A brief review of flight research carried out at the University of Toronto Institute for Aerospace Studies (UTIAS) is provided. Work has continued on helicopter parameter estimation in collaboration with the Flight Research Laboratory or the National Aeronautical Establishment. Under the auspices of the Advisory Group for Aeronautical Research Development (AGARD) Working Group 18, this project is to analyze with UTIAS algorithms the flight test data for three helicopters: the BO-105, the Puma, and the Apache. Recent work has concentrated on parameter estimation in the context of 6 degrees of freedom, linear models, using the time domain methods of step-wise regression, and maximum likelihood estimation. Attention was also given to the determination of the subset of all parameters in the model that are significant in describing the helicopter response for the particular maneuvres of the flight tests. This was done by a series of verification analyses, where model parameters obtained from one experiment were used for predicting the response for an independent experiment. A study of the criteria for helicopter model selection was carried out, which examined whether the flight dynamics of conventional maneuvers can be successfully modelled by a 6 degree of freedom model without determining the complete set of stability and control derivatives.


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    Titel :

    Flight Research


    Beteiligte:
    J. H. Deleeuw (Autor:in) / T. Quach (Autor:in)

    Erscheinungsdatum :

    1989


    Format / Umfang :

    2 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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