简介:Theresearchona30mmelectrothermal-chemical(ETC)gunincludingtheoreticalsimulationandexperimentalresultsispresentedinthispaper,Thepredictionsofthetheoreticalmodelwhichiscomposedofthreeparts(i.e.,pulseformingnetwork,plasmageneratorandinteriorballistices)areingoodagreementwiththeexperiments.,Inaddition.wehaveperformdsomeliquidpropellantandsoildpropellantexperiments,respectively,Amongthesolidpropellantexperiments.wehaveinvestigatedtheignitionmodesofpropellantandhighvelocitylaunchere.Asaresult,the25:75mixtureofoctanceandhydrogenperoxdehasabettereffectthanotherliquidpropellants.Whenthepropellantsareignitednearbythebottomofprojectileinchamberbyusinganullagetubeconnectedwiththeplasmagenerator,thekineticenergyofprojectilewillincrease,whilethechamberpressurewilldecrease,Withatotalimputelectricalenergyof180kJ,theexitvelocityofprojectileisupto2.1km/sorso.
简介:内容摘要:ETC是当今世界上最便捷高效的高速路、桥梁等交通要道的收费方式,如何提升ETC的运营维护能力,对管理者提出了更高的要求。本文正是基于当下运营维护管理中存在的问题,分析出产生这些问题的原因,提出了运营管理方式的多元化与规范化、管理效率的全方位提升、提高ETC运营维护能力的管理措施。