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A reactive material double-bumper shield for centimeter sized projectile
International Journal of Impact Engineering ( IF 5.1 ) Pub Date : 2021-09-16 , DOI: 10.1016/j.ijimpeng.2021.104028
Siyuan Ren 1 , Qingming Zhang 2 , Qiang Wu 1 , Renrong Long 2 , Liangfei Gong 2, 3 , Yangyu Lu 2
Affiliation  

The hypervelocity impact of space debris will cause fatal damage to spacecraft. At present, most of the protective shield structures can only resist the impact of millimeter sized projectiles, and it is very difficult for the protective structure with the finite area density and overall spacing to be impacted by the projectile with the diameter ≥1cm without failure. In this paper, a PTFE (polytetrafluoroethylene)/Al (aluminum) reactive material double-bumper shield for centimeter sized space debris was presented, and the experiments of projectiles with hypervelocity impact on PTFE/Al reactive material double-bumper shields were carried out by using two-stage light-gas gun. The hypervelocity impact characteristics of Aluminum alloy double-bumper shield and PTFE/Al reactive material double-bumper shield were compared by numerical simulation. The ballistic limit curve of the PTFE/Al reactive material double-bumper shield was obtained by experiments and numerical simulations. The PTFE/Al reactive material double-bumper shield can resist the impact of the projectiles with the diameter ≥1cm at the low velocity range, intermediate velocity range, and the high velocity range. The PTFE/Al reactive material double-bumper shield can stop projectiles with 2∼4 times greater mass than the Aluminum alloy double-bumper shield at these impact conditions, and the PTFE/Al reactive material double-bumper shield can provide better protection than the Aluminum alloy double-bumper shield of equivalent weight. Compared with the Nextel/Kevlar Stuffed-Whipple shield, the impact resistance of PTFE/Al reactive materials is not lower than that of Nextel/Kevlar fiber materials.



中文翻译:

一种厘米级弹丸反应材料双保险杠防护罩

空间碎片的超高速撞击会对航天器造成致命的伤害。目前,大部分防护罩结构只能抵抗毫米级弹丸的冲击,而对于面密度和总间距有限的防护结构来说,直径≥1cm的弹丸撞击而不会失效是非常困难的。本文提出了一种用于厘米级空间碎片的 PTFE(聚四氟乙烯)/Al(铝)反应材料双保险杠防护罩,并进行了弹丸对 PTFE/Al 反应材料双保险杠防护罩的超高速撞击试验。使用两级轻气枪。通过数值模拟比较了铝合金双保险杠防护罩和聚四氟乙烯/铝反应材料双保险杠防护罩的超高速冲击特性。通过实验和数值模拟得到了聚四氟乙烯/铝反应材料双保险杠防护罩的弹道极限曲线。聚四氟乙烯/铝反应材料双保险杠防护罩在低速范围、中速范围和高速范围内可抵抗直径≥1cm的弹丸的冲击。在这些冲击条件下,PTFE/Al 反应材料双保险杠防护罩可以阻挡质量比铝合金双保险杠防护罩大 2~4 倍的弹丸,并且 PTFE/Al 反应材料双保险杠防护罩可以提供比铝合金双保险杠防护罩更好的保护。同等重量的铝合金双保险杠防护罩。与Nextel/Kevlar Stuffed-Whipple屏蔽相比,PTFE/Al反应材料的抗冲击性不低于Nextel/Kevlar纤维材料。

更新日期:2021-09-16
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