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Advanced Multifunctional Materials for High Speed Combatant Hulls

A new additive manufacturing process for producing composite materials with prescribed RF properties. Office of Naval Research, Arlington, Virginia Currently small boat combatant design focuses primarily on speed and maneuverability. It would be advantageous to expand these capabilities to include reduced radar cross-section, and enhanced survivability to blast and ballistic threats for both the structure and warfighters.

Posted in: Briefs

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Fiber Optic Rotary Joints Add a Spin to Sensing, Mobile, and Robotic Fiber Systems

To the passing optical signals, fiberoptic rotary joints (FORJs) are nothing more than fiber connectors, which provide connection between one or multiple fibers. Their unrestricted ability to rotate, however, gives them a critical role in many sensing, mobile, and robotic fiber systems such as ROVs (remotely operated vehicles), aerostat radars, submarines, satellite antennae, OCT (optical coherence tomography), mining vehicles, cranes, wind turbines, robotic vehicles, broadcasting (mobile cameras), etc. This article discusses some of the applications where optical rotary joints are indispensable. www.princetel.com Download White Paper

Posted in: Photonics, White Papers, White Papers, Photonics

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Autonomous Underwater Munitions and Explosives of Concern Detection System

AUV uses a magnetometer to detect dangerous submerged munitions. Environmental Security Technology Certification Program, Alexandria, Virginia The objective of Environmental Security Technology Certification Program (ESTCP) Project MR-201002, Autonomous Underwater Vehicle (AUV) Munitions and Explosives of Concern (MEC) Detection System, was to integrate an untethered and unmanned underwater vehicle with a total field magnetometer for underwater munitions detection and upgrade magnetic noise compensation software to reduce interference from electrical and dynamic influences such as vehicle heading, pitch and roll.

Posted in: Briefs, Machinery & Automation

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Power-Line UAV Modeling and Simulation

Computer program helps UAVs avoid collisions with overhead wires. Army Research Laboratory, Adelphi, Maryland The Army Research Laboratory Power-Line Unmanned Aerial Vehicle (UAV) Modeling and Simulation (ARL-PLUMS) Software Tool allows a user to model, compute, and analyze the quasistatic electric and magnetic fields around alternating current (AC) power lines. ARL-PLUMS comes with an interactive graphical user interface (GUI), which accesses a compute engine to calculate these fields around these lines due to various ground and line geometries and load conditions. ARLPLUMS allows the user to rapidly define all significant model parameters and compute the electric and magnetic fields along a UAV path or in a cutting plane. In addition, a set of false-color plots can be created to show the time-varying nature of the fields as a movie. ARL-PLUMS also comes with an application programming interface (API) for accessing some of these features from MATLAB without using the GUI.

Posted in: Briefs, Machinery & Automation

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Design of a Multi-Segmented Magnetic Robot for Hull Inspection

This flexible, climbing robot could perform hazardous maintenance functions. Space and Naval Warfare Systems Center Pacific, San Diego, California Hull, deck plate, and tank inspection for corrosion, deformation, and fractures is a necessary part of ship maintenance to ensure functional integrity and proper operation of the ship. These inspections are labor intensive, expensive, and often dangerous. A multi-segmented magnetic wheeled robot can assist the surveyors in these tasks.

Posted in: Briefs, Machinery & Automation

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A Modular Approach to Video Designation of Manipulation Targets for Mobile Manipulators

This process enables remote manipulation of objects using a 2D video feed. Naval Surface Warfare Center Indian Head EOD Technology Division, Indian Head, Maryland Currently fielded EOD (explosive ordnance disposal) robots are limited in terms of both mechanical ability and autonomous capabilities when compared to the current state-of-the-art in mobile robotics. To combat this problem the Joint Service EOD Program is developing the Advanced EOD Robot System (AEODRS). AEODRS consists of three system variants that vary in size: small for dismounted operations, medium for tactical operations, and large for base/infrastructure operations. Differing from past EOD UGV development efforts, these robots will be designed under a modular architecture consisting of several capability modules that are to be developed separately.

Posted in: Briefs, Machinery & Automation

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Two-Dimensional Distributed Velocity Collision Avoidance

Sophisticated algorithms prevent mishaps between autonomous unmanned vehicles. Naval Air Warfare Center Weapons Division, China Lake, California As the number of autonomous vehicles continues to increase for both commercial and military applications, collision avoidance algorithms are of the utmost importance to successfully execute missions in dynamic environments.

Posted in: Briefs, Machinery & Automation

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