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Wind Turbine Wake Vortex Influence on Safety of Small Rotorcraft

van der Wall, Berend G. (2019) Wind Turbine Wake Vortex Influence on Safety of Small Rotorcraft. The Aeronautical Journal, 123 (1267), pp. 1374-1395. Cambridge University Press. doi: 10.1017/aer.2019.59. ISSN 0001-9240.

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Official URL: https://www.cambridge.org/core/journals/aeronautical-journal/article/wind-turbine-wake-vortex-influence-on-safety-of-small-rotorcraft/3FF4FF45E4A957C9BE53DD7B35C8A423


The wake vortex of lifting surfaces such as wind turbine blades or fixed-wing aircraft can heavily affect the blade aerodynamics of rotating wing aircraft. Based on blade element theo-ry the pilot controls required to mitigate such vortex effects are estimated and compared to the available control margin at the operating condition of interest. Contrary, when no pilot action is performed, the rotor blade flapping caused by the vortex are evaluated and compared to available margins. A concern of safety arises when the remaining margins become zero. The influence of the vortex strength, its core radius and orientation to the rotor disk are evaluated and the effect of rotor blade characteristics (Lock number, natural frequency) is investigated.

Item URL in elib:https://elib.dlr.de/123132/
Document Type:Article
Title:Wind Turbine Wake Vortex Influence on Safety of Small Rotorcraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
van der Wall, Berend G.berend.vanderwall (at) dlr.dehttps://orcid.org/0000-0001-6144-0921
Date:September 2019
Journal or Publication Title:The Aeronautical Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1017/aer.2019.59
Page Range:pp. 1374-1395
Publisher:Cambridge University Press
Keywords:flight safety, helicopter, autogyro, safety, wake encounter, vortex-rotor interaction, wind turbine wake
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Innovative Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:17 Sep 2019 12:00
Last Modified:17 Sep 2019 12:00

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