This work considers the aeroelastic optimization of transport wingbox structures under three different types of design variables: sizing (for example, skin thickness), shape (planform and airfoil twist/thickness), and topology/layout (rib and stringer placement). The numerical optimization is conducted with a nested bilevel method: with a nongradient-based global optimizer at the outer level (a Bayesian infill method), and a gradient-based optimizer at the inner level. Design variables are divided among the two groups based on the availability of adjoint derivatives. Results are provided in terms of a tradeoff between fuel burn reduction and structural weight reduction, with a focus on demonstrating the importance of including topology/layout variables in the optimization process. These layout variables have historically presented substantial numerical difficulties owing to their nongradient-based nature, and the results shown here are able to quantify the performance degradation (fuel burn, weight) when these layout variables are frozen.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Shape, Sizing, and Topology Design of a Wingbox Under Aeroelastic Constraints


    Beteiligte:

    Erschienen in:

    Journal of Aircraft ; 58 , 6 ; 1406-1415


    Erscheinungsdatum :

    2021-08-11


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch