A model of the heterogeneous catalysis of the combustion of condensed systems based on an anal-ysis of local changes in the burning velocity of the condensed phase of the propellant was developed. Themodel expresses the catalyst efficiency through the concentration and particle size of the catalyst and theuncatalyzed propellant burning velocity. Two experimentally determined parameters were introduced tocharacterize the effect of the chemical properties of the propellant system. The catalysis efficiency was dem-onstrated to tend to finite limits at d 0 and Uo 0. This model for the first time made it possible tocorrectly describe a wide variety of experimentally observed regularities.
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