11 juin 2021 | International, Naval
Ingalls to hire 3,000 full-time shipbuilders
America’s largest military shipbuilder is adding blue-collar jobs.
16 janvier 2020 | International, Aérospatial
Rolls-Royce develops world-first electrical technology for next-generation Tempest programme
Over the last five years Rolls-Royce has been pioneering world-first technology that will contribute to the UK's next-generation Tempest programme. In an aim to be more electric, more intelligent and to harness more power, Rolls-Royce recognised that any future fighter aircraft will have unprecedented levels of electrical power demand and thermal load; all needing to be managed within the context of a stealthy aircraft.
Before the launch of the Tempest programme, Rolls-Royce had already started to address the demands of the future. Back in 2014, the company took on the challenge of designing an electrical starter generator that was fully embedded in the core of a gas turbine engine, now known as the Embedded Electrical Starter Generator or E2SG demonstrator programme.
Conrad Banks, Chief Engineer for Future Programmes at Rolls-Royce said:
"The electrical embedded starter-generator will save space and provide the large amount of electrical power required by future fighters. Existing aircraft engines generate power through a gearbox underneath the engine, which drives a generator. In addition to adding moving parts and complexity, the space required outside the engine for the gearbox and generator makes the airframe larger, which is undesirable in a stealthy platform."
Phase two of this programme has now been adopted as part of Rolls-Royce's contribution to the Tempest programme.
As part of this journey, the company has been continuously developing its capabilities in the aerospace market, from gas turbine technologies through to integrated power and propulsion systems. The goal being to provide not only the thrust that propels an aircraft through the sky, but also the electrical power required for all the systems on board as well as managing all the resulting thermal loads.
Rolls-Royce is adapting to the reality that all future vehicles, whether on land, in the air or at sea will have significantly increased levels of electrification to power sensors, communications systems weapons, actuation systems and accessories, as well as the usual array of avionics.
The launch of phase one of the E2SG programme saw significant investment in the development of an integrated electrical facility – a unique test house where gas turbine engines can be physically connected to a DC electrical network.
The launch of the second phase of the project in 2017 saw the inclusion of a second electrical generator connected to the other spool of the engine. It also included an energy storage system in the electrical network and the ability to intelligently manage the supply of power between all these systems.
The two-spool mounted electrical machines allows, by combination of operation as either a motor or a generator, the production of a series of functional effects on the engine, including the transfer of power electrically between the two spools.
As part of the E2SG programme, Rolls-Royce is investigating the feasibility of using dual spool generation to influence the operability, responsiveness and efficiency of the engine. Another key technology under development is the Power Manager intelligent control system, which uses algorithms to make real time intelligent decisions about how to supply the current aircraft electrical demand while optimising other factors including engine efficiency to reduce fuel burn or engine temperature to extend component life.
Throughout the Tempest programme, Rolls-Royce will be continuing to mature the electrical technologies demonstrated by the E2SG programme, with a third phase of testing likely to include a novel thermal management system being integrated with the overall system, as well as more electric engine accessories.
The company also intends to showcase a full-scale demonstrator of an advanced power and propulsion system. There will be new technologies in all parts of the gas turbine, including twin spool embedded generation to higher power levels, an advanced thermal management system, an energy storage system tailored to the expected duty cycle of the future fighter and an intelligent power management system which will be able to optimise the performance of both the gas turbine and the power and thermal management system.
Press release issued by Rolls-Royce plc Defence Aerospace on January 9, 2020
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25 juin 2020 | International, Naval
Statement of Electric Boat President Kevin Graney on US Navy Award of Columbia-class Ballistic Missile Submarine Contract
Groton, Conn. June 22, 2020 - General Dynamics Electric Boat president Kevin Graney issued the following statement about a US Navy contract award announced today. "The shipbuilders of Electric Boat recognize the responsibility and welcome the opportunity to deliver the Columbia class. Columbia is our nation's top strategic defense priority and, as the prime contractor, we will provide the safest and most capable class of submarines in the defense of our nation. As we move toward full scale construction later this year, Columbia's design is more advanced than that of any previous submarine program. We stand ready to execute on this critical program and have made extensive preparations by hiring and training the next generation of skilled shipbuilders, expanding and modernizing our facilities and strengthening our supply base." Background information The Navy announced today that General Dynamics Electric Boat has been awarded a contract modification for the design completion, engineering work and design support efforts for the Columbia Class of Ballistic Missile Submarines. An option valued at $9.47 billion supporting the construction of the first two ships of the Columbia class is established as part of this modification. Electric Boat is a wholly owned subsidiary of General Dynamics (NYSE: GD). Electric Boat is the prime contractor on the design and construction of 12-ship Columbia class, which will replace the aging Ohio class of ballistic missile submarines. Electric Boat will manage numerous vendors and suppliers to do this work. Advanced construction began in 2017 at the company's facility in Quonset Point, Rhode Island. Final assembly and test of the Columbia class will take place starting in 2024 at Electric Boat's shipyard in Groton. General Dynamics is investing $1.8 billion in capital expenditures to construct and expand its facilities to support the construction of the Columbia class, the world's most advanced strategic missile submarine. The company's three primary locations are in Groton and New London, Conn.; and Quonset Point, R.I. Its current workforce is more than 16,000 employees. More information about Electric Boat is available at www.gdeb.com For more information about General Dynamics, please visit www.generaldynamics.com. View source version on General Dynamics Electric Boat : http://www.gdeb.com/news/news_archives/2020archives.html#06-22-2020
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20 septembre 2019 | International, Aérospatial, Sécurité
Drones are now a permanent part of the LAPD’s arsenal
By CINDY CHANG Drones became a permanent part of the Los Angeles Police Department's crime-fighting arsenal Tuesday, despite opposition from privacy advocates who fear the remote-controlled aircraft will be used to spy on people. In a yearlong trial, the LAPD's SWAT team deployed drones four times, mostly when suspects were barricaded and the device provided a bird's eye view of the property's nooks and crannies. On Tuesday, the five-member civilian Police Commission unanimously approved new regulations that enshrine the drones' use in specific situations, including active shooters, barricaded suspects and search warrants. The drones will not be equipped with weapons or facial recognition software, according to the regulations, which are similar to those governing the trial program. In July, at Chief Michel Moore's recommendation, the use of drones was expanded beyond SWAT to include the bomb squad in neutralizing explosives and sweeping large public events for radioactive devices. Drones “provide invaluable information to decision makers while decreasing the risk to human life,” Moore wrote in a July 3 report, noting that everyone is safer when the devices check out a dangerous situation instead of officers going in blind. The LAPD joins about 600 other law enforcement agencies around the country that use drones, according to a 2018 report by Bard College's Center For the Study of the Drone. The new regulations will ensure that the drones are not “being used in a flippant manner,” Asst. Chief Horace Frank, who runs the department's counter-terrorism and special operations bureau, told the Police Commission on Tuesday. The LAPD's drone regulations are more restrictive than those of many other agencies, Frank said. Each drone deployment must be approved by a commander and a deputy chief, and the Police Commission will receive an annual report. Asked by Commissioner Eileen Decker whether drones can help de-escalate volatile situations, Frank cited a June 15 incident when a drone flew near a man who had barricaded himself in a trucking yard. “The minute we deployed the device at the entrance to the trailer and he saw it, he gave up,” Frank said. Activists said the LAPD and Police Commission have disregarded citizens who expressed reservations about the drones in community meetings and online surveys. One activist, Michael Novick, predicted that the LAPD would expand drone usage and infringe on civil liberties. “We're witnessing the exact definition of mission creep,” Novick said. “Now you're upgrading. You approved a temporary pilot project. You're going to normalize it with this step. ... The next step will be they'll come back and say, ‘We actually need the ability to have facial recognition.'” The LAPD's drone fleet will remain at four strong, Frank said. But the DJI Spark devices used in the pilot program will be replaced by DJI Mavics, which have better indoor flying capabilities, extended flight time and lights for navigating in the dark. The models are similar to those used by hobbyists. The Police Commission accepted a $6,645 donation from the Los Angeles Police Foundation to purchase the Mavics, as well as a donation of drone flight tracking software from Measure Aerial Intelligence. As the commission approved the drone regulations and donations, the audience broke into chants of “Shame! Shame!” Moore said he is mindful of “concerns of Big Brother and invasion of privacy and civil liberties.” “We're committed to striking the right balance that ... protects all of our community — their rights of privacy but also their public safety and their right to exist without threats of dangers that this tool can be used in some instances to mitigate,” he told reporters after the meeting. https://www.latimes.com/california/story/2019-09-10/drones-are-now-a-permanent-part-of-the-lapds-arsenal