Journal of Aerospace Science and Technology

Journal of Aerospace Science and Technology

Aeroelastic Instability Analysis of a wing equipped with a conventional Aerodynamic Control Surface

Document Type : Original Article

Authors
1 Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Iran
2 Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran
Abstract
In this research, for the first time, two types of conventional plain and single-slotted aerodynamic control surfaces have been compared and investigated from an aeroelastic point of view. For aeroelastic modeling, geometrically exact fully intrinsic beam equations are combined with Peter’s unsteady aerodynamic model in an incompressible flow regime. In order to check the aeroelastic stability of the wing, first the resulting non-linear partial differential equations are discretized by using the central finite difference method, and then linearized about the static equilibrium. Finally by using the eigenvalue analysis of linearized equations, the stability of the system versus different parameters are evaluated. The validation of the results has been achieved through comparison with the results presented in the references. Then the effects of various important parameters of the control surface on the speed and frequency of flutter instability have been investigated for two types of conventional aerodynamic control surfaces for the first time and hence this is the main novelty of this study. It is found that the improving trend of the single-slotted control surface is more pronounced at lower chord ratios and the location closer to the wingtip than the plain control surface. Also, the importance of paying attention to the type of control surface in aeroelastic stability became more clear.
Keywords

Subjects


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Volume 17, Issue 2
October 2024
Pages 137-145

  • Receive Date 14 April 2024
  • Revise Date 22 May 2024
  • Accept Date 02 June 2024
  • First Publish Date 02 June 2024