Accession Number:

ADA270651

Title:

Numerical Simulation of Sabot Discard Aerodynamics

Descriptive Note:

Final rept. Jan-Dec 92,

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1993-09-01

Pagination or Media Count:

49.0

Abstract:

Computational fluid dynamics CFD solutions of the three-dimensional Navier-Stokes equations have been applied to sabot discard aerodynamics for gun- launched, saboted, armor-piercing projectiles. The portion of the launch cycle that involves strong aerodynamic interference between the projectile and discarding sabot carrier components has been investigated. Three sabot components were location symmetrically at various positions near the projectile and at angle of attack. The complex system of shockboundary-layer interactions between multiple bodies projectile and sabots, during the discard sequence, has been numerically simulated. Computed and measured surface pressures compare favorably for Mach number 4.5 and Reynolds number six million per meter. Comparison of symmetric sabot discard trajectories predicted using CFD and the AVCO sabot design code are shown.

Subject Categories:

  • Ammunition and Explosives
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE