Still Finding Better Ways To Use Our Tax Dollars

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    Last post ago over 5 years by wnanhee
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        "A new approach to submarine design could help to keep them hidden from detection by enemies.

        The concept involves a "fluid cloak", channeling water around the submarine as it moves to mask the trail of churning fluid that it would normally leave in its wake. To make this work designers have come up with the idea of encasing it within a mesh shell.

        A vehicle moving through a fluid normally disturbs the medium in two ways. First, some of the fluid gets dragged along with the vehicle, sapping its energy and slowing it down. Second, a turbulent wake forms behind it where fluid rushes in to fill the vacant space. The churning fluid in the wake in turn creates noise that reveals the vehicle's presence."


        DARPA is always at work.

        Source: DARPA
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        ..and how much will this cost Nan?  Billions no doubt.

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        Well, the estimate for just the concept, not the actual construction, 2.1 billion per sub.
        I would love to get paid 2.1 billion for just coming up with an idea, making a few powerpoint presentations, a few autocad drawings and a computer model; easy for something that doesn't exist shocked

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