Award Data

THE ACTIVE SONARS TYPICALLY USED ON SUBMARINES OPERATE AT FREQUENCIES HIGH ENOUGH TO BE DIFFICULT IF NOT PRESENTLY IMPOSSIBLE TO MODEL ACCURATELY WITH FINITE ELEMENT ANALYSIS. LIKEWISE BEAM AND CYLINDER MODELS PROVIDE INADEQUATE REPRESENTATIONS OF THE HIGH FREQUENCY BEHAVIOR OF PLATE AND FRAME VIBRATIONS. THE APPLICATION OF THE AARC STATISTICAL ENERGY ANALYSIS PROGRAM WHICH INCLUDES BENDING, LONGI ...

A SUBMARINE MAST OR PERISCOPE WHICH PIERCES THE FREE SURFACE GENERATES A VISUALLY OBSERVABLE WAKE ON THE FREE SURFACE WHICH RENDERS THE SUBMARINE VULNERABLE TO DETECTION. IT IS PROPOSED TO INVESTIGATE THE FEASIBILITY OF REDUCING THIS WAKE BY A COMBINATION OF ACTIVE AND PASSIVE FLOW CONTROL DEVICES ATTACHED TO THE MAST OR PERISCOPE. A DEVICE SIMILAR TO A BULBOUS BOW ON SHIPS WILL BE USED TO REDUCE ...

IT IS PROPOSED THAT A COMPUTER CODE BE DEVELOPED WHICH WILL LOCATE AND DEDUCE THE SIGNATURE OF LOW FREQUENCY TRANSIENTS BY SPARCE SONOBUOY ARRAYS. IT WILL BE ASSUMED THAT WE KNOW THE PROPERTIES OF THE PROPAGATING MEDIUM AND THAT IT IS HORIZONTALLY STRATIFIED. THE ALGORITHM WILL HAVE FOUR PARTS: 1) A DETECTION SCHEME, 2) A CORRELATION ROUTINE TO DETERMINE TIME DELAYS, 3) A ROUTINE TO DETERMINE LOCA ...

THE LONG-TERM OBJECTIVE OF THIS STUDY IS TO MAKE AVAILABLE WEARABLE TACTILE AIDS WITH EIGHT OR MORE CHANNELS AND WITH SUITABLE PERFORMANCE, SIZE, AND CONVENIENCE CHARACTERISTICS TO MEET THE REQUIREMENTS OF THE MARKET. THE IMMEDIATE TASK IS TO ASSESS THE POTENTIAL OF A SPECIFIC TYPE OF VIBRATOR ELEMENT FOR USE IN AN INTEGRATED STIMULATOR ARRAY CONSISTINGOF EIGHT OR MORE VIBRATORS. ADDITIONALLY, A Z ...

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THE OBJECTIVE OF THE PROPOSED RESEARCH IS TO LIMIT VOLTAGE DELAY, ANODE CORROSION DURING INTERMITTENT USAGE AND TO INCREASE THE CURRENT CAPABILITY AND CAPACITY OF LI/SOCL(2) CELLS THROUGH THE USE OF NEW ELECTROLYTE SALTS. THE PRINCIPLES USED WILL BE THOSE WHICH HAVE SUCCEEDED IN THE PAST, NAMELY, BY LIMITING THE CONCENTRATION OF THE ELECTROLYTE SALT AND BY USING THE LITHIUM SALTS OF LARGE ANIONS W ...

THE OBJECTIVE IS TO INCREASE THE CAPACITY AND SAFETY OF THE LITHIUM/ LIALCL4.6SO2/CARBON RECHARGEABLE CELL BY ALTERING THE ELECTROLYTE AND THE POSITIVE ELECTRODE, AND BY IMPROVING THE METHODS CURRENTLY EMPLOYED FOR MAKING THE ELECTROLYTE. ALUMINUM IS REMOVED AS DISCHARGE PROCEEDS, SINCE ONE OF THE PRODUCTS IS AN INSOLUBLE COMPLEX BETWEEN THE ALUMINUM, REDUCED SO2, AND THE CARBON SURFACE. THE DILEM ...

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