Abstract
The combustion completeness of Al agglomerates affects the performance of solid rocket motor, reducing the agglomerate sizes is effective to enhance the performance. In this study, agglomeration and combustion characteristics of Al particles near the burning surface of ammonium perchlorate (AP) composite propellants were observed using a pulsed laser system. Moreover, to suppress the agglomerate diameter and use the micro-explosion characteristics of Mg-Al particles, Al was partially replaced with magnesium-aluminum (Mg-Al) alloy Moreover, the relation between the proportion of Mg-Al particles and agglomeration diameter of Al particles was investigated. Measurement results showed that a small amount of Mg-Al mixture successfully reduced the agglomerated Al particle size. Furthermore, the agglomeration process that accumulates on AP particles was observed in the aluminized propellant through burning surface observation. Thus, the addition of Mg-Al particles was confirmed to be effective in suppressing the agglomeration process.
