Materials

AFRL, Universities Partner on 3D-Printed Composites

Joining forces with various universities, the Air Force Research Lab has demonstrated additively manufactured epoxy/carbon fiber composites used in many structural parts on aircraft and spacecraft. The materials have higher thermal and environmental durability and are extremely strong and lightweight.

Posted in: INSIDER, News, Defense, Composites, Materials
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Thermoplastic Composites to Play Enhanced Role in Next-Generation Aerospace Applications

Advanced thermoplastic composites-and their emergence as prominent materials for future aerospace applications–are sparking a flurry of activity from aerospace manufacturers, designers, component producers and formatters.

Posted in: Articles, Aerospace Manufacturing and Machining, Aeronautics, Aerospace, Aviation, Thermal Management, Manufacturing & Prototyping, Composites, Materials, Plastics, Mechanical Components
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Ballistic Helmets

3M
St. Paul, MN
888-364-3577
www.3M.com/Defense

Military and police forces across the world require cutting-edge protection to match an ever-evolving range of operational environments. Ceradyne, Inc., a 3M company, designed the new 3M Ballistic Helmet F70 that combines a high level of protection with low weight for maximum flexibility in military combat missions, special forces operations and law enforcement tactical operations.

Posted in: Application Briefs, Defense, Manufacturing & Prototyping, Materials
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Vehicle Protection System

Leonardo DRS, Inc.
Arlington, VA
703-416-8000
www.drs.com

Leonardo DRS, Inc. and partner Rafael Advanced Defense Systems Ltd. of Israel have successfully completed a lengthy live-fire qualification process for key elements of the lighter weight – but equally performing - TROPHY Vehicle Protection System (VPS).

Posted in: Application Briefs, Automotive, Defense, Materials, Automotive, Transportation
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Ultra-lightweight Ceramic Withstands Extreme Temperatures

An extremely light, highly durable ceramic aerogel was developed that could ultimately be an upgrade for spacecraft insulation. The new material is made of thin layers of boron nitride with atoms that are connected in hexagon patterns, like chicken wire.

Posted in: INSIDER, News, Defense, Ceramics, Materials
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New Coating Repels Ice from Any Surface

Researchers used a new theory in physics called stress localization to create a durable silicone polymer coating capable of repelling ice from any surface. The new material uses elastic energy localization where ice meets the material, triggering cracks at the interface that slough off the ice.

Posted in: INSIDER, News, Defense, Coating/Surface Modification, Coatings & Adhesives, Materials
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New Products: February 2019 Aerospace & Defense Technology

Defense-Grade FPGAs

Xilinx, Inc. (San Jose, CA) announced availability of its Defense-grade XQ UltraScale+ portfolio of products, providing the benefits of its UltraScale+ architecture plus extended temperature and ruggedized packages to address the needs of the aerospace and defense industry. The new products encompass the XQ Zynq® UltraScale+ MPSoCs and RFSoCs, as well as XQ Ultra-Scale+ Kintex® and Virtex ® FPGAs.

Posted in: Products, Data Acquisition, Computers, 3 D Printing & Additive Manufacturing, Industrial Controls & Automation, Manufacturing & Prototyping, Composites, Materials, Joining & Assembly, Machinery, Mechanical Components, Automation, Computer-Aided Design (CAD), Software, Measuring Instruments, Test & Measurement
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An Introduction to PCM Heat Sinks

With the exception of thermal storage heat sinks, the term heat sink is a misnomer. Standard heat sinks for electronics cooling are actually heat exchangers, taking the heat from the electronics, and transferring it to a fluid, either air or coolant. Phase Change Material (PCM) heat sinks are the only heat sinks that actually act as a (temporary) sink for heat. They are emerging in the thermal management realm to solve thermal problems in systems where active solutions cannot be used. When there is no place to dissipate the heat generated by electric components, a PCM heat sink is capable of absorbing the generated waste heat [1] .

Posted in: Articles, Aerospace, Electronic Components, Electronics, Electronics & Computers, Thermal Management, Manufacturing & Prototyping, Materials
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Pulsed Microwave Plasma Instrumentation for Investigation of Plasma-Tuned Multiphase Combustion

Strategies to control solid rocket propellant regression rate require a robust throttling technique applicable to high performance propellant formulations. Currently, several methods to control and throttle either motors or subscale propellant strands exist, including chamber pressure control (e.g. pintle nozzles or rapid depressurization quench), infrared laser irradiation of the burning surface to increase burning rates, development of inherently unstable combustion chamber geometries (producing either local pressure or velocity perturbations), and electrically sensitive hydroxylammonium nitrate (HAN)-based formulations in which burning rate is controlled by a voltage potential. However, these techniques are limited in that they either can only be used with low flame temperature (low specific impulse) propellants, result in low propulsion system mass fraction (pintle), are only capable of producing a single perturbation, or are formulation specific.

Posted in: Briefs, Aerospace, Energy, Materials, Power Transmission, Propulsion, RF & Microwave Electronics, Instrumentation
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NIF Experiments Support Warhead Life Extension

It was a normal morning for design physicist Madison Martin at Lawrence Livermore National Laboratory (LLNL). At 7:45 a.m., she settled into her classified workstation with a cup of tea to check the results of a numerical calculation she ran overnight. If the calculations proved correct, the experiment she was designing on the National Ignition Facility (NIF) would deliver the data her colleagues needed to verify that a refurbished nuclear warhead would perform as expected.

Posted in: INSIDER, News, Data Acquisition, Defense, Materials, Data Acquisition, Detectors, Sensors
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