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Article Dans Une Revue Journal of Aircraft Année : 2023

Fast Nonlinear Method for Static Aeroelasticity Applied to High Aspect Ratio Wings

Résumé

A low-computational-cost method is proposed in this paper to predict steady-state nonlinear aeroelastic response for high-aspect-ratio wings. This fast nonlinear static aeroelasticity method relies on a simple but robust mathematical approach. The work presented in this paper evaluates the accuracy of a nonlinear aerodynamic method on a large range of Mach numbers for a geometry representative of a typical industrial high-aspect-ratio-wing aircraft. The robustness of the method relies on the accurate estimation of the local pressure field based on an aerodynamic database using a local incidence estimated with a vortex lattice method. The database can be filled with flight test, wind tunnel test, or high-fidelity numerical simulation. The structural deformation is provided by a coupled aeroelastic high-fidelity numerical simulation, and so this paper focuses mainly on the development and validation of the aerodynamic model. Then, the flexible coefficients of the wing are compared to the high-fidelity aeroelastic numerical simulations for a set of Mach numbers ranging from subsonic to transonic conditions. The results presented in this paper show that the present method is very accurate for low-Mach-number regimes (error is lower than 1% on lift), and it is also adapted to transonic flow regimes because the error on lift is lower than 5%. For high Mach numbers, the current solution commits larger errors on drag and pitching moment coefficients.

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Dates et versions

hal-03985408 , version 1 (14-02-2023)

Identifiants

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Oriol Chandre-Vila, Jean-Philippe Boin, Bernard Barriety, Yann Nivet, Joseph Morlier, et al.. Fast Nonlinear Method for Static Aeroelasticity Applied to High Aspect Ratio Wings. Journal of Aircraft, 2023, pp.1-21. ⟨10.2514/1.C037052⟩. ⟨hal-03985408⟩
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