23 mars 2023 | International, Autre défense
In the last year, 37 nations have combined to announce defense spending increases of over $1 trillion, to be spent during the next five years, according to a new American Enterprise Institute analysis.
15 novembre 2021 | International, Aérospatial
Amid a decline in aerospace sector revenues caused by the coronavirus pandemic, organizers hope the event will contribute to the industry's recovery and shape its future.
12 août 2020 | International, C4ISR
Nathan Strout The Pentagon has cleared 100 megahertz (MHz) of contiguous mid-band spectrum to be used for commercial 5G following a 15-week review, determining that they can share that bandwidth while minimizing impact on military radars. While that 3450-3550 MHz mid-band spectrum is highly desired by commercial 5G developers, it's been historically used by the military for critical radar operations for air defense, missile and gunfire control, counter-mortar, bomb scoring, battlefield weapon locations, air traffic control, and range safety. But now, leaders from the Department of Defense say the Pentagon can continue using the spectrum for those purposes while making it available for commercial development. DoD Chief Information Officer Dana Deasy said the department will move toward sharing most of that spectrum without limits while setting up a Spectrum Relocation Fund Transition Plan to minimize risks. “DoD is proud of the success of the [America's Mid-Band Initiative Teams (AMBIT)] and is committed to working closely with industry after the FCC auction to ensure timely access to the band while protecting national security,” Deasy told reporters Aug. 10. The White House and Department of Defense established AMBIT to free up spectrum for 5G development quickly back in April. Over a 15-week period, the working group was able to bring together 180 subject matter experts, and ultimately were able to identify 100 MHZ of spectrum used by the military that could be safely shared with commercial 5G efforts.The decision expands the amount of connected mid-band spectrum open for 5G development to 530 MHz. The Federal Communications Commission will auction off the spectrum. One government official said action was expected by the end of this fiscal year. https://www.c4isrnet.com/industry/2020/08/10/pentagon-clears-100-mhz-of-spectrum-for-5g-development/
13 juillet 2020 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité
The J-20B has overcome agility problems to finally be considered a fully fledged fifth-generation fighter, military source says Aircraft still will be fitted with Russian engine but ‘Chinese version could be ready in a year or two' A modified version of China's first stealth fighter jet, the J-20, has formally entered mass production, with upgrades earning it a place as a fifth-generation fighter jet, according to a military source close to the project. The moment was marked at a ceremonial unveiling of the modified J-20B stealth fighter jet on Wednesday attended by many senior military leaders including Central Military Commission (CMC) vice-chairman General Zhang Youxia, the source said. Zhang is the second-ranked vice-chairman of the CMC and is in charge of weapons development for the People's Liberation Army. “Mass production of the J-20B started on Wednesday. It has finally become a complete stealth fighter jet, with its agility meeting the original criteria,” the source said. “The most significant change to the fighter jet is that it is now equipped with thrust vector control.” Thrust vector control (TVC) allows pilots to better control the aircraft by redirecting engine thrust. In 2018, China debuted its J-10C multirole fighter – fitted with a WS-10 Taihang engine – at the China air show in Zhuhai, putting the aircraft through its paces in a performance that indicated that China had succeeded in thrust technology. While the TVC technology had been applied to the stealth fighter, the J-20B would still use Russian Saturn AL-31 engines because more work needed to be done on China's WS-15 engine, the source said. Chinese engineers have been developing high-thrust turbofan WS-15 engines for the J-20, but that work has fallen behind schedule. “The Chinese engine designed for the J-20s still failed to meet requirements, but its development is going quite smoothly, and it may be ready in the next one or two years,” the source said. “The ultimate goal is to equip the J-20B fighter jets with domestic engines.” China was thought to have built about 50 J-20s by the end of 2019, but problems with the jets' engines delayed further production plans. Meanwhile, Lockheed Martin's Fort Worth assembly plant in Texas delivered 134 F-35 stealth fighters in 2019, three more than its target and 47 per cent more than its output in 2018, according to the company. China's first batch of J-20s entered service in 2017 when the US decided to deploy more than 100 F-35s to Japan and South Korea that year. The J-20 was meant to be a fifth-generation fighter jet on a par with Lockheed's F-22 Raptor and F-35 Lightning multirole strike fighters. Fifth-generation fighters are defined by their stealth technology, supersonic cruising speed, super manoeuvrability, and highly integrated avionics. But the earlier version of the J-20 was described by Western media as a “dedicated interceptor aircraft” because of its lack of agility. “The launch of the J-20B means this aircraft now is a formal fifth-generation fighter jet,” the military source said, adding that Chengdu Aerospace Corporation (CAC), which manufactures the J-20s, had received “heavy orders” from the PLA. CAC set up its fourth production line in 2019, each one with a capacity to make about one J-20 a month. https://www.scmp.com/news/china/military/article/3092839/chinas-stealth-fighter-goes-mass-production-after-thrust