<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/3f2b541c-de37-4a34-9b62-6864de1b9ec8/1DEF3B03-A1BF-4778-AEFA-2FA70CCEAD40/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.wired.com/science/discoveries/news/2007/06/underwater_guns" href="http://www.wired.com/science/discoveries/news/2007/06/underwater_guns" style="font-size: 11px;">www.wired.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.wired.com/science/discoveries/news/2007/06/underwater_guns">In recent years, several homeland security alerts have focused on the danger of scuba-equipped terrorists targeting docked Navy vessels or ocean-side nuclear plants. Now the U.S. military is quietly developing a new generation of underwater weaponry capable of warding off undersea trespassers with liquid bullets.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.wired.com/science/discoveries/news/2007/06/underwater_guns"><P> Chris Weiland of the Advanced Experimental Thermofluid Engineering Research Laboratory in the mechanical engineering department at Virginia Polytechnic Institute is looking at new ways of achieving cavitation by injecting pressurized gas into the path of the projectile. "Natural cavitation only takes place at very high speeds," says Weiland. "This can be dramatically reduced." </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.wired.com/science/discoveries/news/2007/06/underwater_guns"><P> Once a supercavitation bubble is established it can be maintained by venting rocket exhaust into it ("ventilated cavitation"), a system employed by the Russian Shkval torpedo. Developers of a modern Gyrojet pistol could use this method to give it greater range and power than any existing underwater weapon. </P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/1DEF3B03-A1BF-4778-AEFA-2FA70CCEAD40/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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