Chinese submarines thread

[sm68]

Re: Chinese sub thread

This is a more interesting photo taken by a Chinese military fan in the PLA's 80th celebration exhibition held currently in Beijing. It was indicated on the show board as a new type of conventional submarine of PLAN.

Compared with the picture below, noticed the similarity in bridges. According to the descriptive words under the picture, this is a concept of PLAN's next generation nuclear submarine with superconductive propelling system.

 

[kickars]

Re: Chinese sub thread

Wow,that's a small nuclear sub, only 4500ton! I know most people would say its bridge looks like an Russian design. But I think the bridge looks rather like a German design which is a good thing. 4500ton small nuclear sub, 9000ton 093(5)...does it mean PLAN wants its future sub fleet like the RN and USN? All nuclear? I mean for the past several years we didn't see much of new conventional sub design from PLAN (only the 041 Yuan-class). However for the nuclear side we have the 093(seen), 095(heard), 094(seen?), 096(heard). Now we have this "little" thing.

 

[Finn McCool]

Re: Chinese sub thread

Well I think that all this seems to prove the the 093 is obviously not in serial production which means that it was not satisfactory as already mentioned. The appearance of several variants (with/without diving planes in the sail) seems to indicate that it was an intermediate design used to gain technological expertise. I would go as far to say that it never really was intended to go into serial production; that's what the 095 is for. It will incorporate the lessons learned from the 093. If the first 093 was launched somewhere around 2000, as it quite possibly was considering Roger's timeline (I'm gonna go ahead and assume that's credible I really don't know enough about the history of Chinese sub development to comment), that would give plenty of time for lessons learned from the 093 testbed class to be incorporated into the now well underway development of the 095.

 

[tphuang]

Re: Chinese sub thread

This is a more interesting photo taken by a Chinese military fan in the PLA's 80th celebration exhibition held currently in Beijing. It was indicated on the show board as a new type of conventional submarine of PLAN.
[qimg]http://i11.tinypic.com/4mrgvt0.jpg[/qimg]
Compared with the picture below, noticed the similarity in bridges. According to the descriptive words under the picture, this is a concept of PLAN's next generation nuclear submarine with superconductive propelling system.
[qimg]http://i18.tinypic.com/6f4ooib.jpg[/qimg]

don't take it seriously, it's just a PSed photo.

Back on 093, one of the so called "big shrimp" on Chinese bbs mentionned how on the 093 photos, there wasn't much bubble generated by the propeller, most of the wave around the submarine was generated by the rest of the sub. That indicates the propeller is quite advanced. Anyone who knows much about propeller technology care to comment on this?

 

[crobato]

Re: Chinese sub thread

don't take it seriously, it's just a PSed photo.

Back on 093, one of the so called "big shrimp" on Chinese bbs mentionned how on the 093 photos, there wasn't much bubble generated by the propeller, most of the wave around the submarine was generated by the rest of the sub. That indicates the propeller is quite advanced. Anyone who knows much about propeller technology care to comment on this?

Well not so much but no surprise. This is what skewed designed propellers are meant for, but this is no longer new technology. The Songs and the Kilo 636s all have this too. It is assumed that the 093 will use a skewed prop.

 

[fishhead]

Re: Chinese sub thread

Well not so much but no surprise. This is what skewed designed propellers are meant for, but this is no longer new technology. The Songs and the Kilo 636s all have this too. It is assumed that the 093 will use a skewed prop.

Low rotation speed is the key, that will reduce the bubles and also has many other benefits. But low speed leads to low propelling power, that's where the complicated propeller shape kicks in, to maintain the propelling power effeciency at the low speed. Advanced NC tooling and hydrodynamics are needed here.

Another factor is the engine to propeller speed ratio, the lower propeller speed, more complicated speed transmission design is required - a big gear box is not a good solution here. So it represents the progress in two aspects.

 

[sm68]

Re: Chinese sub thread

don't take it seriously, it's just a PSed photo.

Back on 093, one of the so called "big shrimp" on Chinese bbs mentionned how on the 093 photos, there wasn't much bubble generated by the propeller, most of the wave around the submarine was generated by the rest of the sub. That indicates the propeller is quite advanced. Anyone who knows much about propeller technology care to comment on this?

The first photo may be PSed, the 2nd looks real, although it is just a concept model. But there is a rumor for a long time that PLAN has more interest in small-sized nuclear reactor than AIP. Considering China is one of the few countries that have been pumping huge money into superconductor research for a longtime, it is reasonable to speculate that PLAN has or is having a project of small-sized superconductive prepelling nuclear submarine. Superconductive ship prepelling system is actually technologically feasible because Japan has launched a superconducting ship, Yamato 1, in 1990's.

Source:

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[crobato]

Re: Chinese sub thread

It might be a 093 sub or the Loch Ness monster having a fart here.

And don't tell me this is an early 688. The 688 does not a protrusion on top of the diving planes and has protrusion on top of the hull which this sub does not have. Furthermore, the "deck" between the sail of the 688 to the bow is rather straight, while this sub is sloped, much like the other pics of the 093.

 

[Roger604]

Re: Chinese sub thread

This is really strange.

It's not the same 093 as the most recent series of picture, because there are diving planes on the sail. And the sail here is not as long as the ones in the recent series.

It's probably not the same 093 as this one below, because the conning tower has windows at the top and some notches (?) behind. In addition, the slope on the top of the sail is different.

But if you look at the most recent series of pictures, that submarine has notches in the back, and the conning tower has windows.

So there must be at least 3, and more likely 4, Type 093's.

 

[crobato]

Re: Chinese sub thread

The TV cam does not have sufficient resolution but it appears that the sub just surfaced and water is pouring down from the top of the tower, which can hide the notches on the back and the windows on the front of the tower.

If you look closely under the diving planes at the point where the sail meets the hull, you faintly see the vertical lines like you see in Hui Tong's 093 sail pic.

Addendum on second thought, the sub may be an Ohio class. Not very sure, thats the other sub that has this frontal outilne.