Design, analyses, and field test of a 0.7 m conical shaped charge

This paper describes the design, analysis and field test of a 0.7 m (28 in) conical shaped charge (CSC). The shaped charge was designed and analyzed using an analytical code for preliminary analyses and parametric studies to determine an approximate design that could satisfy the program requirements as well as the geometrical and weight constraints. The goal was to design a shaped charge that could produce approximately a 25 cm (9.8 in) diameter, 6 m (19.7 ft) deep hole in rock and concrete. Preliminary results, obtained with the analytical code, were verified independently with a hydrocode. After the shaped charge was designed and analyzed, it was fabricated and field tested by firing it into Tuff rock. The shaped charge fulfilled the program requirements and the test results closely agreed with the analyses.