B-21 Development Applying Tough Lessons From B-2

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  4 février 2019 | International, Aérospatial

  Germany officially knocks F-35 out of competition to replace Tornado

  By: Sebastian Sprenger COLOGNE, Germany ― Germany's Ministry of Defence has officially ruled out the F-35 joint strike fighter as a choice to replace its aging Tornado fleet, Defense News has learned. An official from the ministry confirmed that the F-35 is not a finalist in the competition, which seeks a replacement for the 90-jet fleet. The news was first reported by German site AugenGeradeaus. The move is not altogether surprising. Berlin for some time has officially favored an upgraded version of the fourth-generation Eurofighter Typhoon, built by a consortium of Airbus, Leonardo and BAE Systems, as the Tornado replacement. The main argument is to keep European companies involved in building combat aircraft and, perhaps even more importantly, staying clear of disturbing Franco-German momentum in armaments cooperation. However, the decision leaves open the question of certification for nuclear weapons. The Typhoon is not certified to carry the American-made nuclear bombs that Germany, as part of its strategic posture, is supposed to be able to carry on its jets. Competing against the Typhoon is Boeing's F/A-18E/F Super Hornet. Before the German MoD confirmed that the F-35 was officially out of the running, Reuters on Thursday reported that the ministry was considering splitting the buy between the Typhoon and either the F-35 or Super Hornet. Ordering both the Typhoon and an American aircraft would make it easier to continue carrying out the NATO nuclear mission, while also lending support to the European industrial base. However, it could complicate logistics, adding more expense and forcing the German air force to maintain two supply chains. It is worth noting that despite complaints about the cost of keeping the ageing Tornados flying, keeping around a certain number of them always has been considered a painful, but not impossible, proposition among some defense experts. That is especially the case for the nuclear mission. “There does not have to be a nuclear Tornado replacement,” Karl-Heinz Kamp, president of the Federal Academy for Security Policy, a government think tank, told Defense News last August. He noted that any German government is acutely averse to the publicity surrounding Berlin's would-be atomic bombers. “That's why they will keep flying the Tornados, despite the price tag and despite having asked about a Eurofighter nuclear certification in Washington,” Kamp predicted at the time. German defense officials on Thursday evening stressed that no decisions had been made besides reducing the playing field to the FA-18 and the Eurofighter Typhoon. The Defense Ministry will request additional information from the respective manufacturers, Boeing and Airbus, on the issues of operations, economic viability and timing, these officials said. Germany's decision appears to have come at the surprise of F-35 manufacturer Lockheed Martin, which was not told by the ministry of the imminent announcement. “We have not been officially notified of a decision on Germany's future fighter,” Lockheed spokesman Mike Friedman said in an emailed response to a query. “The F-35 delivers unmatched value as the most capable and lowest life-cycle cost aircraft, while delivering the strongest long-term industrial and economic opportunities compared to any fighter on the market. As the foundation of NATO's next generation of air power, the F-35 is the most advanced aircraft in the world today, and includes Electronic Attack capabilities well beyond any specialized fourth generation aircraft.” Valerie Insinna in Washington contributed to this report. https://www.defensenews.com/global/europe/2019/01/31/germany-officially-knocks-f-35-out-of-competition-to-replace-tornado/

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  20 décembre 2018 | International, C4ISR

  DARPA Awards Six Teams During Final Spectrum Collaboration Challenge Qualifier

  On December 12, DARPA held the second preliminary event of the Spectrum Collaboration Challenge (SC2) – the world's first collaborative machine-intelligence competition to overcome spectrum scarcity. Fifteen teams represented by members from across the academic, commercial and defense landscapes gathered at Johns Hopkins University Applied Physics Laboratory (APL) to pit their intelligent radio designs against each other in a head-to-head competition. At the event's conclusion, six of the eight top-scoring teams walked away with $750,000 each in prize money. While not all competitors received interim prizes, all 15 teams have an opportunity to move on to the next stage and compete in the 2019 Spectrum Collaboration Challenge grand finale, which will be held in conjunction with MWC19 Los Angeles, in partnership with CTIA, on October 23, 2019. The six prize-winning teams from the second preliminary event are: Zylinium, a team of independent researchers MarmotE from Vanderbilt University Sprite from Northeastern University Erebus, a team of independent researchers Gator Wings from University of Florida SCATTER from IDLab, an imec research group at Ghent University and University of Antwerp, and Rutgers University "During the second preliminary event we witnessed a technological shift," said Paul Tilghman, the DARPA program manager leading SC2. "For the first time, we saw autonomous collaboration outperform the status quo for spectrum management." Starting in early December, each team's radio participated in 105 matches against competitors in the Colosseum, a massive RF testbed that was developed specifically for SC2. The matches were held in a round-robin fashion where each radio network – working in groups of threes, fours or fives – had multiple opportunities to compete against every other radio design in the competition. Roughly 400 matches were held in total to determine the final team rankings and the prize recipients. During the PE2 matches, teams were put through six different RF scenarios designed to mimic the challenges that collaborative, autonomous radios will face in the real world. These scenarios challenged the radios to collaboratively mitigate interfering with an incumbent radio system, sense and adapt to the spectrum demands of high-traffic environments, handle the data demands of the connected soldier of the future, and beyond. Each scenario was designed to pressure test various elements of the teams' approaches and, in particular, their ability to successfully collaborate with the other radios operating within the same environment. “The six different scenarios were closely aligned to actual situations that our defense and commercial systems face in the field. The Wildfire scenario, for example, replicates the complex communications environment that surrounds an emergency response situation, while the Alleys of Austin scenario was designed to mimic what's needed to help dismounted soldiers navigate and communicate as they sweep through an urban environment. This real-world relevance was critical for us as we want to ensure these technologies can continue to develop after the event and can transition to commercial and/or military applications,” said Tilghman. The sixth scenario of the competition was used to determine the six prize winning teams. This scenario explored the essential question of the SC2 competition: can the top teams' collaborative SC2 radios outperform the status quo of static allocation? Each of the six teams that received awards at PE2 demonstrated that their radio was capable of carrying more wireless applications without the aid of a handcrafted spectrum plan, while simultaneously ensuring four other radio networks operating in the same area had improved performance. In short, each of these six radio networks demonstrated the autonomous future of the spectrum. To aid with decision making, teams applied AI and machine learning technologies in various ways. Some leveraged the current generation of AI technologies like deep learning, while others used more conventional optimization approaches. There were also a few teams that used first wave, rule-based AI technologies. “We're very encouraged by the results we saw at PE2. The teams' radios faced new and unexpected scenarios but were still able to demonstrate smart, collaborative decision making. PE2 showed us that AI and machine learning's application to wireless spectrum management creates a very real opportunity to rethink our current century-old approach,” said Tilghman. The competition now enters its third year and moves closer to the finale, which will be held at one of the country's largest annual technology and telecommunications shows – MWC19 Los Angeles. More than 22,000 attendees from the broad mobile ecosystem and adjacent industry sectors will convene at this three-day event to discuss the current opportunities and future trends shaping the industry. The SC2 championship event will be held on the keynote stage of MWC19 Los Angeles on October 23, 2019. At the conclusion of SC2's finale, three teams will be awarded $2 million, $1 million and $750,000, respectively, for first, second and third place. The real prize, however, will be the promise of a more efficient wireless paradigm in which radio networks autonomously collaborate to determine how the spectrum should be used moment-to-moment, helping to usher in an era of spectrum abundance. For more information about DARPA's Spectrum Collaboration Challenge, please visit: https://spectrumcollaborationchallenge.com/ https://www.darpa.mil/news-events/2018-12-19

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  7 janvier 2022 | International, Aérospatial

  The T-7 takes shape: Inside the factory where the Air Force's next trainer is being built

  Boeing says its high-tech methods to design and build the T-7A Red Hawk are saving time, simplifying processes, improving quality and cutting down on defects.