Experimental Study of the Aerodynamic Interaction between Side-by-Side Propellers in eVTOL Airplane Mode through Stereoscopic Particle Image Velocimetry
Experimental Study of the Aerodynamic Interaction between Side-by-Side Propellers in eVTOL Airplane Mode through Stereoscopic Particle Image Velocimetry
复制标题
通过立体粒子图像测速技术研究 eVTOL 飞机模式下并排螺旋桨之间的气动相互作用
DOI：
10.3390/aerospace8090239
复制
发表时间：
2021
期刊：
影响因子：
2.6
通讯作者：
A. Zanotti
中科院分区：
文献类型：
--
作者：
A. Zanotti
并排螺旋桨是近年来为城市空中交通设计的大多数新型电动飞机 (eVTOL) 的架构特征。并排螺旋桨之间的空气动力学相互作用是表征这些新型飞机配置的流场和性能的关键现象之一。本文介绍了风洞试验的主要结果，该试验旨在研究表征这种空气动力相互作用的流动特征，特别是在 eVTOL 中的巡航飞行条件下的应用。为了实现这一目标，在并排配置的两个同向旋转螺旋桨模型之后进行了立体粒子图像测速 (PIV) 测量。三维流动调查提供了对相互作用的螺旋桨的流动物理的详细见解，特别关注通过再现城市地区的 eVTOL 的中速和快速巡航速度，在两种不同的推进比下提供的叶尖涡轨迹和尾流拓扑的相互作用效应。
Side-by-side propellers characterise the architecture of most new electric aircraft (eVTOLs) designed in recent years for urban air mobility. The aerodynamic interaction between side-by-side propellers represents one of the key phenomena that characterise the flow field and performance of these novel aircraft configurations. The present article describes the main results of a wind tunnel campaign that aimed to investigate the flow features that characterise this aerodynamic interaction, with a particular application to cruise flight conditions in eVTOLs. With this aim, stereo particle image velocimetry (PIV) measurements were performed in the wake of two co-rotating propeller models in a side-by-side configuration. The three-dimensional flow surveys provided detailed insights into the flow physics of the interacting propellers, with a particular focus on the interactional effects on the trajectory of the tip vortices and the wake topology provided at two different advance ratios by reproducing a moderate and a fast cruise speed of eVTOLs in urban areas.