Keywords: drawing amusement park wheel 330-PSA-134-60 (USN 1049122): Blast Cone Principle. This diagram illustrates how a small charge shock wave will expand within the confines of a cone in the same manner as it would if it were part of a full sphere of explosive. This small charge fired in the apex of smoke represents a much larger explosive charge fired in the open. Photograph released August 1, 1960. (8/25/2015). 330-PSA-134-60 (USN 1049122): Blast Cone Principle. This diagram illustrates how a small charge shock wave will expand within the confines of a cone in the same manner as it would if it were part of a full sphere of explosive. This small charge fired in the apex of smoke represents a much larger explosive charge fired in the open. Photograph released August 1, 1960. (8/25/2015). |