Award Data

"Busek's tandem Hall thruster can deliver precisely controllable, repetitive or single impulse bits of arbitrary magnitude, the latter dictated by the duration of the discharge pulse. To fully capitalize on the pulsed operation of a Hall thruster requiresa cathode capable of rapid starting to minimize the time from the command for thrust to the time the discharge pulse can be initiated. The most ...

"Advances in EO sensors and fiber optic information distribution systems havesimplified the distribution of targeting information among the varioussystems. The requirements for higher levels of functionality and performanceare pushing the levels of integration to a point that can no longer besatisfied by the industry mainstay approach of hybrid assembly. Significantimprovements in fiber-optic syst ...

"Physical Sciences Inc. (PSI) proposes to develop and test a novel chemical atomic iodine laser based on vibrational to electronic (V-E) energy transfer. We will develop and exercise a detailed kinetic model to assist in the design of experiments that willalso be part of the Phase I effort. We will develop a unique device that would couple a PSI 5 kW Microwave Driven Jet (MIDJet) to a chemical f ...

Physical Sciences Inc. (PSI) proposes an experimental and analysis program to determine the relative advantages or limitations of two different high-energy laser waveforms for inflicting lethal damage to metal aerospace targets. Repetitively pulsed (RP)and continuous wave (CW) waveforms will be used to irradiate steel, a typical tactical target material. Metal melting rates will be measured and ...

"Physical Sciences Inc. proposes the fabrication of novel composite cathode materials for lithium ion batteries based on vanadium pentoxide and conducting polymers. These composite electrodes are expected to utilize the polyvalent intercalation capabilitiesof V2O5, allowing access to all four of the available valence states in the active material. Currently, the high capacity available in V2O5 can ...

"This Phase I SBIR proposal addresses the use of millimeter-wave radiometry to detect continuum radiation from rocket plumes at launch. Preliminary experiments carried out in a rocket test bed at Stennis AFB, showed that the radiometric signature of arocket plume can exceed 1000o C at 35, 60 and 95 GHz. These results suggest that rocket plumes can be readily detected using a millimeter-wave radiom ...

THE SIGNAL-TO-NOISE RATIO OF INFRARED DETECTORS INCREASES DRAMATICALLYAS THE TEMPERATURE OF THE DETECTOR IS REDUCED TO CRYOGENIC TEMPERATURES AND THERE HAS BEEN A SUBSTANTIAL IMPROVEMENT IN CRYOCOOLERS TO MEET THIS NEED. HOWEVER, VALVES OF ONE TYPE OF CRYOCOOLER, THE JOULE-THOMPSON EXPANSION CRYOCOOLER, ARE PRONE TO PLUGGING BY THE FREEZING OF IMPURITIES IN THE HIGH-PRESSURE STREAM. TO ADDRESS THI ...

RECHARGEABLE POWER SOURCES POSSESSING HIGH ENERGY DENSITIES, BRIEF BUTREPETITIVE HIGH CURRENT OUTPUTS, AND THOUSANDS OF DUTY CYCLES ARE REQUIRED FOR STRATEGIC DEFENSE SYSTEMS. TO ADDRESS THESE NEEDS, HIGH SURFACE AREA, THIN FILM CATHODES ARE BEING FABRICATED FOR AMBIENT TEMPERATURE LITHIUM BATTERIES. THESE CATHODES FEATURE AN ARRAY OF APPROXIMATELY L MICROMETER MICROCRYSTALLITE TIS2 PLATES ORIENTE ...

A PROGRAM TO DEVELOP ELECTROCHROMIC DEVICES CAPABLE OF FAST TRANSMISSIVE TO REFLECTIVE OPTICAL SWITCHING IS PROPOSED. THESE DEVICES WOULD BE USED FOR OPTICAL HARDENING IN THE WAVELENGTH RANGE FROM 0.615 MICROMWTERS. OPTICAL SWITCHING ELEMENTS BASED ON SINGLE CRYSTAL LAYERS OR EPITAXIAL FILMS OF THE METAL DICHALOCOGENIDES ZRS(2) AND HF(2) WOULD BE DEVELOPED. WE PROPOSE TO INTERCALATE SINGLE CRYSTAL ...

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