Document Details


Title:
OPERATION SUN BEAM, SHOT LITTLE FELLER II, PROJECT OFFICERS REPORT - PROJECT 1.5, DEBRIS THROWOUT (DELETED)
Author(s):
KRUCHKO, G L [UNITED STATES ARMY ENGINEER RESEARCH AND DEVELOPMENT LABORATORY]
Subject Terms:
DOMINIC II OPERATION; SUNBEAM PROJECT; BLAST EFFECTS; SURFACE EXPLOSIONS; WEAPONS EFFECTS TESTS; LITTLE FELLER II EVENT
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:
1965 Apr 15
Declassification Status:
Sanitized
Document Pages:
0055
Accession Number:
NV0051364
Document Number(s):
POR2262EX
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
TO ASSESS THE SIGNIFICANCE OF SURFACE MISSILES AS A CASUALTY PRODUCING SOURCE FROM VERY LOW-YIELD, NEAR-SURFACE, NUCLEAR BURSTS WAS THE PRIM ARY OBJECTIVE OF THIS EXPERIMENT. TEST OBJECTS WHICH CONSISTED OF CYLI NDERS, CUBES, PLATES, AND VARIOUS BUILDING MATERIALS WERE PLACED IN A PATTERN AROUND GROUND ZERO AND, BY LOCATING THESE OBJECTS AND DETERMIN ING REACTIONS AND DISPLACEMENTS, THE SIGNIFICANCE OF THIS HAZARD WAS E VALUATED. THIS WAS THE FIRST EXPERIMENT OF THIS TYPE TO INVESTIGATE SO LELY BLAST-DRIVEN SURFACE DEBRIS. RESULTS SHOWED THAT TWENTY PERCENT O F THE TEST OBJECTS WERE DISPLACED A DISTANCE OF 300 FEET OR MORE FROM GROUND ZERO. THE MAXIMUM DISPLACEMENT WAS 711 FEET. IN ADDITION TO THE OBJECTS, TREE BRANCHES WERE PLACED AT VARYING HEIGHTS ABOVE THE GROUN D SURFACE AND AT VARYING DISTANCES OUT TO 200 FEET FROM GROUND ZERO. L ARGE POLES WERE USED TO HOLD THE BRANCHES PERPENDICULAR TO RADIAL LINE S EXTENDING OUT FROM GROUND ZERO. THE MAXIMUM BRANCH DISPLACEMENT WAS 420 FEET FROM GROUND ZERO, AND TWENTY PERCENT OF ALL BRANCHES WERE DIS PLACED OVER 260 FEET FROM GROUND ZERO. SINCE THIS WAS A FIRST-TIME EXP ERIMENT FOR THIS TYPE OF DEBRIS HAZARD, CONCLUSIONS HAD TO BE SOMEWHAT PRESUMPTIVE. HOWEVER, IT WAS ESTABLISHED THAT THE DEBRIS HAS NO CONSI STENT PATTERN OF DIRECTIONAL DISPERSION, THAT EFFECTIVE DISTANCE AT WH ICH MISSILES WOULD PRODUCE A SERIOUS HAZARD TO FIELD PERSONNEL IS LESS THAN 350 FEET FROM GZ, AND SMALL OBJECTS ON THE SURFACE OF THE GROUND 150 FEET OR MORE FROM A BURST OF THIS TYPE SHOULD NOT POSE A SERIOUS MISSILE HAZARD. THERE IS EVIDENCE THAT MISSILE HAZARD DID NOT CONSTITU TE THE GOVERNING CASUALTY-PRODUCING FACTOR FOR THIS TYPE OF BURST. IN ADDITION, IT WAS CONCLUDED THAT TREE BRANCHES WOULD PILE UP, TENDING T O FORM A BARRIER AT SOME UNDETERMINED DISTANCE FROM GROUND ZERO, PROJE CTED AREA APPEARS TO BE THE CONTROLLING FACTOR IN ESTABLISHING CRITERI A FOR MISSILE PRODUCTION, AND THAT ADDITIONAL STUDIES AND EXPERIMENTS ARE REQUIRED TO MORE THOROUGHLY UNDERSTAND THE BEHAVIOR OF MISSILES CR EATED BY VERY LOW YIELD NUCLEAR BURSTS.


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