20 septembre 2023 | International, Terrestre, C4ISR, Sécurité
Australia is mulling which high-tech areas it will pursue alone or which may fall under AUKUS, as it ensures all its efforts focus on top warfighter needs.
15 juin 2021 | International, Terrestre
The vehicles will not go to a specific brigade, but rather divided among units to facilitate transportation and training, a military source with knowledge of the acquisition told Defense News.
27 août 2020 | International, Aérospatial
Imagine asmall aerial drone navigating a field with electrical power lines. How will it see them? More importantly how will it avoid this significant obstacle in its flight path? At the U.S. Army Combat Capabilities Development Command's Army Research Laboratory, researchers developed a novel sensor and software application to detect and avoid energized power lines in the vicinity of unmanned aerial system, or UAS. The goal is to provide autonomous systems sufficient time and distance to react, avoid wires and navigate follow-on maneuvers. Army researcher David Hull developed the innovative approach using a unique configuration of field and 3-D sensors, in conjunction with low-power processing methods. This resulted in detecting power lines and informing the device's autopilot to prevent collision with the wires. This method allows UAS equipped with these to use smaller, lower power and lower cost sensors to detect the location and Poynting vector (i.e. the directional energy flux density) of nearby power lines. This allows the UAS to autonomously avoid or navigate alongside the detected power lines. While existing wire-detection and wire-avoidance technologies that use radar and/or optical sensors have had commercial success, they are known to be expensive, bulky, and power-intensive with technical limitations. The detection algorithm developed at the lab will result in size, weight, power and cost reduction. By combining both sensing modalities in one sensor, Army researchers estimated the direction of power flow, something no traditional sensor can do, Hull said. The lab recently announced a patent license agreement with Manifold Robotics, a startup company based in New York, who will produce the new technology for drone-based commercial applications. Engineers and drone experts at Manifold Robotics said they intend to create a drone-based system that will detect power lines at a distance and determine their precise location to enable safe navigation. They said this will overcome the factors that limit the efficacy of drones in the vicinity of power lines and unleash their full potential for autonomous power line inspection as well as other Beyond Visual Line of Sight operations. From a military perspective, UASs are increasingly used by Soldiers for a variety of missions. In many cases, these drones must successfully operate in urban environments with a high number of power lines in and around the area. The development goal is to see significant improvement in the safe usage of aerial drones in close proximity to power lines and power grids. Researchers said they believe the licensed Army technologies will enable commercial and military drones to detect power lines at a greater distance. Additionally, the technology is expected to accelerate the development of drone applications such as power line inspection systems and freight delivery drones. https://uasweekly.com/2020/08/25/army-researchers-develop-breakthrough-sensors-for-small-drones/
22 mai 2020 | International, Naval
By Fernando Catta-Preta May 21, 2020 - Northrop Grumman has successfully manufactured and tested the first industry-built Very Lightweight Torpedo (VLWT) for the U.S. Navy. The prototype torpedo is based on the Pennsylvania State University Applied Research Laboratory's (PSU-ARL) design that was distributed to defense industrial manufacturers in 2016. Northrop Grumman, which independently funded the research and development, will offer the design-for-affordability improvements to this VLWT as Northrop Grumman's response for the Navy's Compact Rapid Attack Weapon program. Northrop Grumman‘s torpedo design and production legacy reaches back over 80 years to World War II through its Westinghouse acquisition. In 1943, Westinghouse won the Navy contract to reverse engineer a captured German electric torpedo and in 12 months began producing the MK18 electric torpedo, which turned the tide of the undersea warfare in the Pacific. Northrop Grumman has been at the forefront of torpedo design and production ever since, to include the current MK48 Common Broadband Advanced Sonar System (CBASS) heavyweight torpedo and MK50 Lightweight Torpedo. Today, Northrop Grumman is the only company in full rate production of MK54 and MK48 torpedo nose arrays and has delivered over 600 MK54 arrays and over 70 MK48 arrays to the U.S. Navy. Applying its engineering and manufacturing expertise, Northrop Grumman improved upon the VLWT baseline design to replace high-cost components and drive overall affordability, reproducibility and reliability. Those altered sections were built and tested using PSU-ARL's own test equipment for confidence. “The successful testing of the torpedo nose on the first try is a testament to Northrop Grumman's design-for-affordability approach, which will significantly reduce cost without sacrificing operational performance,” said David Portner, lead torpedo program manager, undersea systems, Northrop Grumman. Northrop Grumman assembled the prototype VLWT using a Stored Chemical Energy Propulsion System (SCEPS) manufactured by teammate Barber-Nichols, Inc., (BNI) of Denver, Colorado. “The nation needs advanced undersea warfare capabilities now more than ever," said Alan Lytle, vice president, undersea systems, Northrop Grumman. “We are ready to support fielding the VLWT which will increase subsea lethality and enable innovative concepts of operations for multiple warfighting platforms.” Northrop Grumman's manufacturing plan would span the country by building components in California, Utah, Minnesota, Colorado, West Virginia and Maryland. View source version on Northrop Grumman: https://news.northropgrumman.com/news/features/northrop-grumman-builds-very-lightweight-torpedo-for-us-navy