Experimental and numerical investigations of a 2D aeroelastic airfoil encountering a gust in transonic conditions

  • Fabien HuvelinEmail author
  • Arnaud Lepage
  • Sylvie Dequand
Original Paper


In order to make substantial progress in reducing the environmental impact of aircraft, a key technology is the reduction of aircraft weight. This challenge requires the development and the assessment of new technologies and methodologies of load prediction and control. To achieve the investigation of the specific case of gust load, ONERA defined a dedicated research program based on both wind tunnel test campaigns and high-fidelity simulations. To reach the experimental objectives, a set-up was designed, manufactured, and implemented within the ONERA S3Ch transonic wind tunnel facility. The first component, called gust generator, consists of two oscillating airfoils installed upstream of the wind tunnel test section and allows to produce air flow deflections. The second component, the test model, is a two degrees-of-freedom aeroelastic model of a supercritical airfoil. A test campaign has been performed leading to the generation of databases for high-fidelity tools validation. These databases have been used in order to assess the capabilities of the elsA code (ONERA-Airbus-Safran property) using its aeroelastic module and a gust model based on the field velocity method. A validation process has been defined to move from experimental results obtained in the wind tunnel with wall boundaries to industrial modeling computed with farfield boundaries. The full process was applied to a transonic case with sine gust excitation signals.


Aeroelasticity Wind tunnel test CFD Gust response Unsteady coupled simulations 



A part of the research leading to these results has received funding from the European Union’s Seventh Framework Program (FP7/2007–2013) for the Clean Sky Joint Technology Initiative under Grant agreement CSJU-GAM-SFWA-2008-001. The numerical studies presented in this paper have been partially funded by Airbus, Safran, and ONERA which are co-owners of the software elsA.


  1. 1.
    Albano, E., Rodden, W.P.: A doublet-lattice method for calculating lift distributions on oscillating surfaces in subsonic flows. AIAA J. 7(2), 279–285 (1969)CrossRefzbMATHGoogle Scholar
  2. 2.
    Valente, C., Wales, C., Jones, D., Gaitonde, A., Cooper, J.E., Lemmens, Y.: A doublet-lattice method correction approach for high fidelity gust loads analysis. In: 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Grapevine, Texas, January (2017)Google Scholar
  3. 3.
    Raveh, D.E.: CFD-based models of aerodynamic gust response. J. Aircr. 44(3), 888–897 (2007) CrossRefGoogle Scholar
  4. 4.
    Heinrich, R.: Simulation of interaction of aircraft and gust using the TAU-code. In: Dillmann, A., Heller, G., Krämer, E., Kreplin, H.P., Nitsche, W., Rist, U. (eds.) New Results in Numerical and Experimental Fluid Mechanics IX. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 124, Springer, Cham (2014)Google Scholar
  5. 5.
    Liauzun, C.: Aeroelastic response to gust using CFD techniques. In: Proceedings of 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels, FEDSM2010-ICNMM2010, Montreal, Canada, August (2010)Google Scholar
  6. 6.
    Tang, D.M., Cizmas, P.G.A., Dowell, E.H.: Experiments and analysis for a gust generator in a wind tunnel. J. Aircr. 33(1), 139–148 (1996)CrossRefGoogle Scholar
  7. 7.
    Ricci, S., Scotti, A.: Wind tunnel testing of an active controlled wing under gust excitation. In: 49th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Material Conference. Schaumburg, IL, USA, April (2008)Google Scholar
  8. 8.
    Lancelot, P., Sodja, J., Werter, N., De Breuker, R.: Design and testing of a low subsonic wind tunnel gust generator. In: International Forum on Aeroelasticity and Structural Dynamics, Saint Petersburg, Russia, June (2015)Google Scholar
  9. 9.
    Silva, W.A., Vartio, E., Shimko, A., Kvaternik, R.G., Eure, K.W., Scott, R.C.: Development of aeroservoelastic analytical models and gust load alleviation control laws of a sensorcraft wind-tunnel model using measured data. In: IFASD: 2007, International Forum on Aeroelasticity and Structural Dynamics, Stockholm, Sweden, June (2007)Google Scholar
  10. 10.
    Neumann, J., Mai, H.: Gust response: simulation of an aeroelastic experiment by a fluid–structure interaction method. J. Fluids Struct. 38, 290–302 (2013)CrossRefGoogle Scholar
  11. 11.
    Girodroux-Lavigne, P.: Progress in Steady/Unsteady Fluid–Structure Coupling with Navier–Stokes Equations. International Forum on Aeroelasticity and Structural Dynamics, Munich (2005)Google Scholar
  12. 12.
    Dugeai, A.: Aeroelastic Developments in the elsA Code and Unsteady RANS Applications. International Forum on Aeroelasticity and Structural Dynamics, Munich (2005)Google Scholar
  13. 13.
    Girodroux-Lavigne, P.: Recent Navier–Stokes Aeroelastic Simulations Using the elsA Code for Aircraft Applications. International Forum on Aeroelasticity and Structural Dynamics, Stockholm (2007)Google Scholar
  14. 14.
    Cambier, L., Heib, S., Plot, S.: The Onera elsA CFD software: input from research and feedback from industry. Mech. Ind. 14(3), 159–174 (2013)CrossRefGoogle Scholar
  15. 15.
    Gazaix, M., Jolles, A., Lazareff, M.: The elsA object-oriented computational tool for industrial applications. In: 23rd Congress of ICAS, Toronto September (2002)Google Scholar
  16. 16.
    Heinrich, R., Reimer, L.: Comparison of Different Approaches for Gust Modeling in the CFD Code Tau. International Forum on Aeroelasticity and Structural Dynamics, Bristol (2013)Google Scholar
  17. 17.
    Sitaraman, J., Iyengar, V.S., Baeder, J.D.: On field velocity approach and geometric conservation law for unsteady flow simulations. In: 16th AIAA Computational Fluid Dynamics Conference, Orlando FL, June (2003)Google Scholar
  18. 18.
    Huvelin, F., Girodroux-Lavigne, P., Blondeau, C.: High Fidelity Numerical Simulations for Gust Response Analysis. International Forum on Aeroelasticity and Structural Dynamics, Bristol (2013)Google Scholar
  19. 19.
    Wales, C., Cook, R.G., Jones, D.P., Gaitonde, A.L.: Comparison of aerodynamic models for 1-cosine gust loads prediction. In: International Forum on Aeroelasticity and Structural Dynamics, Como, Italy, June (2017)Google Scholar
  20. 20.
    Huntley, S.J., Jones, D., Gaitonde, A.: Aeroelastic gust response of an aircraft using a prescribed velocity method in viscous flows. In: 23rd AIAA Computational Fluid Dynamics Conference, Denver USA, June (2017)Google Scholar
  21. 21.
    Harder, R.L., Desmarais, R.N.: Interpolation using surface splines. J. Aircr. 9(2), 189–191 (1972)CrossRefGoogle Scholar
  22. 22.
    Delbove, J.: Contribution aux outils de simulation aéroélastique des aéronefs: prédiction du flottement et déformation statique des voilures. In: Thèse de doctorat Dynamique des fluides Toulouse, 2005ESAE0006, ENSAE (2005)Google Scholar
  23. 23.
    Brion, V., Lepage, A., Amosse, Y., Soulevant, D., Senecat, P., Abart, J.C., Paillart, P.: Generation of vertical gusts in a transonic wind tunnel. Exp. Fluids 56(7), 145–161 (2015)CrossRefGoogle Scholar
  24. 24.
    Rodde, A.M., Archambaud, J.P.: OAT15A airfoil data. In: AGARD ADVISORY REPORT N° 303: “A selection of Experimental Test Cases for the Validation of CFD Codes”Google Scholar
  25. 25.
    Jacquin, L., Molton, P., Deck, S., Maury, B., Soulevant, D.: An experimental study of shock oscillation over a transonic supercritical profile. In: 35th AIAA Fluid Dynamics Conference and Exhibit, Toronto, Canada, June (2005)Google Scholar
  26. 26.
    Farmer, M.G.: A two-degree of freedom mount system with low damping for testing rigid wings at different angles of attack. In: NASA-TM-83302 Langley Research Center (1982)Google Scholar
  27. 27.
    Lepage, A., Amosse, Y., Le Bihan, D., Poussot-Vassal, C., Brion, V., Rantet, E.: A complete experimental investigation of gust load: from generation to active control. In: International Forum on Aeroelasticity and Structural Dynamics, Saint Petersburg, Russia, June (2015)Google Scholar

Copyright information

© Deutsches Zentrum für Luft- und Raumfahrt e.V. 2019

Authors and Affiliations

  1. 1.Aerodynamics, Aeroelasticity, Acoustics DepartmentONERA-The French Aerospace LabChâtillonFrance

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