Accession Number:

AD0750379

Title:

An Analysis of 5,56mm Aluminum Cartridge Case Burn-Through Phenomenon

Descriptive Note:

Corporate Author:

FRANKFORD ARSENAL PHILADELPHIA PA

Personal Author(s):

Report Date:

1972-01-01

Pagination or Media Count:

16.0

Abstract:

This work was aimed at understanding the burn-through problem that has impeded orderly engineering development and application of aluminum alloy cartridge cases in high-performance ammunition since the 1890s. It has been shown that a gas path through the wall of an aluminum case, and through which propellant gas can flow during the internal ballistic cycle, is a precursor to the burn-through phenomenon. Solutions to this problem have been found that either prevent propellent gas flow through a path in the case that develops unintentionally during firing of the ammunition, or alter the effect of propellant gas flow through such a gas path. Since an engineering understanding of the burn-through phenomenon is available, work is currently underway to demonstrate the feasibility of aluminum cartridge cases.

Subject Categories:

  • Ammunition and Explosives
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE