Evaluation Method for Migration Invalidation of Deterred Double-base Gun Propellants

doi:10.3969/j.issn.1000-1093.2022.02.007

Abstract

Abstract: The traditional aging invalidation evaluation of gun propellants is mainly for the chemical stability of propellants during storage without considering the migration of deterrent in the aspect of physical change. Based on the diffusion principle and the relationship between the deterrent distribution and the combustion performance, a migration invalidation evaluation method is established for testing the percentage increase in the maximum dynamic vivacity of deterred double-base gun propellants by closed vessel experiment. Through the closed vessel and ballistic experiment, the linear growth model of the increasing percentage of the maximum dynamic vivacity of deterred double-base gun propellants with the aging time was obtained, and the validity of the established method was verified. The variation of the stabilizer content with aging time is analyzed by gas chromatography. It is revealed that the invalidation time of deterred double-base gun propellants caused by the aging migration is earlier than that of the chemical stability. The aging invalidation evaluation of the deterred double-base gun propellants should follow the “double threshold principle” to ensure their storage safety and use safety.

Key words: double-basegunpropellant, deterrent, migrationinvalidation, evaluationmethod

CLC Number:

TQ56

LIANG Hao， DING Yajun， LI Shiying， ZHAO Xianzheng， XIAO Zhongliang. Evaluation Method for Migration Invalidation of Deterred Double-base Gun Propellants[J]. Acta Armamentarii, 2022, 43(2): 297-304.

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第43卷第2期2022 年2月
兵工学报ACTA ARMAMENTARII
Vol.43No.2Feb.2022

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[4]	HUANG Zhen-ya， FAN Jian-fang， CHEN Yu-qian. A New Deterring Technique of Azidonitramine Propellant [J]. Acta Armamentarii, 2014, 35(2): 182-187.