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Communication Dans Un Congrès Année : 2023

Multilinear analysis of influential parameters on the combustion velocity of ternary pyrotechnic compositions

Résumé

Combustion velocity is an important parameter for the formulation of pyrotechnic compositions. It is affected by several parameters that are studied in this work. Pyrotechnic compositions studied in the present work are ternary compositions composed of an oxidiser, a metallic reducer and a binder. This binder is also an energetic molecule. These three components are respectively strontium peroxide (SrO2), magnesium (Mg), and 2,4-Dinitroanisole (DNAN). These model ternary pyrotechnic compositions were designed and produced at Nexter Munitions facility and characterized in PRISME Laboratory in Bourges. Thermal degradation and experimental burning velocities were already published. The influence of specific parameters on the evolution of combustion velocity of ternary pyrotechnic composition are investigated using multilinear analysis, with the help of dimensionless numbers. These parameters are the amount of each constituent (oxidiser, reducer, binder), porosity, magnesium granulometry, combustion enthalpy and thermal conductivity estimated by analytical laws. Using the studied parameters, three dimensionless numbers were implemented. Their influence on the combustion velocity was assessed and confirmed. Multilinear regressions were performed using these parameters, and the dimensionless numbers, to explain their joint influence on the combustion velocity. Results showed different joint influences before or after the combustion velocity maximum as a function of equivalence ratios.
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hal-04501388 , version 1 (12-03-2024)

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  • HAL Id : hal-04501388 , version 1

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Charles Rosères, Léo Courty, Christophe Boulnois, Philippe Gillard. Multilinear analysis of influential parameters on the combustion velocity of ternary pyrotechnic compositions. 46th International Pyrotechnics Society Seminar (Europyro 2023), 2023, Saint malo, France. ⟨hal-04501388⟩
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