Boeing confirme l'intérêt de Berlin pour l'hélicoptère d'attaque AH-64 Apache... aux dépens du Tigre MK3

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  September 10, 2020 | International, Aerospace

  Watch India test its new homemade hypersonic vehicle

  By: Vivek Raghuvanshi NEW DELHI — India on Monday conducted a successful test of a fully indigenous hypersonic technology demonstrator vehicle powered by an air-breathing scramjet engine, the Defence Ministry announced. With the test, India joins the U.S., Russia and China in the race for hypersonic technology development. The flight test took place Sept. 7 around 11 a.m. on an island off the coast of Odisha. The demo vehicle was indigenously developed by the government's Defence Research and Development Organisation, and it has the ability to fly at six times the speed of sound, according to defense scientists here. The ministry said the hypersonic cruise vehicle was launched using a solid rocket motor, which took it to an altitude of 30 kilometers. Then the cruise vehicle separated from the launch vehicle and the air intake opened as planned, the ministry added. “The successful demonstration proved several critical technologies including aerodynamic configuration for hypersonic manoeuvers, the use of scramjet propulsion for ignition and sustained combustion at hypersonic flow, thermo-structural characterisation of high-temperature materials, separation mechanism at hypersonic velocities, etc.,” DRDO said in a statement. A top DRDO scientist told Defense News that the vehicle will be used to launch both hypersonic and long-range cruise missiles. "DRDO has spent around $4.5 million on its [HTDV] prototype development cost, and three more tests will be carried out in the next five years to make this platform into a full-fledged hypersonic weapon that is capable of carrying both conventional and nuclear warheads, "he said. DRDO spent about $30 million on the design and development phases. Congratulating DRDO, Prime Minister Narendra Modi tweeted: “The scramjet engine developed by our scientists helped achieve a speed of 6 times the speed of sound! Very few countries have such capability today.” Defence Minister Rajnath Singh called the test a “landmark achievement” toward India becoming self-reliant and less dependent on foreign technology. “It's now time to progress to the next phase with all critical technologies being established by the successful [HTDV] flight test, using the indigenously developed scramjet propulsion system,” he added. https://www.defensenews.com/global/asia-pacific/2020/09/09/india-tests-homemade-hypersonic-vehicle

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  December 9, 2020 | International, C4ISR

  Rafael hopes quantum technology can help in GPS-denied environments

  Seth J. Frantzman Rafael Advanced Defense Systems has been investing in quantum technology in the hopes that it will improve existing sensors on the battlefield and could lead to a solution for GPS-denied environments. Because the technology is linked to better positioning, navigation and time-keeping, company leaders said they believe it could “revolutionize” this space. Alternative means of PNT have become a priority for militaries throughout the world as jammers become less expensive and more ubiquitous while the reliance on PNT information increases. In particular, Rafael executives are encouraged that “extremely high-performance quantum accelerometers and gyroscopes can be designed to be the basis of the next generation inertial navigation systems,” a company official said. These sensors can exploit the quantum properties of atoms to measure acceleration and angular rates with unprecedented accuracy, which, in turn, allows for “dead-reckoning navigation for relatively long periods of time while essentially keeping GPS/GNSS accuracy.” Rafael's team working on quantum technology, which includes Alon Gabbay, head of miniature quantum sensors group of the Manor division and Nitzan Link, of the CTO Technology Center of the Manor Division of Rafael Advanced Defense Systems, were among those who discussed the potential for the technology with Defense News. Quantum technology is about sensors that “measure discrete energy levels and difference in change with magnetic or electric fields,” a Rafael official said. The struggle for engineers has been that while this technology has existed for decades, particularly in university labs, miniaturizing it and using it in defense systems is a challenge. While Rafael is traditionally Israel's research and development arm for new weapon systems, it is also the company behind the Trophy defense system, Litening targeting pod and Iron Dome air defense technologies. Rafael has also rolled out new digitized battlefield concepts and used optics to better match scenes and leverage artificial intelligence. “Quantum technologies can give rise to ultra-sensitive gravitational and magnetic measurements, hence opening the possibility of using anomaly maps to aid inertial navigation,” a company official told Defense News. “Atomic clocks use quantum technologies to provide highly stable and accurate frequency standards; the resulting technology can be used for time-keeping opening new possibilities for using communications as an aid to an integrated navigation system.” https://www.c4isrnet.com/industry/2020/12/08/rafael-hopes-quantum-technology-can-help-in-gps-denied-environments/

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  November 30, 2022 | International, Aerospace

  Exclusive: General Electric, L3Harris among suitors vying for Aerojet -sources

  Industrial conglomerate General Electric Co and defense contractor L3Harris Technologies Inc are among those competing to acquire rocket maker Aerojet Rocketdyne Holdings Inc , according to people familiar with the matter.