Abstract:Creating information products to answer"Tell Me About"questions requires the ability to identify key pieces of information relevant to a complex set of information requirements. Complicating matters, these key pieces of information exist in multiple modalities scattered across data stores,… more
Abstract:Semantically Linked Data is widely seen as a revolutionary approach for maximizing the usefulness of existing and future information. In the materials domain, semantically linked materials data holds considerable promise with the ability to facilitate materials research and product development,… more
Abstract:ABSTRACT: Although Natural Language Processing research has produced powerful techniques for parsing and data extraction, computers remain mostly oblivious to the meaning of the language they process. Computers cannot, in general, connect the words and phrases in language to a larger model of the… more
Abstract:Modern military and commercial aircraft include numerous RF systems and associated antennas serving a multitude of functions. The designed free-space performance of these antennas can be degraded by their installation on the airframe due to interactions with the platform, and the co-siting of so… more
Abstract:Modern military systems contain numerous avionics and electronic systems that must perform to very high standards in hostile environments in the presence of numerous potential sources of electromagnetic interference (EMI). On airborne platforms for example, there could be dozens of RF systems… more
Abstract:Radar signatures of small boats and ships are inherently complex due to their myriad topside features: railings, antennas, masts, ladders, armaments, pilot stations, outboard engines, storage bins, etc. In boats, the use of fiberglass and other radar-penetrable materials for hulls and decks further… more
Abstract:ABSTRACT: An opportunity exists to develop methodologies and tools to objectively assess the overall training effectiveness of a simulation and pinpoint specific system characteristics such as fidelity and training strategy support which contribute to the training effectiveness or lack thereof. To… more
Abstract:ABSTRACT: A key problem in the rapid and lower cost development of spacecraft is that the various devices that comprise the spacecraft bus do not typically provide a single standard interface and/or communications protocols. This forces a design-to-order paradigm in which a spacecraft bus is… more
Abstract:ABSTRACT: The U.S. Air Force has an identified an important need for improving the reliability of sensor systems used for critical control of aerospace engines and vehicles. Reliable sensors are key to achieving a significant reduction in maintenance costs and cost-effectively increasing the… more
Abstract:Diamond Visionics proposes a solution to decouple rendering channels from simulators and displays by developing a novel architecture consisting of both hardware and software. Modern video processing and networking techniques will be utilized such that any display in the system can be connected to… more
Abstract:Pattern of Life characterization involves studying how people interact with the world around them on a daily basis: places they visit; people they interact with; actions they perform. Effective tracking of such patterns of life has direct implications to defense intelligence, cyber intelligence and… more
Abstract:In Phase 2, Diffraction LTD, in collaboration with Optics 1, proposes to develop a variable magnification clip-on thermal imager (VM-COTI) that will be compatible with a variety of weapon and head mounted optical systems ranging from 1X night vision goggles (NVGs) to 5X ACOG scopes. The VM-COTI… more
Abstract:ABSTRACT: Digital Solid State Propulsion is proposing to develop a Divert and Attitude Control System (DACS) for tactical air superiority missiles, using proprietary Electric Solid Propellants (ESPs). Unlike conventional propellants, ESPs can be ignited with electric power applied through inert… more
Abstract:ABSTRACT: Digital Solid State Propulsion is proposing to develop an Electrically Variable Explosive (EVE) which, through direct electrical control, will provide on-demand sensitization and throttling for enhanced energy output in explosive fills. EVEs are based upon DSSP"s Electric Solid… more
Abstract:The modeling and simulation industry has long been plagued by errors in synthetic natural environment representations and services which can impact training effectiveness. While synthetic environment errors can arise within a single format or across formats in a single simulator, the problem is… more
Abstract:ABSTRACT: Environmental protection coatings are required to provide oxidation and hot corrosion protection to hot section turbine components. Unfortunately, the current generation of such coatings can degrade the fatigue resistance of the coated alloy. It is increasingly recognized that, due to… more
Abstract:ABSTRACT: Thermal barrier coatings (TBC) are currently employed to protect gas turbine engine components. Thermally exposed TBC systems have been observed to be affected by moisture. This spallation mechanism, Moisture Induced Delayed Spallation (MIDS), occurs at room temperature while the coatings… more
Abstract:The low density of magnesium makes it of interest for the development of advanced materials having high specific strength and stiffness. Current Mg applications, however, are limited by the performance and cost/quality relationships of existing Mg-alloy systems. One approach to obtain improved Mg… more
Abstract:We will manufacture high current handling balanced photodiodes in a rugged 8-pin Kovar package having the following characteristics: (a) Small Package with height of 5 mm, and volume of 2.5 cubic cm; (b) Use 7 micron core, loose tube, SM fiber for tight bend radius; (c) Responsivity>0.7 A/W… more
Abstract:Although the thyratrons used in klystron modulators for large accelerator projects function properly, they need replacement every 10,000 hours at a cost of $13,000 each, plus labor. Furthermore, periodic maintenance is required to adjust their reservoir heater voltage over the thyratron lifetime.… more
Abstract:The U.S. Navy"s VLF/LF Submarine Broadcast remains vital to America"s strategic defense, providing reliable means to command submarines at depth, as well as other fleet assets, using high power radio stations all over the globe. The five major VLF stations with their enormous high-Q… more
Abstract:The goal is to develop external mechanical filters to eliminate signals above 2 kHz from accelerometers. Dominca"s patented layered-media approach will be used to develop filters for high-shock accelerometers used in explosive and impact events. Layered-media theory has been applied… more
Abstract:Flexible solar cells based on epitaxial liftoff (ELO) manufacturing processes have enabled a path towards low-cost and high-power flexible photovoltaic arrays. Lamination techniques incorporating these arrays can be adapted to a variety of end applications ranging from structural power for UAV… more
Abstract:ABSTRACT: Conventional rigid-panel solar arrays are deployed with complex mechanisms or dynamically-tuned and damped hinges, with cables or external linkages for synchronization. Altering the number or size of panels incurs significant new engineering, tooling, manufacturing and integration. This… more
Abstract:ABSTRACT: The promise of lightweight, flexible and ubiquitous solar power depends greatly on the form factors available, their ruggedness and their cost. Nascent technologies based on organic active materials require substantial isolation from moisture vapor and oxygen to enable peak performance… more
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