Award Data

The goal of this program is to design and fabricate selected liquid rocket engine combustion components. This goal will be accomplished by developing a low-cost, near net-shape technology for fabrication and rapid densification of ablation and oxidation-resistant LRE components for a wide variety of Air Force missions. The material which will be used for this purpose is zirconium diboride/boron ...

The final prototype of the Microcircuit Board Repair apparatus will be capable of laying down or lifting metal strips with micrometer dimensions. Under real time computer control, the translation stages will be fully automated or manually controlled. The end user will monitor the process in real time using a camera attached with the source. Laying down the metal lines will be done using Laser C ...

WE PROPOSE TO SEARCH FOR NEW SUPERCONDUCTORS THAT ARE SIMILAR TO THE PEROVSKITE-BASED HIGH TEMPERATURE SUPERCONDUCTORS (HTS), BUT WITH THE OXYGEN REPLACED BY A CHALCOGEN, THAT IS SULFUR, SELENIUM OR TELLURIUM. WE BELIEVE THAT THE HTS COPPER OXIDES ARE NOT A UNIQUE ACCIDENT OF NATURE, BUT THAT THERE ARE OTHER COMPLEX CHEMICAL COMPOUNDS THAT COULD ALSO BE SUPERCONDUCTING. AN OBVIOUS PLACE TO LOOK WO ...

InP based heterojunction bipolar transistors (HBTs) exhibit proven potential for use in high performance digital integrated circuits and discrete microwave components. For high speed applications, it is desirable to utilize structures that have been designed to promote high levels of nonequilibrium electron transport as this allows realization of higher electron velocities than possible for diffus ...

REGENERATORS THERMOFLUID CRYOREFRIGERATORS THE NEW TYPE OF REGENERATORS PROPOSED OFFERS FOR 10 K CRYOCOOLERS THE PROSPECT OF REDUCTIONS OF 100'S OF WATTS OF POWER AND KILOGRAMS OF WEIGHT PER WATT OF REFRIGERATION, AND EXTENSION OF OPERATING LIFE BY 10,000'S OF HOURS. PHASE 1 WILL DEFINE THE MODELING, THERMOFLUID PERFORMANCE TRADE-OFFS, MATERIAL PROPERTIES, PRODUCTION AND TEST METHODS. THESE REGENE ...

CRYOCOOLER MICROELECTROMECHANICAL MICRODYNAMICS INTEGRATED GENERAL PNEUMATICS CORP'S PRELIMINARY DESIGN FOR EMPLOYING MICRODYNAMICS TO PRODUCE MICROELECTROMECHANICAL CLOSED-CYCLE CRYOCOOLERS USING SILICON PROCESSING TECHNIQUES WILL BE USED FOR MAKING INTEGRATED CIRCUITS IN PHASE 1. MICROMINIATURE COOLERS WILL BE INTEGRATED AT THE WAFER SCALE WITH A WIDE VARIETY OF SENSORS AND OTHER COLD ELECTRONIC ...

Development is proposed of a new, rotary form of Stirling cryocooler which offers longer operating life and much lower vibration than reciprocating forms of cryocoolers. The proposed machine has fewer moving parts to wear and can be completely balanced to eliminate vibration in all planes by simple counterweights on the shaft, which is not possible in reciprocating machines. The rotary desi ...

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Aerospace composite panels containing a core structure usually use an expanded honeycomb of either aluminum, NOMEX, or carbon fiber. These types of composite panels are often used as structure since the honey-comb core provides stiffness in the "Z" direction. However, they provide no thermal insulation value. Aerospace craft operating both inside and outside the earth's atmosphere experience envir ...

Currently manufactured aerospace composites absorb water vapor to varying degrees. This moisture absorption adds weight to the composite, however, it lowers the glass transition temperature. And, subsequently, the ultimate strength of the resin holding the composite together, in the total composite matrix. For aerospace vehicles that slip the bonds of Earth and enter the vacume of space, any compo ...