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January 14, 2021 | International, Naval

For the US Navy, the future of shipbuilding (and warfare) is in the power plant

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WASHINGTON — The U.S. Navy wants to buy a next-generation large surface combatant by the end of the 2030s, but its not being built for a new kind of sensor or weapon system. The newly dubbed DDG(X) is being built for power.

The Navy has, of course, built ships around advancements in engineering systems before: Nuclear power or steam engines, for example, have led to big leaps in naval design. But the large surface combatant is being built around a significant challenge. Weapons systems of the future such as high-powered electronic warfare systems, laser weapons, and high-powered radars and sensors will put an uneven and sometimes even unpredictable load on a ship's power system.

That's pushing the Navy toward an integrated power system, says Rear Adm. Paul Schlise.

“We're going to incorporate an Integrated Power System that has the ability to power up the weapons and sensors of the future,” Schlise said during the Surface Navy Association's virtual annual symposium. “[That's] the key to the realm here. It's DDG-1000-like, in some respects in that it'll have that integrated power system, but the most important thing is including the space, weight, power and cooling — reestablishing those margins to incorporate future systems that are not yet mature.

“There's a lot of promise in some of those systems, but that integrated power system is the key to incorporating those feature systems that we're looking at, that we think are going to be part of that class of ship.”

What is an integrated power system?

Mark Vandroff, a former senior director of the National Security Council and a retired Navy captain who was the program manager for the Navy's new DDG Flight III program, said it's a major break from the kind of system used on Arleigh Burke-class destroyers.

“A major advantage of a ship with an integrated power system is that the power generated by any of the ship's engines can be used for either propulsion or electricity, rather than having engines solely dedicated to one or another.”

On today's destroyer, and on the Ticonderoga-class cruisers, the ship has separate systems that power the twin propulsion shafts, which turn the ship's propeller and generators that work exclusively to power the ship. An integrated power system, similar to what is on the Zumwalt-class destroyers, uses all the ship's engines to make electricity that turns the propellers and powers the weapons and sensors.

The integrated power system on Zumwalt is a new layout that uses advanced induction motors to produce up to 78 megawatts of electrical power, far more than any previous destroyer or cruiser.

But the issue with the large surface combatant is a little more complicated than just producing a ton of power. What energy weapons or advanced electronics systems do is put a huge tax on the electrical system of a ship, often requiring more power than the ship is able to produce at one time.

So while the integrated power system isn't new, the kinds of demands these new systems will place on the power grid meant to run everything is a new kind of challenge, said Matthew Collette, associate professor of naval architecture and marine engineering at the University of Michigan.

Therefore, the Navy must figure out how to best store energy so it can be available to meet unpredictable demands.

“The issue is, this is different than integrated electric propulsion, which we've had on cruise ships and offshore supply vessels for two decades at this point, and it works really well,” Collette said. “But on those ships, all the electrical loads are pretty well behaved: They rise and fall slowly, and there's no issues with the stability of the electrical system.

“High-powered radars, high-powered electronic warfare, certainly rail guns, the lesser extent lasers — they all ask for power really quickly, faster than a mechanical generator can suddenly produce it. So now you have to think about whether [you] use batteries or flywheels or capacitors or other techniques to get the energy available on the timescale that the load needs.”

It's not an insurmountable problem, and it is one the Navy has used elsewhere. The electromagnetic launch system on the Ford-class, which has had its share of technical problems, operates off a flywheel energy storage system. But the new power system already has Congress nervous, and lawmakers are pressuring the Navy to build a land-based engineering site to test out the power and propulsion system before getting too deep into the design work for the ship.

Collette said that's a sensible approach, and that on the timeline the Navy is discussing, the technology should be sufficiently advanced to support the new class.

“There's been a ton of work done on this, and I think it's certainly something that in the timeframe of a large surface combatant, I would expect would work,” he said.

https://www.defensenews.com/digital-show-dailies/surface-navy-association/2021/01/13/for-the-us-navy-the-future-of-shipbuilding-and-warfare-is-in-the-power-plant

On the same subject

  • Report slams Norwegian Navy for training, safety shortfalls in the run-up to frigate sinking

    November 13, 2019 | International, Naval

    Report slams Norwegian Navy for training, safety shortfalls in the run-up to frigate sinking

    By: David B. Larter WASHINGTON – The bridge watch team on the stricken Norwegian frigate Helge Ingstad was distracted, inadequately trained and failed to take adequate precautions while transiting close to land, according to an accident report released Friday by the Norwegian government. The watch standers on Helge Ingstad, which collided with the Maltese-flagged tanker Sola TS and subsequently sunk outside Sture Terminal near the mouth of the North Sea, were busy conducting a watch turnover and attempting to conduct training during the navigation in the channel, which it was conducting at 17-18 knots. “The Navy lacked competence requirements for instructors. The Navy had assigned the officer of the watch a role as instructor which the officer of the watch had limited competence and experience to fill,” the report reads. “Furthermore, the Navy had not given the officer of the watch assistant sufficient training and competence to operate important bridge systems while training the officer of the watch assistant trainee at the same time.” The Norwegian publication VG reported last December that the ship's captain, Capt. Preben Østheim, was asleep in his cabin during the transit through the strait near Sture, which is less than three miles across at its narrowest point. The report, which also faulted the tanker for failing to mitigate potential risks and the vessel traffic control service for inadequate monitoring, takes special aim at the Navy for a lack of qualified navigators, and for short-changing the training of junior officer, leaving bridge watch teams underqualified. “As a consequence of the clearance process, the career ladder for fleet officers in the Navy and the shortage of qualified navigators to man the frigates, officers of the watch had been granted clearance sooner, had a lower level of experience and had less time as officer of the watch than used to be the case,” the report found. “This had also resulted in inexperienced officers of the watch being assigned responsibility for training. The level of competence and experience required for the lean manning concept (LMC), was apparently not met.” The accident report shows that the bridge team confused the Sola TS for a stationary object on land, and because the watch standers were distracted with training, they were not fully engaged with monitoring the communications on the radio. “A more coordinated bridge team with more information sharing would have been more capable of detecting the tanker sooner,” the report said. “Achieving good teamwork is particularly challenging in the case of bridge teams whose members are constantly being replaced. “Furthermore, the bridge team was part of a culture characterized by great confidence in each other's skills, and this may have contributed to the perception of them being in full control of the situation and thus less vigilant and sensitive to weak signals of danger.” The report is part one of a two-part report and only encompasses the actions that led to the collision. Further findings about the actions after the collision will be released as part of a second report to be released later. ‘Not Particularly Demanding' According to the report, the transit through the body of water known as the Hjeltefjord “was not considered particularly demanding, as the fairway is open and offers a good view all around,” the report found, which likely contributed to a sense of complacence among the crew. That echoes the sentiments of the Capt. Østheim, who told VG he didn't think he needed to be on the bridge during that transit. “After 12 years at sea, I know the coast as my own pocket, so I know exactly when I need to be on the bridge and when I can rest,” Østheim told VG. There is generally little traffic through the channel and there is no traffic separation scheme. The Sola TS, which the report said was likely creating some visual confusion for Ingstad's watchstanders because of its illuminated deck lights at night, announced it was underway on the radio during the exact time that Ingstad's watchstanders were turning over, likely causing them to miss the transmission, the report reads. “At the same time as Sola TS notified of her departure from the Sture Terminal, the watch handover between the officers of the watch started on HNoMS Helge Ingstad, while the officer of the watch trainee continued to navigate the frigate,” the report reads. “During the watch handover, the officer of the watch being relieved and the relieving officer of the watch observed an object at the Sture Terminal, to starboard of the frigate's course line. The ‘object' was observed both visually and on the radar display in the form of a radar echo and AIS symbol. The two officers of the watch discussed, but did not clarify, what the ‘object' might be. “Both officers of the watch had formed the clear perception that the ‘object' was stationary near the shore and thus of no risk to the frigate's safe passage.” The situation was made even more perilous by the fact that Ingstad did not have its Automatic Identification System on, which would have notified traffic service and Sola TS of Ingstand's location. Traffic Service lost track of Ingstad because operators had their displays zoomed in too far, the report found. Collision As the Ingstad came closer to the terminal, the Sola TS, which the officer was convinced was a stationary object by the terminal, was appearing on radar to have made some distance between the pier and the water, but the officer was still not sure it wasn't a stationary object becoming more clear on the radar screen because Ingstad was closer to it. “A more experienced officer of the watch would probably have had greater capacity to pick up on weak signals of danger and be better equipped to suspect that his/her own situational awareness suffered from misconceptions,” the report read. “The officer of the watch thought, however, that the course had to be adjusted slightly to port to increase the passing distance to the ‘object'.” In the minutes before the collision, the Sola TS established contact with Ingstad's officer of the watch to get them to take an avoidance maneuver by turning to starboard. But the watch still thought that the Sola was a stationary object and that turning to starboard would run into it. “When HNoMS Helge Ingstad did not alter course, the master on Sola TS ordered ‘stop engines' and, shortly afterwards, the pilot ordered full speed astern on the engines,” the report read. “These two measures were carried out only short time before the collision, and were therefore without material effect. “When the officer of the watch on HNoMS Helge Ingstad understood that the ‘object' giving off light was moving and on direct course to collide, it was too late to avoid the collision.” ‘I don't feel shame' The decision of the captain to not be on the bridge or, at the very least, to have posted a special navigation detail with the ship so close to land is perplexing, said retired U.S. Navy cruiser skipper Capt. Rick Hoffman, a career surface warfare officer. “If I'm within five miles of land I'm going to have some kind of navigation detail posted,” which in the U.S. Navy means a team of more qualified watch standers, extra lookouts and more than likely either the Commanding Officer, Executive Officer or both, would be on the bridge overseeing the watch. It's further perplexing as to why the officer of the deck, or officer of the watch, was conducting training during a transit so close to land, Hoffman said. “[The officer of the deck should be] looking out the window and completely focused on the transit,” he said. “We would not use that as a training opportunity. The OOD and the Conning Officer has no other task.” However, Østheim told VG in December he has no regrets about his actions, though he accepts that he was overall responsible for the ship. “I don't feel any shame,” he said. “As the ship's chief, I of course have the overall responsibility for the ship and its crew. It's extremely sad that this happened. It's an accident that should not happen, but I don't feel any shame.” https://www.defensenews.com/naval/2019/11/12/safety-report-slams-the-norwegian-navy-for-training-safety-shortfalls-in-the-runup-to-frigate-sinking/

  • Pentagon is rethinking its multibillion-dollar relationship with U.S. defense contractors to boost supply chain security

    August 14, 2018 | International, Aerospace, Naval, Land, C4ISR

    Pentagon is rethinking its multibillion-dollar relationship with U.S. defense contractors to boost supply chain security

    By Ellen Nakashima The Pentagon has a new goal aimed at protecting its $100 billion supply chain from foreign theft and sabotage: to base its weapons contract awards on security assessments — not just cost and performance — a move that would mark a fundamental shift in department culture. The goal, based on a strategy called Deliver Uncompromised, comes as U.S. defense firms are increasingly vulnerable to data breaches, a risk highlighted earlier this year by China's alleged theft of sensitive information related to undersea warfare, and the Pentagon's decision last year to ban software made by the Russian firm Kaspersky Lab. On Monday, President Trump signed into a law a provision that would bar the federal government from buying equipment from Chinese telecommunications firms Huawei and ZTE Corp., a measure spurred by lawmakers' concerns about Chinese espionage. “The department is examining ways to designate security as a metric within the acquisition process,” Maj. Audricia Harris, a Pentagon spokeswoman, said in a statement. “Determinations [currently] are based on cost, schedule and performance. The department's goal is to elevate security to be on par with cost, schedule and performance.” The strategy was written by Mitre Corp., a nonprofit company that runs federally funded research centers, and the firm released a copy of its reportMonday. “The major goal is to move our suppliers, the defense industrial base and the rest of the private sector who contribute to the supply chain, beyond a posture of compliance — to owning the problem with us,” said Chris Nissen, director of asymmetric-threat response at Mitre. Harris said the Pentagon will review Mitre's recommendations before proceeding. She added that the Department of Defense, working with Congress and industry, “is already advancing to elevate security within the supply chain.” Testifying to Congress in June, Kari Bingen, the Pentagon's deputy undersecretary for intelligence, said: “We must have confidence that industry is delivering capabilities, technologies and weapon systems that are uncompromised by our adversaries, secure from cradle to grave.” Security should be seen not as a “cost burden,” she told the House Armed Services Committee, “but as a major factor in their competitiveness for U.S. government business.” The new strategy is necessary, officials say, because U.S. adversaries can degrade the military's battlefield and technological advantage by using “blended operations” — hacking and stealing valuable data, manipulating software to sabotage command and control systems or cause weapons to fail, and potentially inducing a defense firm employee to insert a faulty component or chip into a system. “A modern aircraft may have more than 10 million lines of code,” Mitre's report said. “Combat systems of all types increasingly employ sensors, actuators and software-activated control devices.” The term “Deliver Uncompromised” grew out of a 2010 meeting of senior counterintelligence policy officials, some of whom lamented that the Defense Department was tolerating contractors repeatedly delivering compromised capabilities to the Pentagon and the intelligence community. Addressing the security issue requires greater participation by counterintelligence agencies, which can detect threats against defense firms, the report said, and ideally, the government should establish a National Supply Chain Intelligence Center to monitor threats and issue warnings to all government agencies. Ultimately, the military's senior leaders bear responsibility for securing the supply chain and must be held accountable for it, the report said. The Defense Department, although one of the world's largest equipment purchasers, cannot control all parts of the supplier base. Nonetheless, it has influence over the companies it contracts with as it is the principal source of business for thousands of companies. It can shape behavior through its contracts to enhance supply-chain security, the report said. Legislation will be needed to provide incentives to defense and other private-sector companies to boost security, Mitre said. Congress should pass laws that shield firms from being sued if they share information about their vulnerabilities that could help protect other firms against cyberattacks; or if they are hacked by a foreign adversary despite using advanced cybersecurity technologies, the report said. Contractors should be given incentives such as tax breaks to embrace supply chain security, the report suggested. The Department of Homeland Security is addressing the security of the information technology supply chain through its newly established National Risk Management Center. “What we're saying is you should be looking at what vendors are doing to shore up their cybersecurity practices to protect the supply chain,” said Christopher Krebs, DHS undersecretary for the National Protection and Programs Directorate. The National Counterintelligence and Security Center, an agency of the Office of the Director of National Intelligence that coordinates the government's counterintelligence strategy, said in a report last month that software-supply-chain infiltration has already threatened critical infrastructure and is poised to endanger other sectors. According to the NCSC, last year “represented a watershed in the reporting of software supply chain” attacks. There were “numerous events involving hackers targeting software supply chains with back doors for cyber espionage, organizational disruption or demonstrable financial impact,” the agency found. https://www.washingtonpost.com/world/national-security/the-pentagon-is-rethinking-its-multibillion-dollar-relationship-with-us-defense-contractors-to-stress-supply-chain-security/2018/08/12/31d63a06-9a79-11e8-b60b-1c897f17e185_story.html?noredirect=on&utm_term=.265ce85b6eb1

  • L'Europe de la Défense décolle

    February 18, 2019 | International, Aerospace, Naval, Land, C4ISR

    L'Europe de la Défense décolle

    La ministre des Armées Florence Parly et son homologue allemande Ursula von der Leyen ont donné le coup d'envoi industriel au système de combat aérien du futur (Scaf), mercredi 6 février. Ce projet doit remplacer le Rafale français et l'Eurofighter allemand à horizon 2035. Un petit pas pour les industriels de l'armement, un grand pas pour l'Europe de la Défense. Le 6 février, dans l'usine du motoriste Safran de Gennevilliers (Hauts-de-Seine), la ministre des Armées Florence Parly et son homologue allemande Ursula von der Leyen ont signé les premiers contrats d'études auprès des industriels pour lancer le système de combat aérien du futur (Scaf). Cet appareil doit remplacer à l'horizon 2035, les Rafale de l'armée française et les Eurofigther allemands. Dassault Aviation et Airbus vont bénéficier d'un financement de 65 millions d'euros pour mener les premières études de définition. Ils devront définir l'architecture de l'appareil et de son environnement immédiat comme les drones qui l'accompagneront dans sa mission ainsi que ses capacités à déjouer les défenses aériennes adverses. Article complet: https://www.usinenouvelle.com/article/l-europe-de-la-defense-decolle.N804990

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