Document Details


Title:
OPERATION SUN BEAM, SHOT SMALL BOY, PROJECT OFFICERS REPORT - PROJECT 1.4 - SHOCK PHOTOGRAPHY (DELETED)
Author(s):
HANLON, P [UNITED STATES NAVAL ORDNANCE TEST STATION]; DIETER, C F [UNITED STATES NAVAL ORDNANCE TEST STATION]
Subject Terms:
PHOTOGRAPHS; SHOCK WAVES; NUCLEAR EXPLOSIONS; SMALL BOY EVENT; DOMINIC II OPERATION; TIME OF ARRIVAL; CALCULATION METHODS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1963 May 17
Declassification Status:
Sanitized
Document Pages:
0032
Accession Number:
NV0051002
Document Number(s):
POR2203EX
Originating Research Org.:
UNITED STATES NAVAL ORDNANCE TEST STATION
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE OBJECTIVE WAS TO OBTAIN SHOCK-ARRIVAL TIME FROM WHICH THE SHOCK VE LOCITIES AND PRESSURES LIMITED TO REGIONS OF KNOWN AMBIENT CONDITIONS COULD BE DERIVED, AND POSSIBLE ASYMETRIES DETECTED. THE OBJECTIVES WER E MET, BUT THE EXTENT OF MEASUREMENTS WERE LIMITED TO 700 FEET ALONG T HE SURFACE AND 385 FEET ABOVE ZERO POINT. IN FILMS OBTAINED FROM TWO P HOTOGRAPHIC STATIONS, SEPARATED BY APPROXIMATELY 68 DEGRESS, IT WAS AP PARENT THAT THE GROWTH OF THE FIREBALL ALONG THE SURFACE WAS ASYMETRIC . THE RATE OF GROWTH ALONG THE SURFACE WAS GREATER THAN THAT ALONG THE VERTICAL. PEAK SHOCK OVERPRESSURES WERE CALCULATED FROM THE VELOCITY DATA. THE SURFACE PRESSURE CALCULATIONS WERE IN AGREEMENT WITH THE AVE RAGED SURFACE MEASUREMENTS MADE BY PROJECT 1.1 (REFERENCE 6). THE AGRE EMENT, HOWEVER, WAS CONSIDERED TO BE FORTUITOUS BECAUSE OF THE UNKNOWN AMBIENT CONDITIONS NEAR THE SURFACE AND THE SCATTER OF THE ARRIVAL TI ME DATA. CONTRARY TO PAST EXPERIENCE, PRESSURES MEASURED ALONG THE SUR FACE WERE HIGHER THAN THOSE CALCULATED (VERTICALLY) ABOVE ZERO POINT A T THE SAME DISTANCES. PRESSURE-DISTANCE CALCULATIONS, BOTH VERTICAL AN D SURFACE, SCALED TO AT SEA-LEVEL AMBIENT CONDITIONS WERE IN AGREEMENT WITH THE COMPOSITE SURFACE BURST PRESSURE-DISTANCE CURVE (REFERENCES 7 AND 8).


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