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posted by CoolHand on Thursday December 10 2015, @03:12AM   Printer-friendly
from the everyone's-a-superhero-everyone's-a-captain-kirk dept.

David Sharp reports at the Boston Globe that the the futuristic 600-foot, 15,000-ton USS Zumwalt, the largest destroyer ever built for the US Navy is heading out to sea for the first time for sea trials. The ship has electric propulsion, new radar and sonar, powerful missiles and guns, and a stealthy design to reduce its radar signature. Advanced automation will allow the warship to operate with a much smaller crew size than current destroyers. ''We are absolutely fired up to see Zumwalt get underway. For the crew and all those involved in designing, building, and readying this fantastic ship, this is a huge milestone,'' says the ship's skipper, Navy Capt. James Kirk. With an inverse bow jutting forward to slice through the waves. and sharp angles to deflect enemy radar signals, the Zumwalt-class destroyer looks like nothing ever built before. The Zumwalt — which will receive its "USS" designation when it is christened — also is to be a test-bed for one of the Navy's most futuristic weapons, an electromagnetic rail gun under development by the Office of Naval Research. It uses electromagnetic pulses to launch projectiles at Mach 7, or seven times the speed of sound, at targets up to 110 miles away.

However critics say the ''tumblehome'' hull's sloping shape makes it less stable than conventional hulls, although it contributes to the ship's stealth and the Navy is confident in the design. Doubts about the radical hull form emerged as soon as the shape was revealed in the competitive stage for what was first called DD-21, then DD(X). Ken Brower, a civilian naval architect with decades of naval experience says the ship will capsize in a following sea at the wrong speed if a wave at an appropriate wavelength hits it at an appropriate angle. "The trouble is that as a ship pitches and heaves at sea, if you have tumblehome instead of flare, you have no righting energy to make the ship come back up. On the DDG 1000, with the waves coming at you from behind, when a ship pitches down, it can lose transverse stability as the stern comes out of the water — and basically roll over."


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  • (Score: 3, Funny) by aristarchus on Thursday December 10 2015, @05:54AM

    by aristarchus (2645) on Thursday December 10 2015, @05:54AM (#274286) Journal

    I anticipate a "Kobayashi Maru" scenario, even without the middle initial. Live long and capsize!

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