Award Data

65892 High power applications typically use power converters that are large, expensive, difficult to control, and present significant engineering challenges as power density and power capacity increase. Gate Turn Off thyristor systems, including variants that utilize Emitter Turn Off thyristors and Integrated Gate Commutated thyristors, exhibit slow switching speeds, have poor reverse bias s ...

Energy efficient, cost effective, cryogenic distribution system (up to several miles) is strongly commanded for spaceport and in-space cryogenic systems. The use of magnetic levitation by permanent magnets and high temperature superconductors (HTS) results in without mechanical contact and thus, the conduction part of the heat leak can be reduced to zero. In Phase I, various magnetic suspensions, ...

Energy efficient, cost effective, cryogenic distribution system (up to several miles) is strongly commanded for spaceport and in-space cryogenic systems. The use of magnetic levitation by permanent magnets and high temperature superconductors (HTS) results in without mechanical contact and thus, the conduction part of the heat leak can be reduced to zero. In Phase I, various magnetic suspensions, ...

Improving corrosion control is a significant technical challenge that must be addressed before lightweight metal alloys of aluminum and magnesium can be more widely used in manufacturing industries such as automobile, aerospace, and metal finishing. Use of lightweight metal alloys would provide many advantages for these industries. For example, a 40 percent reduction in the weight of an automobile ...

DESCRIPTION (provided by applicant): A need exists for accurate, self-calibrating instrumentation capable of monitoring in real time the concentration of blood alcohol as evidenced by the alcohol content of exhaled breath. At present instrumentation capable of diagnosing breath alcohol content requires selection of a specific sample time, is not readily amenable to continuous monitoring and doe ...

"The 3 inch Acoustic Device, Countermeasure (ADC) MK2 is theNavy's standard torpedo countermeasure which has been deployedon submarines for over 20 years. The Mobile ADC MK2 device iscurrently under development and will provide significanttactical value in putting as much seperation between thelaunching submarine and the countermeasure as possible. Inorder to maximize the mobility effectiveness ...

65177 Remote sensing is required for the measurement of sequestered carbon in heavily wooded areas. Airborne or satellite borne radar measurement systems would be preferred due to their ability to cover large areas rapidly and be used in all weather conditions, both day and night. However, existing airborne and satellite radar sensor systems have frequencies above 400 MHz, which cannot penet ...

65177 Remote sensing is required for the measurement of sequestered carbon in heavily wooded areas. Airborne or satellite borne radar measurement systems would be preferred due to their ability to cover large areas rapidly and be used in all weather conditions, both day and night. However, existing airborne and satellite radar sensor systems have frequencies above 400 MHz, which cannot penet ...

"The Navy operates its helicopters and other aircraft in dust, salt, and water-laden environments. The impact of sand and water droplets on the rotor blades at high velocities causes rotor life to drop drastically. The cost of replacing and maintainingrotor blades is a significant factor. The current solution is to use metallic abrasion strips that offer limited protection; however, the strips lim ...

"There is a great need for multifunctional communication arraysthat are small and fit within a specified submarine enclosure.Concurrent low and high frequency functionality presents us withadditional challenges. We propose herein the development of abroadband multifunctional array for operation when mounted on acylindrical surface. The array employs unique miniaturebroadband elements configured fo ...