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首页> 外文期刊>Journal of Spacecraft and Rockets >Hypervelocity Impact Testing of Multiwall Targets Using Multiple Simultaneously Launched Projectiles
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Hypervelocity Impact Testing of Multiwall Targets Using Multiple Simultaneously Launched Projectiles

机译：使用多个同时发射的弹丸对多壁目标进行超高速冲击测试

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摘要

Multiwall shield designs for spacecraft have been studied extensively in the last four decades as a means of reducing the perforation threat of the near-Earth particulate environment over equivalent single-wall structures. The performance of an impact shield is typically characterized by its ballistic limit equation, which is obtained through high-speed impact tests that typically use spherical projectiles fired in light gas guns. Traditional firings employ only one projectile per launch package. However, some facilities have taken to launching multiple projectiles of different sizes in a single launch package. In light of the significant role played by a ballistic limit equation in risk assessment, a study was performed to examine whether or not this method of simultaneously launching several projectiles at a single target could give rise to some issues which may compromise the impact test data obtained in this manner. It was found that interference between debris clouds created by the impacting (simultaneously launched) particles could indeed occur. This in turn could affect the damage levels caused by the impacting particles as compared to those that would be seen in more standard single-projectile impact tests under the same impact conditions.
机译：在过去的四十年中，对航天器的多壁护罩设计进行了广泛的研究，以此来减少近地微粒环境对等效单壁结构的射孔威胁。冲击防护罩的性能通常以其弹道极限方程为特征，该方程是通过高速冲击试验获得的，该试验通常使用在轻型气枪中发射的球形弹丸。传统射击每个发射包只使用一个弹丸。然而，一些设施已经采取了在单个发射包中发射不同大小的多个弹丸的措施。考虑到弹道极限方程在风险评估中所起的重要作用，进行了一项研究，以检查这种同时向单个目标发射几枚弹丸的方法是否会引起一些问题，这些问题可能会损害获得的冲击试验数据以这种方式。已经发现，撞击（同时发射）的粒子产生的碎片云之间确实存在干扰。与在相同冲击条件下更标准的单弹冲击试验中所看到的相比，这反过来可能会影响由冲击粒子引起的破坏程度。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2013年第2期|358-364|共7页
  • 作者

    William Schonberg; Steve Evans; Michael D. Bjorkman;

  • 作者单位

    Missouri University of Science and Technology, Rolla, Missouri 65409;

    NASA Marshall Space Flight Center, Huntsville, Alabama 35812;

    Jacobs Technology, Houston, Texas 77058;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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