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The impact of the elasticity on the butterfly-modeled wing displacement under air laminar flow.
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  • Ibrahim Kromba,
  • Fayçal Saffih,
  • Sofiane Soulimane,
  • Mohamed Salim Bouhlel
Ibrahim Kromba
Universite Abou Bekr Belkaid Tlemcen Faculte de Technologie

Corresponding Author:[email protected]

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Fayçal Saffih
Centre de Developpement des Technologies Avancees
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Sofiane Soulimane
Universite Abou Bekr Belkaid Tlemcen Faculte de Technologie
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Mohamed Salim Bouhlel
Universite de Sfax Institut Superieur de Biotechnologie de Sfax
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Abstract

When an airfoil is placed in a flow, it is subjected to forces whose result consists mainly of a lift and drag force. On each section of the profile, the local densities strongly depend on the wing having an aerodynamic surface with the velocity of the flow. At first sight, an aerodynamic profile can be considered a rigid body with which we associate an initial takeoff angle. But, to optimize its performance (maximize its lift and minimize its drag), it is vital to consider deformations under the flow force. The profile deforms mainly in bending and torsion. When this deformation takes place, it is called a flexible profile. Our study on elasticity has shown, for a loading in bending-torsion simulating an aerodynamic force, significant flexibility of a material allows the optimization of a wing beat. Indeed, the results indicate an increase in lift concentrated mainly in the wing contour. Therefore, to maximize the drag the rigid profile of the material is set. The rigid wing interacts with the air concentrated in its center and ensures a planar flight. Second, the study made it possible to affirm flight control. The wings’ position at ±20° from the center of interaction showed that it was possible to ensure a better displacement. The last simulation made it possible to study the particles of collisions by using an approximate elasticity compromise at 572MPa and an angle of incidence of ±20° affirming an optimal contact between the modeled wing and the laminar flow.