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首页> 外文期刊>The Aeronautical Journal >Viability of joined flight for small unmanned aerial vehicles
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Viability of joined flight for small unmanned aerial vehicles

机译：加入飞行的生存能力为小无人驾驶飞行器

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摘要

The range of small, electrically powered UAVs is still limited by the mass specific energy of batteries. This paper investigates the idea that, in cases where multiple aircraft must transit to the same location, savings in mass or an extension of achievable range are possible when they join wingtip-to-wingtip. The viability of joined flight is investigated by quantifying the relative magnitude of savings resulting from increased aerodynamic efficiency and that of penalties due to the increased structural and component weights. Through a parametric analysis the level of savings achievable is found to be greatly dependent on the proportion of the flight spent in a joined configuration and aircraft design parameters such as wing loading, aspect ratio and the added weight of the joining mechanism. A custom, multidisciplinary UAV sizing algorithm is presented and utilised to design several sample aircraft, featuring two different joining mechanism architectures. The results verify the findings of the parametric study and indicate that mass savings are possible only for moderate to low aspect ratios, with semi-permanent magnetic joining mechanism performing better than rigid structural ones, even when the joined fight segment accounts for only 30% of the total airborne time.
机译：小型电源无人机的范围仍然受电池的质量特定能量的限制。本文调查了这个想法，因为在多个飞机必须过境到同一位置的情况下，当他们加入WingTip-to-Wingtip时，可以节省质量或可实现的范围的延伸。通过量化由于空气动力学效率提高和由于结构和组分重量增加而导致的空气动力学效率增加的相对幅度以及由于惩罚而导致的罚球产生的相对幅度来研究加入飞行的可行性。通过参数分析，发现可获得的节省水平大大依赖于在连接的配置和飞机设计参数中花费的飞行的比例，例如机翼装载，纵横比和加入机构的附加重量。定制的多学科UAV大小算法呈现并利用了设计了多种示例飞机，具有两个不同的连接机制架构。结果验证了参数学研究的结果，并表明大规模节省仅适用于中等至低纵横比，并且即使当加入的战斗段仅占30％时，半永久性磁连接机构也能更好地执行比刚性的结构更好总空气中的时间。

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