Document Details
Title:
OPERATION GREENHOUSE, ANNEX 1.6 BLAST MEASUREMENTS; PT-3 PRESSURE NEAR GROUND LEVEL; SECT-4 BLAST ASYMMETRY FROM AERIAL PHOTOGRAPHS; SECT-5 BALL-CRUSHER-GAUGE MEASUREMENTS OF PEAK PRESSURE (DELETED)
Subject Terms:
GREENHOUSE OPERATION; BLAST EFFECTS; MEASURING METHODS; DOG-0451 EVENT; EASY-0451 EVENT; PHOTOGRAPHS; SHOCK WAVES
Document Location:
Location - DOE/NNSA 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 - NTA@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1951 Dec 31
Declassification Status:
Sanitized
Document Pages:
0059
Accession Number:
NV0051293
Document Number(s):
WT58EX
Originating Research Org.:
NAVAL ORDNANCE LABORATORY, WHITE OAK
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2003 Sep 18
Description/Abstract:
AERIAL MOTION PICTURES FROM MANNED AIRCRAFT WERE TAKEN OF THE DOG, EAS Y, AND GEORGE ATOMIC BOMB TESTS AND FROM A DRONE AIRCRAFT ON DOG SHOT TO DETERMINE WHETHER ASYMMETRIES IN THE BLAST WAVES COULD BE SO DETECT ED AND MEASURED. ONLY ONE FILM, THAT TAKEN OF DOG SHOT FROM A DRONE, WAS CONSIDERED GOOD ENOUGH TO WARRANT DETAILED ANALYSIS, BUT THIS FAIL ED TO YIELD ANY POSITIVE INFORMATION ON ASYMMETRIES. THE ANALYSIS SHO WED THAT FAILURE TO OBTAIN GOOD ARRIVAL-TIME DATA AROSE FROM A NUMBER OF CAUSES, BUT PRIMARILY FROM UNCERTAINTIES IN MAGNIFICATION AND TIMIN G. RESULTS COULD ONLY BE MATCHED WITH RELIABLE DATA FROM BLAST-VELOCI TY SWITCHES BY USE OF LARGE CORRECTIONS. ASYMMETRIES, IF PRESENT, WER E JUDGED TO HAVE BEEN TOO SMALL OR TO HAVE OCCURRED TOO EARLY TO BE DE TECTED WITH THE SLOW FRAME SPEED USED. RECOMMENDATIONS FOR BETTER RES ULTS INCLUDE LOCATING THE AIRCRAFT DIRECTLY OVERHEAD AT THE TIME OF BU RST AND USING A CAMERA HAVING GREATER FRAME SPEED AND PROVIDED WITH TI MING MARKS.