Initial signature of an acoustic impulse and the model of its vertical-oblique propagation in the atmosphere (on the basis of the results of the millrace explosion)

Theoretical calculations are correlated with the acoustic parachute measure ments for the Mill Race surface chemical explosion. It is shown that the Re ed impulse, modified in the rarefaction phase of the wave, presents the mos t appropriate initial signature. Empirical and theoretical expressions are obtained for the calculation of the initial parameters, signature, and prop agation characteristics of an acoustic impulse; the results of these calcul ations agree well with the experimental data.