Evolutionary method for combined ballistic launchers structural and parametric optimization

This paper performs a theoretical and experimental study of the effect of increasing the velocity of projectiles during the high-speed extrusion of the polyethylene piston through a tapered section (also called a “hydrodynamic” effect). Mathematical modeling is performed using two methods. The first method is a quasi-one-dimensional description of the polyethylene piston deformation on a moving computational grid. The second method is axisymmetric modeling using the ANSYS AUTODYN package. In the experimental studies, the polyethylene piston was preaccelerated using a propellant charge, after which the escape velocity of the projectile was measured. The escape velocity of the projectile after the tapered section increased up to 50% compared to the input velocity. The experimental results are consistent with the theoretical calculations.

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Evolutionary method for combined ballistic launchers structural and parametric optimization

Cited by 3 publications

References 14 publications

Low-density polyethylene extreme deformation in laboratory ballistic launchers

Low-density polyethylene extreme deformation in laboratory ballistic launchers

An approximate determination of the characteristic velocity losses and the positioning of the end of the launching phase of the first stages of launch vehicles

Theoretical and experimental study of the “hydrodynamic” effect in laboratory ballistic launchers

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