No matter how advanced a bolt-action rifle is, it represents 19th-century technology, says Bret Boyd, vice president of sales and marketing at TrackingPoint Inc., a company that is using 21st-century technology to make this type of weapon far more accurate.
In the future, if a rogue nation is caught secretly testing a nuclear weapon, and is confronted with credible evidence about blast size, location, date and time of detonation, satellites and radio telescopes may get the credit. Researchers at Ohio State University and astronomers at the U.S. Naval Research Laboratory have discovered that GPS and GNSS (Global Navigation Satellite System) satellites, along with the Very Large Array (VLA) of 27 radio telescopes in New Mexico, can detect atmospheric disturbances caused by nuclear blasts.
Ceramic materials have become viable—even better—replacements for conventional metallic armor plates on tanks, personnel carriers and other armored vehicles. They not only resist penetration by most explosive projectiles encountered on a battlefield, but provide considerable weight savings, which in turn increase the agility and maneuverability of these multi-ton platforms. Ceramic plates, however, have one significant problem: weakness in the adhesive bond that connects them to their composite backing material, which reduces their effectiveness.
NEW YORK – The state-of-the-art in military energetics is HMX, a powerful material that is dense, thermodynamically stable and low in sensitivity — in other words, a devastating explosive that is safe to handle. Research by the University of Michigan and Lawrence Livermore National Laboratory (LLNL) indicates that the explosiveness of HMX can be increased with no trade-off in sensitivity, by combining it with an energetic known as CL-20, which while powerful, is by itself too sensitive for use.
The state-of-the-art in military energetics is HMX, a powerful material that is dense, thermodynamically stable and low in sensitivity—in other words, a devastating explosive that is safe to handle.
Research by the University of Michigan and Lawrence Livermore National Laboratory (LLNL) indicates that the explosiveness of HMX can be increased with no trade-off in sensitivity by combining it with an energetic known as CL-20, which while powerful, is by itself too sensitive for use.
As contractors make greater use of composites and high-strength metals in aircraft structures, attention is focusing on ways of improving manufacturing productivity and reducing per-part cost. One technique to emerge for the machining of parts is cryogenic cooling, which can increase machining speed, reduce cutting force, extend cutting tool life, and lower the time and cost required to finish components.
As more users adopt cloud-based computing networks to achieve bandwidth efficiency, hardware reduction and other benefits, issues arise over the ability to access different operating systems in the cloud, host multiple domains, assure data resilience and, importantly, maintain security. Three companies have partnered to develop a system that they say is innovative in that it provides a secure, scalable, redundant platform for cloud networks in sensitive environments, including tactical military use.
As work proceeds on the first of the Royal Navy's two Queen Elizabeth-class aircraft carriers, authorities at what will be their home port, HMNB Portsmouth, England, have approved a design for the Portsmouth Approach Channel, the body of water through which the 65,000-tonne (71,630-ton) ships will transit. The carriers will be the largest vessels ever docked at Portsmouth. As a result, based on a design developed by BMT Isis Ltd., the Royal Navy will dredge a new approach that is 30 ft. deeper than the current one. The draft of both ships is 36 ft.
The ScanEagle mini-UAV (unmanned aerial vehicle), in use by the U.S. Navy, has logged its first flight powered by a hydrogen fuel cell. The UAV, developed by Boeing subsidiary Insitu Inc. of Bingen, Wash., flew 2.5 hr. with the propulsion module. The flight test is significant since the U.S. Defense Department expects fuel cells to play an increasingly important role in improving the mission capability of UAVs and other platforms. One benefit of fuel cells for UAVs such as ScanEagle is reduced weight.
The U.S. Air Force is looking for one good aluminum alloy. The service wants a higher-strength alternative to alloy 2014, which is widely used in aerospace components and fittings, as well as military vehicles and weapons, due to its machining and forming properties. It also wants an alternative to alloy 2040, developed and produced by Alcoa. This material has enhanced properties compared with 2014 that reduce landing-gear weight, but it's a single-source metal, and costly.
As roadside bombs proliferate, the danger to vehicles isn't just on the battlefield, but city streets. Companies are turning to commercial products to respond to the threat. Cassidian, a division of EADS, offers a Convoy Protection Jammer to counter roadside bombs. The device uses Cassidian's Smart Responsive Jamming Technology to detect and disrupt signals commonly used to detonate bombs— those in the 20-mhz-6-ghz frequency range. Once detected, the device transmits jamming signals in real time that match the hostile frequency.
"He will do great," predicted NASA astronaut Barry "Butch" Wilmore, who returned to Earth after 5 1/2 months on the ISS earlier this month. Wilmore watched Scott Kelly's lift off from NASA's Mission Control in Houston....More
Cold War kids like me still remember the Open Skies treaty, the 1992 agreement by members of NATO and the then Warsaw Pact to allow observation flights over their territory as a confidence-building measure....More
"We are discovering all kinds of exotic planets, worlds that have oceans of molten rock, worlds that have not one but two stars rising in the East and setting in the West," said Natalie Batalha, Kepler mission scientist....More
As the U.S. Marine Corps continues to tack back to its expeditionary core and the U.S. remains on course for its Asia-Pacific rebalance, the question of the force’s relevance is again coming to the fore....More