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A FEASIBILITY STUDY ON THE DEVELOPMENT OF A STOICHIOMETRIC DIESEL ENGINE IS PROPOSED USING THE THERMAL IGNITION COMBUSTION CHAMBER. THE ADIABATIC DIESEL ENGINE WITHOUT WATER OR AIR COOLING ALLOWS THE THERMAL IGNITION CHAMBER TO STORE HEAT DURING COMBUSTION AND RELEASE THE ENERGY FOR IGNITION IN THE FOLLOWING CYCLE. INJECTION OF FUEL ON TO 1800-2000 DEG. F WALL TEMPERATURE WILL PREPARE THE FUEL FOR ...

CERAMATEC HAS CONDUCTED EXPLORATORY RESEARCH AND DEVELOPMENT ON MONOLITHIC AND COMPOSITE MATERIALS IN THE ZRB2 AND TIB2 SYSTEMS AND HAS OBTAINED VERY ENCOURAGING RESULTS WITH SEVERAL PROPRIETARY COMPOSITIONS/CONSTRUCTIONS. THE AVERAGE STRENGTH OF A BASELINE TIB2 COMPOSITION WAS MEASURED AT 877 MPA (127.3 KSI). COMPOSITE STRUCTURESWITH DISCONTINUOUS REINFORCEMENT HAD STRENGTHS IN THE RANGE 400-600 ...

THE OVERALL OBJECTIVE OF THIS PROJECT IS TO DEMONSTRATE THE SUCCESSFUL FABRICATION AND DENSIFICATION OF CERAMIC MATRIX COMPOSITES FORMED BY INJECTION MOLDING. TO ACCOMPLISH THIS OBJECTIVE, A DESIGNED TEST MATRIX WILL BE DEVELOPED THAT WILL SYSTEMATICALLY INVESTIGATE THE KEY INJECTION MOLDING AND DEBINDING PARAMETERS SUCH AS BINDER COMPOSITION, SOLIDS RATIO, MOLDING CONDITIONS, DEBINDING CONDITIONS ...

ENZYMES OF INTEREST IN CHEMICAL/BIOLOGICAL DEFENSE, PARTICULALY OXIDASES AND PEROXIDASES, WOULD BE MORE USEFUL IF THEY COULD WITHSTAND HIGH TEMPERATURES AND HAD A LONGER SHELF LIFE. THERMALLY LABILE FORMS NOW AVAILABLE COULD BE SYNTHETICALLY STABILIZED BUT THIS WOULD BE EXPENSIVE. MICROORGANISMS EXISTING IN HIGH TEMPERATURE HABITATS SURVIVE SUCH CONDITIONS BECAUSE THEY PRODUCE HEAT STABLE ENZYMES. ...

THE OBJECTIVE OF PHAE I IS TO DETERMINE BY AN ANALYTICAL STUDY THE OPTIMUM DESIGN APPROACH, OR APPROACHES, FOR SOLID-STATE ELECTRICAL FAULT CURRENT LIMITERS FOR THE CURRENT RANGE OF 15 TO 5000 AMPERES. THE ANALYTICAL TRADEOFF STUDY WILL INCLUDE THE FOLLOWING TASKS: 1) DEFINITION OF CURRENT LIMITER REQUIREMENTS, 2) DEFINITION OF TRADEOFF ANALYSIS CRITERIA, 3) DEFINITION OF CANDIDATE CURRENT LIMITER ...

THIS PROPOSAL IS TO DEMONSTRATE FEASIBILITY OF INSERTION OF SIALIC ACID MOLECULES INTO MEMBRANES OF LIPOSOMES CARRYING HEMOGLOBIN. THE LIPOSOMES MAY BE PROVIDED BY NAVY CONTRACTORS OR PREPARED BY OFFEROR ACCORDING TO CONTRACTORS' SPECIFICATIONS FOR FOMULATION. THE ADDED SIALIC ACID WILL PROTECT THE LIPOSOMES FROM CLEARANCE BY THE RETICULOENDOTHELIAL SYSTEM AND THEREBY INCREASE THE RESIDENCY TIME O ...

IN ORDER TO USE THE NEW CERAMIC SUPERCONDUCTOR MATERIALS IN MANY APPLICATIONS, THE NORMALLY BRITTLE MATERIALS MUST BE FORMED INTO WIRES. THIS PROPOSAL SUGGESTS A WET CHEMISTRY TECHNIQUE FOR FORMING THE SUPERCONDUCTOR COMPOUND INTO A WIRE, WHICH WILL THEN BE COATED WITH A METAL JACKET TO PROTECT THE WIRE FORM PHYSICAL ABUSE AND ENVIRONMENTAL DEGRADATION. BECAUSE THE COATING PROCESS WILL BE ESSENTIA ...

CURRENT METHODS USED TO MEASURE STRAIN AT HIGH TEMPERATURES DEPEND ON UNDESIRABLE ATTACHMENTS, EXTENSIONS, OR INDENTATIONS OF THE TEST SAMPLES. THIS STUDY WILL INVESTIGATE THE USE OF NEW TECHNOLOGY TO APPLY HIGH TEMPERATURE COATING MARKS TO TEST SAMPLES. THESE APPLIED MARKS WILL ACT AS A REFERENCE OR GAUGE FOR OPTICAL STRAIN MEASUREMENT. MATERIALS INCLUDING REFRACTORY METALS AND CERAMICS WILL BE A ...

A ONE-MILLION POUND COMPRESSION REACTION LOADER IS REQUIRED TO OPERATE IN CONJUNCTION WITH THE WATERWAYS EXPERIMENT STATION 6-KBAR TRIAXIAL TEST DEVICE. TERRA TEK HAS DESIGNED AND CONSTRUCTED SIMILAR TEST SYSTEMS FOR IN-HOUSE TESTING. TERRA TEK HAS ALSO DEVELOPED UNIQUE COMPUTER CONTROL CODES SPECIFICALLY FOR ROCK MECHANICS APPLICATIONS. THE PROPOSED PHASE I EFFORT IS TO DESIGN A COMPRESSION REACT ...

THE NAVY IS DEVELOPING METHODS TO DETERMINE THE SIZE AND TYPE OF DEFECTS IN HELICOPTER GEARBOXES. WITH THIS KNOWLEDGE A BETTER UNDERSTANDING OF THE FATIGUE-CRACK PROPAGATION CHARACTERISTICS OF THE GEARS AND BEARINGS WILL BE POSSIBLE AND ENHANCE THE ACCURACY IN PREDICTING THE FATIGUE LIFE. THE PURPOSE OF THIS PROPOSAL IS TO UNDERTAKE THIS STEP BY INVESTIGATING THE THREE-DIMENSIONAL STRESS DISTRIBUT ...