The purpose of this paper is to describe an integrated approach to spin analysis based on 6-DOF (degrees of freedom) fully nonlinear equations of motion and a three-dimensional multigrid Euler method used to specify a flow model. Another purpose of this study is to investigate military trainer performance during a developed phase of a deliberately executed spin, and to predict an aircraft tendency while entering a spin and its response to control surface deflections needed for recovery.

    Design/methodology/approach

    To assess spin properties, the calculations of aerodynamic characteristics were performed through an angle-of-attack range of −30 degrees to +50 degrees and a sideslip-angle range of −30 degrees to +30 degrees. Then, dynamic equations of motion of a rigid aircraft together with aerodynamic loads being premised on stability derivatives concept were numerically integrated. Finally, the examination of light turboprop dynamic behaviour in post-stalling conditions was carried out.

    Findings

    The computational method used to evaluate spin was positively verified by comparing it with the experimental outcome. Moreover, the Euler code-based approach to lay down aerodynamics could be considered as reliable to provide high angles-of-attack characteristics. Conclusions incorporate the results of a comparative analysis focusing especially on comprehensive assessment of output data quality in relation to flight tests.

    Originality/value

    The conducted calculations take into account aerodynamic and flight dynamic interaction of an aerobatic-category turboprop in spin conditions. A number of manoeuvres considering different aircraft configurations were simulated. The computational outcomes were subsequently compared to the results of in-flight tests and the collected data were thoroughly analysed to draw final conclusions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Aerodynamic and flight dynamic interaction in spin


    Contributors:

    Published in:

    Publication date :

    2018-10-02


    Size :

    1 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Aerodynamic/Dynamic Interaction

    D. T. Mook / A. H. Nayfeh | NTIS | 1990


    Aerodynamic/Dynamic Interaction

    D. T. Mook / A. H. Nayfeh | NTIS | 1987


    Nonlinear dynamic-aerodynamic interaction

    THRASHER, D. / MOOK, D. / NAYFEH, A. | AIAA | 1978



    Spin Aerodynamic Modeling for a Fixed-Wing Aircraft Using Flight Data

    Gresham, James L. / Simmons, Benjamin M. / Hopwood, Jeremy W. et al. | AIAA | 2022