On the Characterization of Propulsive Powders: Optimization of the Operating Pressure According to the Combustion Surface. Case of Congolese Propellants

starting from the Chinese propellants - our reference - of composition well known and different from that of the Congolese propellants, we have in the course of this study, demonstrated by means of gas flow equations and conditions of isentropic expansion that it was it is possible to provide Congolese propellants with performances similar to those of the Chinese propellant, despite their lower energy characteristics compared to those of the Chinese propellant, by playing on a single physical parameter independent of the composition of the propellant; the combustion surface. This in order to consider a possible substitution of the Chinese propellant by the Congolese propellant for the same rocket engine.