Analysis of Solutions of Intermediate Ballistics Problems

Abstract

In this paper the author examines the problems of calculation of processes specific for the period of aftereffect and of determining the effectiveness of devices that are operating during this period. Calculation techniques designed by analytic relations and numerical techniques are considered. Features are shown that should be considered when applying the solutions in quasi-stationary or non-stationary statements. The paper emphasizes that it is necessity to consider the presence of the setting phase when calculating the flow parameters; during this phase the following phenomena are observed: motion of impact waves and depression waves in the gas pipe, variation of the position of critical sections of the flow under the action of thermo-dynamic and wave processes; generation of circulation and stagnation zones; and other non-stationary gas dynamic phenomena. The pointed processes are of essential importance in generation of muzzle impact waves and shot ardour, thus determining the quality of upper barrel devices of the barrel-type guns.