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The innovation proposed is the construction of a unified nonlinear turbulence model for use in jet noise studies that will operate in an invariant manner (fixed coefficients/correction terms), and will provide reliable mean flow and anisotropic stresses predictions for a broad range of jet conditions. Model construction will be based on extensions to an operational explicit algebraic stress model ...

ChemImage Corp. and ITT are proposing to demonstrate the feasibility of detecting and identifying chemical and biological threats using UV Raman Chemical Imaging techniques from a stand-off distance of 1 meter and against complex stationary backgroundmaterials such as asphalt and soil as commonly encountered by fielded military and homeland security personnel. The use of a standoff surface detect ...

The circular cycloidal mass spec (our patent application 10/981,511) is derived from the standard linear cycloid analyzer. Instead of crossed uniform electric and magnetic fields, the electric field has circular symmetry. Thus the ion trajectories proceed periodically around the center. This provides long trajectories (high resolution) within a small analyzer, typically 50 mm in diameter (low weig ...

Measuring small loads in small cable/wires is needed to sense force or torque in robotic joints. Load monitoring is normally done using a load cell with strain gauges, which have a low-level output and requires a rigid structure for the strain gauge attachment, resulting in a bulky structure where space is at a premium. In addition, the low level signal requires extensive signal conditioning in th ...

The innovation proposed is the construction of a unified nonlinear turbulence model for use in jet noise studies that will operate in an invariant manner (fixed coefficients/correction terms), and will provide reliable mean flow and anisotropic stresses predictions for a broad range of jet conditions. Model construction will be based on extensions to an operational explicit algebraic stress model ...

High temperature capacitors based on a new family of ferroelectrics are proposed. The Curie temperatures of the (1-x)BiMeO3 - (x) PbTiO3 (Me = Sc, In, Yb, or Fe) family have been found to range from 450C to >600C. Multilayer ceramic capacitors based on these materials offer a distinct advance in the working temperature compared to currently available devices. The aim of this Phase I project is to ...

We are proposing a new technological solution to complex figure control architectures for Sun-Earth ultraviolet (UV) and extreme ultraviolet meter sized optical instruments and detectors. Retention of low mass distribution for large aperture optics means eliminating heavy complex wiring bus and controls for UV or EUV optics and detector instruments with large numbers of active adjustment or actuat ...

Computational analyses aiding experimental testing of rocket propulsion systems have very rigorous requirements relating to turnaround time and fidelity of analyses. The performance of rocket propulsion systems is intricately tied to the functioning of valve and feed systems, since feed systems exert flow control, regulate pressure and suppress instabilities. CFD based analyses of such systems is ...

One of the main issues for III-nitride growth is the lack of a suitable native substrate. Growth on foreign substrates such as sapphire or SiC results in nitride material with a high density of defects due to large mismatches in lattice constant and thermal expansion. Nonetheless, nitride devices grown on these substrates have demonstrated optical and electronic properties that are practically unm ...

The proposed system uses a combined hard-core processor/programmable-logic chip to implement the front-end control and processing functions of an intelligent sensor system. Combining these functions in a single chip is an innovation, relative to a traditional processor-only based system, because it provides re-configurable control of the sensor interface, i.e. analog and digital I/O and signal con ...