Demanding aerodynamic modeling requirements for military and civilian aircraft have provided impetus for researchers to improve computational and experimental techniques. Model validation is a key component for these research endeavors so this study is an initial effort to extend conventional time history comparisons by comparing model parameter estimates and their standard errors using system identification methods. An aerodynamic model of an aircraft performing one-degree-of-freedom roll oscillatory motion about its body axes is developed. The model includes linear aerodynamics and deficiency function parameters characterizing an unsteady effect. For estimation of unknown parameters two techniques, harmonic analysis and two-step linear regression, were applied to roll-oscillatory wind tunnel data and to computational fluid dynamics (CFD) simulated data. The model used for this study is a highly swept wing unmanned aerial combat vehicle. Differences in response prediction, parameters estimates, and standard errors are compared and discussed


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    Titel :

    System Identification Applied to Dynamic CFD Simulation and Wind Tunnel Data


    Beteiligte:
    Murphy, Patrick C. (Autor:in) / Klein, Vladislav (Autor:in) / Frink, Neal T. (Autor:in) / Vicroy, Dan D. (Autor:in)

    Kongress:

    AIAA Atmospheric Flight Mechanics Conference ; 2011 ; Portland, OR, United States


    Erscheinungsdatum :

    2011-08-08


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    System Identification Applied to Dynamic CFD Simulation and Wind Tunnel Data

    Murphy, P. / Klein, V. / Frink, N. et al. | British Library Conference Proceedings | 2011


    System Identification Applied to Dynamic CFD Simulation and Wind Tunnel Data

    Murphy, P. / Klein, V. / Frink, N. et al. | British Library Conference Proceedings | 2011


    System Identification Applied to Dynamic CFD Simulation and Wind Tunnel Data

    Murphy, Patrick / Klein, Vladislav / Frink, Neal et al. | AIAA | 2011


    Transport Aircraft System Identification from Wind Tunnel Data

    Murphy, Patrick / Klein, Vladislav | AIAA | 2008