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Design of a high performance hydrocarbon liquid rocket engine (LRE) requires a thorough understanding of the heat transfer and cooling requirements of LRE's. An efficient cooling system is crucial in extending engine life and minimizing pumping power. Itis essential to be able to accurately calculate the thermal response to ensure that materials maintain structural integrity and the cooling chan ...

Combustion instability is one of the greatest development risks for liquid propellant engines. The risks arise in development of a stable injector design from a variety of sources - limited modelling capabilities, poor scalability and the high cost ofappropriate component test facilities. Sierra Engineering believes that much of the empirical data on the injection element's driving characteristic ...

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The plasma surface flow controllers, or plasma actuators, are based on momentum transfer created by either locally accelerating the charged species of the plasma in the electric field or by globally accelerating the charged species of the plasma via aninduced traveling wave imposed by electric field generated by several phases of applied high voltage. Plasma based surface flow controllers have al ...

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BETTER METHODS TO DELIVER AND DISSEMINATE CARGO ARE NECESSARY TO FULLY EXPLOIT THE CAPABILITIES OF FUTURE INTRATHEATER AIRLIFTERS. THE ARMY'S AND AIR FORCE RENEWED EMPHASIS ON MOBILITY WILL REQUIRE GREATER PRODUCTIVITY BY TRANSPORTATION RESOURCES TO ACHIEVE NATIONAL OBJECTIVES. THE NECESSITATES A MORE THOROUGHLY-INTEGRATED TRANSPORTATION NETWORK. ADVANCED TECHNOLGIES, MATERIALS, AND INNOVATIVE ENG ...

SILICON CARBIDE POSSESSES A UNIQUE COMBINATION OF PROPERTIES THAT ALLOW SIMULTANEOUS HIGH TEMPERATURE AND HIGH POWER OPERATION OF ELECTRONIC DEVICES MADE FROM THIS MATERIAL. THE CUBIC FORM OF SIC (BETA) HAS A WIDE BANDGAP (2.2 EV @ 27 DEG C), WHICH THEORETICALLY GIVES A MAXIMUM OPERABLE TEMPERATURE OF 925 DEG C. ALPHA SIC (6H) HAS AN EVEN WIDER BANDGAP OF 2.86 EV @ 27 DEG C, GIVING A MAXIMUM OPERA ...

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The Feather Weight Display is a novel design and integration of industrially mature technologies including ultra-density silicon circuits with ultra-dense chip-to-chip interconnections, ultra-density VCSEL arrays, nonlinear photonic upconverting colormaterials, and nonlinear optical elements. To demonstrate its potential is primarily a design process. Design of emissive and virtual retinal devic ...

Recent terrorist activities have left virtually no question that futureprotection systems for warriors will need to address chemical-biologicalfiltration. Although filters are presently available for CB threat, thereremains a need for regenerating, signature-less filters that can trapnanoparticulates and biological pollutants. In this context, under Phase IeSpin proposes to provide a feasibility d ...