An investigation into the effect of propellant granule geometry on interior ballistics of guns

In this study, the description of interior ballistics of guns is given. The interior ballistics mathematical model is developed for calculation. During the mathematical model development process geometrical properties of propellant are used as the form function. 40 mm gun firing experimental results which got from literature are used in the model verification process. The code solved with the parameters described in the experimental study. Results of the mathematical modal are compared with the experimental results. The comparison showed that the standard deviation between experimental and numerical results was less than 4%. Therefore the modal were verified. After verification process cylindrical, single perforated cylindrical, multi perforated cylindrical and spherical granule types are inspected with the modal. Effect of the granule geometries has shown in this study.