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Ghost: Stealth Attack Hydrofoil Uses Supercavitation

37 点作者 Hoff超过 10 年前

10 条评论

sandworm101超过 10 年前
Not stealth. Far to many flat 90&#x2F;45* surfaces and corners. Nobody with any understanding of radar was involved in the design of that thing.<p>Not supercavitating. Supercavitation is based on cavitation, not sucking down air from the surface. <a href="http://en.wikipedia.org/wiki/Supercavitation" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Supercavitation</a>. And the amount of energy needed to create a supercavitation void around those hulls ... The Shkval is essentially an underwater rocket and it still uses exhaust gases to top up the bubble in which it flies (see the little holes near the nose) <a href="http://en.wikipedia.org/wiki/VA-111_Shkval" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;VA-111_Shkval</a>.<p>Not a hydrofoil. No foils. It looks to be a SWATH hull (Small Waterplane Area Twin Hull) another great Canadian invention. <a href="http://en.wikipedia.org/wiki/Small-waterplane-area_twin_hull" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Small-waterplane-area_twin_hull</a><p>Who did this guy know at Businessweek to get this sales pitched turned into an &quot;article&quot;?
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bazzargh超过 10 年前
<i>Sancoff began contemplating ways to give back to his country. To him, that meant shifting his focus from medical devices to weaponry.</i><p>That&#x27;s a disappointing comment.
idlewords超过 10 年前
This thing looks like it could really turn the tide in our fight against Cobra.
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rdtsc超过 10 年前
Another military device using supercavitation is the Soviet (now Russian) supercavitating torpedo:<p><a href="https://en.wikipedia.org/wiki/VA-111_Shkval" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;VA-111_Shkval</a><p>Max speed is 200 knots (230 mph) and it can go for almost 10 miles. That seems almost unreal, an object that size, going at that speed under water.
dm2超过 10 年前
There are numerous problems with this ship but the main reason why it won’t be used is that the US Navy already has a very similar ship that has been in testing since 2006 and is all around better than the vehicle in the article.<p><a href="http://en.wikipedia.org/wiki/M80_Stiletto" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;M80_Stiletto</a><p>50+ knots top speed, 4 x 1,650 hp engines<p>can carry a landing craft, 12 troops, and up to 20 tons of cargo<p>“A key feature of this vessel is that it can set up a network between a special forces team by launching an unmanned aerial vehicle (UAV) that relays information between the team and boat. The Stiletto can also carry surveillance UAVs to provide reconnaissance for the SEAL team, and, using a clustered supercomputer on board, will be able to send real-time images to the team on shore.”<p>Cost between $6 million and $10 million each.<p>For extremely stealth missions SEALs would use a underwater vehicle deployed from a C-130, another ship, or a submarine. <a href="http://en.wikipedia.org/wiki/SEAL_Delivery_Vehicle" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;SEAL_Delivery_Vehicle</a><p>“The 88-foot (27 m) long vessel has a notable hull design, an M-shaped hull that provides a stable yet fast platform for mounting electronic surveillance equipment or weapons, or for conducting special operations. The hull design does not require foils or lifting devices to achieve a smooth ride at high speeds in rough conditions. Its shallow draft means the M80 Stiletto can operate in littoral and riverineenvironments and potentially allows for beach landings. The faceted design suggests that the vessel has a low radar signature (i.e., stealth) in the frontal aspect and somewhat so from the sides.”<p><a href="http://www.naval-technology.com/projects/m80-stiletto/" rel="nofollow">http:&#x2F;&#x2F;www.naval-technology.com&#x2F;projects&#x2F;m80-stiletto&#x2F;</a><p><a href="http://www.wired.com/2008/09/stiletto-vs-dru/" rel="nofollow">http:&#x2F;&#x2F;www.wired.com&#x2F;2008&#x2F;09&#x2F;stiletto-vs-dru&#x2F;</a><p><a href="http://www.gizmag.com/stiletto-experimental-ship-with-carbon-fiber-m-hull-design-tops-50-knots-60mph/5151/" rel="nofollow">http:&#x2F;&#x2F;www.gizmag.com&#x2F;stiletto-experimental-ship-with-carbon...</a>
kghose超过 10 年前
Also see ekranoplanes <a href="http://en.wikipedia.org/wiki/Ground_effect_vehicle" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ground_effect_vehicle</a><p>(And hydrofoils, I was very excited by hydrofoils when I was a kid)<p><a href="http://en.wikipedia.org/wiki/Hydrofoil" rel="nofollow">http:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Hydrofoil</a>
thechut超过 10 年前
Reminds me of the villains boat in Tomorrow Never Dies [1]<p>1: <a href="http://i.dailymail.co.uk/i/pix/2011/06/19/article-2005464-0CA0FEB500000578-484_634x261.jpg" rel="nofollow">http:&#x2F;&#x2F;i.dailymail.co.uk&#x2F;i&#x2F;pix&#x2F;2011&#x2F;06&#x2F;19&#x2F;article-2005464-0C...</a>
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rexignis超过 10 年前
Nothing like this will ever compare with a submersible in terms of &quot;stealth&quot;. Who knows, maybe there already exists a supercavitating shallow draft sub for the spooks to use.
hliyan超过 10 年前
Detailed schematics here: <a href="http://www.rexresearch.com/sancoff/sancoff.htm" rel="nofollow">http:&#x2F;&#x2F;www.rexresearch.com&#x2F;sancoff&#x2F;sancoff.htm</a>
harywilke超过 10 年前
Isn&#x27;t cavitation a bad thing when trying to be quiet in the water?