Burning of extended powder elements in the combustion chamber

The study of powder charge combustion is important for the design of technical products. In the present work, the combustion of charge from powder elements in the form of plates of split and slotted tubes has been studied. The elements were subjected to combustion in a model open combustion chamber with variation in charge density and initial temperature. As a result of experiments, pressure diagrams $p\left(t\right)$ recorded on photo paper were obtained. The analysis of the diagrams showed that the value of the charge density significantly affects the value of the maximum pressure in the chamber. At the same time, the change in the initial temperature affects the maximum pressure less significantly. Plates and split tubes are the regressive powder elements and have similar pressure diagrams. The slit elements are subjected to destruction, the burning surface of the slotted sample increases and then decreases. The analysis of pressure diagrams showed that the slotted elements allow obtaining larger pressures at lower charge densities and in less time as compared to the elements that maintain their integrity. To facilitate the search for charge parameters, an approximate general solution of the continuity equation is proposed and possible methods for obtaining function $p\left(t\right)$ for different powder elements from this solution are indicated.