Award Data

THIS PROPOSAL IS AIMED AT TESTING THE FEASIBILITY OF A NEW AND INNOVATIVE IDEA FOR THE PRODUCTION OF LAYERED SEMICONDUCTOR DEVICE STRUCTURES, SUCH AS GALLIUM ARSENIDE-GALLIUM ALUMINUM ARSENIDE. THE EPITAXIAL GROWTH WILL BE DONE BY THE PROCESS OF INDIRECT PLASMA ENHANCED LOW PRESSURE METAL ORGANIX CHEMICAL VAPOR DEPOSITION UNDER THE INFLUENCE OF A MAGNETIC FIELD APPLIED TO THE GROWING LAYER. IT IS ...

The need for small portable, low-cost instruments for field environmental measurements is well documented. Nomadics is developing powerful handheld instruments based on the portable computers and PCMCIA cards. We intent to marry existing proven (but not yet deployed) sensor technologies with portable computers (such as laptops, palmtops and PDAs) using the industry standard PCMCIA card and virtu ...

There is an increasing need for an innovative technology for low cost recovery and recycling of heavy metals found in industrial wastewater streams. Target heavy metals include elements such as chromium, nickel, cadmium, lead, copper, and zinc. Existing wastewater treatment technologies such as bioremediation can neither biodegrade heavy metals, nor can they decontaminate them. Other conventiona ...

THIS INVESTIGATION WILL BE DIRECTED TOWARDS THE DEVELOPMENT OF A HIGH-ACCURACY CRYOGENIC LINEAR ACTUATOR. ONE OF THE MOST STRAIGHTFORWARD APPROACHES TO THE PROBLEM OF LINEAR MOTION AT CRYOGENIC TEMPERATURES USES A ROTATING STEPPER MOTOR AND LEADSCREW ARRANGEMENT TO ACHIEVE THE DESIRED RESOLUTION AND ACCURACY. TO DATE, THESE EFFORTS HAVE BEEN UNABLE TO PRODUCE HIGH-ACCURACY OVER A REASONABLE LIFETI ...

Computational algorithms and codes will be tailored specifically to the Air Force's needs in groundwater flow and pollutant transport as required in Environmental Engineering. The project will build heavily on previous and ongoing Ecodynamics work for Sandia Laboratories on the Waste Isolation Pilot Plant (WIPP) project and on proposed work for the U.S. Army Waterways Experiment Station. Robust, e ...

Development of high power microwave (HPM) sources for Air Force applications requires cathodes with long usable lifetimes, negligible anode-cathode (A-K) gap closure, reproducible functioning under high repetition pulsing, uniform current density, and negligible plasma/current production from nearby surfaces. Cathodes must maintain such stable electron beam output characteristics for > 1 nsec. We ...

A novel, high energy density, aluminum-polymer propellant with ultra-high surface area and the potential for extremely high reaction rates, full utilization of the aluminum material, and an integrated fuel/oxidizer system is proposed. A patented ultra-high speed nanotechnology vacuum process is used to produce the nanolaminate material, which, even in powder form, can have hundreds of very thin a ...

ACCURATE AND EFFICIENT PREDICTION OF SKIN FICTION AND HEATING RATES FOR SUPERAND HYPERSONIC VEHICLES HAS LONG BEEN A GOAL OF COMPUTATIONAL FLUID DYNAMICS (CFD). THE USE OF STANDARD CFD METHODS TO RESOLVE THE NEAR-WALL BOUNDARY LAYER (WHICH IS ESSENTIAL FOR GOOD PRECITIONS OF AIRFOIL BEHAVIOR) USING A LARGE NUMBER OF GRID POINTS IS SELDOM FEASIBLE, OFTEN INACCURATE, AND IF DONE, ALWAYS REQUIRES EXC ...

Systems & Processes Engineering Corporation (SPEC) proposes to develop a high speed data acquisition module using state-of-the-art GaAs integrated circuit and Multi-Chip Module (MCM) technologies. The data acquisition MCM will include an 8-bit ADC, a custom GaAs integrated circuit, 32 Kbytes of RAM, and an 8-bit microcontroller to provide control and serial communications. The module will operate ...

PROGRESS IN EXPERT SYSTEMS IS MAKING IT POSSIBLE TO REALIZE PRACTICAL APPLICATIONS IN A WIDE RANGE OF SPACE SYSTEM TASKS. THE OPERATIONAL EMPLOYMENT OF EXPERT SYSTEMS ON SPACE PLATFORMS WILL BE DRIVEN BY THE EFFICIENT UTILIZATION OF COMPUTING RESOURCES WITHIN SPACE SYSTEM ENVIRONMENTS. THIS DOCUMENT PROPOSES TO IDENTIFY CHARACTERISTICS/ATTRIBUTES REQUIRED FOR SPACE SYSTEM APPLICATIONS, IDENTIFY TH ...