Award Data

The goal of this program is to develop high linearity and high efficiency power amplifiers through innovative ultra linear transistors and digital signal processing (DSP) circuit linearization techniques for airborne or UAV applications. Specifically, we will demonstrate average output power, PAE, and inter-modulation distortion (IMD) of 150 Watts, 50% and -50 dBc respectively for the L- band mono ...

The Cell processor architecture represents a significant shift in deeply coupled multi-core processor architecture. In the first implementation, the Cell Broadband Engine (CBE) has broken new ground in clock speed, density and power dissipation. By creating a design optimized for a specific class of algorithms, the CBE can deliver peak performance of over 250Gflops and has been measured with susta ...

Friction stir welding (FSW) is a solid state joining process with unique characteristics that offer opportunities for cost savings, new fabrication methods, and new structural designs. FSW eliminates many of the problems associated with fusion welding techniques. In addition, FSW generates a “stir zone” microstructure that consists of very fine, equiaxed grains that are ideal for post-weld f ...

Agiltron, in collaboration with Tufts University, proposes to realize MWIR fiberoptic switches that meet all the required performance specifications for the new type of compact airborne IRCM applications. The approach is based on our extensive experience in volume production of fiberoptic switches of industrial leading performance as well as in-house chalcogenide glass fabrication capability. Th ...

Next Century Corporation and the University of Washington’s Department of Atmospheric Sciences propose development of the Micro-Meteorological Modeling (M3) system with the goal of rapidly performing high-resolution atmospheric dispersion modeling, ideally down to the microscale level, with a high degree of accuracy and confidence. Our M3 graphical user interface will provide the user with a hi ...

A new approach is proposed for high fidelity analysis of aeroelastic characteristics of integrally bladed rotors. This new multiscale approach for nonequilibrium flow path analysis will yield high fidelity solutions including all turbulence scales at a fraction of the computational cost of RANS. Integration of this advanced capability within an existing multidisciplinary, multifidelity, transien ...

Previous studies have shown that superhydrophobic surfaces have skin-friction drag reducing properties in the laminar flow region, but not in the turbulent flow region. The drag reducing properties of superhydrophobic surfaces are recognized to result from air voids trapped in the surface, and the apparent lack of effectiveness in the turbulent flow region could result from: (1) lack of robust air ...

The present text proposes the development of a computational infrastructure to enable rapid creation of high-quality conforming finite-element computational models---compatible with all existing finite-element simulation tools. The specific proofs-of-concept to be pursued in the Phase I will revolve around generation of tetrahedral meshes, but extensions to other types of finite-element types (e.g ...

A proposed acoustic pattern recognition system will be based around an array of acoustic sensors to allow localization of sound events and cancellation of background noise. The number of sensors could be adjusted to vary the coverage area depending on the site. The measured signals will provide the input to a sophisticated signal processing algorithm that will separate the acoustic signals into ...

The metal sheath used to protect the V-22 aircraft rotor blade leading edge against sand, rain and ice erosion, and provide heating to prevent ice buildup, is heavy, rigid and expensive. An elastomeric boot can offer lower weight, flexibility, abrasion-resistance and field repairability. However, elastomeric boots have exhibited delamination and creep failure caused by high centrifugal loads and ...