The relationship of the burning rate of gun powder granulated with the varnish method with the content of a phlegmatizer in it

Abstract

It is known that the effectiveness of barrel weapons largely depends on the progressiveness of the combustion of powder charges [1]. It is usually achieved due to the shape (structure) of powder elements (tube, seven-channel grain, etc.). However, for fine-grained (thin-layer) powders used in small arms and small-caliber artillery, powder elements for technological reasons cannot have a progressive design. Such gun powders also include gun powder granulated with the lacquer method, which is characterized by a completely degressive spherical shape (spherical gun powder) [2]. To ensure progressive combustion, thin-layer powders are subjected to phlegmatization, i.e. saturation of the surface layers of powder elements with substances that reduce the burning rate. This allows you to change the burning rate according to the thickness of the burning layer, and accordingly set the required nature of the gas flow during the shot. Despite the great value of phlegmatized gunpowder for small arms and small caliber artillery, relatively few works have been devoted to the study of their combustion process.