Impact of aerodynamic interactions on aeroelastic stability of wing-propeller systems

  • This paper presents initial findings from aeroelastic studies conducted on a wing-propeller model, aimed at evaluating the impact of aerodynamic interactions on wing flutter mechanisms and overall aeroelastic performance. The flutter onset is assessed using a frequency-domain method. Mid-fidelity tools based on the time-domain approach are then exploited to account for the complex aerodynamic interaction between the propeller and the wing. Specifically, the open-source software DUST and MBDyn are leveraged for this purpose. The investigation covers both windmilling and thrusting conditions. During the trim process, adjustments to the collective pitch of the blades are made to ensure consistency across operational points. Time histories are then analyzed to pinpoint flutter onset, and corresponding frequencies and damping ratios are identified. The results reveal a marginal destabilizing effect of aerodynamic interaction on flutter speed, approximately 5%. Notably, the thrusting condition demonstrates a greater destabilizing influence compared to the windmilling case. These comprehensive findings enhance the understanding of the aerodynamic behavior of such systems and offer valuable insights for early design predictions and the development of streamlined models for future endeavors.

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Metadaten
Author:Nils BöhnischORCiD, Carsten BraunORCiD, Pierre MarzoccaORCiD, Vincenzo MuscarelloORCiD
DOI:https://doi.org/10.3390/app14198709
ISSN:2076-3417
Parent Title (English):Applied Sciences
Publisher:MDPI
Place of publication:Basel
Document Type:Article
Language:English
Year of Completion:2024
Date of first Publication:2024/09/26
Date of the Publication (Server):2024/10/01
Volume:14
Issue:19
Article Number:8709
Note:
This article belongs to the Special Issue "Advances in Unsteady Aerodynamics and Aeroelasticity"
Peer Review:Ja
Link:https://doi.org/10.3390/app14198709
Zugriffsart:weltweit
Institutes:FH Aachen / Fachbereich Luft- und Raumfahrttechnik
open_access (DINI-Set):open_access
collections:Verlag / MDPI
Open Access / Gold
Licence (German): Creative Commons - Namensnennung