Accession Number:

ADA243045

Title:

Mechanical and Thermomechanical Properties of NC Base Propellants

Descriptive Note:

Technical rept.

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL NJ ARMAMENT ENGINEERING DIRECTORATE

Report Date:

1991-11-01

Pagination or Media Count:

27.0

Abstract:

Compressive mechanical properties have been investigated as a function of temperature and strain rate for a modified double base propellant JA2 and comparison made with similar studies for a triple-base propellant. Measurements were made at strain rates of 10 sec-1 and 10 -3 sec -1 and temperatures of 80 C to -60 C. At the higher strain rate, the double-base propellant shows ductile behavior at 20 C and brittle failure at the low temperature. However, comparison with triple-base propellants indicates that this double-base propellant. While the ductile-to-brittle transition can be related to a glass type transition temperature, the difference in fragmentation is apparently related to composition and structure. The relationship of ductile and brittle failure to abnormal burning and the related unsafe gun firing conditions is discussed.

Subject Categories:

  • Ammunition and Explosives
  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE