Errymath: coast guard vessel

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The idea of a Coast Guard is one that has blurred in recent decades, with US Coast Guard vessels<a class="externalLink" href="http://www.stripes.com/news/middle-east/coast-guard-team-fires-shot-at-iranian-dhow-in-persian-gulf-1.300099" rel="nofollow" target="_blank"> serving as far away from home as the Persian Gulf</a>
 on a regular basis. Still, the Chinese Coast Guard's upcoming 10,000 
plus ton super high-endurance cutters are clearly another sign of the 
country's extra-territorial ambitions.<br />
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For some prospective, America's largest non-icebreaker Coast Guard vessel is the<a class="externalLink" href="http://en.wikipedia.org/wiki/National_Security_Cutter" rel="nofollow" target="_blank"> <i>Legend Class </i>National Security Cutter</a>,
 with a displacement of about 4,500 tons fully outfitted. Once China's 
massive cutters comes online, some predict they will push well over 
12,000 or even close to 15,000 tons with all her systems installed. That
 is about three times the displacement of the National Security Cutter.<br />
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In other words, China's new class of Coast Guard vessels are freakin' huge. So big in fact that they will outsize America's <a class="externalLink" href="http://en.wikipedia.org/wiki/Ticonderoga-class_cruiser" rel="nofollow" target="_blank"><i>Ticonderoga Class </i>Guided Missile Cruisers</a> by as much as 50%.<br />
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There are two of these ships currently under construction at Jiangnan 
Shipyard in Shanghai. One has already received paint and appears to be 
ready for its sub-systems and missionized gear to be installed, while 
the other is still in an early stages finishing.<br />
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Reports state that these ships will be able to hit 25 knots and will be 
outfitted with 76mm naval cannons, two secondary gun turrets, two 
anti-aircraft<a class="externalLink" href="http://foxtrotalpha.jalopnik.com/the-seven-deadliest-naval-close-in-weapon-systems-1568291678" rel="nofollow" target="_blank"> CIWS mounts </a>as
 well as being able to carry at least a pair of large Z-8 multi-role 
helicopters. These helicopters, somewhat akin to a CH-53 Stallion, could
 move a lot of personnel and material very quickly without a port 
available.<br />
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The very existence of Japan's notoriously large, extremely long endurance, 9,000+ ton displacement, <a class="externalLink" href="http://en.wikipedia.org/wiki/Shikishima_class_%28PLH%29" rel="nofollow" target="_blank"><i>Shikishima Class</i> Coast Guard patrol ships,</a>
 of which there are two in service.<br />
From <a class="externalLink" href="http://foxtrotalpha.jalopnik.com/why-china-is-building-the-worlds-largest-coast-guard-1677699141" rel="nofollow" target="_blank">Why China Is Building The World's Largest "Coast Guard" Cutter</a><br />
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<br /><br /><a class="externalLink" href="http://foxtrotalpha.jalopnik.com/why-china-is-building-the-worlds-largest-coast-guard-1677699141" rel="nofollow" target="_blank"></a><br />
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<h1>
Crowdfund A Flying Jet-Powered Drone</h1>
<div class="field-subtitle">
    Today a drone, tomorrow a rocket replacement?<br />

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    <i><span class="author"><span class="label">By</span>
  
    Kelsey D. Atherton. Popular Science</span></i><span class="date timestamp-processed" data-timestamp="1420583438"></span>

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<img alt="JetQuad Concept Art" class="full-width unveil-processed full-visible" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/jetquad.jpg?itok=p0rAmDoX" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/jetquad.jpg?itok=FccaRnLn" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/jetquad.jpg?itok=goCXNeoJ" data-src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/jetquad.jpg?itok=FccaRnLn" height="569" src="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/jetquad.jpg?itok=FccaRnLn" width="640" />
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    JetQuad Concept Art. Fusion Flight<br />

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    <br />
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By all appearances, JetQuad looks like a supercharged version of the 
iconic quadcopter body, where a central structure houses controls and 
four peripheral engines that power the vehicle for stable flight. In 
action, however, it’s a very different beast. According to designer and 
Arizona State University PhD candidate Alexander Taits, the JetQuad of 
traveling at almost the speed of sound, and reaching altitudes up to 
33,000 feet.<br />

But Taits' <a class="linkTargets-processed external" href="https://www.kickstarter.com/projects/airbooster/jetquad-jet-engine-powered-quadcopter" target="_blank">JetQuad Kickstarter project</a> is not really about making a new recreational aircraft. Instead, it’s a test platform for another way to get to space.<br />

In the video for his Kickstarter campaign, Taits explains the advantages jets bring over rotors.<br />

<blockquote>
  "There is another application of the JetQuad, and that is the 
development of airbooster technology. JetQuad is nothing more than a 
small-scale version of an atmospheric booster stage for modern launch 
vehicles. One day, we hope to build much larger JetQuads that are 
capable of lofting even the heaviest of launch vehicles and boosting 
them out into orbit."<br />

</blockquote>
As shown in the video, previous single-engine jet boosters that Taits
 has made suffer from stability issues. Quadcopters, and likely 
quadjets, counter instability by having four engines operating 
simultaneously, creating a much smoother flying craft. The fuel needs of
 four engines are much greater than that of one, which is a major design
 constraint that could be better understood with a working scalable 
model.<br />

The Kickstarter campaign ends January 31st, and is seeking $15,000, 
primarily for jet parts and electronic components. Backers pledging over
 $100 will get small toy quadcopters, and backers pledging $500 or more 
will be invited to the JetQuad’s first launch in Phoenix, Arizona.<br />

[<a class="linkTargets-processed external" href="http://www.engineering.com/DesignerEdge/DesignerEdgeArticles/ArticleID/9284/Arizona-State-student-Kickstarts-JetQuad-a-quadcopter-powered-by-jet-engines.aspx?ENGCOM=" target="_blank">Engineering.com</a>]<br />

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The World's Largest "Coast Guard" Cutter

The idea of a Coast Guard is one that has blurred in recent decades, with US Coast Guard vessels serving as far away...

Errymath

The World's Largest "Coast Guard" Cutter

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