Effect of the physical state of activators on the combustion of composite rocket propellants. II. Colloidal inhibitors

The effect of inhibitors added as powders and colloidal solutions to propellants on the combustion of ammonium perchlorate composite rocket propellants is investigated. Transformation of chemical governors of the composite-propellant burning rate into the ultradisperse state ($<$ 0.05 $\mu$m) increases the effectiveness of the inhibitors and decreases their concentration in the propellant provided that particle aggregation is prevented both in synthesis of the governors and during preparation of the propellant. It is shown that multilinear expansion is applicable for a quantitative description of the dependence of the burning rate on the concentration and particle size of the additive.