PLAN Type 035/039/091/092 Submarine Thread
- Thread starter crobato
- Start date
Re: PLAN submarines Thread II
Anyway, I found this picture in Jonathan Wen's blog, actually posted last year and I don't know where he got it from. Allegedly it may be the 093 without the planes on the sail. At first glance, looks like a Kilo, but the way the ridge is running near the spine, which is very evident even with a blurry picture, is far too thin to be a Kilo. The ridge is necessary to house the retractable diving planes that will be top of the hull. There also appears to be a torpedo hole on the right side of the sub, far too right for the Kilo. The Kilo only has two torpedo tubes on the upper level, both near the center, while the 093, following the Han, has four torpeodo tubes in a line on the upper level. The sub does not have the proportions as well of a Kilo, seems a bit way long while the sail seems quite square. Hard to make out with absolute certainty however, for now, it's possible its a picture of the elusive plane less 093.
Anyway, I found this picture in Jonathan Wen's blog, actually posted last year and I don't know where he got it from. Allegedly it may be the 093 without the planes on the sail. At first glance, looks like a Kilo, but the way the ridge is running near the spine, which is very evident even with a blurry picture, is far too thin to be a Kilo. The ridge is necessary to house the retractable diving planes that will be top of the hull. There also appears to be a torpedo hole on the right side of the sub, far too right for the Kilo. The Kilo only has two torpedo tubes on the upper level, both near the center, while the 093, following the Han, has four torpeodo tubes in a line on the upper level. The sub does not have the proportions as well of a Kilo, seems a bit way long while the sail seems quite square. Hard to make out with absolute certainty however, for now, it's possible its a picture of the elusive plane less 093.
Attachments
-
093_woplanes.jpg
Re: PLAN submarines Thread II
Yes, the one(s) in Hainan are modified or already. Modified is kind of misleading, for changes of this nature, the subs are practically rebuilt.
Changes to the improved Han includes
---new anecholic rubber tile coating, which makes the subs look dark. The Hans were blue grey before.
---Installation and white markings to indicate flank sonars
---a new wake sensor in the bow.
---Highly likely that the propeller has been changed to s 7 bladed skewed one, in which case, the reduction box is changed slong with it.
---A new bow sonar
---Possibly a new reactor.
---Expected capability to use YJ-83.
Yes, the one(s) in Hainan are modified or already. Modified is kind of misleading, for changes of this nature, the subs are practically rebuilt.
Changes to the improved Han includes
---new anecholic rubber tile coating, which makes the subs look dark. The Hans were blue grey before.
---Installation and white markings to indicate flank sonars
---a new wake sensor in the bow.
---Highly likely that the propeller has been changed to s 7 bladed skewed one, in which case, the reduction box is changed slong with it.
---A new bow sonar
---Possibly a new reactor.
---Expected capability to use YJ-83.
maozedong
Banned Idiot
Re: PLAN submarines Thread II
I think these 091 have to be change the reactor,Otherwise, they should be eliminated - like the other two had been retired old 091,They do not deserve modified.the old reaction is too bad, and China already used new reactor technology on 093/094.
I heard that the last three 091s,before they are modified,they have the ability to launch cruise missiles,may now be further improved for this.
I think these 091 have to be change the reactor,Otherwise, they should be eliminated - like the other two had been retired old 091,They do not deserve modified.the old reaction is too bad, and China already used new reactor technology on 093/094.
I heard that the last three 091s,before they are modified,they have the ability to launch cruise missiles,may now be further improved for this.
Last edited:
Re: PLAN submarines Thread II
The fuel rods on the old reactor should have died out some time ago, and in addition to potential corrosion issues, it may just be better to change to the new reactors used on the 093/094. The new reactor is also going to be safer, and safety and reliability alone would have justified the move, with being more quiet to operate on top of that. That also increases the production of said reactor and lowers its cost. This can also improve the performance of the 091 given it has less displacement than the 093.
The fuel rods on the old reactor should have died out some time ago, and in addition to potential corrosion issues, it may just be better to change to the new reactors used on the 093/094. The new reactor is also going to be safer, and safety and reliability alone would have justified the move, with being more quiet to operate on top of that. That also increases the production of said reactor and lowers its cost. This can also improve the performance of the 091 given it has less displacement than the 093.
Re: PLAN submarines Thread II
yeah, I'd think that the old reactor must be replaced by now, considering the ones in Chinese subs probably have a much shorter life expectancy than Western ones. But the issue is, how much improved are they. They can't possibly just put the ones from 093 in there, that would likely be a different size.
yeah, I'd think that the old reactor must be replaced by now, considering the ones in Chinese subs probably have a much shorter life expectancy than Western ones. But the issue is, how much improved are they. They can't possibly just put the ones from 093 in there, that would likely be a different size.
Re: PLAN submarines Thread II
Historically nuclear subs have indeed had their nuclear reactors replaced by another reactor of a later generation. For instance, the original USS Seawolf (SSN-575, not the Seawolf class) has a liquid Sodium reactor but when that was considered unsafe, it was changed to a PWR. The Alfa class also had one of the subs changed from its lead bisimuth reactor to a PWR one. There are also cases of nuclear subs where their older reactors were changed to newer generation ones during refit like subs of the US Skate class. The first SSN, the Nautilus, also had its reactor changed during its life time.
One theory I have is that the 093 nuclear power plant may be in fact, first tested on one of the 091s as a test bed. I have another theory that it may also be possible that old reactor containment vesssel (housing plus its piping and other components) are retained, but the old reactor itself is refueled using a modified version of the core reactor from the 093. This theory is based on cases where US nuclear subs have their reactors refueled from modified cores of different reactor designs, and those that did it were those of the Thresher and early LA class.
Historically nuclear subs have indeed had their nuclear reactors replaced by another reactor of a later generation. For instance, the original USS Seawolf (SSN-575, not the Seawolf class) has a liquid Sodium reactor but when that was considered unsafe, it was changed to a PWR. The Alfa class also had one of the subs changed from its lead bisimuth reactor to a PWR one. There are also cases of nuclear subs where their older reactors were changed to newer generation ones during refit like subs of the US Skate class. The first SSN, the Nautilus, also had its reactor changed during its life time.
One theory I have is that the 093 nuclear power plant may be in fact, first tested on one of the 091s as a test bed. I have another theory that it may also be possible that old reactor containment vesssel (housing plus its piping and other components) are retained, but the old reactor itself is refueled using a modified version of the core reactor from the 093. This theory is based on cases where US nuclear subs have their reactors refueled from modified cores of different reactor designs, and those that did it were those of the Thresher and early LA class.
maozedong
Banned Idiot
Re: PLAN submarines Thread II
I always think those rectors already be changed in end of 90s or begging of 2000s,Including replacing a muffler watts, these rumors had been there for a long time, of course, these are not confirmed, is speculation.
But these reactors is China's first generation of the old things, to explore research on the manufacture, but the 1990s, China has continuously sent to Russia for study, I believe the late 1990s had been able to create new reactors, at least some manufacturers improved reactor 091/092 replacement. Han and xia are well know noise, said that in 1995 PLAN had the naval exercise in Yellow Sea, there are two Han-class power system a problem, the reason that China will not sit idly by but until today, 2008 , is also under consideration.
I always think those rectors already be changed in end of 90s or begging of 2000s,Including replacing a muffler watts, these rumors had been there for a long time, of course, these are not confirmed, is speculation.
But these reactors is China's first generation of the old things, to explore research on the manufacture, but the 1990s, China has continuously sent to Russia for study, I believe the late 1990s had been able to create new reactors, at least some manufacturers improved reactor 091/092 replacement. Han and xia are well know noise, said that in 1995 PLAN had the naval exercise in Yellow Sea, there are two Han-class power system a problem, the reason that China will not sit idly by but until today, 2008 , is also under consideration.