Estimation of aerodynamic derivatives of projectiles from aeroballistic range data using maximum likelihood method

Raol, JR and Gopalratnam, G (1989) Estimation of aerodynamic derivatives of projectiles from aeroballistic range data using maximum likelihood method. In: Annual Paper Meeting 1989, 28 Jan 1989, Ranchi.

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    Abstract

    This paper describes the application of the maximum likelihood method to estimate the aerodynamic derivatives of (i) the AGARD standard ballistic model HB-2 from supersonic free13; flight data available in literature, and (ii) ballistic mode simulated data of a surface-to-air missile.13; For the AGARD dam, two types of dynamic models have been used: (i) body axis coordinate13; system model, and (ii) hybrid type of formulation. wherein the aerodynamic forces are in wind axis13; arid the aerodynamic moments are represented in body axis coordinate system. For surface-to-air13; missile data the equations of motion are solved in fin-body axis system. The results of this analysis13; denonstrate the suitability and function adequacy of the mathematical models used, the13; consistency of data arid power of the parameter estimation methodology in generating13; aerodynamic derivatives from realistic free flight trajectories.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Aerodynamic derivatives;AGARD;MLE software
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Flight Mechanics and Control Division, Flight Mechanics and Control Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 01 Feb 2008
    Last Modified: 17 Jun 2010 10:17
    URI: http://nal-ir.nal.res.in/id/eprint/4561

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