The importance of recognizing that each lower-order model used for rotorcraft parameter identification has a limited range of applicability is illustrated in some detail. Examples are given to illustrate the use of conditioning the test input signals and the potential of using multi-axis test inputs to enhance the parameter identifiability. The paper discusses the benefits and limitations of using frequency sweeps as flight-test input signals for identification of frequency response for rotorcraft and for the subsequent fitting of parametric transfer-function models. This paper demonstrates the major role played by analytical modeling and the understanding of the physics involved in the rotorcraft flight dynamics, particularly understanding the limit of lower-order models, in achieving successful rotorcraft parameter identification. (Author)


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    Titel :

    Role of Modeling and Flight Testing in Rotorcraft Parameter Identification


    Beteiligte:
    R. T. Chen (Autor:in) / M. B. Tischler (Autor:in)

    Erscheinungsdatum :

    1986


    Format / Umfang :

    39 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





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