Penetration and Cutting Effects of Lead-Sheathed Flexible Linear Shaped Charges and Explosive-Filled Linear Shaped-Charge Containers (Mark 7 Mods 1 through 8 and Mark 8 Mod 2)

摘要

The Naval Explosive Ordnance Disposal Facility conducted tests to determine the cutting and penetration effects of 20-,30-,40-,60-,75-,125-,225-,300-,400-,500-, and 600-grain-per-foot lead-sheathed flexible linear shaped charges (FLSC's) filled with CH-6 explosive, for use as a general-purpose tool by joint-service explosive ordnance disposal personnel. Tests were conducted on 25-millimeter-thick (1-inch-thick) aluminum (2024-T4), 51-millimeter-thick (2-inch-thick) aluminum (2024-T351), and 25- and 51-millimeter (1- and 2-inch-thick) mild steel (1018) witness plates, both with and without standoff material. In addition to the FLSC tests, tests were conducted on the same type of witness plates using Mk 8 Mod 2 and Mk 7 Mods 1 through 8 linear shaped-charge containers, hand packed with composition C-4 explosive, to document and compare their cutting and penetration effects with those of the FLSC's. The results of the tests indicate the flexible linear shaped charges filled with CH-6 explosive are superior to comparable Mk 7 linear shaped charges due to their wider range in sizes. Also, the Mk 7 linear shaped-charge containers suffer from problems encountered in hand packing explosive in cold weather; inconsistency between individual packers; and rigid construction, which causes problems in placement on curved or bent surfaces. (Author)