Experimental Study on the Thermodynamic Damage Power of Ammunition Deflagration in a Closed Explosive Device

Liangquan Wang; Fei Shang; Deren Kong

doi:10.14429/dsj.72.18323

Liangquan Wang School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu - 210 094, China https://orcid.org/0000-0001-5994-6616
Fei Shang School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu - 210 094, China https://orcid.org/0000-0002-5948-0753
Deren Kong School of Mechanical Engineering, Nanjing University of Science and Technology, Jiangsu - 210 094, China https://orcid.org/0000-0003-2564-7022

DOI: https://doi.org/10.14429/dsj.72.18323

Keywords: Closed explosives device, Propellants, Heat flow density, Thermal shock loading

Abstract

The high temperature and high pressure gas produced by propellant deburning has strong thermal effect,
which will produce strong thermal damage effect on the target. In this study, an improved closed explosive device was used to simulate the thermal shock loading of 5/7 single base propellant with a charge mass of 17.4 g, and the change law of heat flow density of propellant in the process of deflagration in a closed environment was tested. The experimental results show that the temperature rises rapidly during the deflagration of the 5/7 single-base propellant, and the maximum heat flow density can reach 17.68 MW/ m2 . The curves obtained from the three tests have good consistency in the change trend, which proves the engineering practicability of the improved closed explosive device in the study.