Award Data

Although advancements in CFD technology and high performance computing have proven to be effective and reasonably accurate in assessing the hydrodynamic performance of naval vessels, the effort required to develop associated analysis models remains a challenging and time consuming task. Decomposing and manipulating the design geometry for mesh construction, while capturing near-field and far-field ...

Current atmospheric diving suits and remotely operated vehicles (ROVs) have end effectors with simply 1 DOF. This rudimentary manipulation results in excessive time spent working a problem underwater, development of task specific tools that can be operated by the pliers or acceptance that a specific job simply can't be accomplished. Vishwa Robotics proposes a teleoperated, anthropomorphic end ...

Under this STTR, Imaging Systems Technology (IST) in cooperation with Georgia Institute Technology (GIT) will develop and mature models to predict mechanical properties of refractory alloys with an eye toward tailoring these alloys for specific applications. In particular, this research will focus on addressing core aspects of Integrated Computational Materials Engineering (ICME) as it applies to ...

The objective of the work described in this proposal is to aid in the advancement of Mo-Si-B alloys for use in high temperature applications such as hot gas stream components in turbine engines. Such alloys are being characterized for their monotonic tensile properties in tension and compression as well for their creep resistance. Likewise, multiphase Mo-Si-B alloys have been studied in terms of m ...

Marine mammals like bottlenose dolphins are maintained by US Navy's Marine Mammal Program to protect harbors and detect underwater mines. The maintenance and betterment of health of these dolphins in captivity is a priority in order to improve the fitness and readiness of these animals for defense missions. Accacia International proposes to develop probiotic pharmaceuticals to treat and preve ...

Thermophotovoltaic (TPV) energy conversion produces electrical power from heat energy using, in its most basic form, a thermal emitter and a photovoltaic converter. Since these systems typically have no or few moving parts, they provide a long term maintenance-free power generation. Key factors affecting performance include matching the emitter spectrum more precisely to the conversion characteris ...

Wearable human state monitors must be mechanically invisible to greatest degree possible, to maximize comfort, wearability, hygiene and signal quality. These device attributes are aligned with the goal of closely coupling devices to the body for best-quality signal capture and continuous health monitoring by seamlessly integrating with the body, under clothing and gear. They must be robust to dyna ...

Green laser sources are important in advanced naval mine detection as this wavelength has good penetration though seawater. Mine detection programs such as the Coastal Battlefield Reconnaissance and Analysis (COBRA) system and the Airborne Laser Mine Detection System (ALMDS) currently use frequency-doubled 1-µm lasers as the laser source. The generation of green laser light via frequency doubling ...

This project is focused on the development of a new generation of GaN-based transistors with breakdown voltages in excess of 1kV that can be used in the demonstration of power amplifiers operating at 1 GHz with power added efficiencies in excess of 90%. To achieve this performance, this project will develop new approaches to increase the breakdown voltage of GaN high electron mobility transistors, ...

The proposed work will address the core physics underlying acoustic reverberation as related to properties of the ocean environment and properties of the acoustic sources, receivers and waveforms that make up ocean-going acoustic systems of interest to the U.S. Navy. Present day active acoustic system performance models, which contain reverberation models as an essential component, are over twenty ...