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Endurance improvement by battery dumping strategy considering Peukert effect for electric-powered disposable UAVs
The Aeronautical Journal ( IF 1.4 ) Pub Date : 2020-07-16 , DOI: 10.1017/aer.2020.56
X. Feng , Y. Sun , M. Chang , J. Bai

Electric-powered disposable unmanned aerial vehicles (UAVs) have wide applications due to their advantages in terms of long time flight and load capacity. Thus, improving their endurance has become an important task to enhance the performance of these UAVs. To achieve this, we investigated a battery dumping strategy which splits the battery into several packs that are used and dumped in sequence to reduce the dead weight. The Peukert effect is also considered. In this paper, the sensitivity analysis method was employed to analyse the endurance benefits for different battery weight ratios, Peukert constants and capacities, quantitatively. The results show that the endurance benefits are significantly affected by all three parameters. For ideal batteries, the endurance can be improved by 20% and 28% respectively when employing a double-pack or triple-pack battery strategy (for a battery weight ratio of 0.4), but these benefits will fall rapidly if the Peukert constant exceeds 1.0 or the battery weight declines. Besides, the endurance will be 10% longer if the lift coefficient rather than the velocity remains constant after the battery packs are dumped at a Peukert constant of 1.2.

中文翻译:

考虑Peukert效应的电动一次性无人机通过电池倾倒策略提高续航能力

电动一次性无人机(UAV)由于其在长时间飞行和负载能力方面的优势而具有广泛的应用。因此,提高其续航能力已成为提升这些无人机性能的一项重要任务。为了实现这一目标,我们研究了一种电池倾倒策略,该策略将电池分成几个电池组,按顺序使用和倾倒以减少自重。还考虑了 Peukert 效应。本文采用灵敏度分析方法,定量分析了不同电池重量比、Peukert常数和容量下的续航优势。结果表明,耐力优势受到所有三个参数的显着影响。对于理想的电池,采用双组或三组电池策略(电池重量比为 0.4)时,续航能力可分别提升 20% 和 28%,但如果 Peukert 常数超过 1.0 或电池重量,这些优势将迅速下降下降。此外,如果电池组以 1.2 的 Peukert 常数倾倒后,升力系数而不是速度保持不变,则续航时间将延长 10%。
更新日期:2020-07-16
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