Accession Number:

AD0632529

Title:

UNDERWATER SHOCK WAVE FREQUENCY SPECTRUM ANALYSIS. V. SPECTRA OF REFRACTED PULSES COMPARED WITH ISOVELOCITY SHOCK WAVES,

Descriptive Note:

Corporate Author:

NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s):

Report Date:

1966-03-17

Pagination or Media Count:

24.0

Abstract:

Fourier integral spectra of refracted shock waves from 56-lb TNT explosions fired at 50-ft depth were digitally computed on the IBM-7090. Comparisons were made between the spectra of various refracted pulses and the spectrum of the shock wave expected in isovelocity water at the same distance. Pulses received in the shadow zone, at the caustic, and in the region of multiple arrivals of the ray pattern were analyzed. The maximum spectral density level increases as the impulse increases spectral oscillations are a function of surface cut-off times and of the difference in arrival times of the multiple peaks. Author

Subject Categories:

  • Explosions
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE