Defense

Scientists Turn Handheld JCAD into Dual-Use Chemical, Explosives Detector

Scientists at the U.S. Army Edgewood Chemical Biological Center recently gave the Joint Chemical Agent Detector (JCAD) the ability to detect explosive materials. The original JCAD was developed and fielded to U.S. Forces nearly 25 years ago, to serve as a portable, automatic chemical warfare agent detector. Currently there are approximately 56,000 chemical warfare agent detecting JCADs in service within the Department of Defense. However, recent needs have required scientists to find ways to create a similar portable technology to detect explosive materials. According to the Army, "Future Army forces require the capability to provide support to unified land operations by detecting, locating, identifying, diagnosing, rendering safe, exploiting, and disposing of all explosive ordnance, improvised explosive devices, improvised/homemade explosives, and weapons of mass destruction." Funded through an Army Technology Objective (ATO) program starting in 2010, under the requirement to assess which existing detectors could also detect explosives, ECBC's Point Detection Branch began to research different options. Since so many JCADs are already in the hands of warfighters across all four services, the team explored the possibilities with that technology. ECBC Point Detection Branch handled the technical evaluation of the unit in collaboration with Smiths Detection, who is building the parts for the new capability. While working to make the JCAD an explosives detector, the team had to overcome several challenges. On a programmatic level, the ATO requirement had restrictions against modifying the existing JCAD hardware. Also, the JCAD needed to maintain its original chemical warfare agent detector purpose. Aside from the ATO requirements, making a chemical warfare agent detector into an explosives detector had some scientific challenges. The original JCAD is designed to detect vapors. However, explosive materials are usually low vapor pressure solids. ECBC scientists had to figure out how the JCAD could detect solid explosive materials, without changing the hardware or original intent of the detector. Given these parameters the scientists sought to determine how to modify this detector while essentially keeping it the same. "Many of the emerging chemical threats and explosives share the challenge of presenting little to no detectable vapor for sampling. By conducting research into the detection of solid explosive residues, we have learned valuable lessons that are equally important for detecting nonvolatile solid and liquid chemical agent residues as well," said Dr. Augustus W. Fountain III, senior research scientist for chemistry. The add-on pieces are a new JCAD Rain Cap with a Probe Swab and an inlet. Within the JCAD itself, scientists added two on-demand vapor generators: a calibrant and a dopant. The dopant changes the chemistry of the detector so that it can detect explosives easier. To convert an ordinary JCAD into a JCAD Chemical Explosive Detector (JCAD CED), the existing rain cap is replaced with one that has a new inlet. Once in place, scientists wipe any surface using the probe swab, which then retracts back into the inlet. With a simple button push, the probe swab tip with the explosives sample heats up to a certain temperature, vaporizing the explosive residue. These additional features allow an ordinary JCAD to now have the role of a portable, automated explosives detector. The swab allows users to pick up often-invisible residue from any surface and analyze it. The explosive residue can be transferred and easily detected using the instrument. The JCAD CED can already detect roughly a dozen compounds including TNT, RDX and EGN. Future efforts could increase the number of detectable compounds. Scientists plan to determine the amount of explosives that can be detected and develop a concept of operations. Other goals include developing a methodology for detecting homemade explosives, and reaching a technology readiness level 6. JCAD CED will be demonstrated in a fiscal year 2015 military utility assessment. Source:

Posted in: Sensors, Detectors, Defense, News

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Adaptive Zoom Riflescope Prototype Has Push-Button Magnification

When an Army Special Forces officer‑turned engineer puts his mind to designing a military riflescope, he doesn’t forget the importance of creating something for the soldiers who will carry it that is easy to use, extremely accurate, light‑weight and has long‑lasting battery power. The result is the Rapid Adaptive Zoom for Assault Rifles (RAZAR) prototype, developed by Sandia National Laboratories optical engineer Brett Bagwell. At the push of a button, RAZAR can toggle between high and low magnifications, enabling soldiers to zoom in without having to remove their eyes from their targets or their hands from their rifles.

Posted in: Photonics, Optics, Defense, News

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Killer Robots - Army Studies Challenges of Remote Lethality

The military has used and experimented with robots that perform functions such as scouting and surveillance, carrying supplies and detecting and disposing of improvised homemade bombs. However, when it comes to integrating lethality, such as a weapon capable of firing 10 rounds per second onto an unmanned ground vehicle, issues arise such as safety, effectiveness and reliability, as well as military doctrine on how much human involvement is required.

Posted in: Communications, Machinery & Automation, Robotics, Defense, News

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Thirsty? There’s an App for That

Clean, potable water is one thing the world universally cannot live without. It hydrates. It cleans. It keeps us alive and well. That makes water very valuable to soldiers. However, as many mission planners know, water planning can be a nightmare. Too much water can strain already heavy combat loads, perhaps forcing some soldiers to pack too little in favor of a lighter pack. When soldiers don't have enough water, dehydration could set in, decreasing performance and increasing the risk of serious heat illnesses. To help solve this logistical problem, researchers from the U.S. Army Research Institute of Environmental Medicine’s (USARIEM) Thermal and Mountain Medicine Division and Massachusetts Institute of Technology’s Lincoln Laboratory worked to develop an app that will help unit leaders accurately predict water needs with the goal of minimizing the burden of water transport and sustaining hydration. The app is designed to satisfy the military’s desire for paperless guidance that is simple, accurate, mission-specific and available in real time.

Posted in: Electronics & Computers, PCs/Portable Computers, Software, Defense, News

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University Opens New Ballistics and Impact Dynamics Lab

Wichita State University’s National Institute for Aviation Research recently opened a new ballistics and impact dynamics research lab in the former Britt Brown Arena at the Kansas Coliseum. The new ballistics lab, part of NIAR’s environmental Test Labs, uses a custom built ballistic firing device to propel 22-50 caliber rounds into components inside a concrete containment building. The test is designed to simulate the impact of a structural failure on the aircraft.

Posted in: Cameras, Imaging, Test & Measurement, Monitoring, Aerospace, Aviation, Data Acquisition, Defense, News

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Army Researchers Enable Night Lethality

In science fiction, technology problems are solved with the stroke of a writer's pen. In reality, science and technology research takes time, and a lot of effort.

Posted in: Electronics & Computers, Imaging, Displays/Monitors/HMIs, Sensors, Defense, News

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New DARPA Technologies Could Make Cyber Warfare a Reality

Three years after the Defense Department named cyberspace a new domain of warfare, the Defense Advanced Research Projects Agency is unveiling technologies that could soon make it possible for military leaders and warriors to plan and execute real-time cyber missions in a territory charted so far only by machines.

Posted in: Electronics & Computers, Imaging, Displays/Monitors/HMIs, Communications, Defense, News

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