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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 ...

THERE IS A WELL ESTABLISHED NEED FOR IMPROVED MATERIAL PROPERTIES CHARACTERIZATIONS IN CONJUNCTION WITH NUCLEAR WEAPONS EFFECTS TESTS IN THE TUNNEL BED TUFFS BENEATH RAINIER MESA. SUBSTANTIALLY IMPROVED SITE CHARACTERIZATION TECHNIQUES WOULD PERMIT MORE CONFIDENT SELECTION OF INDIVIDUAL TEST SITES, BETTER ASSURANCE THAT TESTS WILL BE FULLY CONTINED, IMPROVED PREDICTIONS AND UNDERSTANDING OF GROUND ...

A REQUIREMENT EXISTS TO ACQUIRE ACCURATE AIRBLAST LOAD DATA AT DYNAMIC PRESSURES UP TO 10 KBAR FOR LONG DURATION. THE GAGE USED TO MAKE THESE MEASUREMENTS SHOULD EXHIBIT A LINEAR AND NONHYSTERETIC TRANSFER CURVE, HAVE ADEQUATE FREQUENCY RESPONSE TO MEASURE THE PARAMETER OF INTEREST, USE EXISTING SIGNAL CONDITIONING, SHOULD BE SMALL TO AID INSTALLATION IN STRUCTURES, AND MOST IMPORTANTLY BE EXTREME ...

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IT IS PROPOSED TO DEVELOP A MANAGEMENT METHODOLOGY FOR PERFORMING TRADEOFF STUDIES OF NUCLEAR SURVIVABILITY OPTIONS FOR BATTLEFIELD SYSTEMS. THE PURPOSE FOR THE METHODOLOGY IS TO PROVIDE SYSTEMS MANAGERS (AND THEIR ADVISERS) A METHOD FOR ENSURING THE COST-EFFECTIVE SURVIVABILITY TECHNIQUES ARE INCLUDED IN THE SYSTEMS PLANNING IN EARLY STAGES. THE INTENT OF THE PROPOSAL IS TO SUPPORT IMPLEMENTATION ...

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Large X-ray generators using gas fill loads are a key element in the DTRA simulator program. Consistent relative timing between the injection of the gas shell and the generator current pulse is crucial to producing consistent, high-yield x-ray pulses.To that end HY-Tech proposes replacing existing high voltage trigger pin technology, with a sensitive, all fiber-optic heterodyne interferometer ba ...