论文标题
重新进入分手事件识别的光谱功能
Spectral Features for Re-entry Break-up Event Identification
论文作者
论文摘要
在一个地面测试设施中研究了两种航空航天铝合金的碎片，包括在三个轨迹点的真实大气进入事件中由于空气动力而发生的机械载荷。发射光谱分析表明，这些材料在光谱中观察到不同的碱金属特征后失败。两种合金具有不同碱金属的特征排放。以前仅归因于观测活动中电池故障的锂线的存在可能被视为铝制破裂的标志。这对于将来的进入观察尤其有趣，因为它可以对Demising航天器的结构故障过程进行新的了解。缺乏合金元件的排放表明，这些光谱是确定航天器灭亡的候选者。地面测试中此类特征的识别将允许更确定特定的分手事件
The fragmentation of two aerospace aluminum alloys is investigated in a ground testing facility including mechanical loads as occurring due to aerodynamic forces in a real atmospheric entry event at three trajectory points. The emission spectroscopic analysis shows that these materials fail after distinct alkali metal features are observed in the spectra. The two alloys feature characteristic emissions of the different alkali metals. The presence of lithium lines that have previously been exclusively attributed to battery failure in observation campaigns may be considered as a marker for aluminum breakup. This is particularly interesting for future entry observations because it allows a new insight into the structural failure processes of the demising spacecraft. The lack of emission of alloying elements points to these spectra being a candidate for the determination of spacecraft demise. The identification of such features in ground testing will allow a more certain identification of specific break-up events
