Award Data

A CRYOCOOLER CAPABLE OF OPERATING UNDER EXTREMELY HIGH ACCELERATION LEVELS IS PROPOSED. THE CRYOCOOLER USES THE LINDE-HAMPSON CYCLE, AND CAN REACH APPROXIMATELY 80 KELVIN. MULTI-STAGE UNITS, TO REACH LOWER TEMPERATURES, ARE ALSO POSSIBLE.

THE ACQUISITION OF POST BOOST PHASE VEHICLES AND/OR INDIVIDUAL REENTRY VEHICLES BY AN INFRARED SENSOR ON BOARD A SMALL G HARDENED PROJECTILE WHICH SUBSEQUENTLY HOMES ON AND IMPACTS ITS TARGET OFFERS AN ATTRACTIVE APPROACH FOR REENTRY VEHICLE KINETIC ENERGY KILL. THE ACQUISITION, TRACKING, DISCRIMINATION AND GUIDANCE FUNCTIONS REQUIRED OF SUCH AN IR SENSOR RESULT IN A NUMBER OF CRITICAL ISSUES. THE ...

THE DEVELOPMENT OF HIGH POWER, HIGH REPETITION RATE CLOSING SWITCHES HAS RECENTLY BECOME IMPORTANT FOR MANY PULSED POWER APPLICATIONS. HISTORICALLY, HIGH REPETITION RATE SWITCHES FOR PULSED POWER APPLICATIONS HAVE EITHER BEEN SPARK GAPS OR THYRATRONS. THYRATRONS HAVE HIGH REPETITION RATES, BUT ARE LIMITED TO LOW VOLTAGES AND LOW CURRENT. CONVERSELY, SPARK GAPS CAN CARRY HIGH CURRENTS AND STAND-OFF ...

MANY OF THE SYSTEMS FOR SDI INVOLVE PULSE POWER AND HIGH VOLTAGE SYSTEMS, INCLUDING LASERS, PARTICLE BEAM ACCELERATORS, AND RAILGUNS. ONE OF THE SIGNIFICANT PROBLEMS YET TO BE SOLVED IN DEVELOPING OPERATIONAL SDI SPACECRAFT IS THE MANAGEMENT OF ELECTRIC FIELDS WITHIN THE SPACECRAFT, THE PRIMARY WEAPON SYSTEM, AND ITS POWER SUPPLY AND CONDITIONING EQUIPMENT. THE ELF CODES UNIQUELY HAVE THE ABILITY ...

LASER ROCKET PROPULSION RESEARCH RECENTLY HAS DEMONSTRATED SUBSTANTIALPOTENTIAL FOR THE CONVERSION OF HIGH POWER LASER ENERGY INTO THERMAL PROPULSIVE ENERGY, USING EITHER CONTINUOUS OR PULSED MODE LASER SOURCES. IT IS NOW POSSIBLE FOR THE FIRST TIME TO DEVELOP PROTOTYPE DESIGNS FOR ACTUAL LASER PROPULSION THRUSTERS THAT CAN BE BUILT AND TESTED AT REALISTIC LASER POWERS. TO ACCOMPLISH THIS, PREVIOU ...

IT IS DESIRABLE TO HAVE A MTHOD FOR EFFICIENT, COST EFFEC- TIVE, AND SIMULTANEOUS REMOVAL OF PB(II), AG(I), CD(II) AND HG(II) FROM POTABLE WATER TO LEVELS WELL BELOW THEIR EPA LIMITS. SUCH A METHOD COULD BE USED BY BOTH MUNICIPAL WATER WASTE TREATMENT PLALNTS. THE INTERACTION OF THE MACROCYCLE TETRAAZA-18CROWN WITH THE METALS OF INTEREST IS OF SUFFI- CIENT STRENGTH AND SELECTIVITY TO REMOVE THE ME ...

POLYMERIC OR CERAMIC INSULATORS CONVENTIONALLY ARE BEING USED IN HIGH VOLTAGE PULSED SYSTEMS. NEW APPROACHES ARE NEEDED THAT WOULD REDUCE INSULATORS RING THICKNESSES AND INCREASE CORRESPONDING GRADING RINGS FLASHOVER VOLTAGE. SUCH AN APPROACH WOULD POSSESS IN COMPARISON TO CONVENTIONAL INSULATORS: HIGHER SURFACE FLASHOVER FIELD STRENGTH; SMALLER PHYSICAL DIMENSIONS FOR EQUIVALENT VOLTAGE HOLDOFF; ...

THE DEVELOPMENT OF HIGH POWER, LOW IMPEDANCE, LIGHTWEIGHT ENERGY STORAGE TRANSMISSION LINES FOR PULSE-POWER APPLICATIONS IS CRUCIAL FORSMALLER, LIGHTWEIGHT, SPACE-BASED, PULSE-POWER SYSTEMS. DEVELOPMENT OF HIGH DIELECTRIC ENERGY STORAGE LINE TECHNOLOGY WOULD GREATLY REDUCETHE SIZE, WEIGHT, AND COMPLEXITY OF PULSE POWER SYSTEMS UTILIZING THESE TYPES OF COMPONENTS. EFFICIENT TRANSPORT OF 400KV, 100K ...

A compact x-ray laser driver with a high repetition rate is the subject of this phase I project. Most existing x-ray laser drivers are huge (1000s of square feet of floor space), expensive ($10,000,000+), have a low repetition rate (1/hr), are complex and require several PhDs to keep them working. Thus applications of present x-ray lasers are limited. In contrast, the proposed laser will occupy on ...

Although there have been many advances in optics for low energy x-rays, (