Chinese submarines thread

[Violet Oboe]

Re: Chinese sub thread

@AssassinsMace:
Of course ONI and DIA are aware of these subs although the dynamics of the recent (since '04) developments could have come as a gradual surprise for them. (...measured by their pre '03 knowledge)

Interestingly DoD decided to keep its knowledge under wraps since the regular reports to Congress about China's military did not disclose anything for years now a Senator/Representative capable of using a computer would not have already discovered in advance on the net.

There is existing a classified version of this document which probably has more substantial content but judging from past experience some of these information bits would have leaked in D.C. over the years but so far remarkably little has surfaced. Some of the known anti China hawks in Congress would have disseminated ´useful information´with glee to their buddies in the media but the stories of known anti China journalists have been also not quite impressive (...indeed I have to admit that known China basher Bill Gertz was correct on some developments described in his articles! ).

 

[daveman]

Re: Chinese sub thread

Hello y'all, I have been lurking around the forum reading up on all of your refreshing inputs for years now, but this is my actual first post.
I just came across this article on Yahoo.com:

Please, Log in or Register to view URLs content!

The article says that scientists have discovered a way to reverse the "Casimir Effect," a phenomenon that usually causes objects to stick together. By reversing this phenomenon, we can cause small objects to repel from each other on a nano level instead of sticking to each other. I'm curious if the Chinese Navy is aware, or even have researched this technology. I believe this reverse Casimir can be applied to the "mounting points" of Submarine engines to reduce vibration (noise) from the largest source of a submarine's noise pollution.

Peace

 

[Roger604]

Re: Chinese sub thread

PLAN has revealed that they have a new torpedo, the Yu-6. The Sinodefence main site says it was probably canceled. Of course, we now know it wasn't.

The Yu-6 is obviously a clone of Mk 48 (maybe even Mk 48 ADCAP). Mk 48 has pump jet propulsion. This suggests to me that PLAN has the technology to put pump jets on submarines too. And perhaps it will be fitted on a near future version of its nuclear submarines.

 

[crobato]

Re: Chinese sub thread

Going with a pump jet, or magnetoheterodyne (or whatever it is spelled) is the next stage in nuclear sub evolution. I believe that is what the PLAN is aiming for the long run. The concept is more interesting if combined with HTGR or High Temperature Gas Cooled Reactor, as pressurized steam is a constant source of noise on its own.

 

[tphuang]

Re: Chinese sub thread

PLAN has revealed that they have a new torpedo, the Yu-6. The Sinodefence main site says it was probably canceled. Of course, we now know it wasn't.

The Yu-6 is obviously a clone of Mk 48 (maybe even Mk 48 ADCAP). Mk 48 has pump jet propulsion. This suggests to me that PLAN has the technology to put pump jets on submarines too. And perhaps it will be fitted on a near future version of its nuclear submarines.

you mean this article?

祖国水下兵器发展闯新路——记国家科技进步一等奖获得者董春鹏

今年2月底，在北京召开的国家2006年科技进步奖励大会上，在陕军工单位——中国船舶重工集团公司705研究所的总设计师董春鹏荣获国家科技进步一等奖。作为国家某重点型号研制开发的总设计师，董春鹏打破国外技术封锁，为我国水下兵器发展探索出了新路。

董春鹏参与和领导的多种重点型号项目，分别获得了国家科技进步一等奖，中国国防科工委、中国船舶重工集团公司特等奖，其他科研成果分别获省部级科技进步一、二等奖。特别是由他主持设计的国家某重点型号科研项目，从项目立项到产品设计、研制到最终试验成功，走过了十年的漫长历程，这一依靠自主创新完成的重大科研项目，总体性能达到了国际先进水平，创造出了我国在该技术领域的四个第一，走出了一条中国特色自主创新的道路，为实现我国海军现代化建设和水下武器装备技术创新做出了重大贡献。

1966年董春鹏以优异的成绩从中国科技大学毕业，来到位于西安的中国船舶重工集团公司705研究所工作。1995年，国家某重点型号项目历经坎坷终于立项。它是打破国外高技术封锁，实现我国水下武器装备行业跨越式发展的研制项目。其科研需求非常迫切，而且所采用的新技术占到三分之二以上。当时国内预研基础非常薄弱，对外引进难度和风险很大，该型号能否研制成功，一时间成为业内议论的焦点。

董春鹏受命于这个关键时刻，他怀着对祖国的挚爱，对事业的追求，以强烈的忧患意识承担了这一高性能重点项目研制任务。他说：“我的人生坐标就应该定位在水下武器装备行业打翻身仗的艰苦历程上。”此后的十年里，他一直奋斗在崎岖的征途上：没有假日，加班加点地学习、工作，熟悉各系统的专业技术，批阅成百上千份图纸文件，思考和决策许多重大技术问题……他像陀螺一样，不停地运转着。就这样，十年如一日，他主持完成了该型号的方案论证、工程设计、工程研制、设计定型等各个阶段的工作。
在长期从事型号研制工作中，董春鹏建立了一套“严格科研程序”和“严格质量管理”办法，保证型号研制不出反复，一次成功。在研制工作中，常常发生技术、进度和质量的冲突，每当出现这种情况，他始终坚持既定程序，一丝不苟。某型号产品进入调试、试验阶段后，时间紧、任务重，董春鹏要求按科研程序，提出“陆上台架试验不完成，暴露的问题不解决，不能下水。”在各方面的支持下，试验得以实现，通过试验暴露出的问题，经调整、修改后得到解决，在实航试验中，启动点火正常。

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The pictures of Yu-6 have been coming out for a while now, so I don't see why it's such a surprise that it has completed development successfully. Also, taking a look at its tail, I really don't see pump jet there.

 

[Roger604]

Re: Chinese sub thread

^ Mk 48 has a pump jet. So do you mean that Yu-6 is not an exact replica of the Mk 48?

Here's the Yu-6

And here's the Mk 48 (ADCAP?)

 

[tphuang]

Re: Chinese sub thread

^ Mk 48 has a pump jet. So do you mean that Yu-6 is not an exact replica of the Mk 48?

Here's the Yu-6
[qimg]http://img295.imageshack.us/img295/5606/14268296200708091103062br5.jpg[/qimg]

And here's the Mk 48 (ADCAP?)
[qimg]http://www.fas.org/man/dod-101/sys/ship/weaps/mk-48-dvic472.jpg[/qimg]

how can it be an exact replica? Yu-6 was developed to exceed the performance of ADCAP, but China does not have Mk-48's design or access to the subcomponents. But there has been some photos of the butt of Yu-6, does it look like pump jet?

 

[Roger604]

Re: Chinese sub thread

how can it be an exact replica? Yu-6 was developed to exceed the performance of ADCAP, but China does not have Mk-48's design or access to the subcomponents. But there has been some photos of the butt of Yu-6, does it look like pump jet?

Pics? Please post.

How can you be so sure China does not have access to Mk-48's design?

 

[tphuang]

Re: Chinese sub thread

Pics? Please post.

How can you be so sure China does not have access to Mk-48's design?

here is a picture of its but I guess

doesn't look like pump jet to me.

 

[RedMercury]

Re: Chinese sub thread

how can it be an exact replica? Yu-6 was developed to exceed the performance of ADCAP, but China does not have Mk-48's design or access to the subcomponents. But there has been some photos of the butt of Yu-6, does it look like pump jet?

Was the developmental goal reached? I haven't seen much about the Yu series in general.