13 novembre 2024 | International, C4ISR, Sécurité
29 janvier 2020 | International, Aérospatial
Germany walks away from $2.5 billion purchase of US Navy’s Triton spy drones
By: Sebastian Sprenger
COLOGNE, Germany — The German government has canceled plans to buy Northrop Grumman-made Triton drones to the tune of $2.5 billion, opting instead for manned planes carrying eavesdropping sensors.
The decision to buy Bombardier Global 6000 aircraft comes after officials became convinced that the Global Hawk derivatives would be unable to meet the safety standards needed for flying through European airspace by 2025, a target date for Berlin's NATO obligations.
A defense ministry spokeswoman told Defense News the Triton option had grown “significantly more expensive” compared with earlier planning assumptions.
The U.S. State Department in April 2018 cleared Germany's request to purchase four MQ-4C Triton drones for signals intelligence missions under the country's PEGASUS program, short for “Persistent German Airborne Surveillance System.” The program includes a sensor, dubbed “ISIS-ZB” and made by Hensoldt, for intercepting communications and locating targets by their electromagnetic signature.
The German Defence Ministry for years had been banking on the Triton purchase to come with a pre-installed safety-technology package that would be easily approved by European air traffic authorities. But officials saw their hopes dashed as Italy recently issued a military-type certificate for a sister drone — NATO's Alliance Ground Surveillance fleet of Global Hawks, stationed in Sigonella, Sicily — that prescribes tight restrictions on flights over the continent.
Manned aircraft like the envisioned Global 6000 are allowed to routinely fly alongside civilian traffic, a prospect that the Germans see as more palatable than dealing with drone-specific airspace corridors.
Berlin hopes to catch the tail end of Bombardier's Global 6000 manufacturing run, as the model is being phased out in favor of an upgrade. While that strategy could yield a better price, Berlin needs to move soon before the production line goes cold, according to officials.
Letting drones fly in the same airspace as civilian traffic remains an unresolved problem, as the requisite sensing technology and the regulatory framework are still emerging. Germany previously tried filling its signals-intelligence gap with the Euro Hawk, but the project tanked in 2013 after spending $700 million because officials underestimated the trickiness of attaining airworthiness qualification.
With the Triton gone, Germany's next ambition for a fully approved unmanned aircraft lies with the so-called Eurodrone, a cooperation with France. Officials have said that the program is designed from the start with manned-unmanned airspace integration in mind.
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11 février 2021 | International, Aérospatial
Pentagon science office launches program to develop manufacturing in space ... and on the moon
Nathan Strout WASHINGTON — The Defense Department's emerging technology research arm will invest in new materials and processes that could enable manufacturing in space and on the moon's surface. To that end, the Defense Advanced Research Projects Agency is launching the Novel Orbital and Moon Manufacturing, Materials and Mass-efficient Design program, or NOM4D. “NOM4D's vision is to develop foundational materials, processes and designs needed to realize in-space manufacturing of large, precise and resilient Defense Department systems,” said Bill Carter, program manager in DARPA's Defense Sciences Office, in a press release. DARPA is launching the program in response to the natural limitations of rocket launches in placing larger structures and systems in orbit, the agency said. While the launch industry has expanded significantly in recent years, with dozens of new providers entering the fray, rocket launches are inherently limited — even the largest rockets have weight and volume restrictions. The solution? Place smaller pieces of a structure on orbit with multiple launches, and then assemble them in space. Or better yet, collect materials from the moon to build with. “We will explore the unique advantages afforded by on-orbit manufacturing using advanced materials ferried from Earth,” Carter said. “Large structures such as antennas and solar panels can be substantially more weight efficient, and potentially much more precise. We will also explore the unique features of in-situ resources obtained from the moon's surface as they apply to future defense missions.” Manufacturing in space could also enable more flexibility in the design of space systems. Today, most satellites are designed to be as compact as possible in order to be integrated with and launched on rockets. But by assembling systems in space, systems could be designed without some of those volume restrictions, allowing them to be more mass efficient. “We're looking for proposers to come up with system designs that are so mass efficient that they can only be built off-earth, and with features that enable them to withstand maneuvers, eclipses, damage and thermal cycles typical of space and lunar environments,” Carter said. “Given the constraints of ground test, launch and deployment, the traditional approach to designing space structures is not likely to result in dramatic improvements in mass efficiency. In order to take the next step, we've got to go about materials, manufacturing and design in a completely new way.” The idea of assembling systems and structures in space isn't new. Famously, the International Space System was assembled in space using a number of components individually launched into space. “People have been thinking about on-orbit manufacturing for some time, so we expect to demonstrate new materials and manufacturing technologies by the program's end,” Carter added. With NOM4D, DARPA will work with participants over three 18-month phases to develop precise, mass efficient structures that could be used for on-orbit construction. Each phase will focus on one of three applications: large solar arrays, large radio frequency reflector antennas, and segmented infrared reflective optics. The agency will host a proposers day webinar on Feb. 26 and expects to release a broad agency announcement solicitation in February. https://www.c4isrnet.com/battlefield-tech/space/2021/02/09/darpa-launches-new-program-to-develop-manufacturing-in-spaceand-on-the-moon/
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17 novembre 2024 | International, Aérospatial
NATO drill sends divers, drones to sneak by underwater alarm sensors
Alliance officials are stepping up efforts to secure critical underwater infrastructure.