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Aerospace Gimbals Test Service

A new test service introduced by Bal Seal Engineering, Inc. (Foothill Ranch, CA) offers OEMs verified performance results for Bal Seal spring-energized rotary/face seals used in aerospace and defense gimbal applications. Aerospace gimbals used for targeting, surveillance, and threat detection require precise positioning and must overcome internal drag to function efficiently.

Posted in: Products, Defense
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Soldiers Field-Test Robotics Technology

Picture a hot summer day in Afghanistan, and a company of 25th Infantry Division soldiers preparing to move to a new area of operation. Instead of using their legs and backs, these soldiers are fortunate enough to have a small robot to help them on the battlefield. It could provide intelligence, surveillance and reconnaissance without putting soldiers in harm's way. Technology like this can be the future of the battlefield and 25th Infantry Division soldiers have been testing this theory.

Posted in: News, Defense, Automation, Robotics
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Wireless Sensor Enables Study of Traumatic Brain Injuries

A new system that uses a wireless implant has been shown to record – for the first time – how brain tissue deforms when subjected to the kind of shock that causes blast-induced trauma commonly seen in combat veterans.

Posted in: News, Aerospace, Defense, Medical, Research Lab, Data Acquisition, Sensors
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Researchers Discover Salty Solution to Better, Safer Batteries

A team of researchers from the University of Maryland (UMD) and the U.S. Army Research Laboratory (ARL) have devised a groundbreaking “Water-in-Salt” aqueous lithium ion battery technology that could provide power, efficiency and longevity comparable to today's lithium-ion batteries, but without the fire risk, poisonous chemicals and environmental hazards of current lithium batteries.

Posted in: News, Aerospace, Defense
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Army Researchers Add Power and Range to Artillery

Picatinny Arsenal (NJ) engineers are improving artillery by extending its range, power and versatility using an electrically-responsive method to control energetic materials such as propellants. "Electrically responsive" means that the materials are controlled by electricity. "Energetic materials" are items such as explosives, propellants and pyrotechnics.

Posted in: News, Aerospace, Defense
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Armor Plating Has Built-In Transparent Ceramic Eyes

Protecting yourself usually involves a tradeoff. If you want maximum physical protection, whether from biting predators or exploding artillery shells, it generally compromises your ability to see. But sea-dwelling creatures called chitons have figured out a way around that problem: Tiny eyes embedded within their tough protective shells have transparent lenses made of the same ceramic material as the rest of their shells — and they’re just as tough.

Posted in: News, Aerospace, Defense
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Mineral Could be Used to Create Transparent Armor

Imagine a glass window that’s tough like armor, a camera lens that doesn’t get scratched in a sand storm, or a smartphone that doesn’t break when dropped. Except it’s not glass; it’s a special ceramic called spinel {spin- ELL} that the Naval Research Laboratory (NRL) has been researching over the last 10 years.

Posted in: News, Aerospace, Defense
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Structural Composites with Tuned EM Chirality

Several metamaterials show promise in providing advanced radio frequency control.

Work on structural composites with tunable chiral elements has produced electronically tunable overall chiral composites, mechanically tunable chiral composites, flat lenses with soft hyperbolic focusing due to indefinite overall permittivity, a tunable flat lens based on chiral elements with adjustable focal spot based on applied mechanical deformation, and a three-phase periodic composite that demon strates positive and negative refraction, depending on the input frequency and angle of incidence. A MATLAB code directly computes the group velocity and pass bands for a given set of wave vectors, and generates an intuitive plot for quick, but thorough analysis.

Posted in: Briefs, Aerospace, Defense, Materials, Analysis methodologies, Composite materials
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Advanced, Single-Polymer, Nanofiber-Reinforced Composite

Continuous nanofibers provide unique advantages for future structural nanocomposites.

A strategic goal of the U.S. Air Force is to be able to deliver munitions to targets anywhere around the globe in less than an hour. This will require very high speeds and novel lightweight and temperature-resistant materials. Nanocomposites are promising emerging materials for structural and functional applications due to unique properties of their nanoscale constituents. However, the currently available nanocomposites based mostly on nanoparticles lack the high strength and stiffness required for structural applications.

Posted in: Briefs, Aerospace, Defense, Materials, Composite materials, Fibers, Nanomaterials, Polymers
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Quantitative Diagnostics of Multilayered Composite Structures with Ultrasonic Guided Waves

This nondestructive methodology inspects a sound-absorbing composite structural system consisting of polymeric and metallic materials.

Aging infrastructure has a major impact on safety, increasing the need to assess damage severity. Machinery, systems, and components such as airplanes, cars, pumps, and pipes in the oil and chemical industry are subject to varying cyclic service loading and environmental influences. Sometimes multilayered coatings are used, requiring a high-resolution inspection to confirm the presence of a defect such as a delamination, and accurately locate and quantify its size. Highly attenuating materials may significantly increase the inspection time while limiting defect observability. Guided waves have been recognized as having excellent potential for nondestructive inspection. However, the presence of viscoelastic coatings used for corrosion protection is one of the major obstacles for guided wave inspection.

Posted in: Briefs, Aerospace, Defense, Manufacturing & Prototyping, Materials, Diagnostics, Composite materials, Inspections, Non-destructive tests
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