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Experimental and theoretical investigation of stall flutter in an elastic wing

Abstract

A highly flexible continuous wing model has been built to study either coupled-mode flutter or stall flutter in a wind tunnel. This model utilizes a composite cantilever beam arrangement that provides the bending and torsional stiffness, cladding segments representing a NACA0012 geometry and an added slender body allowing for the control of the ratio of the torsional and flapwise natural frequencies . In the present paper we will focus on a series of stall flutter experiments, tracking the motion of the tip of the wing to capture post-critical oscillation modes. Following the work of Tang and Dowel, the associated nonlinear post-critical behavior, due to both dynamic stall and static deflection, will also be studied using a continuous model including the ONERA dynamic stall formulation for the unsteady aerodynamics.
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Dates and versions

hal-04070849 , version 1 (16-04-2023)

Identifiers

  • HAL Id : hal-04070849 , version 1

Cite

Todd Currier, Xavier Amandolese, Yahya Modarres-Sadeghi. Experimental and theoretical investigation of stall flutter in an elastic wing. Second International Symposium on Flutter and its Application, ISFA 2020, May 2020, Paris, France. ⟨hal-04070849⟩
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