The Role of Nano-Aluminium in Burning Behavior of Solid Composite Propellants

Metallic nanoparticles are widely used in high energy materials (explosives, propellants and pyrotechnics). Nanoparticles are used in solid propellants as fuel additives in order to improve the performance. In this paper, the role of nano-aluminum particles on burning behavior of solid composite propellant has been investigated. Nano-aluminum particles are considered as one of the most important energetic components of metallic fuel in the solid composite propellants. Studies showed that the addition of nano-aluminum particles increases the burning rate, reducing the amount of agglomeration, decreasing diameter of burning particles, falling combustion temperature and reducing the amount and size of residual ash. The use of nano-aluminium particles leads to reduction the pressure exponent in the burning rate law. Based on reviews size reduction of
nano-aluminium particles from micron to nano, increases the burning rate of solid composite propellants about 100 percent.