rheinmetall denel munition rf (pty) ltd · test vehicle: qualified 81mm xm1134 ihe mortar bomb....
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RHEINMETALL DENEL MUNITION RF (PTY) LTD IM and Fragmentation Assessment of 81 mm Mortar Bombs Filled with Insensitive Melt-Cast Explosive Formulations Jackie Sibeko*, Christo du Toit and Deon van Zyl
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Overview
Introduction Melt-cast Filling Facility IM Characterisation Assessment
FH SH BI FI SR SCJI
Fragmentation Assessment
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Introduction
Test Vehicle: Qualified 81mm XM1134 IHE mortar bomb. Compatible with L16 mortar systems. Melt-cast Explosive formulations: Ontalite 50/50 GUNTOL MCX-6002
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Melt-Cast Filling Facility
Existing and Mature Filling Process for TNT.
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IM Characterisation Assessment
Fast Heating Tests (Fuel fire) Tested item bare (without logistical packaging).
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IM Characterisation Assessment
Fast Heating Results Reaction Type V (Burning)
Ontalite 50/50 GUNTOL MCX-6002
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IM Characterisation Assessment
Slow Heating Tests
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IM Characterisation Assessment
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Slow Heating Results Reaction Type V (Burning)
Ontalite 50/50 GUNTOL MCX-6002
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IM Characterisation Assessment
Bullet Impact Tests (small arms attack) 12.7 mm AP Round Bullet Velocity 850±20 m/s Browning Machine Gun
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IM Characterisation Assessment
Bullet Impact Results Reaction Type IV (Deflagration)
Ontalite 50/50 GUNTOL MCX-6002
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IM Characterisation Assessment
Fragment Impact Fragment imbedded in a sabot. Conical shaped 18.6 g, 14.3 mm diameter, 15.56 mm
total length, 20° tip angle. Velocity = 1830±60 m/s.
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IM Characterisation Assessment
Fragment Impact Results Reaction Type IV (Deflagration)
Ontalite 50/50 GUNTOL
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IM Characterisation Assessment
Sympathetic Reaction Test Donors coloured brightly & Differently. Inert bombs coloured blue, included for reference purposes. Sceptre Logistical Packaging – six-pack container.
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IM Characterisation Assessment
Sympathetic Reaction Results Reaction Type IV
Ontalite 50/50 GUNTOL MCX-6002
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IM Characterisation Assessment
Shaped Charge Jet Impact 57mm SC Quantification of Sensitivity –Determine Reaction Threshold. Varying a V2d until reaction III was obtained.
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IM Characterisation Assessment
Shaped Charge Results
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IM Characterisation Assessment
IM Signature
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Note: 81 mm RXHT 80 fuzed mortar bombs were tested in their (sceptre) logistical packaging, except for SCJI. * V2d = 74.6 mm3/µs2, ** V2d = 100 mm3/µs2 and *** V2d = 121.31 mm3/µs2
**** V2d = 88 mm3/µs2
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Fragmentation Assessment
Configuration & Test Layout
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High Speed Video – Inside shelter Velocity plate: Aluminium @ 1.5m Penetration Plates: Thickness 1.6, 3 & 5 mm Mirror – Flash time 0
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Fragmentation Assessment
Fragment average velocities
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Fragmentation Assessment
Cumulative Number Distribution
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Fragmentation Assessment
Lethality Prediction (Sperrazza Model)
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Conclusion
Lethality performance of IM melt-cast explosives variants studied compared well with TNT reference.
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Thank You.
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