An interface to provide the physical properties of the blast waves from surface-burst TNT explosions

An Excel\(\copyright \) interface has been developed to provide the physical properties of blast waves produced by surface-burst TNT explosions. The format is identical to that of a previous interface that provides the properties of blast waves from free-field TNT explosions. These interfaces have been developed to replace the information previously provided by a program named \(\text {AirBlast}^{\circledR }\), which is no longer compatible with modern operating systems. Excel\(\copyright \) has been chosen as the platform for the new interfaces because it is widely available, and experience has shown that its files have remained compatible with all operating systems as they have been upgraded. The TNT surface-burst interface has been developed using the same database of experimental measurements as \(\text {AirBlast}^\circledR \), which was gathered from an analysis of the blast waves from over 300 explosions, ranging in size from 4 kg to 500 t. The availability of the data from the free-field and the surface-burst interfaces has permitted a comparison between the two types of blast waves, and in particular the confirmation of previous measures of the reflection factor for surface-burst explosions.