Document Details


Title:
SCIENTIFIC DIRECTOR'S REPORT OF ATOMIC WEAPON TESTS AT ENIWETOK, 1948 ( OPERATION SANDSTONE JTF7 BLAST MEASUREMENT SECTION, LAJ-8 )
Subject Terms:
SANDSTONE OPERATION; BLAST EFFECTS; CALCULATION METHODS; GRAPHS; X-RAY EVENT; YOKE EVENT; ZEBRA EVENT; SHOCK WAVES; PHYSICAL PROPERTIES
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:
1948 Jun 16
Declassification Status:
Declassified
Document Pages:
0212
Accession Number:
NV0051105
Originating Research Org.:
JTF7
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
PART I, CHAPTER 1: THIS REPORT SUMMARIES ALL ACTIVITIES OF THE BLAST M EASUREMENTS SECTION OF TASK GROUP 7.1, OPERATION SANDSTONE. TWENTY-TWO ( 22 ) REPORTS IN ALL HAVE BEEN PREPARED AND THEIR TITLES ARE LISTED IN TABLE I OF THE CHOICE OF INSTRUMENTS WHICH WAS MADE AT THE BEGINNIN G OF THE OPERATION. THERE FOLLOWS A DESCRIPTION OF THE ACTUAL LOCATION S OF INSTRUMENTS. THE REMAINDER OF THE REPORT IS DEVOTED TO VARIOUS TH EORETICAL WHICH HAVE CRISEN IN CONNECTION WITH THE WORK. THE STANDARD COMPARISON CURVE FOR PRESSURE VERSUS REDUCED; SOME NEW RESULTS ON THE POSITIVE PRESSURE-TIME CURVE FOR A SPHERICAL BLAST WAVE, THE POSITIVE DURATION, AND THE IMPULSE TIME AND IMPULSE-DISTANCE VARIATIONS FOR SPH ERICAL BLAST WAVES ARE PRESENTED. ENERGY TRANSPORT IN THE BLAST WAVE I S DISCUSSED. APPLICATIONS OF THESE RESULTS TOGETHER WITH THE DATA OBTA INED ARE SHOWN IN PART I, CHAPTER 2. PART I, CHAPTER 2: IN THIS REPORT ALL RESULTS OBTAINED BY THE BLAST MEASUREMENT SECTION ARE PRESENTED A ND DISCUSSED. ALL DATA ARE SUMMARIZED IN TABLES 7, 8, AND 9 FOR SHOTS X-RAY, YOKE, AND ZEBRA RESPECTIVELY. THE FOLLOWING QUANTITIES PERTAINI NG TO BLAST WAVES ARE PRESENTED: PEAK PRESSURE, POSITIVE IMPULSE, DURA TION OF THE POSITIVE PHASE, MAXIMUM NEGATIVE PRESSURE, NEGATIVE IMPULS E, AND DURATION OF THE NEGATIVE PHASE, AS WELL AS THE TOTAL TRAVEL TIM E OF THE SHOCK FRONT AND THE DETAILS OF THE SHAPE OF THE PRESSURE-TIME CURVE. A FIT OF THE PRESSURE-TIME CURVE IS SHOWN FROM WHICH THE ENERG Y IN SPECIFIC BLAST WAVES IS CALCULATED. A DISCUSSION OF EXPECTED AND ACTUAL BLAST TONNAGE IS GIVEN, AND POSSIBLE IMPROVEMENTS IN INSTRUMENT S ARE MENTIONED. THE BLAST TONNAGES ASSIGNED TO THE SHOTS X-RAY, YOKE, AND ZEBRA ARE 19 - 23, 32, AND 12 KILOTONS OF TNT RESPECTIVELY. PART I, CHAPTER 3: THE BLAST MEASUREMENTS SECTION OF OPERATION SANDSTONE, C OMPRISING 25 CIVILIAN SCIENTISTS FROM THE NOL, BRL, DTMB, AND CAL, AND 13 AFSWP PERSONNEL, WAS ESTABLISHED IN THE FALL OF 1947 TO MEASURE TH E CHARACTERISTICS OF THE AIR BLAST OF EACH OF THREE ATOMIC BOMBS TESTE D AT ENIWETOK ATOLL THE FOLLOWING SPRING. THE ACTIVE PERIOD OF PREPARA TION FOR THE FIELD TRIP LASTED ABOUT THREE MONTHS, AND THE SECTION WAS IN THE FIELD FOR NEARLY FOUR MONTHS. THE TOTAL COST, EXCLUSIVE OF AFS WP SALARIES AND AEC-FURNISHED FACILITIES, WAS ABOUT $450,000. PRESSURE -TIME AND PRESSURE-DISTANCE DATA WERE OBTAINED FROM OVER SEVEN TYPES O F INSTRUMENTS LOCATED AT MORE THAN 12 STATIONS ON EACH SHOT. STATION D ISTANCES VARIED FROM 220 TO 2920 YARDS FROM THE BLAST. ADMINISTRATIVE AND GENERAL PROBLEMS ENCOUNTERED BY THIS SECTION ARE DESCRIBED AND IMP ROVED ADMINISTRATIVE PROCEDURES ARE RECOMMENDED, INCLUDING AN INCREASE D INDEPENDENCE OF OPERATION AND A REPLACEMENT OF MOST OF THE AFSWP SER


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