Abstract
Possibility of Reducing the Overpressure of Shock Wave of Powder Gases around the Mortar
Highlights
The need for the increase of the maximum range, which is mostly achieved by better aerodynamic characteristics of the missile and by the construction changes at the weapon, requires the use of greater, more powerful powder charges
This paper resulted from the research of the overpressure of the shock wave of the powder gases, which occurs during firing of the mortar
The paper analyzes the impact of this solution to reduce the overpressure intensity at the crew position.Computation results of the overpressure of the powder gases, which were obtained by the realization of numerical calculation, based on the application of the finite volume method, were confirmed by the experimental results, achieved in the firing experiments
Summary
The need for the increase of the maximum range, which is mostly achieved by better aerodynamic characteristics of the missile and by the construction changes at the weapon, requires the use of greater, more powerful powder charges. As a consequence there is the occurrence of the greater overpressure around the weapon and the greater number of the shockwaves during the interval of firing action, which is emphasized at the mortar, where the firing operator (gunner) is in the vicinity of the barrel during the procedure of loading and firing of the weapon [1]. These loads are emphasized in the regime of a fast and rapid rate of fire. This paper describes a solution to reduce the level of overpressure that is similar to the blast diffuser attenuator which is applied to the M252 81mm Mortar [5]
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