Award Data

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 ...

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 ...

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 ...

Survival of present day microelectronic circuits depends on their protection from self generated and external electromagnetic interference. This proposal is oriented toward the class of interference generally referred to as overvoltage transients. Means for mitigating these transients include gas discharge tubes, and various solid state devices. Each of these has their own advantages in particu ...

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 ...

A FEASIBILITY STUDY IS PROPOSED FOR AN ENCAPSULATED, HIGH TEMPORAL RESOLUTION, BROAD RANGE PIEZOELECTRIC POLYMER STRESS GAUGE TO MEASURE SHOCK-TO-DETONATION TRANSITIONS IN EXPLOSIVES AND PROPELLANTS. THESE MEASUREMENTS ARE KEY TO THE DEVELOPMENT OF EFFECTIVE "GROWTH TO DETONATION" MODELS WHICH ARE A NECESSARY ELEMENT IN THE ASSESSMENT OF THE VULNERABILITY AND/OR DEVELOPMENT OF TACTICAL SYSTEMS INC ...

The Ktech Team proposes a feasibility study of a fuel/air driven flux compression power unit (FCPU) for electric guns. Through variations of inductance gradients and through changes in scale, the proposed technology will be applicable to both electrothermal/chemical and electromagnetic guns. In the Phase 1 effort, we develop simulation models to predict the performance of the flux compression po ...

We propose, in Phase I and Phase II, to build an X-ray simulator capable of easy transportation between sites which can be built for a low cost (

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We propose to design a compact, multiple purpose electromagnetic sensor for monitoring the extremely low frequency (ELF), very low frequency (VLF), and low frequency (LF) spectrum. Our goal is to design a modular, low cost sensor capable of being configured for multiple applications and capable of being employed in remote, unattended sensor networks. We describe three applications or scenarios t ...