Investigation of small-scale propellers under non-axial inflow conditions

Cerny, Michael; Breitsamter, Christian

doi:10.1016/j.ast.2020.106048

10.1016/j.ast.2020.106048

Document type:: Zeitschriftenaufsatz
Author(s):: Cerny, Michael; Breitsamter, Christian
Title:: Investigation of small-scale propellers under non-axial inflow conditions
Abstract:: Small-scale propellers, especially those used on conventional multicopter configurations or in the context of urban air mobility, may experience high inflow angles. In order to improve their aerodynamic efficiency, a better understanding of the flow-fields that occur under non-axial inflow conditions is required. Therefore, both isolated and ducted small-scale fixed-pitch propellers are analyzed at a range of inflow angles from zero to 180 degrees, to investigate their steady and temporal resolved loads. Furthermore, the influence of the inflow angle on the flow field is investigated. The load data is also used to simulate the efficiency of different configurative propulsion concepts. The aerodynamics coefficients obtained experimentally, as well as the flow field analysis by particle image velocimetry (PIV), are in close agreement with the unsteady numerical results obtained by URANS calculations. © 2020 Elsevier Masson SAS «
Small-scale propellers, especially those used on conventional multicopter configurations or in the context of urban air mobility, may experience high inflow angles. In order to improve their aerodynamic efficiency, a better understanding of the flow-fields that occur under non-axial inflow conditions is required. Therefore, both isolated and ducted small-scale fixed-pitch propellers are analyzed at a range of inflow angles from zero to 180 degrees, to investigate their steady and temporal resolv... »
Keywords:: Drone, Duct, Non-axial inflow, Propeller, UAV, Urban air mobility
Dewey Decimal Classification:: 620 Ingenieurwissenschaften
Journal title:: Aerospace Science and Technology
Year:: 2020
Journal volume:: 106
Pages contribution:: 106048
Covered by:: Scopus
Language:: en
Fulltext / DOI:: doi:10.1016/j.ast.2020.106048
WWW:: https://www.sciencedirect.com/science/article/abs/pii/S1270963820307306
Publisher:: Elsevier BV
E-ISSN:: 1270-9638
Notes:: Funding text The authors would like to thank the Bavarian Research Foundation ( Bayerische Forschungsstiftung ) for funding of the HyProp research project under the grant number AZ-1277-17 . Further, we gratefully acknowledge the successful collaboration and support by the project partner Rolls-Royce Deutschland Ltd & Co . We give special thanks to ANSYS for providing the flow simulation software. The authors thank the company APC Propellers for providing the geometrical data of the analyzed propeller.
Date of publication:: 01.11.2020
TUM Institution:: Lehrstuhl für Aerodynamik und Strömungsmechanik
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