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Influence of Configurational Parameters on the Vortex System of a Rotor in Hover

Heintz, Alexander and Schwarz, Clemens and Wolf, Christian and Raffel, Markus (2024) Influence of Configurational Parameters on the Vortex System of a Rotor in Hover. In: AIAA SciTech 2024 Forum. AIAA SciTech Forum and Exposition 2024, 2024-01-08 - 2024-01-12, Orlando, USA. doi: 10.2514/6.2024-0896. ISBN 978-1-62410-711-5.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2024-0896


The blade tip vortices in the wake of a rotor are essential for the aerodynamic behavior of a helicopter. Due to the high complexity, a detailed and high resolution simulation of a rotor wake is challenging and in many cases requires experimental validation. In particular, the study of secondary vortices that occur between the helically arranged blade tip vortices is part of the current research. Therefore, this paper presents an experimental study of the influence of different configurational parameters on the development of secondary vortices and their contribution to the vortex breakdown of a rotor in hover. The aim is to gain insight into which configurational parameters have an influence on the occurrence of secondary structures. An extensive database of more than 30 different configurations was created to validate the numerical simulations and methods. It was found that the blade passing frequency is the main contributor to the occurrence of secondary structures. Taking into account all the cases studied, a linear dependence between the number of secondary vortices detected and the blade passing frequency was found

Item URL in elib:https://elib.dlr.de/202350/
Document Type:Conference or Workshop Item (Speech)
Additional Information:eISBN: 978-1-62410-711-5
Title:Influence of Configurational Parameters on the Vortex System of a Rotor in Hover
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Heintz, AlexanderUNSPECIFIEDhttps://orcid.org/0009-0001-4371-7138152679371
Wolf, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-9052-7548UNSPECIFIED
Raffel, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-3340-9115152679376
Date:8 January 2024
Journal or Publication Title:AIAA SciTech 2024 Forum
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
EditorsEmailEditor's ORCID iDORCID Put Code
Keywords:vortex decay, secondary vortices, rotor wake, helicopter, aerodynamics
Event Title:AIAA SciTech Forum and Exposition 2024
Event Location:Orlando, USA
Event Type:international Conference
Event Start Date:8 January 2024
Event End Date:12 January 2024
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Rotorcraft and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, GO
Deposited By: Heintz, Alexander
Deposited On:08 Feb 2024 10:45
Last Modified:24 Apr 2024 21:02

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