Award Data

The results of the Phase I effort demonstrated the feasibility of constructing a realistic, high fidelity active sonar clutter model that is not computationally intensive. Our first objective is to create a library of clutter objects based on statistical descriptors extracted from existing sonar databases. Our second objective is to create several surrogate acoustic environments using range depend ...

Applied Physical Sciences Corp. working with L-3 Communications Maripro will develop a trawl-resistant, Robust Deployable Acoustic Node (RDAN). The RDAN technology will enable the U.S. Navy to install and operate acoustic underwater training ranges in shallow water environment to enhance fleet readiness. The acoustic sensor on the node will be specially designed to provide excellent acoustic fid ...

Applied Technology Associates (ATA) proposes to develop a miniature, rapid, non-magnetic azimuth sensor by exploiting innovative magneto-hydrodynamic (MHD) inertial angular rate sensing technology. The proposed solution centers upon use of a spinning MHD sensor that outputs a modulated version of Earth rate and offers means of deriving true azimuth. Inertial rate sensing is employed to link the MH ...

The Navy is developing LADAR sensors for responsive Intelligence, Surveillance and Reconnaissance use where ranges to targets exceed 10km. If such a LADAR sensor is to image a target area by scanning one or several laser beams at such long ranges, high-pointing-accuracy or knowledge, over a wide operational temperature range, is required to obtain a high-quality LADAR image. A two-axis Fast Steeri ...

gggGiven the U.S. Navy’s goal to eliminate the potential loss of an F-35/Joint Strike Fighter aircraft during in-flight refueling operations it is desirable to modify today’s probe and drogue system that is based on a “weak link” design. Refueling hose-whip is a long standing problem that leads to stress overloading of refueling components, which in turn break off leading to catastrophic ...

A software tool for residual strength and life prediction of composite bolted joints will be developed by enhancing and integrating an existing mesh independent delamination and matrix cracking network model in ABAQUS. The tool will be able to model arbitrary location, size of damage, and geometric configuration of a composite structure with fastener holes without user intervention or remeshing. H ...

An automatic software tool for 3D fatigue crack growth prognosis of structural systems under realistic complex loading will be developed by integrating a unified growth model with a mesh independent extended finite element toolkit in ABAQUS. The tool will be able to model arbitrary non-planer crack growth over multiple growth regimes with an arbitrary stress ratio without user intervention or reme ...

Fiber glass reinforced polymers (FRP) are used in building the structural components for ships and aircraft. As a structural part, these materials are very rigid and strong. However, they do not perform well in a cavitating environment, and they can be eroded by sand or rain fairly quickly. These deficiencies are especially serious for the propulsion and lift fans for air-cushion vehicles such as ...

“Inverse Autofrettage” is an adaptation of the century old autofrettage method used to generate residual compressive stresses at the inner surface of thick walled tubes like cannon barrels. It relies upon briefly exposing formed hydraulic tubing (which is thin wall, in this case) to very high hydrostatic pressure in a specific manner that results in large residual hoop compression strain. With ...

Management Sciences, Inc. scientists have developed Cognitive Bayesian Information Exploitation (CBNX), a revolutionary set of algorithms that apply context frames as filters to learn causal relationships needed to understand and exploit the meaning of data. We have applied the CBNX toolset to develop real time situation awareness of the health of aircraft engines, forest fires, and intelligent ma ...