Award Data

Accurate blast simulations based on first-principles, 3-D hydro-codes require hours on notebook PCs. Graphical processing units (GPUs) offer the potential of drastic reductions in run-times. Typical computational fluid dynamics codes perform of the order of 10-100 operations per memory fetch and store. In order to harness the potential of graphical processing units (GPUs), near-perfect streaming ( ...

This program seeks to develop and demonstrate, in severe mechanical shock environments, a new state-of-the-art data recorder for environmental measurements of warhead systems. The developed DSR data record will include 4 internal channels for measuring acceleration, weapon case strain, or pressure and 6 external input digital channels for other user defined measurements. High sampling rates will ...

The nuclear weapons community has traditionally focused on the next generation or level of weapon capability complimented by gathering and analysis of actual test data. Now, with the cessation of actual weapons testing, there is an increased need to use the actual test data in modeling techniques to better understand the phenomenology and potential effects of nuclear weapons. The first phase of ...

DEVELOPMENT OF AN INNOVATIVE AND ECONOMICAL EXPERIMENTAL METHOD IS PROPOSED WHICH CAN PROVIDE THE BASIC BEHAVIOR DATA NECESSARY TO MEET THE DNA OBJECTIVE OF PROVIDING ADEQUATE ANALYSIS, DESIGN AND ASSESSMENT METHODS FOR MINIMALLY HARDENED TUNNELS. THIS DEVELOPMENT IS ACCOMPANIED BY ANALYSIS CAPABLE OF REPRESENTING THE COMPLEX INELASTIC MATERIAL BEHAVIOR OF THE ROCK MASS AND OF REPRESENTING SIMPLE ...

Turbulence of gas flows by its very nature is one of the most difficult things to model and measure. We propose to develop a new way of measuring the turbulence and to compare these measurements to predictions using the k-epsilon model. Typical measurements, in the past, use smoke, Schlierin or shadow graph techniques to visually infer turbulence characteristics. These features are either motio ...

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WE PROPOSE TO PROVE THE SCIENTIFIC AND TECHNICAL FEASIBILITY TO USE ELECTROSTATIC ACCELERATION TO BOOST THE ENERGY OF CF-252 FISSION FRAGMENTS AS A LABORATORY SIMULATION OF COSMIC RAY EFFECTS I MICROELECTRONICS. THE PROJECT OBJECTIVE IS TO BOOST THE ENERGY SUCH THAT A LARGE FRACTION OF THE ACCELERATED IONS HAVE A RANGE IN SILICON GRATER THAN 20 MICROMETERS. THIS SOLVES A NUMBER OF PROBLEMS ASSOCIA ...

A GREAT DEAL OF EFFORT HAS BEEN SPENT IN RECENT YEARS TO DEVELOP STANDARDIZED METHODOLOGIES FOR ACCEPTING AND VERIFYING EMP HARDENED MILITARY FACILITIES. THE FIRST OF THESE STANDARDIZATION EFFORTS TO BE PUT INTO EFFECT APPLIES TO FIXED SITE, CRITICAL, TIME URGENT C4I FACILITIES. THE REQUIREMENTS EXISTS FOR AN ADVANCED INSTRUMENTATION APPROACH THAT CAN OVERCOME THE DIFFICULT ACQUISITION ENVIRONMENT ...

ONE COMMON NUCLEAR WEAPONS EFFECTS CIMULATION TECHNIQUE SIMULATES THE EMP RESPONSE OF LONG CABLES USING DIRECT CURRENT INJECTION. DIRECT CURRENT INJECTION TYPICALLY INVOLVES THE CONNECTION OF HIGH VOLTAGE PULSE SOURCES TO THE CABLES THAT ARE ATTACHED TO A MILITARY SYSTEM. A RECENTLY DEVELOPED MILITARY STANDARD SPECIFIES THAT DIRECT CURRENT INJECTION TESTING WILL BE USED IN CONJUNCTION WITH SEVERAL ...

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