Abstract:An innovative pistonless impact mechanism for a seawater hydraulic rock drill is proposed. Compared to the current poppet-kicker port cycle, and poitentially higher impact energy. The proposed mechanism eliminates heavily loaded sliding elements, a chief problem in current mechanisms. The pistonless… more
Abstract:Creare is developing a novel technique for forming biaxially oriented thin and thick films of high temperature superconductor YBa(2)Cu(3)O(x) on non-lattice matched substrates. These films should display high critical current densities because they will avoid the weak link problem that occurs… more
Abstract:Creare is developing an innovative capillary-based evaporator component for direct cooling of advanced electronic modules and for interfacing with capillary pumped thermal management loops for spacecraft. A reentrant capillary structure design will increase by an order of magnitude the pumping… more
Abstract:We propose an innovative system for recovering waste heat from fighter aircraft. The system will tap the large quantities of available heat from the engine or airframe and use a Rankine cycle to generate useful power for the aircraft electrical systems. The innovative aspect of this power conversion… more
Abstract:Future multi-chip modules (MCMs) for radar and power electronics will need to operate at higher power densities. However, current power electronics modules are approaching operating limits due to the limited effectiveness of conventional techniques for heat removal via backside cooling. We propose… more
Abstract:The objective of the proposed project is to reduce by more than an order of magnitude the cost of reliable and contemination-free hermetically sealed compressors for long life Stirling and Pulse Tube Cryocoolers for spacecraft. State-of-the art compressors use unlubricated flexure bearings and… more
Abstract:Metalorganic chemical vapor deposition (MOCVD) of III-V semiconductor thin films will be improved through the development and application of unique gas injection hardware. The innovative hardware utilizes the vertical showerhead-type reactor configuration. It will enable for the first time detailed… more
Abstract:This proposal addresses the development of a miniature centrifugal compressor, a critical component for a low capacity, vibration free, long life cryocooler. Key features of the development include innovative fabrication methods to produce a unique rotor and impeller that allows the machine to… more
Abstract:AN INNOVATIVE WASTE HEAT POWERED DUPLEX STIRLING COOLER FOR HEAVY DUTY TRUCK REFRIGERATION IS PLANNED. THE MACHINE WILL EXPLOIT A PORTION OF THE WASTE HEAT ENERGY CONTAINED IN THE DIESEL ENGINE EXHAUST TO POWER THE STIRLING ENGINE COMPONENT OF THE REFRIGERATOR. A UNIQUE DESIGN PROVIDES HIGH… more
Abstract:AN INNOVATIVE HIGH PERFORMANCE WINDOW EDGE AND FRAME DESIGN WILL BE DEVELOPED. THE PROJECT OBJECTIVES ARE TO DEMONSTRATE THAT THE DESIGN IS REASIBLE FROM HEAT TRANSFER, STRUCTURAL, AND ECONOMIC PERSPECTIVES. ADDITIONALLY, THE DESIGN MUST BE COMPATIBLE WITH STANDARD ARCHITECTURAL AND BUILDING… more
Abstract:CURRENT SAMPLE SPINNERS FOR NMR SPECTROSCOPY ARE GENERALLY LIMITED IN ROTATIONAL SPEED TO ABOUT 10 KHZ. RESEARCHERS EXPECT TO DEMONSTRATE A SAMPLE SPINNER THAT IS CAPABLE OF STABLE OPERATION AT SPEEDS TO 40 KHZ. THE DEVICE WILL SIGNIFICANTLY IMPROVE THE RESOLUTION CAPABILITY OF SOLID STATE NMR BY… more
Abstract:IMPROVEMENT IN THE QUALITY, SIZE, AND COST OF INDIUM PHOSPHIDE (INP) SINGLE CRYSTALS IN NECESSARY IN ORDER TO REALIZE THE HIGH PERFORMANCE BENEFITS OF INP-BASED MICROWAVE AND MILLIMETER WAVE MONOLITHIC INTEGRATED CIRCUIT TECHNOLOGY. TO MEET THIS NEED, RESEARCHERS ARE DEVELOPING A NOVEL MODIFICATION… more
Abstract:THIS PHASE I PROJECT ADDRESSES THE NEED FOR ROBUST, CONTAMINATION-FREE CIRCULATORS TO DISTRIBUTE LIQUID OR SUERCRITICAL HELIUM THROUGH SUPERCONDUCTING MAGNETS. AN ADVANCED CENTRIFUGAL MACHINE SUITABLE FOR LIQUID OR GAS CIRCULATION AT CRYOGENIC TEMPERATURES WILL BE DEVELOPED. THE MACHINE INCORPORATES… more
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