Ask anything Thread

Discussion in 'Navy' started by Jeff Head, Apr 6, 2015.

  1. Tam
    Offline

    Tam Senior Member
    Registered Member

    Joined:
    Nov 3, 2016
    Messages:
    1,679
    Likes Received:
    2,882
    Amur/Lada class of submarines were a disaster in terms of their AIP system, not the rest of the sub. But if the sub was converted back to conventional diesel-electric without AIP, there is no reason for China to get this when China already has AIP submarines and the 039B is also a much bigger sub with the advantages of the size increase brings.

    As for developing newer submarines, Chinese availability when it comes to supercomputers will give the Chinese an edge in doing CFD towards hull design.
     
    KIENCHIN likes this.
  2. KlRc80
    Offline

    KlRc80 Junior Member
    Registered Member

    Joined:
    Aug 29, 2017
    Messages:
    107
    Likes Received:
    254
  3. Nill
    Offline

    Nill Just Hatched
    Registered Member

    Joined:
    Jul 18, 2018
    Messages:
    2
    Likes Received:
    2
    Is there any recent information on the development of the type 075? The Launch, in particular.
     
  4. H2O
    Offline

    H2O New Member
    Registered Member

    Joined:
    May 3, 2018
    Messages:
    95
    Likes Received:
    83
    The Type 075 haven't been built yet.
     
  5. Rachmaninov
    Offline

    Rachmaninov Junior Member
    Registered Member

    Joined:
    Jul 21, 2017
    Messages:
    119
    Likes Received:
    242
    I personally have seen one on board a Type 052D and a Type 052C so presumably they're quite common.
     
  6. Biscuits
    Online

    Biscuits Junior Member
    Registered Member

    Joined:
    Oct 4, 2018
    Messages:
    561
    Likes Received:
    782
    What will become of future PLAN ship names?

    China is running out of major cities to name destroyers after. There's a total of 34 provinces, with maybe an average of two prominient cities in each. Right now the PLAN has 33 destroyers and is readying 8 055s + 12 052Ds. That means almost every city name would be taken.

    Would names of past presidents be used? Or just cool sounding random names like the Royal Navy has?
     
  7. Bhurki
    Offline

    Bhurki Junior Member
    Registered Member

    Joined:
    Aug 30, 2018
    Messages:
    179
    Likes Received:
    93
    Likely to use names from "non prominent" cities, as the number of ships in a class increase, the relative importance of each ship decreases as a capital ship.
    The flagship destroyers like type 055 may be restricted to metropolis/province names but the smaller destroyer class is more likely to choose names from smaller cities, if anything, it increases a sense of stake that people have in a ship represented by a familiar name.
    The larger 'capital' ships are likely to recycle 'major' names from de commissioned ships of past, thats what normally happens in western navies like RN eg daring class
     
    mys_721tx likes this.
  8. mys_721tx
    Offline

    mys_721tx Junior Member
    Registered Member

    Joined:
    Dec 10, 2016
    Messages:
    150
    Likes Received:
    326
    There are precedents for the name recycling. Many Type 051's name were recycled for newer ships: Jinan (105 -> 152) Xian (106 -> 153), Yinchuan (107 -> 175), Nanjing (131 -> 155), Guangzhou (160 -> 168), etc. There are still five Type 051 in service (105 Kaifeng, 110 Dalian, 164 Guilin, 165 Zhanjiang, 166 Zhuhai). Should they be decommissioned, their names should became available.

    There was a tradition that each fleet names their ships by the cities in their jurisdiction. However, this was mostly ignored now as we can see in the case of 169 Wuhan (South Sea Fleet), 170 Lanzhou (SSF), 533 Taizhou (SSF), 569 Yuncheng (SSF), 559 Foshan (Ease Sea Fleet), 566 Huaihua (ESF). This change should make more names available too.
     
  9. Tetrach
    Offline

    Tetrach Junior Member
    Registered Member

    Joined:
    Jan 15, 2019
    Messages:
    117
    Likes Received:
    110
    Hello.

    I always wondered on the designs of ships radar, and why even with numerous technical and technologies breakthroughs, there are still many different patterns.

    British SAMPSON installed on the type-45:

    belfast-northern-ireland-4th-nov-2016-sampson-radar-system-of-royal-H7GYJE.jpg

    Chinese Type 346A on the type 052D:

    46381367515_4c56d97748_o.jpg

    APAR radar on the German F-124:

    170px-APAR.jpg

    why so many different designs ?
     
  10. Iron Man
    Offline

    Iron Man Captain
    Registered Member

    Joined:
    Sep 8, 2015
    Messages:
    2,856
    Likes Received:
    2,510
    Sampson is a rotating dual-face S-band AESA, hence its location inside the spherical dome on top of a mast. The idea was a lightweight radar that could be placed as high as possible on a ship without seriously affecting ship roll stability. In essence the Brits sacrificed the surety and size of fixed panels for improved horizon coverage. The 346A is a fixed quad-face S/C-band AESA, hence its lower position on the ship's hull. It sacrifices horizon coverage in exchange for preventing a single-point failure (radar rotation) and the ability to mount massive panels with more T/R modules. I have no doubt it's definitely less complex software-wise as well, though I have no idea how much more money this would save compared to a rotating radar. The APAR is a fixed quad-face X-band AESA. It can be quad-faced and still sit on top of a mast simply because the T/R modules for X-band radars are much smaller and lighter than those for an S-band radar like the Sampson. I suspect the "bubble" shape of each APAR panel may be related to cooling, specifically air-cooling of the T/R modules instead of or in addition to liquid cooling, in the same vein as the "bubble" that we see on 346 panels on the Type 052C.
     
    Tetrach likes this.
Loading...

Share This Page