It has been known for some time that relatively short projectiles (L/D～1) penetrate with greater efficiency than long rods (L/D1), and that this effect is greater at hypervelocity. Consequently, it has been postulated that an effective penetrator technology might consist of a train of in-line short L/D projectiles. IAT has been able to design and test low-parasitic mass, multiple in-line segmented projectiles with its 115/38mm two-stage light-gas gun. The impact velocity was approximately 2.13 km/s and the projectiles were 6, 9 or 18, L/D=1 segments. The RHA steel targets were sectioned to reveal the crater morphology. The penetrator efficiency and crater morphology for the experiments were compared to results from numerical modeling using the CTH software package.
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机译：已知在一段时间内，射精相对短的射弹（L / D〜1）渗透比长杆（L / D 1）更大的效率，并且这种效果在超型处更大。因此，已经假定了有效的穿透器技术可能包括一列直接L / D射弹的火车。 IAT能够设计和测试低寄生质量，具有115 / 38mm的两级轻气枪。冲击速度约为2.13 km / s，射弹为6,9或18，l / d = 1个段。 rha钢靶分成揭示火山口形态。比较实验的渗透效率和火山口形态，与使用CTH软件包的数值建模产生。
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