Accession Number:

ADA229127

Title:

Computational Fluid Dynamics Application to the Aerodynamics of Symmetric Sabot Discard

Descriptive Note:

Final technical rept. Sep 1989-Sep 1990,

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1990-10-01

Pagination or Media Count:

52.0

Abstract:

Computational fluid dynamics 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 which involves strong aerodynamic interference between the projectiles and discarding sabot components has been investigated. The complex system of shock boundary-layer interactions between the projectile and sabot, during the discard sequence, has been numerically simulated. Three sabot components were located symmetrically at various positions near a cone-cylinder projectile. Computed and measure surface pressures for the projectile and sabot compare favorably for Mach number 4.5 and Reynolds number six million. Solutions for a flight Reynolds number of 89 million have been obtained as well. Computational solutions indicate the importance of three-dimensional, multi-body simulations and boundary layer modeling. EDC

Subject Categories:

  • Ammunition and Explosives
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE