Award Data

CURRENT COROPUTER ANALYSIS OF BUBBLE-SUBMERGED STRUCTURE INTERACTION, DUE TO CONVENTIONAL WEAPONS, IS EXTREMELY RESOURCE INTENSIVE. THEREFORE, IT IS VERY DIFFICULT TO REPLACE FULL SCALE LIVE FIRE TESTING OF SUBMERGED STRUCTURE WITH SCALE TESTING OF SUBMERGED STRUCTURES AND COMPUTER ANALYSIS. THE GOAL OF THIS EFFORT IS TO DEVELOP AN ACCURATE AND EFFICIENT NON-REFLECTING BOUNDARY FOR EULERIAN HYDROD ...

A NEW PLASMA OPENING SWITCH (POS) MODEL IS PROPOSED FOR IMPLEMENTATION INTO AN ELECTRICAL CIRCUIT COMPUTER CODE. THE UNIQUE APPROACH DESCRIBED IN THIS PROPOSAL INCORPORATES A SEGMENTED SHEATH MODEL INTO THE EXISTING MAGNETOHYDRODYNAMICG (MHD) CODEPRISM DEVELOPED BY BERKELEY RESEARCH ASSOCIATES, INC. THE VERSION PROPOSED FOR PHASE I INCLUDES 1) TWO-DIMENSIONAL MHD MOTION OF THE BULK PLASMA; 2) RELA ...

WE WILL ADAPT AND IMPROVE AN INNOVATIVE MOVING-TARGET DETECTION AND TRACKING APPROACH, BASED ON ARTIFICIAL NEURAL NETWORK (ANN) PROCESSING TECHNIQUES, FOR APPLICATION TO THE TRACKING OF BOOST-PHASE MISSILE TARGETS IN THE PRESENCE OF INFRARED CLUTTER DUE TO HIGH-ALTITUDE NUCLEAR EXPLOSIONS (BANES). OUR RESEARCH WILL USE TIME-SEQUENCED SIMULATED INFRARED IMAGES OF BANE BACKGROUNDS WITH MOVING TARGET ...

ESTABLISH DESIGN CRITERIA FOR, AN OPTICAL PROBE TO MEASURE THE DUST LOFTED BY THE SHOCK WAVE DURING A NUCLEAR BLAST WAVE SIMULATION. DUST DENSITY IS DETERMINED FROM THE REDUCTION IN INTENSITY OF LIGHT PROJECTED OVER AN INTERROGATION PATH TRANSVERSE TO THE FLOW. USE OF A SIMPLE LIGHT SOURCE AND DETECTOR WITH FIBER OPTIC TRANSMISSION LINES PRODUCES AN INEXPENSIVE RUGGED INSTRUMENT WHICH CAN BE DEPLO ...

THE ADVANCE OF TECHNOLOGIES MAY MAKE DEFENSE AGAINST BALLISTIC MISSLES TECHNICALLY AND ECONOMICALLY FEASIBLE. A NATIONAL POLICY DEBATE HAS BEGUN ON THE DESIRABILITY OF MAKING A TRANSITION FROM STRATEGIC DETERRANCE TO STRATEGIC DEFENSE. THE DEBATE IS AT PRESENT HIGHLY CONFUSING AND UNSTRUCTURED, SINCE THE VARIOUS ARGUMENTS FOR AND AGAINST THAT TRANSITION ARE BASED ON DIFFERING ASSUMPTIONS, OFTEN TA ...

A NEW APPROACH TO ULTRA-HIGH POWER PULSED TECHNOLOGY, APPLICABLE TO RADIATION TEST SIMULATION, IS PRESENTED. IT IS BASED ON THE DEVELOPMENT OF ONE TERAWATT (1 TW) PULSED POWER GENERATOR MODULES. THESE MODULES CAN BE CHARGED IN AIR AND USE ONLVSOLID STATE COMPONENTS. THEV ARE SWITCHED BY LASER-ACTIVATED CLOSING SWITCHES. THE RESULTING MODULES ARE EXTREMELY COMPACT AND, UTILIZING A SINGLE STAGE OF S ...

THE ELECTRO-THERMAL-COMBUSTION (ETC) GUN CONCEPT WAS DEVELOPED AS AN ADVANCED TECHNIQUE FOR HYPERVELOCITY GUN SYSTEMS WHICH AUGMENTS THE ELECTRICAL ENERGY INPUT OF THE ORIGINAL ET GUN BY USING A REACTIVE WORKING FLUID. THIS HOWEVER HAS COMPROMISED THE ABILITY TO CONTROL THE INTERIOR BALLISTIC PROCESSED PRINCIPAL ADVANTAGE OF THE ET GUN CONCEPT. IN THE ETC GUN, THE GAS GENERATION RATE IS ONE STEP R ...

A MAJOR ELEMENT OF THE THREAT TO SPACE LWIR SURVEILLANCE SYSTEMS FROM EXOATMOSPHERIC NUCLEAR WEAPONS EFFECTS IS THAT OF EMP/SGREMP PRODUCED ELECTRICAL OVERSTRESS (EOS) ON READ OUT ELECTRONICS USED IN CONJUNCTION WITH FOCAL PLANE ARRAYS IN IMAGING SYSTEMS. USE OF EXISTING TECHNOLOGY FOR PORTECTING SUCH CIRCUITS FROM EOS WOULD BE PROBELMATICAL BECAUSE OF THE CRYOGENIC TEMPERATURES AT WHICH THEY OPER ...

A GOOD MODEL FOR PREDICTING THE CONDUCTION AND OPENING CHARACTERISTICS OF PLASMA OPENING SWITCHES IS REQUIRED IF SWITCH- ES CURRENTLY IN USE ARE TO BE SCALED UP TO THE CURRENT AND VOLTAGE RATINGS REQUIRED BY THE FAMILY OF THREAT SIMULATOR. EMPIRICAL VERIFICATION OF THE NUMEROUS MODELS WHICH HAVE EVOLVED AROUND DIFFERENT CONDUCTION PROCESSES HAVE MET WITH LIMITED SUCCESS BECAUSE SWITCH CHARACTERIST ...

IN THIS PROPOSAL WE OFFER TO DEVELOP FOR THE DEFENSE NUCLEAR AGENCY A SOFTWARE DESIGN FRAMEWORK THAT CAN BE USED BY ALL OF DNA'S CONTRACT ORGANIZATIONS FOR THEIR OWN INDIVIDUALLY TAILORED DNA COMPUTATIONAL SOFTWARE--EXISTING OR DEVELOPMENTAL. THIS FRAMEWORK MAKES USE OF NEWLY DEVELOPED OBJECT-ORIENTED DESIGN AIDES TO ENABLE USERS TO BUILD THEIR OWN CODES FOR USE ON THE NEWEST WORKSTATIONS AND MASS ...