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Numerical Investigation of a Spoiler Effect on the Transonic Flutter Boundary

Schmalz, Martin and Quero, David (2023) Numerical Investigation of a Spoiler Effect on the Transonic Flutter Boundary. In: STAB/DGLR Symposium 2022, pp. 14-23. Springer. STAB/DGLR Symposium 2022, 9.-10. Nov. 2022, Berlin, Deutschland. doi: 10.1007/978-3-031-40482-5_2. ISBN 978-3-031-40481-8.

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Official URL: https://link.springer.com/chapter/10.1007/978-3-031-40482-5_2


In this paper, the effect of a statically deflected spoiler on the transonic flutter boundary is investigated by means of numerical airfoil models. For this purpose, a spoiler geometry is added to the NACA64A010 airfoil and a wing cross-section of the NASA's Common Research Model. The deflection angle and the hinge-line position of the spoiler are varied. Unsteady aerodynamic loads are obtained with a linearized CFD method in the frequency domain. The flutter results show an increase in flutter velocity in the transonic dip region due to the spoiler deflection, which seems to be connected to a change of the aerodynamic loading of the airfoil. However, deterioration in the flutter stability boundary can be found for some specific spoiler deflection angles, especially at high Mach numbers. A careful use of the spoiler and a dedicated scheduling scheme dependent on the Mach number are therefore suggested if the spoiler effect is exploited as part of future flutter suppression technologies.

Item URL in elib:https://elib.dlr.de/197605/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Investigation of a Spoiler Effect on the Transonic Flutter Boundary
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schmalz, MartinUNSPECIFIEDhttps://orcid.org/0000-0002-5627-5316UNSPECIFIED
Quero, DavidUNSPECIFIEDhttps://orcid.org/0000-0003-2602-4265UNSPECIFIED
Date:23 September 2023
Journal or Publication Title:STAB/DGLR Symposium 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 14-23
EditorsEmailEditor's ORCID iDORCID Put Code
Wagner, ClausUNSPECIFIEDhttps://orcid.org/0000-0003-2273-0568UNSPECIFIED
Heller, GerdAirbus Defence and Space GmbHUNSPECIFIEDUNSPECIFIED
Krämer, EwaldInstitut für Aerodynamik und Gasdynamik Universität StuttgartUNSPECIFIEDUNSPECIFIED
Weiss, JulienILR - Aerodynamik, Technische Universität BerlinUNSPECIFIEDUNSPECIFIED
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM, volume 154)
Keywords:flutter stability boundary, flutter suppression, transonic dip, shock wave, static spoiler deflection
Event Title:STAB/DGLR Symposium 2022
Event Location:Berlin, Deutschland
Event Type:national Conference
Event Dates:9.-10. Nov. 2022
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 - Digital Technologies
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Simulation
Deposited By: Schmalz, Martin
Deposited On:29 Sep 2023 11:26
Last Modified:10 Oct 2023 15:03

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