Direct estimation of nonlinear aerodynamic coefficients

Pashilkar, AA and Kamali, C and Raol, JR (2007) Direct estimation of nonlinear aerodynamic coefficients. In: AIAA Atmospheric Flight Mechanics Conference and Exhibit, 20-23 Aug 2007, Soutli Carolina, USA.

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    Abstract

    In this paper a parameter estimation technique is proposed which allows for direct updates to the aerodynamic coefficients represented in the form of table lookup. The proposed method is capable of capturing the nonlinearities in the coefficients. It is also possible to capture joint dependence of the coefficient on one or more independent variables. The estimation is cast in the form of linear least squares problem. The recursive form of this algorithm is also proposed. The results are demonstrated using simulated data as well as flight data.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Parameter estimation technique;Aerodynamic coefficients; Aircraft model;Linear interpolation
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Flight Mechanics and Control Division, Flight Mechanics and Control Division, Flight Mechanics and Control Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 19 Feb 2008
    Last Modified: 17 Jun 2010 10:26
    URI: http://nal-ir.nal.res.in/id/eprint/4611

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