Award Data

THE PROPOSED EFFORT WILL DEVELOP AN INTEGRAL STARTER/GENERATOR FOR SMALL TURBO JET ENGINES. THE STARTER CAN BE POWERED BY A 28 VDC BATTERY. THE LENGTH OF THE STARTER WILL BE 2.5 - 3" AND THE 0.D. WILL BE 2.5". THE STARTER WILL BE ABLE TO GENERATE 190 OZ-IN OF PEAK TORQUE TO ACCELERATE THE TURBINE TO 50 KRPM. AFTER THE ENGINE RUNS ABOVE SUSTAINING SPEED THE ELECTRONIC CONTROL WILL SWITCH FROM THE S ...

MECHANICAL BEAM STEERING SYSTEMS ARE LIMITED IN SPEED, COMPACTNESS, RELIABILITY, AND ACCURACY. SIMILAR DIFFICULTIES WERE ENCOUNTERED IN THE DEVELOPMENT OF RADAR SYSTEMS. IN THE CASE OF RADAR, THE DEVELOPMENT OF PHASED ARRAY ANTENNAS ALLOWED GREATER SPEED AND FLEXIBILITY THAN WAS EVER POSSIBLE USING MECHANICALLY STEERED ANTENNAS. ELECTROOPTIC TECHNOLOGIES EXIST WHICH ARE CANDIDATES FOR REPLACING ME ...

THE PROPOSED WORK AIMS TO DEVELOP MULTI-LEVEL OR ANALOG SPATIAL LIGHT MODULATORS (SLMS) THAT INTEGRATE PHOTODETECTORS AND ELECTRONIC INTERAND INTRA-CELL PROCESSING. WE WILL INVESTIGATE A VARIETY OF ANALOG OPTICAL MODULATION EFFECTS IN FERROELECTRIC LIQUID CRYSTALS (FLCS), AND WE WILL DEVELOP APPROPRIATE MULTI-LEVEL ELECTRONIC DRIVING SCHEMES SUITABLE FOR IMPLEMENTATION IN VERY LARGE SCALE INTEGRAT ...

HIGH POWER MICROWAVE (HPM) DIRECTED ENERGY WEAPONS POSE A THREAT TO SYSTEMS WHICH EMPLOY ADVANCED INTEGRATED CIRCUITS (VLSI/VHSIC). THESE CIRCUITS, WHICH USE SMALL GEOMETRY DEVICES, ARE SUSCEPTIBLE TO UPSET AND DAMAGE DUE TO THE LARGE CURRENTS AND VOLTAGES WHICH COUPLE TO THE PRINTED CIRCUIT BOARDS FROM HPM SOURCES. ELECTROSTATIC DISCHARGE PROTECTION IS INADEQUATE FOR THE REPETITIVE PULSE NATURE O ...

AN INNOVATIVE CONCEPT FOR A NEW CLASS OF EMP SIMULATORS IS PROPOSED. THE ELECTROMAGNETIC EQUIVALENCE PRINCIPLE IS APPLIED TO PROVIDE A THREAT LEVEL SIMULATION WITH A BANDWIDTH GOAL OF 1 GHZ AND ARBITRARY ANGLES OF INCIDENCE AND POLARIZATION ARE PROVIDED BY SOFTWARE. IT IS ENVIRONMENTALLY SOUND AND IS HIGHLY AUTOMATED. IT IS EXPECTED TO BE LESS EXPENSIVE TO PROCURE AND MAINTAIN THAN CONVENTIONAL ME ...

THIS PROPOSAL CONSISTS OF USING A LOW COST FORMABLE MANDREL MATERIAL WHICH IS CAPABLE OF EASY REMOVAL THROUGH SMALL OPENINGS. THESE MANDRELS CAN BE PURCHASED IN DIFFERENT ALLOY FORMS TAILORED TO WITHSTAND THE REQUIRED CURE TEMPERATURES AND PRESSURES ASSOCIATED WITH GRAPHITE/EPOXY AND GRAPHITE/THERMOPLASTIC COMPOSITE FABRICATION. THIS PROPRIETARY MATERIAL (STANDARD COMMERCIAL ITEM) HAS A COEFFICIEN ...

OPERATION OF A JAMMER TRANSMITTER FROM A SMALL PLATFORM (RPV OR JEEP) NECESSITATES THE USE OF ELECTRICALLY SHORT ANTENNAS SUCH AS SHORT WHIPS AND SMALL LOOPS. THE CONVENTIONAL APPROACH USES A POWER AMPLIFIER DESIGNED FOR A 50-OHM LOAD AND AN ANTENNA TUNER THAT MATCHES THE ANTENNA-INPUT IMPEDANCE TO OHMS. HOWEVER, THE RAPID FREQUENCY CHANGES REQUIRED BY JAMMERS PRECLUDE THE USE OF ANTENNA TUNING. T ...

MODERN HF/VHF JAMMERS EMPLOY POWER COMBINERS AND MULTIPLE POWER-AMPLIFIER (PA) MODULES TO ACHIEVE A HIGH POWER OUTPUT, CANCELLATION OF HARMONICS, AND GRADUAL DEGRADATION OF PERFORMANCE DUE TO MODULE FAILURE. POWER COMBINERS CAN BE A SIGNIFICANT SOURCE OF POWER LOSS BECAUSE OF RESISTIVE LOSSES, MISMATCH (AMPLITUDE/ PHASE) OF PA OUTPUTS, AND PA INEFFICIENCY DUE TO NONNOMINAL LOAD. CURRENTAND VOLTAGE ...

THE DEVELOPMENT OF SIMULATION MODELS OF A DISTRIBUTED SYSTEMS AND THEIR MAPPING INTO A PARALLEL SYSTEM, IS A HIGHLY COMPLEX TECHNICAL TASK BECAUSE OF THE GREAT INFLUENCE ITS VARIOUS ELEMENTS WILL HAVE ON ITS PERFORMANCE. THERE ARE MAJOR TECHNICAL ISSUES INVOLVED IN PERFORMING SUCH COMPLEX SIMULATION EFFORT, INCLUDING UNIQUE REQUIREMENTS SIMULATION MODELS, VARIED ARCHITECTURAL CONCEPTS OF DISTRIBUT ...

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