June 26, 2018 | International, Naval

Future US Navy weapons will need lots of power. That’s a huge engineering challenge.

WASHINGTON ― The U.S. Navy is convinced that the next generation of ships will need to integrate lasers, electromagnetic rail guns and other power-hungry weapons and sensors to take on peer competitors in the coming decades.

However, integrating futuristic technologies onto existing platforms, even on some of the newer ships with plenty of excess power capacity, will still be an incredibly difficult engineering challenge, experts say.

Capt. Mark Vandroff, the current commanding officer of the Carderock Division of the Naval Surface Warfare Center and the former Arleigh Burke-class destroyer program manager who worked on the DDG Flight III, told the audience at last week's American Society of Naval Engineers symposium that adding extra electric-power capacity in ships currently in design was a good idea, but that the weapons and systems of tomorrow will pose a significant challenge to naval engineers when it comes time to back-fit them to existing platforms.

“Electrical architecture on ships is hard,” Vandroff said.

Vandroff considered adding a several-megawatt system to a ship with plenty of power to spare, comparing it with simultaneously turning on everything in a house.

“When you turn everything on in your house that you can think of, you don't make a significant change to the load for [the power company],” Vandroff explained. “On a ship, if you have single loads that are [a] major part of the ship's total load, [it can be a challenge]. This is something we had to look at for DDG Flight III where the air and missile defense radar was going to be a major percentage of the total electric load ― greater than anything that we had experienced in the previous ships in the class. That's a real technical challenge.

“We worked long and hard at that in order to get ourselves to a place with Flight III where we were confident that when you turned things on and off the way you wanted to in combat, you weren't going to light any of your switchboards on fire. That was not a back-of-the-envelope problem, that was a lot of folks in the Navy technical community ... doing a lot of work to make sure we could get to that place, and eventually we did.”

In order to get AMDR, or SPY-6, installed on the DDG design, Vandroff and the team at the DDG-51 program had to redesign nearly half the ship — about 45 percent all told. Even on ships with the extra electric-power capacity, major modifications might be necessary, he warned.

“We're going to say that in the future we are going to be flexible, we are going to have a lot of extra power,” Vandroff said. “That will not automatically solve the problem going forward. If you have a big enough load that comes along for a war-fighting application or any other application you might want, it is going to take technical work and potential future modification in order to get there.”

Even the powerhouse Zumwalt class will struggle with new systems that take up a large percentage of the ship's power load, Vandroff said.

“Take DDG-1000 ― potentially has 80-odd megawatts of power. If you have a 5- or 6-megawatt load that goes on or off, that is a big enough percentage of total load that it's going to be accounted for. Electrical architecture in the future is still an area that is going to require a lot of effort and a lot of tailoring, whatever your platform is, to accommodate those large loads,” he said.

In 2016, when the Navy was planning to install a rail gun on an expeditionary fast transport vessel as a demonstration, service officials viewed the electric-power puzzle as the reason the service has not moved more aggressively to field rail gun on the Zumwalt class.

Then-director of surface warfare Rear Adm. Pete Fanta told Defense News that he wanted to move ahead with a rail gun demonstration on the JHSV because of issues with the load.

“I would rather get an operational unit out there faster than do a demonstration that just does a demonstration,” Fanta said, “primarily because it will slow the engineering work that I have to do to get that power transference that I need to get multiple repeatable shots that I can now install in a ship.”

https://www.defensenews.com/naval/2018/06/24/future-navy-weapons-will-need-lots-power-thats-a-huge-engineering-challenge/

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April 3, 2020 | International, Aerospace

Saab supplying Sweden with firefighting capabilities
April 3, 2020 - Saab has received an order from MSB, the Swedish Civil Contingencies Agency, regarding Sweden's aerial firefighting capabilities. The contract is valid during the years 2020-2023. The order is for the capability to fight fires with two firefighting aircraft, from 1 April to 30 September, through to 2023. Under the contract there is also the opportunity to trigger an option for two more aircraft, beginning with the 2021 fire season. This resource will be available for Sweden and for EU. Saab has during a period of one year, established aerial firefighting capabilities, using the Air Tractor AT-802 F firefighting aircraft, with the associated pilot and technician skills, as well as the specific permits for their operation. "We are part of Sweden's national security and our specialist expertise and flight permits made it natural for us to complement our operations in Nyköping with aerial firefighting capabilities," says Ellen Molin, Head of Saab's Support and Services business area. "It is important to have a prompt national response to forest fires, and this service is going to help deliver that." The AT-802 F is a water-bombing aircraft that in the event of a forest fire can release 35,000-50,000 litres of water per hour. The firefighting aircraft will be based in Nyköping, where Saab already has aviation operations for, among other things, aerial target towing and support for the Swedish Coast Guard's aircraft. From Nyköping, firefighting aircraft can within two hours reach Copenhagen or eastern Finland and within three hours, Luleå in the north of Sweden. If necessary, the firefighting aircraft can be based at another location with advanced technical and maintenance resources. Rapid response to fires is crucial. For further information, please contact: For further information, please contact: Saab's press centre +46 (0)734 180 018 presscentre@saabgroup.com www.saabgroup.com www.saabgroup.com/YouTube Follow us on Twitter: @saab Saab serves the global market with world-leading products, services and solutions within military defence and civil security. Saab has operations and employees on all continents throughout the world. Through innovative, pragmatic and collaborative work, Saab constantly develops, adapts and improves new technology to meet the changing requirements of our customers. View source version on Saab: https://saabgroup.com/media/news-press/news/2020-04/saab-supplying-sweden-with-firefighting-capabilities/
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November 23, 2018 | International, Aerospace, Naval, Land, C4ISR

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By Beth Reinhard ,Tom Hamburger and Emma Brown The powerful U.S. defense industry is facing a rare challenge to its influence on Capitol Hill as support for arms sales to Saudi Arabia has rapidly eroded following the killing last month of journalist Jamal Khashoggi at the hands of Saudi government operatives. The defense industry's typically aggressive lobby has gone quiet as gruesome details of Khashoggi's death have leaked and American intelligence officials have laid blame at the feet of Saudi Crown Prince Mohammed bin Salman. Even as President Trump has reiterated his support for continued sales of U.S. weapons to the kingdom, congressional opposition to those sales and to U.S. support for the Saudi-led war in Yemen has mounted in recent weeks — testing the power of an industry that has sold tens of billions of dollars' worth of weapons systems to the kingdom since the 1950s. Growing bipartisan support for Senate legislation to cut off the arms sales marks a historic disruption in a seemingly inviolable arms-for-oil trade relationship that stretches back decades and is an unusual setback for one of the most influential lobbies in Washington. In the coming weeks, key senators are expected to push for a vote on a measure that would impose sanctions on Saudi officials responsible for Khashoggi's death and suspend many weapons sales to Saudi Arabia until it ceases airstrikes in Yemen that have killed tens of thousands of civilians. The bill represents one of the first major breaks between congressional Republicans and the White House, which has embraced Saudi Arabia as a key Middle Eastern ally — a strategy driven by Jared Kushner, Trump's son-in-law and senior adviser, who forged a strong personal relationship with the crown prince. Full article: https://www.washingtonpost.com/politics/killing-of-khashoggi-tests-us-defense-industry-as-backlash-builds-on-capitol-hill/2018/11/21/15a1df52-dc7d-11e8-aa33-53bad9a881e8_story.html

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Future US Navy weapons will need lots of power. That’s a huge engineering challenge.

On the same subject

Osprey fleet won’t return to full flight operations until 2025 The U.S. military's V-22 Osprey enterprise will be slow to return to full operations as a wide-ranging review of its training and resources continues.

Osprey fleet won’t return to full flight operations until 2025
The U.S. military's V-22 Osprey enterprise will be slow to return to full operations as a wide-ranging review of its training and resources continues.