This paper describes a structural and aeroelastic model for wing sizing and weight calculation of a strut-braced wing. The wing weight is calculated using a newly developed structural weight analysis module considering the special nature of strut-braced wings. A specially developed aeroelastic model enables one to consider wing flexibility and spanload redistribution during in-flight maneuvers. The structural model uses a hexagonal wing-box featuring skin panels, stringers, and spar caps, whereas the aerodynamics part employs a linearized transonic vortex lattice method. Thus, the wing weight may be calculated from the rigid or flexible wing spanload. The calculations reveal the significant influence of the strut on the bending material weight of the wing. The use of a strut enables one to design a wing with thin airfoils without weight penalty. The strut also influences wing spanload and deformations. Weight savings are not only possible by calculation and iterative resizing of the wing structure according to the actual design loads. Moreover, as an advantage over the cantilever wing, employment of the strut twist moment for further load alleviation leads to increased savings in structural weight.


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    Titel :

    Flexible Wing Model for Structural Sizing and Multidisciplinary Design Optimization of a Strut-Braced Wing


    Beteiligte:
    F. H. Gern (Autor:in) / A. H. Naghshineh (Autor:in) / E. Sulaeman (Autor:in) / R. K. Kapania (Autor:in) / R. T. Haftka (Autor:in)

    Erscheinungsdatum :

    2000


    Format / Umfang :

    13 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Flexible Wing Model for Structural Wing Sizing and Multidisciplinary Design Optimization of a Strut-Braced Wing

    Gern, F. H. / Haftka, R. T. / Kapania, R. K. et al. | British Library Conference Proceedings | 2000



    Flexible Wing Model for Structural Sizing and Multidisciplinary Design Optimization of a Strut-Braced Wing

    Gern, Frank H. / Naghshineh, Amir H. / Sulaeman, Erwin et al. | NTRS | 2000


    Structural Wing Sizing for Multidisciplinary Design Optimization of a Strut-Braced Wing

    Frank H. Gern / Amir H. Naghshineh-Pour / Erwin Sulaeman et al. | AIAA | 2001