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October 21, 2020 | International, Land, Security

BAE Offers Truck-Mounted Howitzer For Army Stryker Units

Already fielded in Sweden — and mounted on a Volvo truck — BAE's 155 mm Archer will compete in a US Army “shoot off” early next year.

WASHINGTON: The Army is seeking a self-propelled replacement for its venerable towed artillery pieces. The old ones can't keep up with mechanized Stryker units and lack armor protection. BAE Systems says its Archer armored howitzer is the quickest cannon on the draw — a life-or-death factor in fast-moving future combats.

The US is experimenting intensely in how to speed the process from detecting a potential target to sending accurate target coordinates to a specific gun. Once Archer receives such target coordinates, it can come to a stop and open fire within 20 seconds, said Henrik Knape, a BAE exec based in Sweden, where the gun is already in service. Within two minutes from that first shot, Knape went on, the truck-mounted 155mm howitzer can fire another five to seven rounds, get back underway, and put 500 meters (a third of a mile) between itself and the location it fired from.

That's a long enough distance in a short enough time that retaliatory fire from the enemy's artillery is probably going to miss. Even for an advanced adversary (pronounce that “Russia”), which uses specialized counter-battery radars to track the trajectory of incoming rounds and calculate the precise position of the unit firing them, it will take multiple minutes to bring its own guns or drones to bear.

In US operations, the time from detecting a target to firing on it is typically “tens of minutes.” Experimental artificial-intelligence systems can cut that to tens of seconds, but those are years from being battle ready.

Archer has other advantages as well, Knape and his US-based colleague Chris King told a small group of reporters:

  • It's been in Swedish service since 2016, with the Defense Ministry asking Parliament to fund another 24 guns, so it's already extensively field-tested.
  • It's armored against shrapnel and small arms, in case the enemy does get close.
  • Its long barrel – 52 calibers, a third longer than the standard US howitzer – gives it extended range, comparable to the tracked ERCA howitzer entering service with US armored units in 2023. That gun is already qualified in US testing to fire precision-guided projectiles like Raytheon's Excalibur and BAE's own BONUS.
  • And it's mounted on a six-wheel-drive, articulated Volvo chassis with enough cross-country mobility to keep up with the Army's 8×8 Strykers, which currently have only towed guns to accompany them.There are smaller wheeled artillery vehicles on the market than Archer, which doesn't fit on the standard C-130 turboprop transport, Knape and King acknowledged. (We check out a Humvee-mounted 105 mm cannon here).But none of them, they argue, has Archer's combination of firepower, protection, and quickness.
  • The secret to that speed is automation, BAE says. While the US Army's current systems – both towed howitzers and the armored M109 Paladin – still rely largely on human muscle to manhandle heavy shells into the gun, Archer has a built-in autoloader. While well-trained human crews can actually fire faster than autoloaders for brief periods, the mechanical systems don't get tired or injured, and they allow for a much smaller gun crew. Archer can theoretically operate with a single soldier aboard, although it's designed for a crew of three – all of whom can stay inside the armored cabin while the weapon fires and reloads.https://breakingdefense.com/2020/10/bae-offers-truck-mounted-howitzer-for-army-stryker-units/

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  • How did the two offerings competing to be the US Army’s future engine measure up?

    June 10, 2019 | International, Aerospace

    How did the two offerings competing to be the US Army’s future engine measure up?

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While the cost of GE'S engine seems to have been a deciding factor, the document outlining the service's criteria to determine a winning engine design to move into the engineering and manufacturing development phase states that “all non-cost/price factors when combined are significantly more important than cost/price factor.” According to that chart, the Army said it would primarily measure the engine submissions against its engine design and development, followed by cost/price, followed by life-cycle costs and then small business participation in order of importance. The Army assessed ATEC's and GE's technical risk as good and gave ATEC a risk rating of low while it gave GE a risk rating of moderate when considering engineering design and development for each offering. Both GE and ATEC had moderate risk ratings when it came to engine design and performance. And while GE received a technical risk rating of moderate for component design and systems test and evaluation, ATEC received low risk ratings for both. Almost all other technology risk assessments and risk ratings were the same for both engine offerings. GE scored “outstanding” in platform integration capabilities. Based off the chart, it appears ATEC won, so its likely the documents are not an exhaustive representation of how the Army decided to move forward with GE. While both ATEC and GE offered prices within the Army's requirements, GE came in 30 percent lower in cost. And according to Brig. Gen. Thomas Todd, the program executive officer for aviation, in an interview with Defense News in April, GE was also working on trying to shrink the timeline within the EMD phase by roughly a year. But, in ATEC's view, the charts show it had offered the best value product to the Army. 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When just going by the chart, GE's four moderate risk ratings in key categories means “they could have disruption in schedule, increased cost and degradation of performance,” Madden said. He added ATEC was also focused on lowering risk, so that, although the Army offered incentives to finish the EMD phase earlier than 66 months, ATEC presented a plan to complete at 66 months with a plan to look at acceleration wherever possible. ATEC is now pushing to be a part of the EMD phase, essentially extending the competition, so that more data on engines can be garnered. The Army had periodically weighed keeping the EMD phase competitive with two vendors, but ultimately chose to downselect to one. For GE, the Army made the right decision and had enough data to do so. “The U.S. Army competitively selected GE's T901 engine over ATEC T900 engine after more than 12 years of development,” David Wilson told Defense News in a statement. “Those 12 years included the Advanced Affordable Turbine Engine (AATE) program, during which both companies ran tow full engine tests,” he said. Additionally, both companies executed a 24-month technology maturation and risk reduction contract where GE self-funded and successfully completed and tested a third engine, a full-sized T901 prototype engine, with successful tests on all components, Wilson said. “We've done three full-engine tests and provided an unprecedented amount of test data to the Army for them to determine which engine was the best to move forward with in EMD,” he added. Funding a second engine through EMD would cost more than twice as much and delay critical Army modernization by at least two years, Wilson argued. https://www.defensenews.com/land/2019/06/07/how-did-the-two-offerings-competing-to-be-the-us-armys-future-engine-measure-up/

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