09V/09VI (095/096) Nuclear Submarine Thread

[taxiya]

They will think out of the box for their nuclear propulsion systems. Whats to say they won't go the traditional nuclear propulsion route and just use the reactor along with existing AIP system. Basically a solid state heat/steam generating that an AIP system that is required to drive an electric engine !

Sorry to say, but your "brain-hole" is wide open. "brain-hole wide open" = "脑洞大开", you know it is not offense but a joke.

More seriously, can you tell us how an AIP works? Which of the 3 types of AIP today can use a nuclear reactor as heat source without being classified as just another nuclear reactor?

Although everything is possible given enough time, but one has to walk on the ground.

 

[EdT586]

Sorry to say, but your "brain-hole" is wide open. "brain-hole wide open" = "脑洞大开", you know it is not offense but a joke.

More seriously, can you tell us how an AIP works? Which of the 3 types of AIP today can use a nuclear reactor as heat source without being classified as just another nuclear reactor?

Although everything is possible given enough time, but one has to walk on the ground.

None, but the golden age of Chinese innovation is about to take place. The Sterling AIP is ideal as it is the preferred choice of the PLAN. Westerners always think the Chinese will copy them, but the truth is every system they have so called copy has be Chinafied to suit Asian characteristics from side arms to the chairs on the bridge. Just think of ASBM another PLA innovation that uses existing systems out of the box.

 

[taxiya]

None, but the golden age of Chinese innovation is about to take place. The Sterling AIP is ideal as it is the preferred choice of the PLAN. Westerners always think the Chinese will copy them, but the truth is every system they have so called copy has be Chinafied to suit Asian characteristics from side arms to the chairs on the bridge. Just think of ASBM another PLA innovation that uses existing systems out of the box.

I think you are suggesting nuclear reactor heated Sterling AIP. And I agree that does make technical sense, and I think PLAN has that in their road map as shown here (from last year).

But it is Small Nuclear Sub, not 09V or 09VI which is this thread about. 09V and 09VI will be steam-turbine powered (with or without IEPS)

Remember at this moment, we know nothing about the "3 loop Small Nuclear Sub". I have a blurry diagram of it in the following slid show which I can not see how it works. So your suggestion is still just your own idea albeit a possible one.

 

[Blitzo]

on the topic of 09V/09VI, here's a x post from CDF speculating about the layout of Bohai's new nuclear sub line...



===

...here is a particularly interesting GE photo from June last year, at a perspective that accurately shows the entrance of the halls at a frontal view. We can see how each of the three halls of the final assembly building seems to have two doors for each hall, and each door has a set of rail lines as well...

That makes six doors in total and six sets of rail lines leading into the overall assembly building. Each hall itself is about 40m wide mean measuring only the width of the doors, that would give 20m of width for work each submarine if there were two submarines built in each hall in parallel alongside each other... that may be reasonable if an SSN only has a beam of a western sub like 10-12m, but if it is Russian style then it may be 13-15m, which probably would not have enough space alongside for proper work to be done. Similarly, if they were constructing an SSBN -- even a western style SSBN -- that would still be some 13m or more.

So, it's also possible that the rail lines that extend into the assembly halls are meant to facilitate the movement of modules into the hall and "behind" a more complete submarine. After all the entire hall length is 288m so I'm convinced they won't be using an entire hall only for one submarine's worth of modules at any one time.

 

[Hendrik_2000]

The progress of the new nuclear submarine construction zone at the Bohai Shipyard.

 

[SinoSoldier]

A mysterious article recently popped up that talks about the inspection of a newly-constructed submarine at Bohai Shipyard.

While the language is quite generic and ambiguous, some Internet folks are convinced that the tone and lingo in the text suggests that the new submarine might be a 09VI.

人民日报: 军代表为国之重器监工

16.09.2018, People's Daily

渤海海滨驻扎着一支监造新型潜艇的军代表队伍，该队伍肩负着对该型装备的质量监督和军舰验收重任。这支被誉为“国之重器”监造官的英雄监造团队，伴随着改革兴装强军的铿锵步履，攻坚克难、接续奋战，在监造某新型潜艇征途上，用青春、热血、智慧和汗水，向党和人民交出了一份合格的答卷。

　　国家利益举头顶

　　凌晨3点，某新型潜艇建造现场依然灯火通明。刚刚合龙完毕的潜艇静卧船台，代表室全体军代表与船厂近千名技术人员各就各位，严阵以待。“总体试水准备!”“打开一道阀!”“加压!”……一道道口令声中，潜艇各个部位压力表指针指向预定刻度。副总代表马俊带领总体组军代表，和工人一起钻进仅容一人爬行的舷间舱室，对身下超过数十倍大气压的“火药桶”进行检查，逐个点位确认后才会在军检单上签字。对军代表来说，签字就是履行国家责任：必须对装备、对历史负责!

　　总代表张森森清晰记得在报验单上的第一次签字。那时，毕业不到半年的他第一次独立承担潜艇安全阀军检任务。安全阀，看似不起眼的一个小部件，却对潜艇安全意义重大。为了准备这个签字，张森森提前学习相关工艺规范、军检标准。现场反复确认质量后，才郑重地签下了自己的名字。

　　位卑未敢忘忧国。潜艇装备从生产到交付，大概要过“十二道关”，而军代表就是最后一道质量屏障。军代表把关尺度和底线，直接决定装备战斗力。代表室召开的大会小会上，总代表张森森反复强调：“潜艇要用几十年，战友们可能整个军旅生涯都在一条艇上度过。不把最高标准的潜艇交出去，怎么对得起国家、对得起战友？”

　　质量责任担肩头

　　在监看平台，8块高清液晶屏依次排列，每10秒变换一次图像：画面中，弧光闪闪、焊花四溅，工人穿戴着防护设备焊接艇体壳圈;最后一块屏幕上，一排排跳动的曲线，实时显示着焊接作业的电流、电压、环境温湿度参数……这是一套由代表室自主推进研发的“数字化焊接管理平台及监控终端”。该系统的诞生，源于一个多年的难题：一直以来，在关乎潜艇“生命”的耐压艇体焊接工作中，不同电焊工完成同等任务，质量参差不齐，一旦出现问题还难追溯。

　　以前焊工技艺吃“经验饭”，要精准监督，必须走数字化军检的路子。为此，总体组军代表组织多家科研单位，经过反复试验，研制了这套耐压艇体焊接可视化、数字化监督系统。通过该系统对焊接全程实时监测和记录，实现焊接数据精准分析评估，保证了耐压艇体焊接质量和可追溯性，耐压壳圈焊接缺陷大幅减少，时间缩短2/3，在国内同业处于领先。

　　合格不是目标，优秀才是起点。代表室确立了“质量优良、性能可靠、工艺精致、外观精美”的工程目标，向行业前沿迈进：艇体外表面防腐，用上了高铁、港珠澳大桥的技术;保温材料，用上了航天发动机上的复合陶瓷保温层技术……“质量第一”的理念，贯彻于监造全过程。

　　奉献青春终不悔

　　投身潜艇监造，健康难免受影响。γ射线探伤，是工业上一种用于检查焊缝内部缺陷的方法，由于放射性比X射线强，工业上只在很小范围内使用。因该新型潜艇自身结构的特殊性，只得选用γ射线探伤。一条焊缝有缺陷，实战中就可能造成艇毁人亡。因此，不管放射性多强，每次探伤作业，军代表都坚守现场，每一道焊缝成像片子都要一一看过，有疑点的还要复查一遍。

　　面对国与家、得与失的抉择，这群军代表总是把使命高高举起，从未退却动摇。电气组组长袁阳和家人两地分居6年，每天晚饭后，视频通话成了袁阳的“必修课”，“宝贝乖，想爸爸了没有？你来说一下，我们的故事昨天讲到哪了？”视频中他眼看女儿一天天成长，笑称自己的孩子“在手机中长大”。军代表唐熊辉在试验现场一待就是几个月，孩子叫第一声爸爸，就是通过手机;副总代表高原是两个孩子的爸爸，参加试航曾错过孩子的出生和一周岁生日，手机是他与孩子们沟通的主渠道。

　　这样一支倾力投入事业的团队，收获了鲜花和掌声：先后3次荣立集体二等功，7人荣立个人二等功，200多人获得单项奖励……代表室全体军代表将自己的人生融入潜艇监造事业，军检单上每一个签字、计划表上每一次出航背后，都蕴含着他们无悔的奉献和付出。

　　(姚江、焦建仓、冀志轩参与采写)

　　《 人民日报 》( 2018年09月16日 06 版)

My thoughts:

This submarine, if the article is indeed accurate, is most likely the 09IIIB rather than the next-generation 09V and 09VI. In fact, this is most likely the same submarine that was delivered to the PLAN in September of 2017. Most sources agree that the 09V has just entered or is about to enter the construction phase, and the 09VI would be built simultaneously or after rather than before.

 

[asif iqbal]

Someone needs to a do a proper in depth PLAN submarine review

So far

4 x Type 094 SSBN
3 x Type 091 SSN
2 x Type 093 SSN
4 x Type 093A SSN

So 4 x SSBN and 9 x SSN

all nuclear units built at Bohai

For SSK

11 x Type 035
12 x Type 039
12 x Kilo
13 x Type 039A/B

48 x SSK

SSK units built at JNCX and Wuchang

 

[gelgoog]

Given the large Chinese lithium-ion battery industry, I wonder why they don't simply use that in their diesel-electric subs, much like the Japanese have done with the Soryu class. Then there is the Shortfin Barracuda the Australians are getting which uses pump-jet propulsion.

The Stirling AIP systems are kinda heavyweight and take up a lot of space. I think that would be a nice design to aim at now that the Chinese have gone way beyond the Kilo class. A larger pump jet diesel-electric submarine with lithium-ion batteries.

 

[asif iqbal]

For a country like China battery wont cut it

Total different strategy

 

[Equation]

Given the large Chinese lithium-ion battery industry, I wonder why they don't simply use that in their diesel-electric subs, much like the Japanese have done with the Soryu class. Then there is the Shortfin Barracuda the Australians are getting which uses pump-jet propulsion.

The Stirling AIP systems are kinda heavyweight and take up a lot of space. I think that would be a nice design to aim at now that the Chinese have gone way beyond the Kilo class. A larger pump jet diesel-electric submarine with lithium-ion batteries.

For a country like China battery wont cut it

Total different strategy

Perhaps in the future China's submarine could be using the more advanced aluminum-graphene battery instead.

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