Investigation of the Ways of Increasing the Shooting Range of the Barrel Artillery

Abstract

The main methods of increasing the shooting range from artillery are analyzed. The investigations were carried out on the basis of the developed method for calculating the trajectory of the projectile. The aerodynamic coefficients of the forces and moments acting on the projectile were determined by numerical modeling of the flow around the projectile. An approach is applied based on the numerical solution of the Favre averaged Navier-Stokes equations using the k-ε model turbulence with compressibility effects. The problem of optimizing the drag coefficient of a high-explosive fragmentation projectile from the main geometric dimensions is formulated. Parametric studies of the dependence of the drag coefficient of the projectile on its geometric dimensions were carried out. The dependence of the shooting range from the ballistic conditions: projectile mass, initial velocity, shooting angle was investigated. The optimum combination of projectile mass and initial velocity is determined taking into account the solution of the internal ballistics problem. A method for increasing the shooting range due to the use of a jet engine in the design of an artillery projectile is considered. The dependence of the shooting range on the time of starting the jet engine is investigated. The shooting angles are determined, which provide the maximum shooting range.