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BOTH ATMOSPHERIC AND HIGH-ALTITUDE NUCLEAR EXPLOSIONS WILL PRODUCE MAGNETIC SIGNALS THAT ARE DETECTABLE OVER VERY LARGE DISTANCE. AN UNDERGROUND EXPLOSION WILL ALSO PRODUCE A MAGNETIC SIGNAL, BUT IT IS DETECTABLE AT MUCH SMALLER DISTANCE. THIS IS BECAUSE THE UNDERGROUND FIREBALL IS INERTIALLY TAMPED BY THE MORE DENSE EARTH, AND BECAUSE THE LOW FREQUENCY ELECTROMAGNETIC WAVE IS STRONGLY ATTENUATED ...

WITH THE EMERGENCE OF THE COMPUTER AS A BASIC TOOL IN THE WORKPLACE, TYPING IS AN ESSENTIAL VOCATIONAL SKILL. PEOPLE WHO ARE UNABLE TO FULLY UTILIZE STANDARD KEYBOARDS HAVE SIGNIFICANLY LOWER TYPING RATES. ABBREVIATION EXPANSION IS A POWERFUL TECHNIQUE FOR SIGNIFICANTLY INCREASING THIS RATE. CURRENT EXPANDERS RESTRICT THEMSELVES TO FIXED ABBREVIATION SCHEMES TO ACHIEVE ACCEPTABLE PERFORMANCE. THIS ...

DEVELOPMENT AND APPLICATION OF A NOVEL CONCEPT TO MEASURE PENETRATOR INDUCED SHOCK LOADS IN CERAMIC ARMOR IS PROPOSED.EXPLICIT TIME RESOLVED DATA REQUIRED TO UNDERSTAND PENETRATION PHENOMENOLOGY WILL BE OBTAINED USING A NEW PIEZOELECTRIC POLYMER SHOCK GAUGE. A UNIQUE EXPERIMENTAL APPROACH COMBING THE NONOBTRUSIVE SHOCK SENSOR INTO A CONFIGURATION THAT CAN BE FIELDED IN LONG ROD PENETRATOR BALLISTI ...

IT IS PROPOSED THAT THE BALLISTIC PERFORMANCE OF TIB2 CERMAIC ARMOR TILES BACKED UP BY A VARIETY OF LIGHTWEIGHT SUPPORT-PLATES BE INVESTIGATED BY 1MEV FLASH X-RAY EQUIPMENT DURING PENETRATION, AND BY MACROSCOPIC AND MICROSCOPIC OBSERVATIONS OF RECOVERED TARGETS. THE SUPPORT-PLATE TEST MATRIX INCLUDES TWO MATERIALS (A STRUCTURAL ALUMINUM ALLOY AND A CERAMIC REINFORCED ALUMINUM MATRIX COMPOSITE), TW ...

TO UNDERSTAND BETTER HOW LAMINATED CERAMIC ARMOR PERFORMS, IT IS PROPOSED TO INVESTIGATE THE EFFECT OF THE IMPEDANCE MISMATCH AND INTERLAYER BOND STRENGTH (BETWEEN AI(2)0(3) REINFORCED ALUMINUM MATRIX COMPOSITES AND TIB(2)) ON STRESS WAVE PROPAGATION AND PENETRATION PHENOMENOLOGY DUE TO LONG ROD IMPACT. LANXIDE'S UNIQUE PROCESSING TECHNOLOGIES WILL BE USED TO FORM A STRONG METALLURGICAL BOND AT TH ...

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CURRENT CERAMIC FIBERS LOSE STRENGTH RAPIDLY ABOVE 1000-1200 C AND HAVE VERY LOW CREEP RESISTANCE THUS LIMITING THEIR APPLICATIONS IN COMPOSITES FOR MANY ADVANCED MILITARY SYSTEMS. RECENT WORK HAS DEMONSTRATED THAT GRAPHITE FIBER (3-14) TOWS CAN BE CONVERTED TO SIC WHICH RETAINS NEARLY 100% OF THEIR STRENGTH TO 1500 C AND HAVE EXCELLENT CREEP RESISTANCE TO THE SAME TEMPERATURE. PRELIMINARY INVESTI ...

MISSION RESEARCH CORPORATION PROPOSES A NOVEL SEMICONDUCTOR LASER FOR TACTICAL AIRBORNE LASER COMMUNICATIONS. THE APPROACH INVOLVES A VERTICAL CAVITY, SURFACE EMITTING LASER WITH A RESONANT PERIODIC GAIN (RPG) MEDIUM WHICH IS A UNIQUE QUANTUM WELL CONFIGURATION.

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