Award Data

A SOLID STATE SWITCH FOR OPERATION AT CRYOGENIC TEMPERATURE IS BEING DEVELOPED THAT WILL PROVIDE MULTI-MEGAWATT POWER CONDITIONING IN THE RAPIDLY EXPANDING FIELD OF LOW TEMPERATURE ELECTRONICS. SINCE EXISTING CONTROLLED SWITCHES ARE NOT DIRECTLY SUITABLE FOR CRYOGENIC OPERATION, ONLY A FUNDAMENTAL APPROACH CAN DEVELOP STRUCTURES CAPABLE OF LOW LOSS AND RELIABLE OPERATION IN THE TEMPERATURE RANGE B ...

INFRARED SYSTEMS ARE NEEDED FOR A VARIETY OF DEFENSE RELATED APPLICATIONS, SUCH AS: SURVEILLANCE, TARGET DETECTION, ACQUISITION AND TRACKING, MISSILE GUIDANCE, ETC. FOR MANY APPLICATIONS SUCH AS THOSE INVOLVING COLD-DIM TARGETS, THESE SYSTEMS NEED TO OPERATE IN THE VERY LONG WAVELENGTH REGION OF THE INFRARED SPECTRUM, E.G. 15-35 MICRONS CUTOFF. IN THIS WAVELENGTH REGION, THE AVAILABILITY OF SUITAB ...

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A SELF CONTAINED LIQUEFIER IS BEING DEVELOPED TO RECONDENSE THE VAPOR BOILOFF FROM THE CRYOGENIC LIQUID STORAGE DEWARS OF LONG LIFE SPACE POWER SYSTEMS. THE PROOF-OF-PRINCIPLE LIQUEFIER FOR THE CHALLENGING DUTY OF HELIUM LIQUEFACTION IS A SMALL LOW CAPACITY (10 LITRES LIQUID HELIUM PER DAY) UNCOMPLICATED SYSTEM HAVING A LONG MAINTENANCE FREE OPERATING LIFE AND LOW INITIAL COST WITH MODEST AUXILIAR ...

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A PROOF OF PRINCIPLE EXPERIMENT IS BEING CONSTRUCTED THAT WILL CLEARLYDEMONSTRATE THE ESSENTIAL ELEMENTS OF ARRAY OPERATION. AN OSCILLATOR AND TWO AMPLIFIER SECTIONS ARE BEING SUBJECTED TO PERFORMANCE TESTS. PHASE ARRAY OPTICAL RADARS OR LIDARS OPERATING WITH RELATIVELY LARGE SYNTHETIC APERTURES CAN EXHIBIT MANY OF THE SAME RAPID POINTING AND TRACKING FEATURES ASSOCIATED WITH MICROWAVE SYSTEMS, AN ...

THE UNPRECEDENTED POINTING AND TRACKING ACCURACIES REQUIRED IN STRATEGIC DEFENSE ENGAGEMENT SCENARIOS PRESENT FORMIDABLE CHALLENGES TO THE DESIGNERS OF PLATFORM CONTROL SYSTEMS FOR SLEWING AND VIBRATIONSUPPRESSION. IT IS CLEAR THAT CONVENTIONAL DESIGN PROCEDURES BASED ONFINITE DIMENSIONAL, LUMPED PARAMETER MODELS (FINITE ELEMENTS OR MODES)ARE INADEQUATE TO THE TASK. ADVANCED DESIGN METHODS ARE BEI ...