• Journal of the Korea Institute of Military Science and Technology
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• v.6 no.2
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• pp.65-72
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• 2003

Composite sabot can increase the penetration performance of APFSDS projectile by reduction of the sabot weight. However, it has a thick-sectioned lamination and the lamination structure is different from those of the conventional composite parts. In this study, modeling technique for a thick and radially-laminated composite part has been applied in the finite element analysis of composite sabot. Four models of composite lamination for the sabot have been proposed and evaluated for their structural strength.

• Journal of the Korea Institute of Military Science and Technology
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• v.6 no.4
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• pp.63-72
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• 2003

This paper deals with the analysis of composite sabot of APFSDS projectile. Unlike conventional composite parts, the sabot is composed of thick-sectioned lamination, and thus requires 3-dimensional properties in the analysis. In this study, a model was formulated to calculate the equivalent composites properties. The equivalent properties were then used in the finite element analysis and the results were compared with those by the full 3-dimensional analysis with ply-by-ply modeling. The results generally agreed with each other in the bound of 20% error, indicating that the formulated model produced the equivalent properties with reasonable accuracy. It was thought to be an efficient approach to use the model in global analysis and then perform the full 3-dimensional analysis in regions of interest for detailed evaluation in designing the composite sabot structure.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2003.10a
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• pp.47-50
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• 2003

JA2 Propellants, made by non-solvent process, are of great interest for the tank gun propellant. This is due to high energy. The grain geometries of JA2 and modified JA2 propellant were designed for application to 105mm APFSDS projectile. The combustion, thermochemical, and interior ballistic properties of the propellant were tested and calculated. The performances of the propellant were evaluated out using 105mm slug T2 projectiles and 105mm tank gun. The muzzle velocity of the propellants was higher than that of the KM30 for K274 projectile.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.2
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• pp.322-327
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• 2020

An Armor Piercing Fin Stabilized Discarding Sabot (APFSDS), which penetrates and sabotages the target by physical energy, consists of a general penetrator using Depleted Uranium (DU) or Tungsten Heavy Alloy (THA) but THA is preferable because of manufacturing and environmental issues. On a THA penetrator, the penetration performance is determined mainly by self-sharpening depending on the hardness and toughness of materials. In particular, the tensile strength and impact strength work as key factors. The correlation coefficient for the penetration performance of the tensile strength was 0.721 and the impact strength was -0.599. The improved penetration performance by additional heat treatment was proven experimentally. Therefore, maintaining elongation over 9 % and tensile strength over 123 kg/㎟ is desirable, and the impact strength should be less than 6.8 kg·m/㎠ for good penetration performance.