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One Component Epoxies: Versatility and Convenience

To understand one part epoxy systems, you need to know how a two part system works. In this white paper, we explore how a one part system is constructed, how it can and should be used, and how it can be modified to achieve a variety of performance properties. Also learn how technological advances have resulted in innovative, unique systems.

Posted in: Materials, White Papers

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Coming Soon - Case Studies with poly(p-xylylene) polymers Solving Friction Challenges and Protecting Critical Components

At Curtiss-Wright, we support leading edge technologies that are relied upon to enhance safety, reliability, and performance in demanding environments. Our parylene coating services teams support the work of engineers and scientists around the world to develop solutions to complex challenges.

Posted in: Upcoming Webinars

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Will we build a floating city above Venus?

This week's Question: NASA recently proposed a mission that one day may send astronauts, via a balloon, toward Venus' upper-atmosphere to research the possibility of a "cloud city community." Although the waterless planet has an unforgiving temperature of 1,000 degrees Fahrenheit, the clouds of Venus present an ideal spot for humans to roam from a spacecraft. The conditions at 31 miles above the surface are about the same pressure and atmosphere as Earth. The High Altitude Venus Operational Concept, or HAVOC, mission would start with a series of phased exploration sorties, followed by a robotic mission, a crewed ride, and the deployment of an uncrewed robotic airship in the atmosphere. NASA researchers say that if the phases of the mission are successful, permanent presence in Venus' atmosphere is possible. What do you think? Will we build a floating city above Venus?

Posted in: Question of the Week

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Researchers Craft Vivid Colors on Ultra-Thin Coatings

A new coating exploits interference effects in thin films, creating a range of vivid colors. The new technique coats a metallic object with an extremely thin layer of semiconductor, just a few nanometers thick. Although the semiconductor is a steely gray color, the object ends up shining in vibrant hues.The ultrathin coatings could be applied to essentially any rough or flexible material, from wearable fabrics to stretchable electronics.A machine called an electron-beam evaporator applies the gold and germanium coating. The paper sample is sealed inside the machine's chamber, and a pump sucks out the air until the pressure drops to a staggering 10-6 Torr (a billionth of an atmosphere). A stream of electrons strikes a piece of gold held in a carbon crucible, and the metal vaporizes, traveling upward through the vacuum until it hits the paper. Repeating the process, a second layer is added. A little more or a little less germanium makes the difference between indigo and crimson."This is a way of coloring something with a very thin layer of material, said Mikhail Kats, postdoctoral researcher at the Harvard School of Engineering and Applied Sciences, "so in principle, if it's a metal to begin with, you can just use 10 nanometers to color it, and if it's not, you can deposit a metal that's 30 nm thick and then another 10 nm. That's a lot thinner than a conventional paint coating that might be between a micron and 10 microns thick.” SourceAlso: Read about other Materials and Coatings.

Posted in: News

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NASA Tests Gecko Grippers in Microgravity

Scientists at NASA's Jet Propulsion Laboratory in Pasadena, California, are working on adhesive gripping tools that could grapple objects such as orbital debris or defunct satellites that would otherwise be hard to handle.The gecko gripper project was selected for a test flight through the Flight Opportunities Program of NASA's Space Technology Mission Directorate. As a test, researchers used the grippers in brief periods of weightlessness aboard NASA's C-9B parabolic flight aircraft in August.The gripping system developed by Parness and colleagues was inspired by geckos, lizards that cling to walls with ease. Geckos' feet have branching arrays of tiny hairs, the smallest of which are hundreds of times thinner than a human hair. This system of hairs can conform to a rough surface without a lot of force. Although researchers cannot make a perfect replica of the gecko foot, they have put "hair" structures on the adhesive pads of the grippers.The synthetic hairs, also called stalks, are wedge-shaped and have a slanted, mushroom-shaped cap. When the gripping pad lightly touches part of an object, only the very tips of the hairs make contact with that surface.SourceAlso: Learn about Microgravity Storage Vessels for Cohesive Regolith.

Posted in: News

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Software Defined Radio Handbook

Software Defined Radio has revolutionized electronic systems for a variety of applications that include communications, data acquisition and signal processing. Recently updated, this handbook shows how DDCs (Digital Downconverters), the fundamental building block of software radio, can replace legacy analog receiver designs while offering significant performance, density, and cost benefits.

Posted in: Electronics & Computers, White Papers

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High-Speed A/Ds for Real-Time Systems

Recently updated, this handbook reviews the markets and technology for A/Ds with sampling frequencies higher than 100 MHz; it discusses sampling and filtering techniques and new FPGA technology for A/Ds; typical high speed A/D products are presented, along with some high-speed data acquisition applications.

Posted in: Electronics & Computers, White Papers

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