This paper discusses the comparison between the steady-state response of a helicopter rotor blade in forward flight computed using marching-in-time algorithms and computed using imposed-periodicity algorithm. The blade is represented as a two-degree-of-freedom rigid body. The motion of the blade is modeled with a system of ordinary, nonlinear, differential equations. Runge-Kutta and predictor-corrector methods are used for marching-in-time solutions. Time finite element method based on bilinear formulation is used for imposed-periodicity solutions. Differences between the steady-state solutions obtained using marching-in-time and imposed-periodicity methods has been observed. These differences affect also the results of motion about steady-state stability analysis. The same phenomenon has been observed for a simple two-degree-of-freedom, nonlinear mass-damper-spring system.


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    Title :

    Comparison between imposed-periodicity and marching-in-time solutions of helicopter rotor blade steady-state response problem


    Additional title:

    Vergleich zwischen zwei Lösungsmöglichkeiten des Problems, das Verhalten von Hubschrauberflügeln im Gleichgewichtszustand zu berechnen


    Contributors:
    Kanwiecki, G. (author) / Sivaneri, N.T. (author) / Janik, T. (author)


    Publication date :

    1992


    Size :

    10 Seiten, 14 Bilder, 8 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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