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Sharp edge gust effects on aeroelastic behavior of a flexible wing with high aspect ratio

Haddadpour, H ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. Publisher: 2005
  3. Abstract:
  4. The subject of the present paper is the investigation of the sharp edged gust effects on the aeroelastic behavior of a flexible wing. It is important to determine the response of the wing to the atmospheric turbulences during normal flight. So, linear modal analysis technique and linear quasi-steady aerodynamic are used for structural modeling and aerodynamic loading, respectively. Also, Lagrange method is used to obtain the system of equations of motion. Using the normal modes of free vibration, structural and aerodynamic matrices can be constructed. Then the aeroelastic instability of the system is determined using p method. Kussner function is used to model the sharp gust effects on the system. The aeroelastic response of an airfoil and an equivalent wing is determined and compared with each other. The aeroelastic response of flexible wing shows that, the amplitude of wing tip oscillation becomes higher as the relative air speed approaches the flutter speed
  5. Keywords:
  6. Aeroelastic response ; Flexible wing ; Gust effect ; Atmospheric turbulence ; Flight dynamics ; Flutter (aerodynamics) ; Oscillations ; Wind effects ; Wings ; Aerodynamics
  7. Source: 43rd AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, 10 January 2005 through 13 January 2005 ; 2005 , Pages 14279-14293
  8. URL: https://arc.aiaa.org/doi/10.2514/6.2005-838