10 décembre 2024 | International, Naval
26 juin 2018 | International, Aérospatial
General Atomics to make first transatlantic flight of a MALE RPA
Written by Wings Staff
General Atomics Aeronautical Systems Inc. plans to make the first-ever transatlantic flight of a Medium-altitude, Long-endurance (MALE) Remotely Piloted Aircraft (RPA). GA-ASI's company-owned MQ-9B SkyGuardian RPA is scheduled to fly from the company's Flight Test and Training Center in Grand Forks, North Dakota, to Royal Air Force (RAF) Fairford in Gloucestershire, UK.
The aircraft will then be on static display July 13 to 15 for the Royal International Air Tattoo (RIAT) airshow being held at RAF Fairford. The flight and display will help commemorate the RAF's centenary celebration (RAF100).
“GA-ASI is proud to have supported the RAF over the past decade with our MQ-9 Reaper. In honour of the RAF100 celebration, and to demonstrate a new standard in RPA flight endurance, we will fly SkyGuardian across the Atlantic,” said Linden Blue, CEO, GA-ASI. “Given the distinguished 100-year history of the RAF, we believe that this flight is an appropriate way to celebrate the RAF's position as a leader in innovation.”
In 2017, GA-ASI and the RAF marked the 10-year anniversary of RAF MQ-9 operations, which coincided with the RAF completing 100,000 flight hours with its Reaper force. The entire Reaper fleet has completed over two million flight hours to date and is comprised of over 300 aircraft within the NATO alliance. The RAF is acquiring MQ-9B SkyGuardian as part of its PROTECTOR RG Mk1 program.
MQ-9B is the latest evolution of GA-ASI's multi-mission Predator B fleet. GA-ASI named its baseline MQ-9B aircraft SkyGuardian, and the maritime surveillance variant SeaGuardian. MQ-9B is a certifiable (STANAG 4671-compliant) version of the MQ-9 Predator B product line.
The company explains its development is the result of a five-year, company-funded effort to deliver a RPA that can meet the airworthiness type-certification requirements of various military and civil authorities, including the UK Military Airworthiness Authority (MAA) and the U.S. FAA. GA-ASI explains type-certification, together with an extensively tested collision avoidance system, will allow unrestricted operations in all classes of civil airspace.
Several important MQ-9B milestones were achieved in recent months, explains the company, including the first FAA-approved flight for a company-owned RPA through non-segregated civil airspace without a chase aircraft, and an endurance record of more than 48 hours of continuous flight.
As part of the transatlantic flight, GA-ASI has partnered with Inmarsat, a provider of global mobile satellite communications (SATCOM) services. Inmarsat's SwiftBroadband SATCOM will be used by the MQ-9B's ground control station to communicate and control the aircraft and also will be used in the RPA's final configuration for capabilities such as automatic takeoff and landing.
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17 juin 2019 | International, Autre défense
Enabling Revolutionary Nondestructive Inspection Capability
X-rays and gamma rays have a wide range of applications including scanning suspicious maritime shipping containers for illicit materials, industrial inspection of materials and processes, and medical diagnostic and therapeutic procedures. Current technologies, however, are not ideal. X-rays produce a continuum of energies that limit their inspection and diagnostic performance, and gamma rays can only be produced at specific energies unique to a given radioactive isotope. DARPA today announced its Gamma Ray Inspection Technology (GRIT) program. GRIT seeks novel approaches to achieve high-intensity, tunable, and narrow-bandwidth sources of gamma ray radiation in a compact, transportable form factor that would enable a wide range of national security, industrial, and medical applications. A Proposers Day webinar describing the goals of the program is scheduled for July 8, 2019. “What we're trying to do in GRIT is transform the use of x-rays and gamma rays,” said Mark Wrobel, program manager in DARPA's Defense Sciences Office. “Current sources of gamma rays, like Cobalt-60 or Cesium-137, are not very flexible. They require special licenses to possess and only emit gamma rays at very specific energies. What we desire is a source of very high-energy photons that we can tune to match the application we need. This ranges from more effective detection of illicit cargo, to a more informative medical x-ray.” GRIT aims to provide a source of tunable, pure x-rays and gamma rays from tens of keV (kilo-electron volts) up through over ten MeV (mega-electron volts). Currently, tunable and narrow bandwidth gamma ray sources only exist at highly specialized user facilities best suited for basic research and are not able to support broad practical applications. Shrinking these photon sources to a transportable system is a major goal and challenge of the GRIT program. GRIT technology could make possible a range of new inspection and diagnostic protocols. In medical and industrial radiography, for example, GRIT could enable revealing specific elemental and material content, such as calcium in bones or specific metals in cargo. A typical x-ray only shows differences in density in the object being inspected – whether a piece of luggage at an airport, or an individual at a doctor's office. If successful, a GRIT x-ray source could be tuned to detect and quantify the concentration of specific elements of interest, such as the amount of calcium in a given bone x-ray, enabling radiologists to actually see bone composition. Tuning energy between 10s of keV to over 100 hundred keV would allow detection of specific elements that might be of interest in characterizing novel materials and processes at micron scales. These techniques would be relevant to defense applications including non-destruction inspection of novel additively manufactured materials and alloys for their elemental composition. At energy levels in the MeV range, gamma ray photons have high enough energy to actually interact with the nuclei of atoms. Whereas x-rays work by interacting with the shells of atoms, GRIT would be able to stimulate the nucleus of an atom to bring about an effect called nuclear resonance fluorescence, a sort of “fingerprint” that is unique to each isotope on the periodic table. “With GRIT, you could probe and detect specific isotopes of interest by fine-tuning the photon energy to minimize background noise and take advantage of the nuclear resonance fluorescence phenomenon,” Wrobel said. “Those isotopes could be rare-earth elements of interest or special nuclear materials. To be able to definitively say, ‘Yes, there's highly enriched uranium in this object' and be able to characterize how much is present would be a significant leap forward over our current capabilities.” DARPA is seeking expertise in a range of technologies on the GRIT program including advanced accelerator technology, high-energy laser systems, novel control systems, and new x-ray and gamma ray detector technology. To register for the GRIT Proposers Day webinar, visit: https://go.usa.gov/xmh28. GRIT's focus on new, compact photon sources for inspection complements DARPA's Intense and Compact Neutron Sources (ICONS) program, which is developing compact neutron sources. The two technologies would work in tandem, yielding a very robust inspection capability. Caption: The Gamma Ray Inspection Technology (GRIT) program seeks tunable gamma ray sources for a host of national security, industrial, and medical applications. https://www.darpa.mil/news-events/2019-06-14
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3 juin 2024 | International, Sécurité
Beware: Fake Browser Updates Deliver BitRAT and Lumma Stealer Malware
Beware of fake browser updates! Cybercriminals are using this tactic to deliver dangerous malware like BitRAT and Lumma Stealer.