A semi-analytical model for the combined aeroelastic behaviour and gust response of a flexible aerofoil

作者：Berci Marco^*; Gaskell Philip H; Hewson Robert W; Toropov Vassili V

来源：Journal of Fluids and Structures, 2013, 38: 3-21.

DOI：10.1016/j.jfluidstructs.2012.11.004

• Morphing aerofoil
• Flexible aerofoil
• Membrane aerofoil
• Analytical
• Aeroelastic analysis
• Gust response

The combined aeroelastic behaviour and gust response of a flexible aerofoil is explored theoretically. The analysis comprises a structural model based on Rayleigh%26apos;s beam equation, which describes the aerofoil%26apos;s chordwise dynamics. The aerodynamic load is accounted for via Peters%26apos; state-space model for the case of a morphing aerofoil undergoing arbitrary pitching and plunging motion. By assuming a suitable modal expansion for the structural displacement, Ritz%26apos;s method is used to solve the coupled aeroelastic equations of motion in the fashion of a classic Mass-Damper-Spring system. The proposed model is validated against both previous work and established results appertaining to the stability analysis and gust response of a rigid Typical Section, with a vertical wind gust being taken as the aerodynamic perturbation. The influence of chordwise flexibility on both aeroelastic stability and gust response is investigated critically for different cases.

• 出版日期2013-4