Science and Technology of Energetic Materials

Vol.73, No.5 (2012)

Research paper

Characteristics of aluminum agglomeration in AP/AN composite propellants
Sho Oide, Kenichi Takahashi and Takuo Kuwahara


Aluminum(Al) particles are used in composite propellant of solid rocket for improving performance and combustion stability. However, aluminum particles have a tendency to agglomerate at the burning surface of composite propellants. It is known that these agglomerated Al particles cause low combustion efficiency. Therefore, it is necessary to study the agglomerate characteristics of Al particles at the burning surface of composite propellants.
The relation between agglomerate diameter and burning rate of propellants is obtained. Agglomerate diameter decreases with increasing burning rate. And it is expected that agglomerate diameter decreases with decreasing stay time of Al particle at burning surface.

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composite propellants, aluminum, agglomerate, burning rate, stay time

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