Experiment and Numerical Calculation on Launching Performance of Two-Stage Light Gas Gun Driven by Gas Reaction

In this paper, the launching performance of a developed 20/57 mm two-stage light gas gun was studied, of which the driving energy is supplied by the gaseous chemical reaction.The experimental results show that the relationship between the chemical energy and the kinetic energy of the projectile can be properly fitted with quadratic polynomials.The tests conducted under controlled repeatable conditions indicate good repeatability of system, thus verifying that the system satisfies the requirement of the loading experiments.In addition, we developed a ballistic model of the two-stage light gas gun driven by gas reaction, and calculated the velocities of projectiles, which are in good agreement with the experimental data.