Document Details


Title:
OPERATION REDWING-PROJECT 5.1: THERMAL AND BLAST LOAD EFFECTS ON A B-47E AIRCRAFT IN FLIGHT (DELETED)
Author(s):
LAUMANN, R C [COOK RESEARCH LABORATORIES, COOK ELECTRIC CO, CHICAGO, IL]; GRAN, W M [COOK RESEARCH LABORATORIES, COOK ELECTRIC CO, CHICAGO, IL]; HEINEMAN, R H [COOK RESEARCH LABORATORIES, COOK ELECTRIC CO, CHICAGO, IL]; LANG, R P [COOK RESEARCH LABORATORIES, COOK ELECTRIC CO, CHICAGO, IL]
Subject Terms:
REDWING PROJECT; THERMAL RADIATION; RADIATION EFFECTS; AIRCRAFT; RESEARCH PROGRAMS; MEASURING METHODS; ZUNI EVENT; DAKOTA 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:
Declassification Status:
Sanitized
Document Pages:
0072
Accession Number:
NV0051066
Document Number(s):
WT1327EX
Originating Research Org.:
COOK RESEARCH LABORATORIES, COOK ELECTRIC CO, CHIC
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
PROJECT 5.1 WAS ESTABLISHED TO MEASURE OVERPRESSURE, GUST, AND THERMAL EFFECTS ON A B-47E AIRCRAFT IN FLIGHT AND TO PROVIDE ADDITIONAL RESEA RCH INFORMATION ON THE EFFECTS OF NUCLEAR EXPLOSIONS ON THE AIRCRAFT. RESULTS OF THIS PROJECT WILL BE USED TO CORRECT THE B-47E WEAPONS DEL IVERY HANDBOOK. PREVIOUS TESTS WERE CONDUCTED ON A B-47E IN OPERATION S IVY AND CASTLE. DATA OBTAINED ON THESE OPERATIONS WERE PRIMARILY ME ASUREMENTS OF THERMAL EFFECTS. FOR OPERATION REDWING, A B-47E AIRCRAF T WAS INSTRUMENTED FOR MEASUREMENT OF OVERPRESSURES, IRRADIANCE, RADIA NT EXPOSURE, AND OF BENDING, SHEAR, AND TORSION IN THE WING AND STABIL IZER. FURTHER INSTRUMENTATION WAS MADE TO MEASURE THERMAL STRAIN AND THE EFFECT OF HIGH THERMAL INPUTS ON THIN SKINS AND SUPPORTING STRUCTU RES. INSTRUMENTATION WAS ALSO INSTALLED TO OBTAIN BENDING, SHEAR AND TORISON RESPONSES OF THE FUSELAGE WHEN SUBJECTED TO COMBINED SIDE AND VERTICLE LOADING. THE GENERAL POSITIONING CRITERIA FOR THE AIRCRAFT W ERE WING BENDING UP TO 95 PERCENT OF DESIGN LIMIT AND/OR A TEMPERATURE RISE OF 600 TO + 700 F IN THE THIN-SKINNED ELEVATOR AND AILERON. IN ORDER TO ATTAIN HIGH TEMPERATURE RISES ON PARTICIPATIONS IN WHICH THE AIRCRAFT WAS GUST CRITICAL, IT WAS NECESSARY TO PAINT THE THIN-SKIN SU RFACES WITH HIGH ABSORPTIVITY PAINT. TEMPERATURES OF [ ] RECEI VED DURING SHOTS ZUNI AND DAKOTA CAUSED ONLY MINOR PERMANENT BUCKLING IN THE AILERON AND ELEVATOR AND RESULTED IN NO CONTROL PROBLEMS OR NOT ICEABLE INCREASE IN DRAG. DURING SHOT DAKOTA, THE AIRCRAFT SUSTAINED 89 PERCENT OF DESIGN LIMIT WING BENDING AND AN OVERPRESSURE OF [ ]. ON OTHER PARTICIPATIONS, WING LOADING RANGED FROM 46 TO 75 PERCENT O F DESIGN LIMIT, AND NO DAMAGE RESULTED. THE DATA OBTAINED BY PARTICIP ATION OF THE B-47E AIRCRAFT IN OPERATION REDWING ARE SUFFICIENT FOR CO RRECTION OF THE EXISTING B-47E WEAPONS DELIVERY HANDBOOK. THE DATA SH OULD ALSO BE USEFUL AS BASIC RESEARCH INFORMATION TO AID IN DESIGN OF FUTURE USAF AIRCRAFT.


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