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  17 juin 2019 | International, Autre défense

  Here’s how many nuclear warheads exist, and which countries own them

  By: Kelsey Reichmann WASHINGTON — The number of warheads has decreased over the past year, even as countries continue to modernize their nuclear forces, according to an annual assessment of global nuclear arms. The Stockholm International Peace Research Institute released the SIPRI Yearbook 2019 on the current state of armaments, disarmament and international security. The report found that 13,865 warheads in existence at the start of 2019 were owned by nine nations: the United States, Russia, the United Kingdom, France, China, India, Pakistan, Israel and North Korea. The year before hosted an arsenal of 14,465 warheads. “A key finding is that despite an overall decrease in the number of nuclear warheads in 2018, all nuclear weapon-possessing states continue to modernize their nuclear arsenals,” Jan Eliasson, SIPRI Governing Board chair ambassador and former deputy secretary-general of the United Nations, said in a news release. The U.S. and Russia were the only nations that decreased their warhead inventory, by 265 and 350 respectively, according to the report. The U.K., China, Pakistan, North Korea and possibly Israel all increased their number of warheads, SIPRI found. India and France saw no changes to the size of their arsenals. One big cause of the decrease in arsenal size, according to SIPRI, is the implementation of the New START Treaty between the U.S. and Russia, meant to reduce and set limits on ballistic missiles. The two nations produce more than 90 percent of the world's nuclear arms. The U.S. and Russia announced in 2018 that they had met the limits of the New START Treaty. But if an extension is not implemented, the treaty will expire in 2021. What's the United States up to? The U.S. is in the process of modernizing its nuclear arsenal per the Trump administration 2018 Nuclear Posture Review, which put forth measures to continue a modernization program started by the Obama administration. However, the NPR moves away from reducing nuclear weapons and instead sets a plan to develop new versions while and modifying others. The U.S. hopes to achieve its goals by expanding nuclear options to include low-yield nuclear weapons, which will expand capabilities associated with submarine-launched ballistic missiles. This would add to a U.S. arsenal that already contains 1,000 gravity bombs and air-launched cruise missiles with low-yield warhead options, according to the SIPRI report. The NPR claims these new capabilities are necessary without evidence that the existing arsenal is insufficient. The SIPRI report notes that America's focus on its nonstrategic nuclear arsenal could push other nations in that same direction. Where does Russia stand? “Russia's decisions about the size and composition of its non-strategic nuclear arsenal appear to be driven by the USA's superiority in conventional forces and not by the US non-strategic nuclear arsenal or by weapons yield," according to the SIPRI report. "Instead, pursuit of a new [submarine-launched cruise missile] to ‘provide a needed non-strategic regional presence' in Europe and Asia could — especially when combined with the parallel expansion of US long-range conventional strike capabilities — strengthen Russia's reliance on non-strategic nuclear weapons and potentially could even trigger Chinese interest in developing such a capability,” the report adds. SIPRI data shows Russia has about 4,330 nuclear warheads; approximately 1,830 of them are categorized as nonstrategic. In 2018, Russia continued long-range operations over the Arctic, Atlantic and Pacific oceans. And in December, it also sent to Venezuela two Tu-160 planes, which are part of its long-range aviation command fleet. Russia also fired air-launched cruise missiles from a Tu-160 bomber over northern Russia in November, which caught attention because the number of cruise missiles launched. Meanwhile, in China, India and Pakistan ... China has an estimated 290 nuclear warheads. Though China is working to expand its nuclear forces, the report notes, it has said it's committed to a no-first-use policy. However, the report added that China has taken steps to improve its retaliation response. Rivals India and Pakistan each provide little information about the size of their nuclear arsenals. However, they have made separate statements about missile tests. India has an estimated 130-140 warheads, and Pakistan has an estimated 150-160 warheads. Both nations are estimated to have increased their arsenal by 10 to 20 warheads in the last year. North Korea has provided little transparency about it nuclear weapons capabilities, besides announcing missile tests afterward. It's estimated the country has 20-30 warheads, which would be an increase of 10-20 warheads from a 2018 estimate. The SIPRI report cites a lack of transparency from most nations in regard to nuclear stockpiles. The U.S., the U.K. and France have disclosed some information about their respective arsenals. Information from other nations is mainly based on missile tests and the supply of military fissile materials. https://www.defensenews.com/global/2019/06/16/heres-how-many-nuclear-warheads-exist-and-which-countries-own-them/

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  30 octobre 2020 | International, Aérospatial

  UAE could get up to 50 F-35s in $10B sale

  By: Joe Gould , Aaron Mehta , and Valerie Insinna WASHINGTON — The U.S. State Department is backing the sale of as many as 50 F-35 joint strike fighters to the United Arab Emirates in an arms deal worth an estimated $10.4 billion, according to multiple reports. The news came as the Trump administration informally briefed Congress on its plan to sell the advanced F-35 fighter to the United Arab Emirates Thursday. It follows weeks of speculation and behind-the-scenes debates about how to structure an F-35 deal with the UAE without cutting into Israel's qualitative military edge. If the sale is permitted by Congress and the UAE opts to buy the full number of F-35A conventional takeoff and landing variants covered by the deal, it would have parity with Israel, which has 50 F-35 “Adir” jets under contract, although the country is considering buying 25 more. (The quantities and values of such deals often change from initial estimates.) Amid reports the Trump administration is fast-tracking the F-35 sales, key Democratic lawmakers are continuing to urge a deliberate approach, citing concerns for Israel's security and the security of the warplane's sensitive technology. “This technology would significantly change the military balance in the Gulf and affect Israel's military edge," House Foreign Affairs Committee Chairman Rep. Eliot Engel, D-N.Y., said in a statement. "The F-35 Joint Strike Fighter is a game-changing stealth platform boasting advanced strike capability and unique sensor technology. The export of this aircraft requires very careful consideration and Congress must analyze all the ramifications. Rushing these sales is not in anyone's interest.” The consultations came days after Israel said last week it will not oppose the U.S. sale of “certain weapon systems,” widely considered to mean the F-35. That followed an agreement between Israel and the United States to upgrade its capabilities to preserve its edge. Engel said he plans to weigh the U.S. legal obligation to maintain Israel's military superiority in the region, as well the question of whether the sale would drive demands from other Middle Eastern nations to buy the F-35 in exchange for normalized ties with Israel. (The Trump administration recently brokered such a pact between Israel and the UAE.) “Israel currently has exclusive access in the region to the F-35, which has guaranteed its military edge over the last several years. As Congress reviews this sale, it must be clear that changes to the status quo will not put Israel's military advantage at risk,” Engel said. “This technology also must be safeguarded from our greatest global adversaries. With Russia and China active in the region, the American people will require unimpeachable assurances that our most advanced military capabilities will be protected.” For decades, the State Department has informally consulted with the Senate Foreign Relations and House Foreign Affairs committees before formally notifying Congress of sales, which affords lawmakers a chance to block them. Though lawmakers typically consider such deliberations sensitive and rarely speak publicly about them, Engel broke the news Congress had been informally notified. Assistant Secretary Bureau of Political-Military Affairs R. Clarke Cooper told reporters Wednesday the department plans to honor that process. Though Reuters has reported there is a goal to have a letter of agreement between the U.S. and the UAE by Dec. 2, Cooper said “there are no dates associated with the work that's being done.” He declined to provide specifics of a potential deal and the State Department declined to comment on Thursday. F-35 prime contractor Lockheed Martin referred questions to the State Department. Israeli opposition would be fatal to the deal in Congress, where Israel enjoys strong support. Two key Democrats introduced legislation earlier this month that would place restrictions on F-35 sales to Middle Eastern nations to address their concerns about both the Israel's security and the security of F-35 technology. On Thursday, Engel invited colleagues to join him in legislation, “to ensure that the sale of these types of weapons adhere to our most important national security goals.” https://www.defensenews.com/2020/10/29/uae-could-get-up-to-50-f-35s-in-10b-sale/

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  3 novembre 2020 | International, Aérospatial

  Military Technology Could Bolster Bell’s Commercial Helicopters

  Tony Osborne October 30, 2020 Bell is pondering how to incorporate advanced technologies developed for its future military platforms into its commercial rotorcraft. Since its rebranding as more of a technology company than a helicopter OEM, CEO Mitch Snyder has been pushing the company on a course of innovation, investing in autonomous flight and electric propulsion as well as advancing defense capabilities. But there appears to be little obvious gain for Bell's line of civil rotorcraft. In the last couple of years, its commercial helicopters have received only fairly minor upgrades. The Model 407GXi light single-engine platform had its avionics upgraded so that it can fly under instrument flight rules, while the Model 412 medium twin received new avionics and uprated power. Yet both upgrades were essentially spun off from modifications for military programs. The 407 update was developed for the U.S. Navy's rotary-wing trainer requirement, which Bell lost to Leonardo, and the 412EPi was born from the type's selection by Japan for its UH-X military utility requirement. Bell's restraint in further developing commercial rotorcraft likely is due to its prolonged effort to bring the new Model 525 to market. Nor is it a great time to bring a new aircraft to market. Sales remain stubbornly slow in the aftermath of a fall in energy prices that dramatically reduced orders from the lucrative oil-and-gas support market. Progress in bringing the fly-by-wire, 9.3-metric-ton 525 super-medium to market—it was launched in 2012 and flown for the first time in 2015—has been painfully slow, in part due to the fatal loss of one prototype but also due to the need to convince certification authorities of fly-by-wire technology benefits. “The hurdle is higher now to try and get [the 525] certified,” Snyder told Aviation Week during a virtual roundtable on Oct. 19. “This technology brings all these benefits and makes the aircraft safer. . . . You have to walk them through and give them time to understand it,” he said. Snyder believes things are on track. “We feel very good about getting certified in 2021,” he added, noting that the company is finishing up testing and preparing for the submission of certification documentation to the FAA. He said Bell is continuing to evaluate new commercial platforms, although the cost of development and certification is prohibitive. “We're always looking to see if there's a clean-sheet out there that we may want to do,” he said. “But I can tell you, at least right now, our focus has been around derivatives to our military products and more about adapting upgrades to our existing models.” The approach appears to be in line with his views at last year's Paris Air Show, where he suggested Bell may not develop a new clean-sheet commercial conventional rotorcraft beyond the 525. One area of opportunity could be development of a single-engine medium helicopter, he hinted, building on Bell's Model 360 Invictus prototype for the U.S. Army's Future Attack Reconnaissance Aircraft (FARA) requirement. “Bell's got a lot of single-mediums out there,” said Snyder, noting that hundreds of Model 204/205 Iroquois helicopters remain in service with militaries, civilian operators and government agencies. Operators have become reliant on twin-engine helicopters, particularly because in some parts of the world, notably Europe, single-engine rotorcraft are banned from flying over urban areas. But Snyder said the 360 Invictus also features a supplemental power unit that can act as an auxiliary power unit as well as provide additional performance or auto-rotation power, and could be an enabler for a single-engine medium. It is possible that Bell is looking at a military utility variant of the 360 Invictus, pairing the aircraft with the attack version in the same way that its UH-1Y Venom and AH-1Z Viper platforms have built on the Huey and Cobra. Such a platform could receive interest from the U.S. special operations community, which is looking to replace the Boeing AH-6/MH-6 Little Bird family. Officials have noted that they would like to be able to adapt a FARA platform to carry troops. Sikorsky's Raider X can do so, but the Bell FARA cannot, until a more utilitarian version emerges (AW&ST June 1-14, p. 28). The Army's selection of Bell's V-280 tiltrotor as the larger Future Long-Range Assault Aircraft could enable a commercial spinoff of the platform, Snyder suggests. Bell is also looking to make commercial use of its Electrically Distributed Anti-Torque (EDAT) technology, a ducted electric tailrotor system tested on a Bell 429 light-twin. Flight tests for it were only revealed in February, despite the aircraft's flights in plain sight from its Mirabel, Quebec, facility since May 2019. Testing showed that the EDAT reduced noise levels, but there were also benefits in terms of safety, enabling the option of switching off the anti-torque system while the engines and main rotor are still turning. The EDAT eliminates complex tailrotor gearboxes and shafts and requires less costly inspections and maintenance as well. “We pulled in off-the-shelf technologies to make the demo occur within one year,” said Snyder. “Now we're evaluating what the real technology needs to be as far as repackaging it in the weight and size that we require.” Snyder said the EDAT technology will be aimed at a commercial rotorcraft, but for which product line or when it might be commercially available has yet to be decided. https://aviationweek.com/aerospace/aircraft-propulsion/military-technology-could-bolster-bells-commercial-helicopters