Design Principle and Realizable Approach of Nitro Gradiently Distributed Propellant

doi:10.3969/j.issn.1000-1093.2020.11.006

Abstract

Abstract: The concept of nitro gradiently distributed propellant was proposed for the high energy release progressivity of gun propellant, and the basic principle of energy release progressivity of nitro gradiently distributed propellant was demonstrated based on the internal ballistics.The nitro gradiently distributed propellant has higher oxygen balance than traditional deterred propellants have, and has the characteristics of low smoke and low residue. Based on the minimum free energy algorithm, the combustible components content (CO, H₂) in the combusion product of nitro gradiently distributed propellant and deterred propellants (dibutyl phthalate, camphor and DNT) were calculated and compared. The results show that the content of combustible components of nitro gradiently distributed propellant was the lowest. The preparation process of nitro gradiently distributed propellant is described, the microstructure of nitro gradiently distributed propellant is characterized by SEM-EDS and Raman, the good energy release progressivity of nitro gradiently distributed propellants were confirmed by closed bomb test. The nitro gradiently distributed propellant is a new type of gun propellant, which is different from existing propellants. It is expected to eliminate or reduce the bad phenomena of traditional deterred and coated propellants, such as smoke, flame, residue, storage stability, etc.

Key words: nitrogradientlydistributedpropellant, gradientdenitrification, energyreleaseprogressivity, lowsmoke,flameandresidue

CLC Number:

LI Shiying, DING Yajun, LIANG Hao, ZHAO Xianzheng, XIAO Zhongliang, LI Chunzhi, HE Yun. Design Principle and Realizable Approach of Nitro Gradiently Distributed Propellant[J]. Acta Armamentarii, 2020, 41(11): 2198-2205.

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