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Numerical Investigation of a Spoiler Effect on the Transonic Flutter Boundary

Schmalz, Martin and Quero, David (2022) Numerical Investigation of a Spoiler Effect on the Transonic Flutter Boundary. STAB-Symposium 2022, 09.-10.11.2022, Berlin, Deutschland.

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Official URL: https://www.dlr.de/as/Portaldata/5/Resources/dokumente/veranstaltungen/stab_workshop/Jahresbericht2022.pdf


In this paper, the effect of a statically deflected spoiler on the transonic flutter boundary is investigated by means of numerical 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. As basis for flutter analyses, unsteady aerodynamic loads are obtained with a linearized CFD-method in the frequency domain. The flutter results show an increase in the flutter stability boundary in the transonic dip region due to the spoiler deflection. However, this effect is very sensitive to the spoiler parameters. Especially at high Mach numbers, deterioration in the flutter stability boundary can be found for some specific spoiler deflection angles. 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/192885/
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:November 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 22-23
Series Name:Jahresbericht 2022 zum 23. DGLR-Fachsymposium
Keywords:flutter stability boundary, flutter suppression, transonic dip, shock wave, static spoiler deflection
Event Title:STAB-Symposium 2022
Event Location:Berlin, Deutschland
Event Type:national Conference
Event Dates:09.-10.11.2022
Organizer:Deutsche Strömungsmechanische Arbeitsgemeinschaft (STAB)
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:22 Dec 2022 16:29
Last Modified:22 Dec 2022 16:29

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