论文部分内容阅读
文章研究了低温下空间碎片对典型Whipple防护结构的超高速撞击效应。首先在二级轻气炮设备上研制出使用液氮可将撞击靶冷却至-150℃且满足低温超高速撞击试验要求的低温装置。利用该装置开展了低温条件下的超高速撞击试验,对低温和室温两种条件下的试验结果进行了比对,并分别对缓冲屏穿孔特性、碎片云特性和后墙损伤特性之间的差异进行了分析。文章最后给出低温下典型Whipple防护结构的弹道极限曲线。
The article investigates the effect of space debris on the hypervelocity impact of a typical Whipple shield at low temperatures. Firstly, a cryogenic device that can cool the impact target to -150 ℃ using liquid nitrogen and meet the requirements of low-temperature and high-speed impact test is developed on the secondary light gas gun equipment. The device was used to carry out the ultrahigh-speed impact test at low temperature, and the comparison of the test results under low temperature and room temperature conditions was conducted. The differences between the perforation characteristics of the buffer screen, the cloud features of debris and the damage characteristics of the back wall were respectively analyzed Analyzed. Finally, the article gives the ballistic limit curve of a typical Whipple guard structure at low temperatures.