Award Data

APTEK, AS PRIME CONTRACTOR, IN CONJUNCTION WITH GENERAL ELECTRIC COMPANY AND SRI INTERNATIONAL, AS SUBCONTRACTORS, WILL CONDUCT A STUDY TO IDENTIFY AND INVESTIGATE CANDIDATE OVERLAY MATERIALS VERSUS SYSTEM REQUIREMENTS FOR BOTH ACTIVE AND PASSIVE DECOYS. OVERLAY MATERIALS DEVELOPED BY THE NH&S COMMUNITY WILL BE CONSIDERED AS WELL AS PREVIOUSLY UNEVALUATED CANDIDATES SUCH AS RARE EARTH BORIDES. THE ...

OF APPARENT INTEREST TO THE DEFENSE NUCLEAR AGENCY (DNA) IS THE ABILITY TO DETECT THE LOCATION OF TUNNEL BORING MACHINES(TBM). THESE TYPES OF DEVICES ARE USED TO DRILL TUNNELS FOR MILITARY PURPOSES, SUCH AS THE STORAGE OF NUCLEAR DEVICES AND THE CONSTRUCTION OF MISSILE SILOS. BY LOCATING TBM'S IN OPERATION, UNFRIENDLY FORCES COULD IDENTIFY POTENTIAL MILITARY TARGETS. IT IS THEREFORE OF INTEREST TO ...

SIGNIFICANT ADVANCES HAVE BEEN MADE RECENTLY IN THE DISCRETE ELEMENT METHOD FOR THE ANALYSIS OF DYNAMIC EFFECTS ON UNDERGROUND STRUCTURES, VESSELS IN ICE INFESTED WATERS AND IN THE GENERAL SOLUTION OF DISCONTINUUM AND FRACTURING OF STRUCTURAL BODIES UPON IMPACT. THE METHOD HAS UNIQUE ADVANTAGES OVER THE FINITE ELEMENT METHOD PARTICULARLY FOR DYNAMIC ANALYSIS OF UNDERGROUND EXCAVATIONS IN ROCK. CUR ...

THIS ACTIVITY WILL DEVELOP AND DEMONSTRATE A METHOD TO SUPERIMPOSE A SIGNAL ON DATA CHANNELS WHICH WILL IDENTIFY THE PARTICULAR DATA CHANNEL. THE SIGNAL WILL BE GENERATED AS A BINARY CODE. INCLUDED WILL BE THE DESIGN, DEVELOPMENT AND TESTING OF ONE OR MORE PROTOTYPE CHANNEL IDENTIFIER SYSTEM(S) TO INTERFACE WITH REPRESENTATIVE DATA ACQUISITION SYSTEM(S). PRODUCTION CONFIGURATION AND COST INFORMATI ...

STUDIES WILL BE PERFORMED TO EXAMINE THE FEASIBILITY OF USING FAIRLY HIGH RESISTANCE CABLES (R-WIRES) AS A MEANS TO MITIGATE THE LARGE SREMP TRANSIENTS WHICH ARE EXPECTED IN BURIED AND OVERHEAD POWER-LINE DISTRIBUTIONS. THE ANALYSIS WILL UTILIZE COMPUTER CODES WHICH SOLVE THE ONE-DIMENSIONAL TRANSMISSION LINE EQUATIONS IN THE TIME DOMAIN USING FINITE DIFFERENCE TECHNIQUES. A MAJOR PORTION OF THIS ...

PRESHOCKED PRECONDITIONING OF TUFF MAY OCCUR IN TWO MANNERS AT THE NEVADA TEST SITE. FIRST, THE MATERIAL IS "PRESHOCKED" IN A LINEOF-SIGHT TYPE UNDERGROUND NUCLEAR TEST BY THE FIRST WAVE PASSAGE. THE SECOND MANNER MAY OCCUR AS A RESULT OF AREAL SPACE LIMITATIONS WHEN A SECOND EVENT IS SITED WITHIN A REGION OF PRESHOCKED MATERIAL. UNDER CERTAIN LOAD-UNLOADED CONDITIONS THE MATERIAL STRENGTH MAY BE ...

SHEAR DISPLACEMENT ALONG ROCK MASS DISCONTINUITIES (JOINTS) UNDER SATURATED, UNDRAINED CONDITIONS IS ONE OF THE CRITICAL FAILURE MODES FOR A DYNAMICALLY LOADED DEEP BASE STRUCTURE. THE FAILURE MODE HAS NOT BEEN EXPERIMENTALLY SIMULATED FOR DEEP BASE CONDITIONS. THE COMBINED APPLICATION OF NORMAL AND SHEAR STRESSES AT DYNAMIC RATES, WITHOUT PORE PRESSURE DRAINAGE, IS LIKELY TO PRODUCE HIGH PORE PRE ...

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DATA ON THE RESPONSE OF MATERIALS AND STRUCTURES TO NUCLEAR WEAPONS IS CRITICAL TO THE IMPROVED DESIGN OF WEAPONS AND DEFENSE SYSTEMS. MUCH OF THIS DATA IS OBTAINED IN HIGH EXPLOSIVE SIMULATION (HES) TESTS. FOR BOTH HES AND NUCLEAR TESTS, INSTRUMENTATION TO OBTAIN THE REQUISITE DATA MUST BE ABLE TO FUNCTION PROPERLY IN THE HARSH ENVIRONMENT OF THE TESTS. INSTRUMENTATION TRADITIONALLY EMPLOYED IN S ...

A FEASIBILITY STUDY OF IMPROVING DECOY PENETRATION AID (PENAID) PERFORMANCE BY SUPPLYING MEANS TO 1) ALLOW FOR DUAL CENTER OF GRAVITY (CG) LOCATION, THEREBY ENABLING INDEPENDENT FULFILLMENT OF IMPULSE BALANCING AND REENTRY STABILITY REQUIREMENTS; AND/OR 2) COUNTERACT DECOY CONING BY SENSING ITS PRESENCE, AND CORRECTING THE ANGULAR MOMENTUM OF THE DECOY TO ELIMINATE CONING.