Accession Number : AD0339277

Title :   AIR BLAST AND SHOCK PHENOMENA BY PHOTOGRAPHY

Descriptive Note : Rept. for May-July 56,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Belliveau,L.J. ; Hanlon,P.

Report Date : JUL 1956

Pagination or Media Count : 46

Abstract : Project 1.3 participated in Shots Cherokee, Lacrosse, Zuni, Inca, Mohawk, and Seminole. No shockphotography data were obtained from Cherokee as the result of a bombing error. The smoke rocket technique was used during Zuni and Lacrosse and usable data were obtained. Direct-shock photography was used during Inca, Mohawk and Seminole. Only fragmentary shocks were observed on Inca and Mohawk films, and no shock was ob served in Seminole films. Shot Zuni was a ground surface burst of 3.53 = 0.18 Mt. Pressure-dis tance data were obtained over the surface (water) and above ground zero to distances of 14,000 and 13,000 ft, respectively. The surface data were compatible with the data obtained from previous operations. The pressure-distance data obtained above ground zero is not in agreement with avail able methods of predicting peak overpressures above ground zero. However, a qualitative picture can be given in terms of phenomena observed on high-explosive tests and on theoretical predic tions based on the effects of atmospheric nonhomogeneity. (Author)

Descriptors :   PHOTOGRAPHIC ANALYSIS, ROCKETS, PRESSURE, SHOCK WAVES, INSTRUMENTATION, LAUNCH, POWER SUPPLIES, TIMING DEVICES

Subject Categories : Test Facilities, Equipment and Methods
      Photography
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE