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首页> 外文期刊>Journal of the American Helicopter Society >Technical Note Comparison of the Hovering Efficiency of Rotating Wing and Flapping Wing Micro Air Vehicles
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Technical Note Comparison of the Hovering Efficiency of Rotating Wing and Flapping Wing Micro Air Vehicles

机译：微型飞行器旋翼和扑翼的悬停效率比较技术说明

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Trends exposing the aerodynamic efficiency of hover-capable micro aerial vehicles (MAVs) were examined. Published data for several types of MAV concepts were reviewed; these concepts encompass conventional rotating wing configurations, cyclorotors, flotors, and entomopter-like biomimetic flapping wings. The work also included assessments of the hovering performance of avian and entomological flyers. For each concept, published performance data were used to establish comparative trends for power loading as a function of the effective disk loading. No independent assessments of the quality or accuracy of the published measurements and/or calculations were performed. It is shown that the hovering efficiencies of MAV concepts lie on a simple correlation curve that is bounded by the theoretical levels of hovering performance as given by the well-known momentum theory. AH hover-capable concepts that can achieve low disk loadings are shown to achieve relatively good power loadings. Such concepts, however, do not necessarily achieve the best levels of aerodynamic efficiency or figure of merit (FM). It is explained why the power loading, and not the FM, is the most objective basis on which the aerodynamic efficiency of hover-capable devices should be compared. The results show that when compared on the basis of the same disk loading, the biomimetic flapping wing systems have, at least thus far, attained lower values of FM compared to those of rotor systems. Although avian and entomological flyers operate at very low effective disk loadings with good power loadings, the available measurements suggest that they do not always achieve very high values of FM.
机译：研究了具有悬停功能的微型飞行器（MAV）的空气动力学效率的趋势。审查了几种类型的MAV概念的公开数据；这些概念包括传统的旋转机翼构型，回旋翼，飞行器和仿照翅片状仿生扑翼。这项工作还包括对鸟类和昆虫学传单的悬停性能的评估。对于每个概念，使用已发布的性能数据来确定功率加载相对于有效磁盘加载的函数的比较趋势。没有对发布的测量和/或计算的质量或准确性进行独立评估。结果表明，MAV概念的悬停效率位于一条简单的相关曲线上，该曲线受众所周知的动量理论给出的悬停性能的理论水平的限制。显示了可以实现低磁盘负载的AH悬停功能的概念，可以实现相对较好的功率负载。但是，这些概念不一定能达到最佳的空气动力学效率或品质因数（FM）。解释了为什么功率负载而不是FM是最客观的依据，因此应该比较具有悬停功能的设备的空气动力学效率。结果表明，当基于相同的盘载荷进行比较时，仿生扑翼系统至少到目前为止比转子系统具有更低的FM值。尽管禽类和昆虫学传单的磁盘有效载荷非常低，但功率负载却很好，但可用的测量表明它们并不总是能获得很高的FM值。

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