Research on the Influence of Magnesium Combustible Liner on Dynamic Deformation and Combustion Stability ofComposite Base Bleed Propellant Grain

doi:10.3969/j.issn.1000-1093.2015.02.007

Abstract

Abstract: To solve the problems of that composite base bleed propellant grain (CBBPG) is crushed and unstably combusts during launching, a protection strategy is proposed by directly installing a magnesium combustible liner (MCL) with temporary strength protection and auxiliary combustion in the inner hole of CBBPG. The FEM analysis model of CBBPG’s launching process in extreme working conditions is established by using ABAQUS, and the dynamic shooting contrast verification test is done. The simulation results show that MCL can effectively prevent CBBPG from excessively deforming during launching. At the same time, the test results show that the average velocity of the projectiles with MCL is increased by 4.97 m/s, and the combustion consistency and combustion stability of CBBPG are both improved.

Key words: ordnance science and technology, extended range technique with base bleed, base bleed propellant grain, dynamic deformation, structure integrity, combustion stability, magnesium combustible liner

CLC Number:

TJ413.5

NIU Gong-jie, QIAN Jian-ping, QIAN Li-xin, WU Zhi-hui, CAO Cheng-zhuang, LI Ding-peng. Research on the Influence of Magnesium Combustible Liner on Dynamic Deformation and Combustion Stability ofComposite Base Bleed Propellant Grain[J]. Acta Armamentarii, 2015, 36(2): 234-241.

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