Accession Number:

AD0742825

Title:

Spectral Level of Explosive Charges Fired Very Near the Surface.

Descriptive Note:

Technical rept.,

Corporate Author:

WOODS HOLE OCEANOGRAPHIC INSTITUTION MASS

Personal Author(s):

Report Date:

1972-05-01

Pagination or Media Count:

29.0

Abstract:

The spectral levels of 85 one-half pound blocks of TNT fired at the shallow depth of 18 inch have been determined in 26 contiguoug one-third octave bands extending from 112 Hz to 35.4 kHz. Measurements were made in sea states varying from 0 to 5. Mean levels, standard deviations and standard deviations of the mean are given. The spectra deviate markedly from the expected spectra of a shock pulse alone. A theoretical model incorporating a direct signal and a surface reflection truncated by cavitation, gives a reasonable fit to the experimental curves particularly after cavitation pressure is adjusted as a parameter to improve the match. Author

Subject Categories:

  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE