Award Data

THIS PROPOSAL COVERS THE DEVELOPMENT OF A CRYOCOOLER WITH A REFRIGERATION CAPACITY OF 0.75 WATT AT 20 KELVIN. THE CRYOGENIC UNIT WILL HAVE A VOLUME OF LESS THAN 16 CM3, AND CAN PROVIDE COOLING FOR 5 MINUTES AFTER A COOLDOWN PERIOD OF LESS THAN 20 SECONDS. THE CRYOCOOLER USES A NEW FABRICATION TECHNIQUE THAT LEADS TO A HIGH RELATIVE EFFICIENCY WITH A MINIMUM VOLUME.

MEASUREMENT OF FREQUENCY MODULATION ON PULSED SIGNALS IS A MATTER OF MAJOR CONCERN WHEN MANUFACTURING A PULSED SIGNAL SOURCE WITH SPECIFIED MODULATION CHARACTERISTICS. THESE MEASUREMENTS ARE ALSO IMPORTANT IN FIELD APPLICATIONS TO VERIFY PULSED SIGNAL PERFORMANCE OR TO DETERMINE THE NATURE OF FREQUENCY MODULATION. CONVENTIONAL DISCRIMINATOR TECHNIQUES ARE NOT SUITABLE FOR MEASURING FREQUENCY MODUL ...

THE NEED FOR SOPHISTICATED DATABASE MANAGEMENT SUPPORT IN NAVY COMMAND AND CONTROL SYSTEMS CONTINUES TO GROW. HOWEVER, CONVENTIONAL DATABASE MANAGEMENT STRATEGIES AND TECHNIQUES ARE NOT CURRENTLY MEETING THE UNIQUE NEEDS OF NAVY DECISION SUPPORT SYSTEMS, WHICH REQUIRE EXTENDED CAPABILITIES FOR HANDLING UNCONVENTIONAL DATA FORMATS AND TEMPORAL INFORMATION. IN THIS PROPOSAL, AQUIDNECK MANAGEMENT ASS ...

MODERN GENERAL PURPOSE VISCOUS FLOW CFD MODELING PROGRAMS WILL BE APPLIED TO DEVELOP METHODS FOR REDUCING THE VISIBLE WAKE PRODUCED BY SUBMARINES AT PERISCOPE DEPTH. DR. S. PANTKAR WILL ASSIST IN THE EFFORT. TECHNIQUES TO BE EXAMINED INCLUDE IMPROVE FAIRING DESIGN, FLOW MODIFICATION DEVICES, AND POLYMER ADDITION TO ALTER FLUID PROPERTIES.

ICE FORMATION ON NAVAL VESSELS IS A SERIOUS PROBLEM. THE ICE IS FORMED BY OCEAN SPRAY WHEN THERE IS AN APPROPRIATE COMBINATION OF STRONG WINDS AND LOW AIR TEMPERATURE. IT CAN ACCUMULATE TO SUCH AN EXTENT THAT IT CAN PLACE THE VESSEL IN DANGER OF CAPSIZING. ONE POSSIBLE SOLUTION IS TO USE HEAT PIPE TECHNOLOGY DEICE THE VESSEL. IN THIS METHOD, THE CRITICAL SECTIONS OF THE NAVAL VESSELS ARE EQUIPPED ...

COMPARED TO CONVENTIONAL TURBOJET/TURBOFAN ENGINES, THE SUPERSONIC COMBUSTION RAMJET (SCRAMJET) IS A MORE EFFICIENT PROPULSION SYSTEM AT HIGH FLIGHT MACH NUMBERS AND ALTITUDE. HOWEVER, THERE ARE INSUFFICIENT DATA TO ASSESS ENGINE CYCLE PAYOFFS. IT IS PROPOSED TO USE A VALIDATED COMPUTATIONAL FLUID DYNAMICS (CFD) CODE TO PRODUCE THE NEEDED DATA. IN PHASE I, AN EXISTING FAVRE-AVERAGED, COMPRESSIBLE, ...

CONAX HAS EXTENDED THE EXPERIENCE GAINED IN 14 YEARS OF ENGINEERING AND MANUFACTURING ELECTRICAL PENETRATORS TO SEALING DEVICES FOR FIBER OPTICS. FIBER OPTIC PENETRATORS WITH A TOTAL OPTICAL LOSS OF 0.3 DB AT 10,000 PSI HAVE BEEN DEMONSTRATED. AN INNOVATIVE USE OF COMPRESSIVE SEALING IS PROPOSED TO DEVELOP A PENETRATOR FOR SINGLE MODE FIBER WHICH IS MORE RUGGED AND HAS A WIDER OPERATING TEMPERATUR ...

AN OBJECTIVE OF THIS PROJECT WILL BE THE DEVELOPMENT OF NEW AND NOVEL THERMOPLASTIC POLYMER ALLOYS WITH HIGH RESISTANCE TO ALL KNOWN HAZARDOUS CHEMICALS. A FURTHER OBJECTIVE WILL BE TO CROSSLINK INDIVIDUAL POLYMERS IN THESE ALLOYS TO FORM NON-MELTING INTERPENETRATING POLYMER NETWORKS (IPN'S) WHICH WILL EXHIBIT GREATER RESISTANCE TO HAZARDOUS CHEMICALS THAN THE THERMOPLASTIC ALLOYS FROM WHICH THEY ...

THE PRIMARY OBJECTIVES OF THIS RESEARCH PROGRAM IN PHASE I ARE TO DEVELOP CORROSION DATA ON A SERIES OF SIC/AL AND GR/AL METAL MATRIX COMPOSITES. SINCE THESE MATERIALS SHOW SIGNIFICANT POTENTIAL FOR USE IN NAVAL APPLICATIONS, THEIR CORROSION RESISTANCE WILL BE EVALUATED IN DIFFERENT KINDS OF MARINE EXPOSURES. DATA FROM LONGTERM EXPOSURES, SHORT-TERM ACCELERATED ELECTROCHEMICAL TESTS, AND METALLURG ...

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