Award Data

THE PROPOSED PHASE I EFFORT WILL DEVELOP AN ACOUSTIC CHANNEL A/D CONVERTER, AND DIGITAL DECIMATION FILTER. THE ACOUSTIC CHANNELBIT WILL HAVE A DYNAMIC RANGE OF 120 DB. DEVELOPMENT COSTS WILL BE LESSENED BY USING A HYDROPHONE PREVIOUSLY DEVELOPED. THIS HYDROPHONE HAS A 144 DB DYNAMIC RANGE. THE CHANNEL ELECTRONICS WILL BE COMPOSED OF COMMERCIALLY AVAILABLE COMPONENTS. A PROTOTYPE CHANNEL WILL BE BU ...

N/A

REFRIGERATION SYSTEMS FOR SHIPBOARD USE MUST BE EFFICIENT, MECHANICALLY SIMPLE, RELIABLE, SAFE, SMALL, AND LIGHTWEIGHT. CURRENT SYSTEMS MEET ALL OF THESE CRITERIA BUT USE CHLOROFLUROCARBONS (CFCS). THE MANUFACTURE OF CFCS IS BEING PHASED-OUT BECAUSE OF THEIR OZONE-DEPLETION POTENTIAL. TDA RESEARCH, INC. PROPOSES A SAFE, NON-TOXIC, NON-FLAMMABLE, NON-OZONE DEPLETING REFRIGERANT WHICH IS EASILY HAND ...

THIS PROPOSAL DESCRIBES A PROTOTYPE SIMULATION MODEL OF THE SHIPBUILDING PROCESS THAT PREDICTS THE COST AND SCHEDULE IMPACT (INCREASE, DECREASE, NO CHANGE) OF INDIVIDUAL SHIP CONSTRUCTION CONTRACT CHANGES. SUCH CONSTRUCTION CONTRACT CHANGES INCLUDE ADDITIONS, DELETIONS, MODIFICATIONS, INTERRUPTION AND ACCELERATION OF WORK PROCESSES OR MATERIALS. THE MODEL CLEARLY IDENTIFIES THE CORE COST OF EACH C ...

N/A

AT PRESENT NAVAL SHIP STRUCTURES ARE DESIGNED ACCORDING TO DETERMINISTIC CRITERIA. THESE CRITERIA SOMETIMES LEAD TO OVERDESIGN OR, IN SOME CASES, TO UNCONSERVATIVE DESIGN, BECAUSE THEY DO NOT ACCOUNT FOR SOME CRITICAL FACTORS SUCH AS UNCERTAINTIES IN ANALYSIS, STRENGTH, AND LOADS. THIS IS PARTICULARLY TRUE FOR THE DESIGN OF ADVANCED UNCONVENTIONAL HULLFORMS, FOR WHICH SUCH FACTORS ARE VERY IMPORTA ...

A SYSTEM IDENTIFICATION TECHNICAL IS PROPOSED FOR NON-DESTRUCTIVE TEST TO DETECT UNBOUNDS IN LARGE BONDED COMPONENTS. THE TECHNIQUE USES THE SYSTEM'S TIME RESPONSE DATA DUE TO RANDOM INPUT EXCITATION. SYSTEM'S EIGENVALUES AND EIGENVECTORS ARE RETRIEVED FROM THE TIME RESPONSES AND USED FOR THE CONSTRUCTION OF ACCURATE SYSTEM MATHEMATICAL MODELS. SYSTEM'S CHANGE DUE TO CRACKS, VOIDS, UNBONDS BETWEEN ...

A UNIQUE BLUE/GREEN HIGH POWERED LASER SYSTEM FOR TACTICAL SUBMARINE COMMUNICATIONS IS PROPOSED. THE PROPOSED SYSTEM COMBINES THE CONCEPTS OF DOUBLE BEAMS MODULATION (DBM) AND OPTOELECTRONI HETERODYNE (OEHD) HAS MANY ADVANTAGES OVER THE CURRENT INCOHERENT OPTICAL SYSTEM (BECAUSE OF THE SPATIAL INCOHERENT CAUSED BY EXTREME TURBIDITY, THE CONVENTIONAL COHERENT DETECTION IS IMPOSSIBLE) PROVIDES THE N ...

THE PRIMARY OBJECTIVES OF THIS RESEARCH PROGRAM IS TO DEVELOP A WORKING "NAVY OCEANOGRAPHIC ELECTRONIC LIBRARY SYSTEM" (NOELS) FOR USE BY THE NAVY OCEANOGRAPHIC COMMUNITY. THE SYNEX PROPOSAL IS UNIQUE INTHAT NOELS WILL BE PROTOTYPED AND DEMONSTRATED IN PHASE I. IN PHASE II, NOELS WILL BE MORE FULLY DEVELOPED USING DEMONSTRATIONS OF ENHANCEMENTS AT PREDETERMINED MILESTONES. BY THE END OF PHASE II, ...

THE MAIN GOAL OF THE PHASE I EFFORT IS TO DEVELOP A PRELIMINARY DESIGN FOR A WIDEBAND MONOPULSE SONAR SYSTEM USEFUL IN ANALYZING BACKSCATTERED RETURNS FROM COMPLEX OBJECTS IN ORDER TO LOCALIZE THE SCATTERING CENTERS OF THE OBJECTS. IN DEVELOPING THE DESIGN, AN EVALUATION WILL FIRST BE MADE OF THE COST AND PERFORMANCE BENEFITS ASSOCIATED WITH USING PVDF BASED CONTINUOUS ARRAYS IN PLACE OF THE MORE ...