Nonlinear aerodynamic model structure determination using statistical measures

Kamali, C and Pashilkar, A. A (2009) Nonlinear aerodynamic model structure determination using statistical measures. Project Report. National Aerospace Laboratories, Bangalore.

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    Abstract

    The stepwise regression is a well-established technique used to determine aerodynamic model structure from flight data. This report discusses the application of stepwise regression to a nonlinear estimation method proposed previously by the authors, for model structure determination. The approach can also be used for the updating aerodynamic database models in table look-up form. The current results obtained for model structure determination for a reference problem are compared against the results obtained using the well known least squares multivariate linear estimation. Simulated data of a transport aircraft is used to prove the concept. Finally, an application of the technique for the aero database update of a high performance fighter aircraft is discussed.

    Item Type: Proj.Doc/Technical Report (Project Report)
    Uncontrolled Keywords: Nonlinear parameter estimation, stepwise regression
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Flight Mechanics and Control Division, Flight Mechanics and Control Division
    Depositing User: Ms Indrani V
    Date Deposited: 19 Jul 2011 10:11
    Last Modified: 19 Jul 2011 10:11
    URI: http://nal-ir.nal.res.in/id/eprint/9453

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