Award Data

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THIS PROPOSAL WILL DEMONSTRATE (IN 2" TO 4" SIZE), A NOISE REUCING TRIM THAT CAN BE UTILIZED IN ROTARY CONTROL/ON-OFF BALL VALVES. THIS VALVE TRIM ADDRESSES NOISE AT THE SOURCE. THE BASIC DESIGN HAS A VARIABLE IMPEDENCE TRIM TO CAUSE A HIGH IMPEDENCE AT LOW ANGLES OF OPENING AND LOW IMPEDENCE (VERY LITTLE FLOW RESTRICTION) AT LARGE OPENING ANGLES. IT IS AN IDEAL VALVE FOR PRESSURIZATION/DE-PRESSUR ...

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THE SEEMINGLY IMPOSSIBLE TASK OF PRODUCING ONE-HALF OF A MEGAWATT OF ACOUSTIC POWER UNDERWATER AT A FREQUENCY OF 5 HZ IS ADDRESSED. THE EXPLOITATION OF THE RECENT INTRODUCTION OF NEW RARE EARTH PERMANENT MAGNET MATERIALS, THE CONCEPT OF USING A FLEXURAL DISC RADIATOR, AND THE RECENT CULMINATION OF TWO YEARS OF ELECTRODYNAMIC TRANSDUCER DEVELOPMENT IS PROPOSED. THE USE OF MATHEMATICAL MODELING, EXP ...

MOVING-COIL TRANSDUCERS ARE USUALLY ASSOCIATED WITH LOW POWER, LOW EFFICIENCY, BROADBAND AND VERY LOW FREQUENCY APPLICATIONS. THE RECENT INTRODUCTION OF RARE EARTH PERMANENT MAGNETIC MATERIALS HAVING HIGH ENERGY DENSITIES AND THE RECENT DEVELOPMENT OF BETTER DESIGN TECHNIQUES SIGNIFICANTLY IMPROVE EFFICIENCY, POWER HANDLING ABILITY, AND HIGH FREQUENCY OPERATION. THE APPLICATION OF THESE IMPROVEMEN ...

A SERIES OF BROADBAND HF ANTENNA STRUCTURES WAS ANALYZED FOR POTENTIAL SHIPBOARD APPLICATIONS. INCLUDED WERE ALTSHULTER INSERTIONS, DIELECTRIC LOADING, MULTIPLE REACTIVE INSERTIONS, ACTIVE TRANSMIT ANTENNA, AND MULTIPLE TRANSMISSION LINES. OBJECTIVES INCLUDE 3 TO 1 MAXIMUM VSWR OVER THE 2 TO 30 MHZ BAND, OMNI-DIRECTIONAL, MEET SEVERE ENVIRONMENTAL SPECIFICATIONS, HIGH EFFICIENCY, AND OPERATE WITH ...

THE INTENTION IS TO INVESTIGATE THE SHIP MOTION EFFECTS ON ROBOT DYNAMICS AND EQUIPMENT LIFE. THE ON-BOARD ROBOT IS EQUIVALENT TO A STATIONARY ROBOT WITH BASE EXCITATION DUE TO SHIP MOTION. THE EXCITA-TION AT THE ROBOT BASE WILL BE MONITORED EITHER BY PLACING GYROSCOPES AND ACCELEROMETERS AT THAT POSITION, OR BY ASSUMING THE SHIP IS A RIGID BODY AND PLACING GYROSCOPES AND ACCELEROMETERS ON THE SHI ...

THE EMERGENCE OF ARTIFICAL INTELLIGENCE AND EXPERT SYSTEMS TECHNOLOGY FROM THE LABORATORY ENVIRONMENT INTO GENERAL PRACTICE OFFERS A PROMISING APPROACH FOR THE DEVELOPMENT OF MANUFACTURING APPLICATIONS. MANUFACTURING SYSTEMS BUILT WITH THIS TECHNOLOGY WILL BE PARTICULARLY VALUABLE FOR SECOND AND THIRD TIER SUBCONTRACTORS IN THE DEFENSE INDUSTRY, BECAUSE THEY WILL ALLOW THE CAPTURE AND TRANSMISSION ...

AN/PSC-2 DIGITAL COMMUNICATION TERMINAL (DCT) REQUIRES A POWER CONVERTER THAT CONVERTS 115 VAC TO 8 VDC FOR ABOARD SHIP USAGE. THE HIGH TEMPERATURE AND HUMIDITY CONDITION ON THE SHIP, COMBINING WITH THE POSSIBLE SALTY ATMOSPHERE CAN GREATLY LOWER THE RELIABILITY OF ANY ELECTRONIC DEVICE BECAUSE OF THEIR CORROSIVE ACTION ON THEM. THE PROPOSED CONVERTER IS BELIEVED TO SURVIVE THE HARSH ATMOSPHERE CO ...