The work presented in this paper is part of a project called ARChEaN (Aerodynamic of Rotors in Confined ENvironment) whose objective is to study the interactions of a micro drone rotor with its surroundings in the case of flight in enclosed environments such as those encountered, for example, in archeological exploration of caves. To do so the influence of the environment (walls, ground, ceiling, etc) on the rotor’s aerodynamic performance as well as on the flow field between the rotor and the surroundings is studied. This paper focuses on two different configurations, flight near the ground and flight near a corner (wall and ground), and the results are analyzed and compared to a general free flight case (i.e. far away from any obstacle). In order to carry out this analysis both numerical and experimental approaches are conducted. The objective is to validate the numerical model with the results obtained experimentally and to benefit from the advantages of both approaches in terms of flow analysis. This research work will provide knowledge on how to operate these systems as to minimize the possible negative environment disturbances, reduce power consumption and predict the micro drone’s behaviour during enclosed flights.

中文翻译：

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MAV旋翼在地面和角部效应下的空气动力学

本文中介绍的工作是一个名为 ARChEaN（受限环境中转子的空气动力学）项目的一部分，该项目的目的是研究微型无人机转子在封闭环境中飞行时与其周围环境的相互作用，例如遇到的情况，例如例如，在洞穴的考古探索中。为此，研究了环境（墙壁、地面、天花板等）对转子空气动力学性能以及转子与周围环境之间流场的影响。本文着重于两种不同的配置，近地飞行和近角飞行（墙壁和地面），并分析结果并与一般自由飞行情况（即远离任何障碍物）进行比较。为了进行这种分析，数值和实验方法都进行了。目的是用实验获得的结果验证数值模型，并从两种方法在流动分析方面的优势中受益。这项研究工作将提供有关如何操作这些系统的知识，以最大限度地减少可能的负面环境干扰，降低功耗并预测微型无人机在封闭飞行期间的行为。