Accession Number : AD0864928

Title :   Shock Spectrum Measurements.

Descriptive Note : Final rept.,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Galbraith, Frank W.

Report Date : 09 FEB 1970

Pagination or Media Count : 84

Abstract : Ground shock spectrum measurements were made for the Prairie Flat 500-ton HE test and for the associated HEST test using mechanical reed gages. These tests were conducted at the Defence Research Establishment Suffield at Ralston, Alberta, Canada, and were sponsored by the Defense Atomic Support Agency. A total of 33 gages were used for the 500-ton test. Of these, 22 were in the free-field soil at ranges having overpressures of 840 (expected 1000), 600, and 300 psi and were oriented to measure vertical, horizontal-radial, and horizontal-transverse ground shock at the surface and at depths of 5 and 10 feet. The remaining 11 gages were in three model structures at overpressures of 600, 450, and 300 psi and were oriented vertically and horizontal-radially. The results of the 500-ton test indicated greater than expected ground shock. The model structures responded about as the free field at their mid-depths except for resonances peculiar to the structures themselves. The 500-ton free-field ground shock was somewhat greater than that from the HEST test especially in the horizontal direction. The spectra measured within the structures for the HEST and 500-ton tests were quite similar. (Author)

Descriptors :   *NUCLEAR EXPLOSIONS, SHOCK WAVES, TNT, SIMULATION, INSTRUMENTATION, PRESSURE, TERRAIN, MOTION, SURFACE BURST.

Subject Categories : Nuclear Explosions and Devices(non-military)
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE