Award Data

This Phase I project has two primary objectives. The first objective is to evaluate the feasibility of a fully ion implanted fabrication process based on the heterodimensional 2-D MESFET. The new device, the 2-D JFET, will have p+ ion implanted sidegates which laterally modulate a thin, highly doped n-type conducting channel. The 2-D JFET should have excellent high speed, low power characteristics ...

The ultimate purpose of the proposed R&D is to develop and demonstrate an innovative software development environment which supports the engineering, analysis, development, test, maintenance, and reuse of software for embedded, heterogeneous, real-time systems. The proposed approach is innovative in two respects: (1) it is based on the integration of two best-of-breed environments, ObjecTime/ROOM ...

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The overall quality and the comprehensive strength, in particular, of concrete are critically dependent on the water content in the concrete mixture. It is also essential to know if the concrete has reached a stage of moisture equilibrium before surface finishes such as paint or carpet can be applied. At present, no reliable method or easy-to-use instrument exists for determining the moisture co ...

IT IS PROPOSED THAT ADVANCED ARCJET ENGINES CAN BE DEVELOPED USING KNOWN PRINCIPLES FOR ADVANCED NOZZLE DESIGN, ARC ATTACHMENT, INCREASED CHAMBER EFFECTIVE TEMPERATURE AND SO FORTH. SUCH STUDIES ARE PARTIALLY SUPPORTED BY EXPERIMENTAL RESULTS BY RESEARCHERS IN THE RUSSIAN FEDERATION. YET THESE PRINCIPLES RESULT IN INCREASED HEATING OF THE ANODE, AS THE ARC MORE EFFECTIVELY HEATS THE ANODE. THIS CA ...

BIMODAL REACTORS FOR POWER AND PROPULSION HAVE LONG BEEN OF INTEREST FOR MISSIONS REQUIRINGS BOTH HIGH POWER AND LARGE DELTA-V; E.G., HIGH ALTITUDE, GEOSYNCHRONOUS AND PLANETARY MISSIONS. IT PROPULSIVE THRUST AND ELECTRIC POWER CAN BOTH BE SUPPLIED FROM THE SAME UNIT, A LARGE POTENTIAL SAVINGS CAN OCCUR. SUCH A REACTOR CAN BE DEVELOPED FROM A URANIUM CARBIDE FUELED THERMIONIC REACTOR WITH SINGLE C ...

Phase I proposes to demonstrate an easy-to-operate, inexpensive room temperature neutron detector based on boron-doped diamond. The detector would produce an immediate signal related to low-level neutron irradiation. The concept exploits the high neutron absorption cross section of B-10, which results in excellent sensitivity. The charge carriers generated in the diamond by a neutron absorption ev ...

Unexpected coupling between nuclear reaction cross sections and the solid state of metal deuterides has been demonstrated in layered Pd-PdO deuterided structures. As a result, high rates of charged particle and neutron measurements have been observed through a reaction initiated by altering the chemical state of the system. Moreover, the system acts as an amplifier of fast neutrons, with a 200-to- ...

The development of a microwave curing method for resin matrix composites and jointing/bonding epoxy is proposed. This technique will take advantage of the ability of vapor-grown carbon fiber (VGCF) to absorb microwave energy with high efficiency. By adding VGCF to resin matrix composite material and epoxy, we hope that the materials can be processed by microwave irradiation in a manner that result ...

Arca proposes research leading to development of a suite of methodology support products to help meet the need for innovative assurance techniques appropriate for emerging information technologies. The product will consist of a licensable methodology and supporting materials for specifying, building, and evaluating assurance arguments for products and systems based on the capability of security en ...