Award Data

The proposed effort will enhance the capability of the Acoustic System Performance Model (ASPM) and its implementation of the ASEPS Transmission Loss (ASTRAL) model by adding to it a treatment of several physical phenomena. Research in recent years has demonstrated that sea surface forward scatter consists of coherent and incoherent components with both having profound impact on reverberation. The ...

Recent studies by the PI and the Co-PI of this STTR effort have shown that aluminum alloys and stainless steel in Low Cycle Fatigue (LCF) fail upon reaching a critical entropy; claimed to be an intrinsic material property. The critical entropy has been used as damage metric for prediction of remaining useful life (RUL). Also, similar entropic concept has previously been applied to LCF of composite ...

This effort is focused on the development of a system called Situational Awareness via Mixed-initiative Universal Recognition, Analysis, and Inference (SAMURAI). SAMURAI will provide a single cloud-enabled end-to-end workflow covering the full range of data analysis from data ingest to situational assessment and decision support. As part of this workflow SAMURAI will provide the ability for automa ...

The US DoD requires robust ways of neutralizing threats posed by hostile powers and terrorist organizations that may be in possession of dangerous weapons of mass destruction (WMDs). Unfortunately, the weapons currently available to the DoD do not offer a way for the WMD to be destroyed without risking the spread of that material throughout the area. The strategy for the defeat of biological weapo ...

The Defense Threat Reduction Agency (DTRA) has been supporting research of energetic materials and incendiaries as payloads for weapons to defeat targets containing chemical and biological agents. Several universities and Navy labs have been involved in this research, and have narrowed down on a few material formulations that are efficient biocides. These formulations contain a chemical ingredient ...

With missions surrounding counterproliferation, nonproliferation and WMD reduction, the stakes for DTRA are incredibly high. Effectively conducting this work involves cooperation and coordination across a wide range of military and government organizations throughout the United States and the world. The decentralization of threats has led to an explosion in the sources and types of data needed to ...

Seawater lubricated propulsor (i.e., stern tube) bearings are one of the most important bearings aboard a ship. The performance and life of these bearings directly affects the vessel's operational capabilities, life cycle costs, and overall availability. In a single shaft vessel such as an Ohio class SSBN, any failure of this bearing is extremely problematic. In certain applications such as submer ...

Our goal in this Phase II effort is to construct and test a compact, robust testbed for generating laser-cooled strontium atoms on a mobile platform. The focus of the Phase I effort was designing and fabricating an ovenized strontium source that also serves as a 2D+ MOT cell. In Phase II, we will integrate the strontium source into an all-glass-and-silicon vacuum system maintained by a miniature i ...

Progeny Systems Corporation and University of Colorado Colorado Springs team proposes to develop Naval Aviation Flight-Certified Lithium (LI)-ion Battery (NAFCLiB) to provide a safe, reliable, modular and scalable high energy density, long life, low self-discharge battery pack monitored by a robust physics-based battery management system (BMS) suitable for flight certification and employment on N ...

Predicting the high Reynolds number viscous turbulent flow around realistic aircraft, rotorcraft and ship geometries with CFD is time consuming and computationally expensive, with the number of cells required to resolve the flow driving the computational cost. Even with modern CFD methods, the cost of adequately resolved solutions is prohibitive for most engineering tasks. The team of Continuum Dy ...