarya2mmmildsteelplateonthefrontorimpactside,a20mm(8)thickmiddlelaye

2、rofDyneemaanda4mmmildsteelplateTwo¯ashX-raypicturesofthepassingjetafterabulgingarmourontheexitsideindirectcontactasgoodaspossiblewithoutarepresentedwhichgivethedisturbanceeffecttothejet±someearlieranyadhesivetothecarryingplatelayer.Bothhadanarealparticulationtimeandi

3、terativejeteruptions±butonlyaftersometime2delay.Theanalysisofthejetvelocitiesoftheeruptionsallowstodensityof21kg=mandwerebuiltfromthesameDyneemacalculatethetimeintervalsorroughlythedisturbancefrequencyofthe®bres.AUDDyneemapanel±uni-directional®bres±withausedbulgingar

4、mourarrangement.®bercontentslightlyover80%wasusedforthe®rsttest.Forthesecondtestapanelofplainwovenfabricwitha®bercontentofaround90%wastaken.Thesandwicheshad500mmlengthand250mmwidthandwerearrangedunder1.Introduction60NATO-angletotheshapedchargeaxis.Thechargewaslinedu

5、ptothecenterofthesandwiches.In1700mmdistanceBulgingarmourisaninterestingandrelativelyoftenusedorroughly15caliberstandofftotheshapedchargemildsteelprotectingsystemwhichistypicallynottoomuchpublished.witnessblocksweresettomeasuretheresidualpenetration(1)Thepatentofthea

6、uthorwas®led1973.Theprinciplecapabilityofthepartiallydisturbedjets.Amake-switchwasfunctionisalreadydescribedindetailinhisoverviewpaperarranged100mminfrontofthemildsteelblockstotrigger(2)on``Armour''1993onanumberofinterlayermaterials,the¯ashX-raysforgettingapictureoft

7、hepassedjet.Intheasthedependenceonimpactangles(Fig.11andFig.12ofprotectingcassettewasoneofthetwoinstalled2timesRef.2).``Spall''armour±calledinthisearlierpublication±is900mmlongX-ray®lmswithintensi®erscreens(Figure1).identicalto``bulging''armour.Israeliauthorspresente

8、daApictureofthetestsetupisshowninFigure2withthe(3)theoreticalconsiderationtothistopicin1992andagain115mmshapedchargeinfrontonthelef