Effect of induced waves in the reservoir on piston acceleration in a single-stage gas gun
Authors: Bykov N.V.
Published in issue: #8(92)/2019
DOI: 10.18698/2308-6033-2019-8-1908
Category: Mechanics | Chapter: Mechanics of Liquid, Gas, and Plasma
The purpose of the paper was to study the effect of induced gas perturbations in the reservoir on the ballistic characteristics of single-stage gas guns. Two ways of waves generation at the initial moment are considered: by means of a non-uniform initial distribution of gas parameters and by creating a shock wave propagating from the bottom of the reservoir by external forces. The study is based on the numerical solution of one-dimensional gas-dynamic equations on a moving grid. Findings of research show that for relatively large (compared to the accelerating gas mass) mass of the projectiles, the wave processes induced by inhomogeneous filling lead to an increase in the muzzle velocity 1.4 times, and the shock waves generation by an external source — 1.8 times.
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