Tow-steered composites are optimized for use in tailoring the aeroelastic behavior of a simple two-dimensional composite wing, with particular emphasis on improving both flutter/divergence airspeeds and gust loads. Symmetric layups are considered where the fibers vary in orientation along the wingspan and chord. Tow-steered laminates were found to increase the instability airspeed by up to 7% compared with optimized straight-fiber laminates and by 13% compared with optimized laminates with standard ( 0 / ± 45 / 90 deg ) plies. Tow-steered laminates were also found to reduce the peak wing root gust loads (up to 52%) and the correlated gust loads (up to 24%). The lowest gust loads were reached with higher order nonlinear fiber angle variations when either all plies were optimized or when two-dimensional fiber angle variations were used. Optimization strategies that allowed the fiber angles to vary freely in each ply generally performed better than optimizations based on the rotation of ( 0 / ± 45 / 90 deg )-ply stacks along the span of the wing.


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    Title :

    Optimization of Tow-Steered Composite Wing Laminates for Aeroelastic Tailoring


    Contributors:
    Stodieck, O. (author) / Cooper, J. E. (author) / Weaver, P. M. (author) / Kealy, P. (author)

    Published in:

    AIAA Journal ; 53 , 8 ; 2203-2215


    Publication date :

    2015-06-08


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Optimisation of Tow-Steered Composite Wing Laminates for Aeroelastic Tailoring (AIAA 2014-0343)

    Stodieck, O. / Cooper, J.E. / Weaver, P. et al. | British Library Conference Proceedings | 2014


    Aeroelastic Tailoring of a Representative Wing Box Using Tow-Steered Composites

    Stodieck, O. / Cooper, J. E. / Weaver, P. M. et al. | AIAA | 2016