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METAL DEPOSITION AND COATING PROCESSES DEVELOPED AT VERSAR INC. MAKE IT POSSIBLE TO MODIFY COMMERCIALLY AVAILABLE RETICULATED FOAM MATERIALS SO THAT THEY WILL BE MORE CONDUCTIVE WITHOUT DEGRADING OTHER PROPERTIES UNACCEPTALY. THEREBY THE PROBLEM OF ELECTROSTATIC CHARGE BUILDUP DURING AIRCRAFT REFUELING OPERATIONS CAN BE ALLEVIATED AND THE RISK OF FIRES REDUCED. TWO PARALLEL APPROACHES ARE SUGGESTE ...

A BASIC RESEARCH PROGRAM IS PROPOSED TO STUDY CAPACITIVE ENERGY STORAGE AT 77 K BASED ON CADMIUM-LEAD NIOBATE CERAMICS FOR TWO REASONS: (1) THE DIELECTRIC CONSTANT IS UNUSUALLY LARGE AT THESE TEMPERATURES (\8000); AND (2) THE FERROELECTRIC TRANSITION CAN BE COMPOSITIONALLY ADJUSTED BELOW 77 K. TWO ADVANTAGES ACCRUE: (1) THE STORED ENERGY DENSITY AT 77 K IS MAXIMIZED; AND (2) ON DISCHARGE (I.E., E ...

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RESULTS OF FEASIBILITY ANALYSES INDICATE THAT A PULSED COHERENT CO2 LIDAR SYSTEM IS CAPABLE OF MEASURING THE GLOBAL WIND FIELD. CHANGING LASER TECHNOLOGY INDICATES THAT SOLID STATE LASERS MAY ALSO BE CAPABLE OF COHERENT WIND MEASUREMENT. THIS EFFORT WILL DETERMINE THE CAPABILITY OF SHORTER WAVELENGTH LASERS (1-10 MICROMETERS) FOR COHERENT ATMOSPHERIC MEASUREMENTS OF WIND, TEMPERATURE, AND WATER VA ...

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CADMIUM TELLURIDE (CDTE) CRYSTALS ARE REQUIRED FOR A NUMBER OF APPLICATIONS. ONE OF THE MAIN REQUIREMENTS IS AS MODULATORS OF 10.6 UM CO2 LASER RADIATION, ESPECIALLY IN LASER RADAR. A NUMBER OF CRYSTAL GROWTH PROCESSES HAVE BEEN USED; HOWEVER, ONLY SMALL CRYSTALS WITH LOW YIELDS HAVE BEEN GROWN. IT IS INTENDED TO USE A NEW CRYSTAL GROWTH PROCESS, THE HEAT EXCHANGER METHOD (HEM), AND SHOW FEASIBILI ...

GASS IS KEY STRATEGIC MATERIAL FOR SPACE ELECTRONICS. IT IS COSTLY BECAUSE OF HIGH RAW MATERIAL COSTS, HIGH CRYSTAL GROWTH COSTS, AND LOW MATERIAL UTILIZATION DUE TO INEFFICIENT SLICING. THE COST CAN BE REDUCED SIGNIFICANTLY BY INCREASING THE MATERIAL UTILIZATION USING A NEW WIRE SLICING TECHNIQUE--FIXED ABRASIVE SLICING TECHNIQUE (FAST). THE FEASIBILITY OF THE MULTI-WIRE FAST APPROACH HAS BEEN DE ...

THIS PROJECT WILL DEVELOP AND TEST A MEANS OF INCREASING TRANSLAMINAR STRENGTH IN RESIN MATRIX COMPOSITES BY IMPLANTING HIGH MODULUS FIBERS OR STRANDS BETWEEN PLIES. ADDITIONAL EFFECT WILL BE GIVEN TO DEVELOPING A LOW COST METHOD OF SKIN/SPAR REINFORCEMENT.

AMONG THE MAJOR CAUSES OF RESISTANCE TO THE USE OF DECISION AIDS OF THE NEAR-UNIVERSAL MISMATCH BETWEEN A USER'S THOUGHT PROCESSING AND THE ANALYTIC MODEL AND CONSTRUCTS IMPOSED ON HIM BY THE COMPUTER. TO CORRECT THIS SITUATION, DESIGN PRINCIPLES MUST BE DEVELOP ED BASED ON EXPERIMENTAL EVIDENCE--THAT CAUSE AND AID TO PRESENT INFORMATION TO A USER IN A MANNER COMPATIBLE WITH HIS THOUGHT PROCESS.WE ...