Analysis and Forecast of Internal Ballistic Parameters of Weapon without Recoil

Internal ballistics include the study of the combustion gases pressure. In the present paper, a numerical method is proposed to predict internal ballistic parameters such as pressure, temperature, velocity and friction force along the length of the weapon tube. The grid generation is done in the Gambit environment and after writing the appropriate code The simulation of the bullet movement inside the tube has been carried out and the behavior of the bullet inside the tube is initiated from the onset of the motion due to the combustion pressure until the bullet is available. It is famous that the ultimate goal in internal ballistic analysis is to determine the relation between speed and range. Here, the factors affecting the optimal speed achievement are fully described. Also, the movement of bullets inside the tube is shown using diagrams and contours. The most important results are about the upward and downward pressure and the temperature behind the bullet. Furthermore, the maximum temperature behind the bullet and its minimum at the tip of the bullet have occurred.