The inverse problem of external ballistics for identification of aerodynamic coefficients of a spin-stabilized projectile within the modified point-mass trajectory model
DOI:
https://doi.org/10.34169/2414-0651.2021.1(29).28-35Keywords:
identification of aerodynamic coefficients, spin stabilized projectile, free flight data, nonlinear model, inverse problem, the modified pointmass trajectory modelAbstract
The aim of this paper is to develop a technique for the identification of the projectile aerodynamic coefficients using the free-flight-test measurements. An algebraic method for solving the inverse problem of external ballistics is proposed. As the initial mathematical model of the projectile flight, a simplifi ed version of the modified point-mass trajectory model in explicit form is used. For all aerodynamic coefficients of the model, exact explicit analytic expressions for their dependence on the experimentally measurable trajectory parameters are derived. Importantly, within the proposed approach, the solution to the inverse problem is unique.
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