Errymath: type 091

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Hong Kong’s Sky Post says in its report “China’s next-generation nuclear submarine expected to be fully electrical powered ahead of the US in technology”<br />
That according to CCTV’s recent report, China’s next generation of nuclear submarine will adopt axis-free propulsion with very low noise. That is as good as US most advanced Seawolf- and Virginia-class nuclear submarines.<br />
What makes Chinese nuclear submarines more advanced than US ones are their integrated electric power systems. The system turns all the energy in a warship from its engine, whether nuclear or conventional, into electricity.<br />
It further reduces noise to make Chinese submarines quieter than America’s best nuclear submarines. Moreover, it enables a warship to use high-energy weapons such as laser and electromagnetic guns. Only a few surface ships in the world now including some Chinese ones use that high-tech system, but no submarines in the world have ever used that.<br />
China’s new-generation nuclear submarines will be the first submarines using such technology.
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<iframe width="560" height="315" src="https://www.youtube.com/embed/HeTNUWVbpZ0" frameborder="0" allowfullscreen></iframe>
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CCTV13 had a “Focus on the interview” segment on May 30,2017. 
They discussed the of electric propulsion technology power of Admiral Ma Weiming. 
There was some discussion of the technology and spin about how China was moving beyond copying to attempt to create breakthroughs.
The first few minutes of the video discussed telecommunication switching work of Zhang Ping.
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<blockquote class="twitter-tweet" data-lang="en">
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China's next generation nuclear submarine using full electric propulsion... <a href="https://t.co/5bNTlONE3y">https://t.co/5bNTlONE3y</a></div>
— CHARLES EDWIN DOBBS (@CHARLESEDWINDO1) <a href="https://twitter.com/CHARLESEDWINDO1/status/871018888867328001">June 3, 2017</a></blockquote>
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<a href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare" target="_blank">China's new submarine engine is poised to revolutionize underwater warfare</a></h2>
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<img alt="Red October Submarine" class="full-width shareable unveil-processed" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=2oVkI-EH&fc=50,50" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=uUPZ6NW2&fc=50,50" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=32SBCjk8&fc=50,50" data-src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=2oVkI-EH&fc=50,50" data-xlsrc="http://www.popsci.com/sites/popsci.com/files/styles/xl_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=TebWHrZ-&fc=50,50" src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/red_october_ssbn.jpg?itok=2oVkI-EH&fc=50,50" />
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Red October SSBN</div>
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<i>The Red October</i>, a fictionalized version of the Akula 
(NATO reporting name Typhoon) submarine, has two pumpjets built into its
 rear for silent propulsion (though implausibly stated to use a noisy 
magnetohydrodynamic drive in the movie). According to Chinese state 
media, the nation's new nuclear submarines will soon use a similarly 
silent, cutting-edge pumpjet.</div>
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Paramount Pictures<br />
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In Tom Clancy's book (and, later, the 1990 film) <i>The Hunt For Red October,</i>
 a Soviet submarine debuts a revolutionary, ultra-quiet engine that uses
 pumpjets and electrical propulsion technology to elude its foes.Chinese state media has 
reported that the nation is fitting its newest nuclear sub with an 
engine that sounds a lot like Clancy's imaginings in the real world.<br />
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<img alt="Rear Admiral Ma Weiming China electric propulsion pumpjet" class="full-width shareable unveil-processed" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=zcpsVLFw&fc=50,50" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=lVr8NfLs&fc=50,50" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=9esNMg7a&fc=50,50" data-src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=zcpsVLFw&fc=50,50" data-xlsrc="http://www.popsci.com/sites/popsci.com/files/styles/xl_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=bXsUgfA0&fc=50,50" src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/screenshot_2017-05-31_23.03.31.png?itok=zcpsVLFw&fc=50,50" /><a class="colorbox-button cboxElement linkTargets-processed" href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare?dom=rss-default&src=syn"> </a>
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The Admiral and the Pumpjet</div>
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During his interview on state television, Admiral Ma Weiming, 
developer of the rim-driven pumpjet, shows off a laboratory, with a 
schematic of the pumpjet visible in the background, at right.</div>
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CCTV 13<br />
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This 
month, Chinese state TV channel CCTV 13 broadcast an interview with a 
top Chinese naval engineer, Rear Admiral Ma Weiming. The admiral is 
notably responsible for the development of multiple Chinese naval 
electromagnetic programs, including the electromagnetic catapult and 
railguns. In the interview, he stated that the PLAN is fitting its 
newest nuclear attack submarines with a "shaftless" rim-driven pumpjet, a
 revolutionary and silent propulsion system.<br />
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<img alt="China Type 095 SSN nuclear submarine" class="full-width shareable unveil-processed" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/04/095-sub-6.jpg?itok=c8pEJoOJ&fc=50,50" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/images/2017/04/095-sub-6.jpg?itok=DWHJP-7m&fc=50,50" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/images/2017/04/095-sub-6.jpg?itok=jzz71c60&fc=50,50" data-src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/04/095-sub-6.jpg?itok=c8pEJoOJ&fc=50,50" data-xlsrc="http://www.popsci.com/sites/popsci.com/files/styles/xl_1x_/public/images/2017/04/095-sub-6.jpg?itok=UUnGz5ZZ&fc=50,50" src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/04/095-sub-6.jpg?itok=c8pEJoOJ&fc=50,50" /><a class="colorbox-button cboxElement linkTargets-processed" href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare?dom=rss-default&src=syn"> </a>
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Type 095 SSN</div>
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The Type 095 SSN, seen in this speculative fanmade CGI, will 
likely have VLS cells for launching a wide range of cruise missiles, 
pumpjet propulsion, and improved quieting technology. (This earlier CGI 
shows the Type 095 with a more conventional pumpjet, though.)</div>
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Medico-MAX<br />
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If the 
system is being put on the latest vessels, it is likely to be used on 
the first Type 095 nuclear attack submarine (SSN), which is under 
construction.</div>
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<img alt="Rim Driven Thruster Pumpjet" class="full-width shareable unveil-processed" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=VgsmDxau&fc=50,50" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=UKhJBnzc&fc=50,50" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=0FMZozd5&fc=50,50" data-src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=VgsmDxau&fc=50,50" data-xlsrc="http://www.popsci.com/sites/popsci.com/files/styles/xl_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=n5Rc1jNF&fc=50,50" height="456" src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/rim_driven_thruster.jpg?itok=VgsmDxau&fc=50,50" width="640" /><a class="colorbox-button cboxElement linkTargets-processed" href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare?dom=rss-default&src=syn"> </a>
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Rim Driven Thruster. (<i>shaftless electromagnetic propellers?</i>)</div>
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Shown here is a Schottel built rim-driven thruster, used to 
propel surface ships like yachts with minimal noise (the Chinese miltary
 Rim-driven pumpjet would look similar but much larger).</div>
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Schottel<br />
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A 
rim-driven pumpjet has a ring-shaped electrical motor inside the pumpjet
 shroud, which turns the vane rotor (a vane rotor has the fan blades 
attached to a rotating band built on a cylinder interior, as opposed to a
 propeller shaft) inside the pumpjet cavity to create thrust. Previous 
submarine pumpjets are "shrouded propellers," which consist of a tubular
 nozzle covering the propeller.<br />
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By removing the shaft of the propeller, 
the reduction in the number of moving parts decreases the noise made by 
the pumpjet, as well as saving hull space. Civilian manufacturers also 
claim that rim driven pumpjets are easier to maintain, and have less 
cavitation (bubbles that form during propeller movement), making them 
even more quiet.<br />
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<img alt="Rear Admiral Ma Weiming China electric propulsion" class="full-width shareable unveil-processed" data-lgsrc="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=pVYIxhym&fc=50,50" data-medsrc="http://www.popsci.com/sites/popsci.com/files/styles/medium_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=CjKR9E-J&fc=50,50" data-smsrc="http://www.popsci.com/sites/popsci.com/files/styles/small_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=CMSBCIgc&fc=50,50" data-src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=pVYIxhym&fc=50,50" data-xlsrc="http://www.popsci.com/sites/popsci.com/files/styles/xl_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=bBa0qW0V&fc=50,50" src="http://www.popsci.com/sites/popsci.com/files/styles/large_1x_/public/images/2017/06/admiral_ma_ieps.jpg?itok=pVYIxhym&fc=50,50" /><a class="colorbox-button cboxElement linkTargets-processed" href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare?dom=rss-default&src=syn"> </a>
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IEPS</div>
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Rear Admiral Ma presents a component of the new Chinese IEPS for 
naval warships; the Chinese variant is the world's first IEPS to run on a
 medium-voltage, direct-current system.</div>
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CCTV 13<br />
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Also in 
the video background was a large piece of electrical machinery, which is
 part of the PLAN's Integrated Electrical Propulsion System (IEPS). IEPS
 turns all the output of the ship's engine into electricity, unlike 
traditional propulsion designs, which convert engine and reactor output 
into mechanical action to turn the propeller shaft.<br />
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The high electrical output can be used to power motors for the 
propellers or potentially high-energy weapons. Additionally, IEPS has 
far fewer moving parts, making them quieter, and thus ideal for use on 
submarines. When coupled with quieter reactors like the Type 095's 
reported natural circulation reactor, the rim-driven pumpjet and IEPS 
can drastically reduce the acoustic signature of any SSN.<br />
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This combination, if it works, would be a significant gain for 
China's naval power. As China has gained in surface fleet numbers, 
stealthy planes, and longer-ranged missiles able to target U.S. carriers
 and air bases, America's submarine force has become viewed as its key 
advantage in any comparison. In turn, Chinese nuclear submarines have 
lagged behind competitors in their noisiness. Said another way, these 
innovations have the potential to strengthen a historic weakness.<br />
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The reporting is significant for two more reasons. First, it 
illustrates the new openness in Chinese state media to discuss the 
technology behind previously secretive nuclear submarines, suggesting a 
greater confidence in showing off new military technology in order to 
impress domestic and foreign audiences.<br />
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Secondly, if the system works, the Chinese may have stolen a march on
 the Americans and British, whose Columbia and Dreadnought nuclear 
ballistic missile submarine (SSBN) have the option for rim-drive 
pumpjets, but will not enter service until 2030. While the system would 
be on China's attack submarine, Chinese SSBNs could also use the 
rim-drive pumpjet to enhance their stealth and survivability—and, by 
extension, the credibility of China's second strike nuclear capability. 
These new submarine propulsion systems may not just power China's 
submarines of the future, but give Beijing a true superpower's 
underwater armada. <a href="http://www.popsci.com/china-new-submarine-engine-revolutionize-underwater-warfare" target="_blank"><i>Popular Science</i></a><br />
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Peek into first Chinese nuclear submarine

====================== Hong Kong’s Sky Post says in its report “China’s next-gene...

Errymath

Peek into first Chinese nuclear submarine

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