Flight testing of the X-31A post-stall experimental aircraft started in October 1990. Within the international 'Combined X-31A Flight Test Team', DLR contributes its system identification experience and capabilities for the determination of aerodynamic parameters from flight test data. The paper presents a brief description of the hard- and software for flight test data evaluation applied by DLR to support the X-31A project on-site. It describes the different steps of the data reduction and the models used for system identification. Selected results which were achieved mainly on the basis of data from flight test conducted for handling qualities investigations are shown and compared to wind tunnel predictions. The paper discusses the aspects of on-site system identification for flight test support, including the difficulties arising from working on a low-cost program. It is based on the experience made during the initial envelope expansion of the X-31A.


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    Titel :

    System Identification for X-31A Project Support: Lessons Learned So Far


    Beteiligte:
    S. Weiss (Autor:in) / E. Plaetschke (Autor:in) / D. Rohlf (Autor:in) / H. Galleithner (Autor:in)

    Erscheinungsdatum :

    1992


    Format / Umfang :

    11 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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