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Shielded twisted pair cables

W. L. Gore & Associates’ Shielded Twisted Pair Cables reduce weight while maintaining reliable signal integrity. The cables meet ANSI/NEMA WC27500 standards for aerospace and industrial electrical cable, type 24, and they maintain high-speed com munication between avionics transmitters and receivers. They are made from fluoro-polymers that reduce cable jacket weight by as much as 37% when compared to ETFE materials, and 50% when compared to FEP. The materials also result in smaller cable diameters, which translate to significantly smaller, lighter, and higher-density cable bundles. More detail at http://articles.sae.org/12625.

Posted in: Products, Aerospace, Defense
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Atomic force microscopy imaging

Asylum Research’s blueDrive photothermal excitation is available on its Cypher atomic force microscopes. blueDrive makes tapping mode imaging simple, stable, and accurate. It replaces the conventional piezoacoustic excitation mechanism, instead using a blue laser to directly excite the AFM cantilever photothermally. This results in an ideal cantilever drive response in both air and liquids, which provides significant performance and ease-of-use benefits for tapping mode imaging. More detail at http://articles.sae.org/12626.

Posted in: Products, Aerospace, Defense
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Two-component electrically conductive epoxy

Two-component electrically conductive epoxy Made with silver-coated nickel filler, Master Bond EP79FL is a two-part, electrically conductive epoxy for bonding, sealing, and coating applications. It has a low-volume resistivity of less than 0.005 ohm-cm and is suitable for applications in the electronic, aerospace, computer, semiconductor, and electrooptic industries. In addition to its electrical properties, the system is flexible upon curing, enabling its use in applications involving thermal cycling, and thermal and mechanical shocks. More detail at http://articles.sae.org/12627.

Posted in: Products, Aerospace, Defense
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Custom dial face designs

Palmer Wahl Instrumentation Group's custom dial faces—its BiMetal and Direct Drive Dial thermometers, as well as its pressure gauges with screw-on bezels—may be customized, no matter the dial size. Customers may submit their own ideas and artwork, or they may work with the firm’s in-house engineering services to design a model specific to their application and needs. Options for customizing include dual scales with different units of measure, colored scales, high-visibility markings, color pie-wedge sectors, bands, or lines. More detail at http://articles.sae.org/12628.

Posted in: Products, Aerospace, Defense
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Hybrid copter is first of its kind

Regulatory authorities in Germany decided to develop a new aircraft category called volocopter to accommodate the new 18-motor VC200. Read more at http://articles.sae.org/12585.

Posted in: News, Aerospace, Defense
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Canadian researchers employ recycled carbon-fiber mats to produce thermoset composites

Carbon-fiber-reinforced thermoset composites continue to be difficult to recycle, as they are a complex mixture of different materials such as thermosetting polymers, carbon fibers, and fillers. Researchers from the Universite Du Quebec at Montreal, Bell Helicopter Textron Canada, and the National Research Council Canada investigated using carded recycled carbon-fiber mats and epoxy resin to fabricate thermoset composite plates. Read more at http://articles.sae.org/12559.

Posted in: News, Aerospace, Defense
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Overcoming design challenges of next-generation UASs

Next-generation unmanned air systems will require more performance and must integrate increasing capabilities for guidance control, weaponry, and surveillance—all in a very limited space. Read more at http://articles.sae.org/12546.

Posted in: News, Aerospace, Defense
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Heated air technology helps optimize CFRP assembly

Assembly of large and complex carbon-fiber-reinforced plastic (CFRP) components requires the use of liquid resin-based materials for applications such as shimming and aerodynamic sealing. These materials generally require curing times up to 12 h; heated air technology can reduce that time to 2 h. Read more at http://articles.sae.org/12510.

Posted in: News, Aerospace, Defense
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A holistic approach to aircraft assembly

It is the "automation and tooling partner" who offers a performance-based and advanced manufacturing systems integration approach that offers the next step-change, say Bombardier Aerospace and AIP Aerospace Odyssey. Read more at http://articles.sae.org/12568.

Posted in: News, Aerospace, Defense
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Formation and Characterization of Gold Nanoparticles

One-dimensional nanowires are of increasing interest due to their size, physical properties, and other applications in opto-electronics. For example, nanowires have already been used in light-emitting diodes and lasers, photo-detectors, resonant tunneling diodes, field-effect and single-electron transistors, and biochemical sensors. In addition, nanowires are useful because they can be grown almost dislocation-free due to their nano dimension. When dislocation- free nanowires nucleated on the substrate merge to form a continuous film, voids are left underneath, which act as sinks for dislocations, allowing other structures to be grown stress-free on top of the nano-engineered buffer layer.

Posted in: Briefs, Materials, Wiring, Nanomaterials
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