Document Details


Title:
OPERATION REDWING - PROJECT 5.2, IN-FLIGHT PARTICIPATION OF A B-52 (DELETED)
Author(s):
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:
1959 Oct 23
Declassification Status:
Sanitized
Document Pages:
0074
Accession Number:
NV0051363
Document Number(s):
WT1328EX
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE PRIMARY OBJECTIVE OF PROJECT 5.2 IN OPERATION REDWING WAS TO OBTAI N MEASURED-ENERGY INPUT AND AIRCRAFT-RESPONSE DATA ON AN INSTRUMENTED B-52 AIRCRAFT WHEN SUBJECTED TO THE THERMAL, BLAST, AND GUST EFFECTS O F A NUCLEAR EXPLOSION. TO ACCOMPLISH THIS OBJECTIVE AN ANALYSIS WAS PE RFORMED TO DETERMINE THE EFFECTS OF NUCLEAR EXPLOSIONS ON THE B-52 AIR CRAFT. THIS ANALYSIS WAS USED IN SELECTING THE SPATIAL LOCATION FOR TH E B-52, RELATIVE TO A DETONATION, THAT WOULD RESULT IN THE DESIRED AIR CRAFT INPUTS AND RESPONSES. IN ADDITION, THE ANALYSIS WAS USED IN DETE RMINING THE DESIRED LOCATIONS FOR THE SENSING COMPONENTS OF THE INSTRU MENTATION SYSTEM. THE B-52 (AF 52-004) WAS EXTENSIVELY INSTRUMENTED FO R PARTICIPATION IN OPERATION REDWING WITH THE MAJOR PORTION OF THE INS TRUMENTATION DEVOTED TO MEASURING AIRCRAFT RESPONSES. THE ACTUAL POSIT IONING OF THE B-52 RELATIVE TO THE DETONATION WAS ACCOMPLISHED BY USE OF THE AIRCRAFT BOMBING NAVIGATION SYSTEM (BNS). THE B-52 PARTICIPATED IN NINE SHOTS, INCLUDING ONE SHOT WHICH THE AIRCRAFT ABORTED JUST PRI OR TO TIME ZERO BECAUSE OF BNS DIFFICULTIES. THE RELIABILITY OF THE IN STRUMENTATION SYSTEM WAS BETWEEN 95 PERCENT AND 100 PERCENT THROUGHOUT THE TEST PROGRAM. THE AIRCRAFT RECEIVED UP TO 110 PERCENT OF THE ALLO WABLE LIMIT OVERPRESSURE, 100 PERCENT OF THE ALLOWABLE LIMIT MOMENT ON THE HORIZONTAL STABILIZER, AND 82 PERCENT OF THE ALLOWABLE BENDING MO MENT OF THE WING. EXCEPT ON SHOT HURON, AIRCRAFT DAMAGE WAS CONFINED T O THERMAL DAMAGE ON SECONDARY ITEMS SUCH AS SEALS, PAINT ON THIN SKIN, AND RAIN-EROSION COATING ON THE MAJORITY OF THE EXPOSED PLASTIC SURFA CES. DURING SHOTS HURON AND TEWA THE SPECIAL SHORING FOR BOTH THE ELEC TRONIC-COUNTER-MEASURES (ECM) RADOME AND BOMB-BAY DOORS WAS REMOVED TO VERIFY THAT DAMAGE TO THESE ITEMS WOULD OCCUR IN THE NORMAL-MISSION C ONFIGURATION OF THE AIRCRAFT. PRIOR TO SHOTS HURON AND TEWA THE ECM RA DOME AND BOMB-BAY DOORS WERE SHORED TO ACHIEVE A MORE THOROUGH INVESTI GATION AT NEAR-LIMIT INPUTS OF WEAPON EFFECTS ON PRIMARY STRUCTURE. AS PREDICTED, DURING SHOT HURON THE ECM RADOME SUFFERED COMPLETE FAILURE AND THE BOMB-BAY DOORS RECEIVED MODERATE BUCKLING BECAUSE OF OVERPRES SURE. THE OBJECTIVE ESTABLISHED FOR PROJECT 5.2 WAS SUCCESSFULLY ACCOM PLISHED DURING OPERATION REDWING. IT IS RECOMMENDED THAT THE B-52 NOT PARTICIPATE IN FUTURE NUCLEAR TESTS AS A WEAPONS-CAPABILITY AIRCRAFT U NDER THE DELIVERY CONDITIONS STATED IN THE PRESENT B-52 SPECIAL WEAPON S DELIVERY HANDBOOK (REFERENCE 1).


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