Numerical Simulation of Sabot Discard Aerodynamics

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 shock/boundary-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.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA270651

Entities

People

  • Michael J. Nusca

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamics
  • Ammunition
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Equations Of Motion
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Mechanical Properties
  • Military Research
  • Navier Stokes Equations
  • Physics Laboratories
  • Projectiles
  • Reynolds Number
  • Specific Heat
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • ballistics.