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Quasi-steady doublet-lattice correction for aerodynamic gust response prediction in attached and separated transonic flow

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Abstract

A quasi-steady doublet-lattice correction method is used to predict aerodynamic gust responses of two different configurations: a swept wing, the so-called Aerostabil wing, and a transport aircraft configuration, the NASA Common Research Model. The results of the correction method are compared to uncorrected doublet-lattice results, and to results obtained from a nonlinear computational fluid dynamics solver, the DLR TAU-Code. The correction method agrees well with time-marching results obtained by TAU in the limit of dynamically linear gust amplitudes and improves with gust length. In separated transonic flow, an oscillation of the aerodynamic gust response can be computed.

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Acknowledgements

This work was funded by DLR programmatic research in the project ‘ALLEGRA’, as well as by the German Federal Ministry of Economics and Technology (BMWi) under Grant number 20A1102A (project ‘AeroStruct’). Moreover, the authors would like to thank Chris Wales for the support with the CFD mesh of the CRM configuration.

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Authors and Affiliations

  1. German Aerospace Center (DLR), Institute of Aeroelasticity, Bunsenstr. 10, Göttingen, 37073, Germany

    Diliana Friedewald, Reik Thormann, Christoph Kaiser & Jens Nitzsche

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  1. Diliana Friedewald
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  2. Reik Thormann
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  3. Christoph Kaiser
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  4. Jens Nitzsche
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Correspondence to Diliana Friedewald.

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Friedewald, D., Thormann, R., Kaiser, C. et al. Quasi-steady doublet-lattice correction for aerodynamic gust response prediction in attached and separated transonic flow. CEAS Aeronaut J 9, 53–66 (2018). https://doi.org/10.1007/s13272-017-0273-0

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