The advantages of using multiple surrogates for approximation and reduction of helicopter vibration are studied. Multiple approximation methods, including a weighted-average approach, are considered so that pitfalls associated with only using a single best surrogate for the rotor blade vibration-reduction problem are avoided. A vibration objective function corresponding to a flight condition in which blade-vortex interaction causes high levels of vibration is considered. The design variables consist of cross-sectional dimensions of the structural member of the blade and nonstructural masses. The optimized designs are compared with a baseline design resembling a Messerschmitt-Bölkow-Blohm BO-105 blade. The results indicate that at relatively little additional cost compared with optimizing a single surrogate, multiple surrogates can be used to locate various reduced-vibration designs that would be overlooked if only a single approximation method was employed, and the most accurate surrogate may not lead to the best design.


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    Titel :

    Multiple-surrogate approach to helicopter rotor blade vibration reduction


    Weitere Titelangaben:

    Multiple Surrogat-Näherung zur Vibrationsverminderung von Hubschrauber-Rotorblättern


    Beteiligte:
    Glaz, Bryan (Autor:in) / Goel, Tushar (Autor:in) / Li Liu (Autor:in) / Friedmann, Peretz P. (Autor:in) / Haftka, Raphael T. (Autor:in)

    Erschienen in:

    AIAA Journal ; 47 , 1 ; 271-282


    Erscheinungsdatum :

    2009


    Format / Umfang :

    12 Seiten, 8 Bilder, 8 Tabellen, 32 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch