Safran weighs protest against Rome's defence deal veto | Reuters

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  19 décembre 2018 | International, Terrestre

  Turkey cleared by US for $3.5 billion Patriot missile deal, despite S-400 row

  By: Aaron Mehta WASHINGTON — Amidst an ongoing row concerning Turkey's decision to buy a Russian air defense system, the U.S. State Department has cleared Ankara to purchase a package of Patriot systems, with an estimated price tag of $3.5 billion. The announcement, posted late Tuesday evening on the website of the Defense Security Cooperation Agency, would cover the procurement of 80 Patriot MIM-104E Guidance Enhanced and 60 PAC-3 Missile Segment Enhancement missiles, as well as associated equipment. Turkey has twice passed over the Patriot — in 2013 when it chose a Chinese system that it later dropped out of, and in 2017 when it said it finalized the S-400 deal. In both cases, Turkey insisted on a transfer of missile technology regarding the Patriot before it would consider the system, something the U.S. declined to do. The DSCA solicit said industrial offsets of some kind are required with the deal, but “at this time offset agreements are undetermined and will be defined in negotiations between the purchaser and contractors;" whether that offset will include tech transfer remains to be seen. The S-400 is a major sticking point in the military relationship between the U.S. and Turkey. Pentagon officials and NATO leadership have been vocal that Turkey cannot be allowed to plug the S-400 into allied systems, such as integrating it with the F-35. Turkey is a member of NATO. The two systems are different in capabilities. The S-400 is a mobile system, designed for deployment behind the lines to protect critical infrastructure, with a very long range. The Patriot, meanwhile, is a medium-range system. A department spokesperson, speaking on background ahead of the announcement, said Turkey “will use Patriot to improve its air and missile defense capability, defend its territorial integrity, and deter regional threats. The proposed sale will increase the defensive capabilities of the Turkish military to guard against hostile aggression and shield NATO allies who might train and operate within Turkey's borders.” In addition to the missiles, the package includes four AN/MPQ-65 Radar Sets, four Engagement Control Stations, 10 Antenna Mast Groups, 20 M903 Launching Stations, and five Electrical Power Plant III systems. As with all DSCA announcements, dollar values and quantities may vary at the end of the day; the Senate must OK a sale before the customer and the U.S. government enter contract negotiations. https://www.defensenews.com/global/europe/2018/12/19/turkey-cleared-by-us-for-35-billion-patriot-missile-deal-despite-s-400-row

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  5 février 2021 | International, Aérospatial, Naval, C4ISR

  New Sonar Sees Underwater From The Air, Promising To Transform Anti-Submarine Warfare

  Researchers at Stanford University have developed a new type of sonar to overcome the previously insurmountable problem of seeing underwater from the air. Sound does not travel easily between air and water: there is a 65-decibel loss, which means roughly a million-fold decrease in intensity, making it makes it virtually impossible to pick up sound reflections from the air. The new technology can map the seabed and potentially detect mines, submarines and other underwater targets from aircraft. Currently, the only ways of using sonar from aircraft are sonar buoys (sonobuoys) dropped into the water, or dipping sonar lowered to the sea surface from a hovering helicopter. The helicopter cannot move while using dipping sonar, so it has to check one spot, raising the sonar, fly somewhere else, lowering the sonar again, and so on. By contrast, the new Photoacoustic Airborne Sonar System or PASS, developed at Stanford with funding from the U.S. Navy, will work from a moving aircraft. “Our vision of the proposed technology is to capture images continuously as the airborne vehicle flies over the water,” Stanford researcher Aidan Fitzpatrick told Forbes. “Similar to how synthetic aperture radar systems or in-water synthetic aperture sonar systems work today.” https://www.forbes.com/sites/davidhambling/2021/02/04/new-sonar-sees-underwater-from-aircraft/

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  25 novembre 2022 | International, Aérospatial

  U.S. Air National Guard recommend fielding Leonardo’s BriteCloud 218 decoy after successfully completing an extensive US Defense Department test programme

  The U.S. Air Force has subsequently designated BriteCloud 218 as AN/ALQ-260(V)1, identifying it as an airborne electronic warfare countermeasure