Award Data

75602-Nitric acid production is currently the largest source of nitrous oxide emissions in the chemical industry. Reductions in these emissions are urgently required because nitrous oxide is both a strong greenhouse gas and an ozone layer depleter. Although measures exist to eliminate nitrous oxide emissions from adipic acid plants, they cannot be applied to eliminate nitrous oxide emissions fro ...

We propose using response surface methodology (RSM) as a tool to better understand the effects of engine design parameters and operating conditions on plume signature, and to improve signature predictions through optimized selection of analysis inputs. Often rocket engine operating conditions and design variables are not well known, either because the systems being simulated are foreign, or beca ...

The utilization of High Test Hydrogen Peroxide (HTP) as military propellant can be greatly simplified by replacing the classical catalyst bed with a novel thermal decomposer. A thermal peroxide decomposition system offers the potential to enhance the operability and system safety margin of peroxide systems. Fundamental knowledge of decomposition kinetics, including the effects of common stabiliz ...

It is currently nearly impossible to define, manage and deploy the rules for secure information access in an agile and consistent manner. Moreover, there is no robust rules-based implementation for cross-domain message filtering (higher-security to lower-security transfers). Without the ability to enact and deploy XML-based security policy (rules sets) quickly, easily, and with a minimum of man-in ...

76053-In laser wakefield acceleration, a plasma formed in a gas jet is used to create very high acceleration gradients to accelerate electrons. Scaling of laser wakefield acceleration to higher net energy gains requires gas jets that not only are centimeters long, but also have sharp edge density gradients. However, with conventional nozzles, the gas jets emitted into the electron-beam vacuum ch ...

75779-Both U.S. and European scientists are evaluating the use of permanent magnet wigglers in the damping rings of linear colliders to reduce vertical emittance. These wigglers pose unique analysis, design, and engineering challenges. The first challenge is to control the nonlinear dynamics caused by the magnetic field transverse roll-off, which can disrupt beam quality and damage the wiggler. ...

Split sleeve cold working has been used for many years to enhance fatigue and crack growth life of holes. Holes cold worked in high strength aluminum alloys such as 7050 and 2297, however, have shown a tendency to crack in the short transverse grain direction, as reported by Burt and Minarecioglu. They showed that these cracks are the result of exceeding the alloy's ultimate shear strength, and ...

In this Phase I SBIR, Vista Clara and Quantum Magnetics propose to demonstrate the feasibility of detecting and tracking military vehicles at very long ranges using a long-baseline array of magnetic and acoustic sensors. Our AMAS system concept is based on a novel multi-sensor acquisition device, and advanced magnetic/acoustic data fusion techniques. The Phase I work plan will establish the techni ...

The split-sleeve process is a standard life enhancement procedure. Advances in material science are producing new materials (e.g., 7050 and 2297) that are replacing legacy alloys (2024 and 7075). However, coldwork technology has not kept up with material advances. Coldworking the new aluminum alloys, particularly in the short-transverse grain orientation, with the split-sleeve process creates c ...

75180-Researchers in the Genomes to Life program, as well as in other biomedical research programs, need a more effective way to search across the multiple heterogeneous databases that are compiling information approaching petabyte levels. Current approaches are limited because they are based on heuristics and keyword indexing and rely on manual annotation. This project addresses the problem by ...