Combustible cartridge case formulation and evaluation

Abstract The formulation of combustible cartridge case was studied by changing the percentage of ingredients namely; nitrocellulose (NC), nitroguanidine (NiGu), cellulosic fibres, dibutylphthalate (DBP) and diphenylamine (DPA). A composition containing around 55% nitrocellulose & balance cellulosic fibers and nitroguanidine along with 3.5 parts dibutylphthalate & 1 part of diphenylamine was found compatible with triple base multi-tubular propellant, besides having reasonably good mechanical and ballistic properties.