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Survivability analysis of tape-tether against two concurring impacts with debris

机译:胶带绳索的生存能力分析,以应对两个同时发生的碎片冲击

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摘要

It has recently been shown that a thin-tape tether, as opposite to a round one, has a high probability of survival to single impacts by space debris, under a broad range of de-orbit operation conditions. The purpose of the present work is to extend that analysis to survival to multiple impacts by smaller, but more abundant, debris. The method used here consist, essentially, in separating the particles into “large” and “small” ones. The large ones are so rare that the probability of them concurring on the same spot can be neglected. The small ones are a sort of background, and it is shown that the probability of them impinging close enough to a large particle crater to cause malfunction of the tape is negligible. A particular mission is considered, de-orbiting a 3000 kg spacecraft from 800 km altitude at 90°90° inclination by means of an aluminium tape of dimensions 10,000 m × 0.06 m × (5 × 10−5) m. It is shown that the probability that this mission survives to multiple impacts is at least 0.978. The application of this method to missions of different parameters is also discuss
机译:最近显示,与一轮绕线相反,在宽范围的离轨操作条件下,细绳子很容易幸存于空间碎片对单个撞击的影响。本工作的目的是将这种分析扩展到由较小但更丰富的碎片对多种影响的生存。此处使用的方法主要包括将颗粒分为“大”和“小”颗粒。大号是如此罕见,以至于它们在同一位置并发的可能性可以忽略不计。小颗粒是一种背景,可以证明,它们撞击到足够大的颗粒坑而导致磁带故障的可能性可以忽略不计。考虑到一个特定的任务,即使用尺寸为10,000 m×0.06 m×(5×10-5)m的铝制胶带从3000公里的航天器以90°90°的倾角从800 km高度的轨道上移出。结果表明,该任务能够承受多次撞击的可能性至少为0.978。还讨论了该方法在不同参数任务中的应用

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