CAJ | 학술논문

为在轻气炮上实现二级飞片的超高速发射,设计了波阻抗连续变化的渐变阻抗飞片.变阻抗飞片撞击面为镁,底面为钨,中间为镁、铜和钨的掺合材料.建立了变阻抗飞片超高速发射的计算模型,采用分成单元层描述阻抗变化.对变阻抗飞片超高速发射二级飞片过程进行了数值模拟计算,分析了阻抗分布、二级飞片直径和缓冲层厚度对二级飞片速度的影响.结果表明:在优化阻抗分布、二级飞片直径和缓冲层厚度的条件下,二级飞片的最大速度能够达到16 km/s以上.
위재경기포상실현이급비편적초고속발사,설계료파조항련속변화적점변조항비편.변조항비편당격면위미,저면위오,중간위미、동화오적참합재료.건립료변조항비편초고속발사적계산모형,채용분성단원층묘술조항변화.대변조항비편초고속발사이급비편과정진행료수치모의계산,분석료조항분포、이급비편직경화완충층후도대이급비편속도적영향.결과표명:재우화조항분포、이급비편직경화완충층후도적조건하,이급비편적최대속도능구체도16 km/s이상.
A graded-density flier plate with gradual change impedance was designed to launch the secondary flier plate in hypervelocity on a light gas gun.The impact surface of graded-density flier plate was made of magnesium,the base surface was made of tungsten,and the middle part was made of the mixture of magnesium,copper and tungsten.A calculating model of hypervelocity launch was developed.The numerical simulations of hypervelocity launch with graded-density flier plate were conducted.The effects of change law of impedance,diameter of secondary flier plate and thickness of buffer on the secondary flier plate velocity were analyzed.The calculated results indicated that the maximum velocity of the secondary flier plate exceeded 16 km/s in the condition of optimizing the change law of impedance of graded-density flier plate,diameter of secondary flier plate,and thickness of buffer.