Publication de 6 numéros par an
ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678
Indexed in
EFFECTS OF ALUMINUM-BASED MUTLIMETAL PARTICLES ON SOLID PROPELLANTS
RÉSUMÉ
Aluminum is well known to increase the specific impulse of composite propellants due to a higher adiabatic flame temperature associated with it. Aluminized propellants typically produce large agglomerates on the burning surface of solid propellants. These agglomerates are the main drawback of using aluminum in composite solid propellants, as they give rise to two-phase flow losses and slag accumulation, resulting in as much as 10% reduction in specific impulse. Nanosized aluminum powder enhances the burning rate of solid propellants significantly; however, the oxide content in it is much higher than micron-aluminum due to its considerable specific surface. This paper discusses an experimental investigation focused on the effects of micron-sized AlMg on the combustion behavior of solid propellants. Combustion characteristics and combustion condensed particles of solid propellants loaded with AlMg were investigated here. The results show that AlMg is more effective than Al in increasing the burning rate of hydroxyl-terminated polybutadiene based propellant since much heat was released with the help of the reaction between Al and Mg. The particle size of condensed combustion particles was reduced greatly thanks to the use of AlMg.
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