Award Data

THIS PROJECT WILL DEFINE A COMPUTER SIMULATION CAPABILITY THAT CAN SYNTHESIZE CLOUD CLUTTER AND SEA RADIANCE SCENES MEASURED BY SHIPBORNE IRST SENSORS. THE CAPABILITY WILL BE AN EXPANSION OF ARI'S EXISTING AERIE (AERODYNE INFRARED EARTH) IR BACKGROUND RADIANCE SIMULATION CODE, DEVELOPED TO SYNTHESIZE INFRARED SCENE RADIANCES MEASURED BY IMAGING SENSORS. DETAILS OF THE PHYSICAL PROPERTIES OF THE CL ...

N/A

N/A

THE SUCCESSFUL GROWTH OF GAAS ON SILICON SUBSTRATES USING DOUBLE SELECTIVE LIQUID EPITAXIAL (DSLE) PROCESS HAS RECENTLY BEEN ACCOMPLISHED. THESE RESULTS SET THE STAGE FOR THE DEVELOPMENT OF AN EXTREMELY USEFUL MATERIAL--LARGE PLANAR WAFERS OF SMOOTH GAAS ON SILICON. DOUBLE SELECTIVE LIQUID PHASE EPITAXY COULD SIGNIFICANTLY REDUCE THE PROBLEMS CAUSED BY LATTICE MISMATCH AND DIFFERENTIAL THERMAL EXP ...

N/A

N/A

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 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 ...