US Air Force reports lower B-21 costs after negotiations with Northrop

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  3 novembre 2020 | International, Naval, C4ISR

  Viasat to supply Britain’s future frigate with satellite communications tech

  By: Andrew Chuter LONDON — Progress toward boosting the British Royal Navy's frigate numbers with a new class of ship continues to advance, with the Babcock International-led consortium contracted to build the warships adding on satellite communication supplier Viasat to its list of subcontractors. A deal to supply ultrahigh-frequency satellite communications for five general-purpose frigates being built for the Royal Navy has gone to Viasat UK, the company announced Nov 3. Viasat is based in the U.S. and was ranked No. 69 on Defense News' latest list of the top 100 defense companies around the world. Ultrahigh-frequency SATCOM is a mission-critical capability that will provide the Type 31 with beyond-line-of-sight, secure, integrated voice and data services. The deal is the latest in a sequence of contract awards by Babcock over the last few months. This time last year, the Ministry of Defence hired the firm to design and build a British version of the Danish Iver Huitfeldt-class warship. About 75 percent of the Type 31 subcontracts have now been awarded, and Babcock remains confident the program is on schedule despite problems presented by the coronavirus pandemic. The Viasat deal follows a recent announcement from BAE Systems that it had come to an agreement with Babcock to deliver two Bofors 40 Mk4 and one Bofors 57 Mk3 multipurpose gun systems per ship. BAE said its Karlskoga facility in Sweden will deliver the weapons in 2023 and 2024. All of the major supply chain contracts on Type 31 have been decided, including the Thales Tacticos-based combat management system; MTU main engines and diesel generators; Renk main reduction gearboxes; MAN Energy Solutions propellers and propeller shaft lines; and Raytheon Anschutz's warship-integrated navigation and bridge system. Babcock and its partners BMT, Fraser Nash, OMT and Thales — collectively known as Babcock Team 31 — are to start construction of the first 6,000-ton warship next year, with 2027 set as the year it's to enter service. A covered construction hall capable of holding two Type 31s is progressing at Babcock's Rosyth shipyard in Scotland, where the Royal Navy's two 65,000-ton Queen Elizabeth-class aircraft carriers were recently completed. All five of the new frigates are due to have been completed — at an average cost of £250 million (U.S. $324 million) per ship — by 2028 to replace aging Type 23 frigates. Babcock announced in August that it had weeks earlier successfully completed the preliminary design review of the entire ship. BAE is also building Britain's Type 26 anti-submarine warfare frigate. The company has a contract for the first three warships, with the Royal Navy having an eventual requirement for eight vessels. As for Viasat UK, the SATCOM contract is the second defense deal it has secured in the last few days. Last week the company announced that, along with CDW UK, it had been awarded a two-year technical innovation contract for command, control and communication support for a program known as Lelantos. The agile experimentation initiative is to empower the headquarters of NATO's Allied Rapid Reaction Corps in Gloucester, England, with superior decision-making, cross-domain integration and fast maneuver in a conflict. https://www.defensenews.com/industry/2020/11/03/viasat-to-supply-britains-future-frigate-with-satellite-communications-tech

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  9 juillet 2019 | International, Aérospatial

  These super-small drones no longer need a battery

  By: Kelsey D. Atherton To be a fly on the wall, an observer must be ubiquitous, unobtrusive and quiet. What if, instead, the observer was just a tiny fly-sized robot, independently powered, able to travel like its insect inspiration? That's one possibility from the long line of work on the RoboBee series of miniature flying machines, the latest of which recently flew independently under its own photovoltaic power. RoboBee is a long-running project of the Harvard Microrobotics Lab and the Wyss Institute for Biologically Inspired Engineering. The end goal is ultimately controlled swarms of insect-sized flying machines, with visions of these swarms performing everything from plant pollination to surveillance. These are ambitious aims, and all have been hindered to this point by a fundamental constraint on the form: the robots are too small to carry batteries. Much of the flight design uses a tethered power supply, allowing the designers to craft Piezoelectric motors that expand and contract as electrical current passes through the muscle-like membranes. This created wings that could flap and propel the robot upward, but it wasn't until recently that the robot could do it on its own power supply. RoboBees are smaller than any drone currently employed by the U.S. military, minute enough to make the palm-sized Black Hornet feel gargantuan. Without a sensor payload, it'd be a novelty, but the military has already invested in cheap, expendable sensor-carrying drone gliders for tasks such as meteorological data collection. Should this power supply enable RoboBees to support a meaningful sensor package, they could be used in a similar fashion, scattered as sensors that can flap their way into a new position. Holding six solar power cells on a stick, and with a second set of wings, the vehicle successfully flew under its own power, even if only for the briefest of moments. The researchers' documentation of their project was published in scientific journal Nature June 26, appearing under the title “Untethered flight of an insect-sized flapping-wing microscale aerial vehicle.” The whole RoboBee weights 259 milligrams, or less than a paperclip, and under special lights was able to generate enough lift to support an additional payload of 70 mg, which could be used for lightweight sensors, control electronics, or larger power supply in the future. Fitting sensors to a craft the small is likely a challenge, but also essential for the promise of the device. There is also the small matter that, even using photovoltaic cells, the robot needs an alien sun to fly. “The Robobee X-Wing needs the power of about three Earth suns to fly, making outdoor flight out of reach for now,” stated the summary from Harvard's School of Engineering and Applied Sciences. “Instead, the researchers simulate that level of sunlight in the lab with halogen lights.” Should the sensors exist, and the device become capable of outdoor flight, microrobotics could become a ubiquitous part of modern life, performing functions alongside insects and relaying sensor information back as an unseen intelligence platform. https://www.c4isrnet.com/unmanned/robotics/2019/07/08/these-super-small-drones-no-longer-need-a-battery/

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  26 avril 2021 | International, Aérospatial

  Aerovironment awarded $45 million option for switchblade tactical missile systems under U.S Army lethal miniature aerial missile systems contract

  The $44,961,751 contract option increases the total value of the contract to $122,523,677