US State Dept. clears $5.6 billion sale of F-35s for Czech Republic

Sur le même sujet

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  16 juillet 2020 | International, Aérospatial

  National Reconnaissance Office launches “revolutionary” satellites from Virginia

  Nathan Strout The National Reconnaissance Office successfully launched four classified payloads into orbit July 15 from NASA's Wallops Flight Facility — the agency's first dedicated launch from the Virginia facility. NRO is in charge of acquiring, launching and operating the nation's intelligence satellites, and while the agency does not typically reveal the details or purpose of its classified satellites, the agency's director noted that the four payloads will demonstrate revolutionary capabilities. “NROL-129 represents a collaboration between the NRO and our industry partners to design, build, launch and operate a system of satellites that will demonstrate revolutionary capabilities of value to the nation and our allies,” said NRO Director Chris Scolese. “Despite facing challenges in 2020, we have found new and better ways to collaborate with our partners from a distance, relentlessly pursuing our mission and denying sanctuary to our adversaries.” The four NRO-built payloads — dubbed NROL-129 — were launched aboard a Northrop Grumman Minotaur IV rocket at 9:46 a.m. ET. This was NRO's first launch with a Northrop Grumman Minotaur IV, a rocket capable of delivering payloads of up to 3,814 lbs into low Earth orbit. The first three stages of the four stage, 78-foot tall rocket utilize solid rocket motors taken from decommissioned Peacekeeper ICBMs. The launch was acquired under the U.S. Air Force's Orbital/Suborbital Program-3, a contract mechanism built to take advantage of the growing commercial small launch sector. This was NRO's third launch of 2020 and its first to take place on U.S. soil. The previous two launches, taking place respectively in January and June, were launched aboard Rocket Lab Electron rockets from the company's New Zealand facility. The agency's next mission, NROL-44, is set to launch in August from Cape Canaveral Air Force Station, Florida. https://www.c4isrnet.com/battlefield-tech/space/2020/07/15/national-reconnaissance-office-launches-revolutionary-satellites-from-virginia/

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  14 août 2019 | International, Aérospatial

  What could a military do with this flying saucer?

  By: Kelsey D. Atherton This may be a flying saucer, but don't call it a UFO. Carefully named, the All DIrections Flying Object, or ADIFO, is instead a saucer-like contraption, a flying prototype built at exploring the aerodynamic potential of an alien craft. It is, at its core, an omnidirectional flying wing built around a quadcopter with jets attached. Its designers see a future for the airframe as an unmanned combat aerial vehicle. In a video posted July 1, a narrator discusses the design process and aerodynamics of the craft. Like many VTOL tools built on a quadcopter frame, ducted fans provide initial lift and mobility at low altitudes and low speeds. The addition of vectored jets on the rear of the craft, combined with four vertical vents and four side-facing vents, promising greater maneuverability at high speeds. The ADIFO is the invention of Romanian engineer Razan Sabie in conjunction with Iosif Taposu, a scientist with a long career in aerospace research for the Romanian government. “The aerodynamics behind this aircraft is the result of more than two decades of work and is very well reasoned in hundreds of pages and confirmed by computer simulations and wind tunnel tests,” Sabie told Vice, in the pair's first American interview. That story explores both the specific nature of the ADIFO, and the long and mostly failed history of flying saucer design. Like many other ideas for the first decades of aviation, the possibility of operating the craft without a human on board opens up greater potential in what an airframe can actually do. Human pilots are subject to the limitations of a body and perception, and a flying disk changing directions suddenly at high speed is not the ideal place for a human to be. Uncrewed craft can take on novel forms, and execute turns and twists beyond those human limits. While maneuverability is likely the primary selling point for a future role as combat aircraft, the smooth and fin-free form could easily have stealth characteristics built in, and could be further adapted by a dedicated team to fully realizing that stealth flight. What might a military planner or designer do with such a machine? The proof-of-concept offers little in the way of information about storage space or sensors. With wide enough lenses, a handful of cameras could match the circular symmetry of the vehicle and provide and omnidirectional surveillance presence. The high speeds and potentially low radar profile suggest a role akin to earlier, Cold War spy planes, taking specific pictures in contested space and returning before anti-air systems can act. And as with any aircraft, the potential is likely there for it to release an explosive payload, taking the flying saucer from an extraterrestrial fear to a terrestrial threat. ADIFO might not be the future of anything. The project's home page says the team is still attracting partners, and aviation history is littered with proofs-of-concept that failed to materialize in a meaningful way. Yet there is something to the idea of a flying saucer working the moment it no longer has to transport a human. It is an old aviation frontier that likely warrants further exploration. https://www.c4isrnet.com/unmanned/2019/08/12/what-might-a-military-want-with-a-romanian-flying-saucer/

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  11 octobre 2023 | International, Sécurité

  Canada sending more artillery shells, aircraft bombs to Ukraine, defence minister says | CBC News

  Canada is sending more munitions to Ukraine, including artillery rounds and aircraft bombs, Defence Minister Bill Blair announced in Brussels on Wednesday as Ukrainian President Volodymyr Zelenskyy attended the meeting of allies who are helping am his country.