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THE NAVY HAS IDENTIFIED A NEED FOR AN IMPROVED TECHNOLOGY TO PROVIDE CONTROL OF PARTICULATE AND GASEOUS CONTAMINANTS TO PROTECT SHIPBOARD PERSONNEL AND EQUIPMENT. THE NEW SYSTEM SHOULD BE A NON-BARRIER TYPE FILTRATION DEVICE WITH THE FOLLOWING CHARACTERISTICS: VERY LOW PRESSURE DROP, REQUIRE LITTLE MAINTENANCE, BE INSENSITIVE TO CHANGES IN AMBIENT CONDITIONS SUCH AS TEMPERATURE, PRESSURE, AND MOIS ...

CONCENTRATION FLUCTUATION MEASUREMENTS OF A TRACER GAS CAN PROVIDE INFORMATION REGARDING THE DISPERSION AND TRANSPORT OF AN AIR MASS. THERE HAS BEEN A DEARTH OF SUCH DATA BECAUSE OF A SHORTAGE OF INEXPENSIVE, SIMPLE-TO-OPERATE INSTRUMENTATION MEETING THE NECESSARY REQUIREMENTS OF FAST RESPONSE, HIGH SENSITIVITY, AND STABILITY. IT IS THE GOAL OF THIS RESEARCH PROGRAM TO DEVELOP AN INEXPENSIVE, HIGH ...

THIS PROJECT PROPOSES AN ADVANCED COMPOSITE, MODULAR ENCLOSURE FOR FUTURE NAVY INTERCOOLED RECUPERATED (ICR) GAS TURBINE ENGINES. THE ENCLOSURE ENVISIONED BY ADVANCED COMPOSITE TECHNOLOGY, INC (ACT) WILL BE COMPOSED OF AN OUTER STRUCTURAL COMPOSITE SHELL (SCS) WITH AN INTERNAL FLEXIBLE PROTECTIVE SHROUD (PS). THE MODULAR CONCEPT WILL ALLOW EASY REMOVAL AND ACCESS TO THE ENGINE FOR INSPECTION, MAIN ...

THIS PROJECT WILL PROVIDE THE NAVY WITH A LOW-COST FIBER OPTIC ENHANCEMENT TO THE "STANDARD" COMPOSITE PROPULSION SHAFTS IT PROPOSES FOR FUTURE SHIPS. THIS ENHANCEMENT WILL PROVIDE THREE SPECIFIC ADVANTAGES. FIRST, IT WILL PROVIDE A MEANS OF QUALITY CONTROL THROUGH THE SCIENTIFIC MONITORING OF THE THICK WALL COMPOSITE DURING MANUFACTURE. SECOND, IT WILL PROVIDE A MEANS OF "REAL-TIME" MONITORING OF ...

THE USE OF RECTANGULAR EXHAUST NOZZLES FOR AIRCRAFT CONFIGURATIONS OFFERS SOME INTERESTING POSSIBILITIES IN THE AREA OF FLOW MANIPULATION IN ORDER TO ENHANCE THE MIXING OF THE HOT EXHAUST PLUME WITH THE SURROUNDING COOL AIR. THIS PROPOSAL SUGGESTS THAT THE MANIPULATION AND PLACEMENT OF STREAMWISE VORTICITY IN THE FLOWFIELD WILL SERVE TO SIGNIFICANTLY INCREASE THE MIXING OF THE EXHAUST PLUMES. THE ...

USE OF DISTRIBUTED COMPUTING IN NAVY SYSTEMS IS INCREASING. DISTRIBUTED OPERATING SYSTEMS (DOS) PROVIDE THE ADVANTAGES OF DISTRIBUTED COMPUTING TO USER APPLICATIONS. REQUIREMENTS FOR REALTIME PERFORMANCE, RELIABILITY/FAULT TOLERANCE, AND SECURITY MUST BE ADDRESSED BY A DOS. APPLICATION OF DOS TECHNOLOGY IS A COMPLICATED TASK. A KNOWLEDGE-BASED ASSIST WILL FACILITATE THE USE OF DISTRIBUTEDOPERATING ...

A NEW PROCESS IS PROPOSED TO SYNTHESIZE PURE SPHERICAL BORONPOWDERS COATED WITH EITHER TITANIUM OR ZIRCONIUM FOR USE IN ENERGETIC PROPELLANTS AND EXPLOSIVES. THE PROCESS IS BASED ON A PROCESS PREVIOUSLY DEVELOPED BY AERO-CHEM TO PRODUCE PHOTOVOLTAIC SILICON. IT INVOLVES THE REACTION OF VAPOR PHASE SODIUM WITH BORON TRICHLORIDE AND TITANIUM (OR ZIRCONIUM) CHLORIDE AND EXPANSION OF THE PRODUCTS T TH ...

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