Defense

The Future of Exploration Starts With 3D Printing

Last year, engineers at NASA’s Marshall Space Flight Center in Huntsville, AL, tested an additive manufacturing process that is being used to make some of the parts for NASA’s new rocket, the Space Launch System (SLS), more efficiently and affordably without compromising performance and safety. Selective laser melting (SLM) is a 3D printing process used to create complex parts for the engine and other components of the rocket. Four RS-25 engines and two solid rocket boosters will power the core stage of the SLS.

Posted in: Articles, Aerospace, Defense, Additive manufacturing, Launch vehicles

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Reliable VFD Cables Boost Productivity, Minimize Downtime

From fans and blowers to 24/7 production line equipment, variable frequency drives (VFDs) are a mainstay of the industrial world due to their remarkable ability to improve the efficiency of motor-driven equipment. As part of a complete VFD package, high quality cable is one of the most important components in terms of achieving maximum productivity and minimizing downtime. When designing a robust VFD cable, the materials used in its production are critical to ensuring that the cable’s electrical properties will guarantee peak performance. For system engineers and others involved in specifying VFDs, cable quality should be one of the most decisive factors.

Posted in: White Papers, Aerospace, Defense, Mechanical Components, Mechanics, Motion Control

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2015 Create the Future Design Contest: Aerospace & Defense Category Winner

N5 Filo (First-In-Last-Out): An Ultra-Small, Low-Cost Hazardous Gas Detector Using Novel Chip-Scale Chemical Sensor Technology Abhishek Motayed, Ratan Debnath, Baomei Wen, Audie Castillo, Ting Xie, and Gavin Liu, N5 Sensors Inc., Rockville, MD N5 Sensors is a University of Maryland spinoff that is commercializing a disruptive chipscale gas sensor technology for industrial, environmental, and safety monitoring. The microsensor arrays on a single chip could replace multiple conventional macro-scale gas sensors used in portable multi-gas detectors. These new sensors are small, accurate, low power, and capable of detecting multiple gases at the same time. Using a patent-pending sensing architecture, N5 is working to develop low-cost, ultra-compact, multi-gas detectors that can be interfaced with mobile devices, allowing industrial workers, first-responders, and soldiers to assess the dangers of their surroundings rapidly and accurately in real time using their smartphones or other mobile devices.

Posted in: Articles, Aerospace, Defense, Design processes, Sensors and actuators, Displays, Product development, Collision avoidance systems, Aircraft

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Modern CMOS Cameras as Replacements for CCD Cameras

Many users of CCD sensors are asking about the advantages of the latest CMOS sensors, particularly if they have been using CCD-based cameras. The two sensor technologies, a comparison of the new CMOS sensors and existing CCD sensors, and tips for when it makes sense to select a new camera with CMOS sensors are provided in this article, as well as what to expect after integration.

Posted in: Articles, Aerospace, Defense, Imaging and visualization, Sensors and actuators

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Mesh: Lightweight Grid Middleware Using Existing Secure Shell Infrastructure

This program has applications in homeland security and intrusion prevention. Ames Research Center, Moffett Field, California A software-based innovation called Mesh was developed that provides a single sign-on capability to the built-in public key authentication mechanism of Secure Shell (SSH) using system call interposition. Mesh is a secure, lightweight grid middleware. Each Mesh installation is dedicated to serving a particular virtual organization (VO), which is defined to be a dynamic collection of individuals, institutions, and resources. Mesh allows individuals in one VO to execute SSH remote commands on Mesh-accessible resources within other cooperating VOs using a single Mesh SSH private key generated at the local VO.

Posted in: Briefs, Defense, Software, Computer software and hardware, Security systems

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Army Equips Stryker Unit With New Communications Technology

The Army's Stryker vehicle, designed to quickly move soldiers into a combat zone, is swift and mobile. Now its communications equipment will be, too.

Posted in: News, Communications, Wireless, Defense, RF & Microwave Electronics

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New Serenity Payload Detects Hostile Fire

Two government-developed sensors are working together to increase the security of deployed soldiers. The Firefly and Serenity sensors employ government developed algorithms, software, and hardware to locate hostile fire around a base. The technology, a joint effort between the Army Aviation Research, Development and Engineering Center, or AMRDEC, and the Army Research Lab, referred to as ARL, has been under development for more than a decade.

Posted in: News, Defense, Electronics & Computers, Cameras, Imaging, Optics, Photonics, Detectors, Sensors

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