Transonic flutter characteristic of an airfoil with morphing devices

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dc.contributor.authorHe, Shun
dc.contributor.authorGuo, Shijun
dc.contributor.authorLi, Wenhao
dc.date.accessioned2020-09-04T12:10:36Z
dc.date.available2020-09-04T12:10:36Z
dc.date.issued2020-08-30
dc.description.abstractAn investigation into transonic flutter characteristic of an airfoil conceived with the morphing leading and trailing edges has been carried out. Computational fluid dynamics (CFD) is used to calculate the unsteady aerodynamic force in transonic flow. An aerodynamic reduced order model (ROM) based on autoregressive model with exogenous input (ARX) is used in the numerical simulation. The flutter solution is determined by eigenvalue analysis at specific Mach number. The approach is validated by comparing the transonic flutter characteristics of the Isogai wing with relevant literatures before applied to a morphing airfoil. The study reveals that by employing the morphing trailing edge, the shock wave forms and shifts to the trailing edge at a lower Mach number, and aerodynamic force stabilization happens earlier. Meanwhile, the minimum flutter speed increases and transonic dip occurs at a lower Mach number. It is also noted that leading edge morphing has negligible effect on the appearance of the shock wave and transonic flutter. The mechanism of improving the transonic flutter characteristics by morphing technology is discussed by correlating shock wave location on airfoil surface, unsteady aerodynamics with flutter solutionen_UK
dc.identifier.citationHe S, Guo S, Li W. (2020) Transonic flutter characteristic of an airfoil with morphing devices. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Volume 235, Issue 6, May 2021, pp. 661-674en_UK
dc.identifier.issn0954-4100
dc.identifier.urihttps://doi.org/10.1177/0954410020953046
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15753
dc.language.isoenen_UK
dc.publisherSageen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectshock waveen_UK
dc.subjectflutter speeden_UK
dc.subjecttransonic dipen_UK
dc.subjectMorphing wingen_UK
dc.titleTransonic flutter characteristic of an airfoil with morphing devicesen_UK
dc.typeArticleen_UK

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