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Journal of Projectiles, Rockets, Missiles and Guidance >

2024 , Vol. 44 >Issue 6: 46 - 55

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.06.006

Research on the Impact of Casing Groove Structure on the Destructive Power of Solid Rocket Motors

  • XUE Haifeng 1 ,
  • CHEN Yulin 2 ,
  • GUO Zongtao 1 ,
  • XU Jinsheng 1
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  • 1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094,Jiangsu,China
  • 2 Beijing Power Machinery Research Institute, Beijing 100074, China

Received date: 2024-11-30

  Online published: 2025-02-10

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Abstract

With the enhancement of overall warhead damage as the research objective, this study addresses the issue of the poor formation effect of natural fragments generated by the detonation of solid rocket engines. Research is conducted on the grooving of the combustion chamber casing. Following the research sequence of transverse grooved cylinder-longitudinal grooved cylinder-transverse and longitudinal grooved cylinder-transverse and longitudinal grooved combustion chamber casing, the impact of different transverse, longitudinal, and combined transverse and longitudinal groove parameters on fragment formation is analyzed. Parameters suitable for the casing of large-diameter, thin-walled engine combustion chambers are obtained, and the damage power of the obtained groove parameters is analyzed. The results indicate that, under the premise of a large-diameter, thin-walled cylinder, a groove spacing greater than three times the wall thickness can form regular fragments. Although an increase in groove spacing reduces the number of fragments, the mass of individual fragments increases, resulting in a higher damage range. The parameters of groove depth and width are relatively close to those of warhead groove parameters, and the depth of the transverse groove significantly affects the generation of pre-controlled fragments. However, excessively deep grooves will exceed the safety range of the engine casing, hence the selectable range for transverse groove depth is relatively small. The conclusions of this study can provide a reference basis for the integrated design of projectile and rocket propulsion damage.

Key words： solid rocket motor; groove parameters; fragment formation; damage assessment

Cite this article

XUE Haifeng , CHEN Yulin , GUO Zongtao , XU Jinsheng . Research on the Impact of Casing Groove Structure on the Destructive Power of Solid Rocket Motors[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2024 , 44(6) : 46 -55 . DOI: 10.15892/j.cnki.djzdxb.2024.06.006

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