Abstract

AbstractThe article presents the comparison of nonlinear and linear models’ responses regarding the determination of rocket static and dynamic stability. A full nonlinear model was shown along with the derivation of the linearized model utilizing the small perturbation theory. Criteria for determination of static and dynamic stability were also presented. A simulational model was created, and the results of its validation based on the flight data of the FOK rocket, as well as plots and tables containing the comparison of both models were provided. The results show that the linear simplification of the full nonlinear model is sufficient in order to determine rocket stability during all phases of the flight.KeywordsModellingSimulationRocketLinearization

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