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首页> 外文期刊>Journal of Wind Engineering and Industrial Aerodynamics: The Journal of the International Association for Wind Engineering >A feasibility study of micro air vehicles soaring tall buildings
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A feasibility study of micro air vehicles soaring tall buildings

机译：微型飞机飞越高层建筑的可行性研究

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摘要

Micro Air Vehicles (MAVs) are person-portable platforms, which due to their small size and corresponding manoeuvrability show great potential for surveillance in urban environments. Achieving useful endurance using on-board electric power plants remains challenging despite rapid advances in battery energy storage density. This paper examines experimentally the feasibility of using orographic 'slope' lift in urban built environments to enhance the operational capability of MAV platforms by increasing range and endurance. A representative building in an urban environment was selected for investigation. The flow-field velocity in the upwind region of a 1:100 scale model of this building was mapped in a wind-tunnel with a reproduced vertical velocity profile. The vertical velocity component was found to be in the order of 15%-50% of the mean wind velocity at building height. These results were compared with data measured on the full-size building and found to agree well. The sink-rate of a soaring MAV was measured through flight-testing and found to be less than the available vertical velocity component in the upstream flow field for average wind speeds which indicates that soaring is feasible, provided that controllability challenges in high-turbulence environments can be overcome.
机译：微型飞行器（MAV）是可携带的平台，由于其体积小和相应的可操作性，它们在城市环境中具有巨大的监视潜力。尽管电池能量存储密度迅速提高，但使用车载发电厂实现有用的耐久性仍然具有挑战性。本文通过实验检验了在城市建筑环境中使用地形“坡度”举升装置通过增加航程和续航能力来增强MAV平台的作战能力的可行性。选择了城市环境中的代表性建筑进行调查。将该建筑物的1：100比例模型的上风向区域中的流场速度绘制在风洞中，并复制了垂直速度分布图。发现垂直速度分量约为建筑物高度平均风速的15％-50％。将这些结果与在全尺寸建筑物上测得的数据进行了比较，发现非常吻合。通过飞行测试测量了飞升的MAV的下沉率，发现该平均速率小于上游流场中平均风速下的垂直速度分量，这表明在高湍流环境中可控性面临挑战的情况下，飞升是可行的是可以克服的。

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