Japan starts developing next-generation Stirling submarines

38
Japan began to research, design and develop a successor to its Soryu class submarines, which entered service in the 2009 year. This new type has been given the designation 29SS.


Soryu class

Soryu - the "most advanced" submarine in the world





As pointed out by Navy Recognition, Soryu has been widely recognized in the world as one of the best submarines and is often regarded as the most advanced and quietest. The diesel-electric ship using Stirling engines weighs approximately 4 tons and is the country's largest post-war submarine, "providing an important tactical and strategic advantage over competitors." Currently in Japanese fleet there are 10 submarines of this type. Three more units are under construction and should be commissioned before 2023.

Recently, the Soryu type has been upgraded. The new lithium-ion batteries will be installed on the new submarines as a low-noise power source, being one of the main technological breakthroughs expected to be inherited by the 29SS class.

29SS is a worthy successor


Mitsubishi Heavy Industries, a leading Japanese submarine manufacturer, presented a preliminary draft of the 29SS type. Allegedly, his first representative should be put into operation at the end of the 2020s. The R & D phase will take place from 2025 to 2028 a year, and the first ship of this class will probably be commissioned around 2031 of the year.

The 29SS is expected to retain the overall shape of the Soryu hull, but the new ships will have a number of design changes, including a significantly reduced sail [previously, the so-called control tower]. It is assumed that it will be shifted into the inside of the submarine, which will reduce the hydrodynamic resistance. This will have a positive effect on the submarine noise signature. In this case, the fins will be moved from the sail to the hull.

In addition, it is planned that 29SS will be equipped with an ejector (jet pump), which will replace the traditional screw used for the movement. However, this innovation is already expected on the future Australian submarines of the Attack class.

The 29SS is likely to retain the same armament as the Soryu submarines, which have six nasal 533-mm torpedo tubes, before the 30 89-type torpedoes or their Sub-Harpoon anti-ship missiles. Although there is a general tendency to install vertical launchers behind a submarine's sail, Japan does not have missiles designed for them.


Loading torpedoes in Soryu submarines
  • https://viettimes.vn/
Our news channels

Subscribe and stay up to date with the latest news and the most important events of the day.

38 comments
Information
Dear reader, to leave comments on the publication, you must sign in.
  1. 0
    7 July 2019 13: 57
    Bad news. I would very much like to hear in general terms what has been done by our scouts to access its secrets. They would greatly help our engineers to significantly advance the Lada project.
    1. +8
      7 July 2019 14: 12
      Quote: seti
      Bad news. I would very much like to hear in general terms what has been done by our scouts to access its secrets. They would greatly help our engineers to significantly advance the Lada project.

      The Stirling engine is really the quietest because it doesn’t have exhaust gases, and there is no combustion chamber and .... it can use the temperature difference in different layers of the ocean, but you are right! , maybe they use magic ... how is it? Japanese boch helps.?
      I hope Lada is not a car industry? wink
      1. +2
        7 July 2019 19: 19
        How is it not exhaust? Or do you seriously think that the difference in ocean temperature at a few meters of the height of the submarine is enough to twist any powerful generator?
    2. -2
      7 July 2019 15: 05
      Matvey, why?
      The Yankes have not built diesel-electric submarines for 60 years, the British retired diesel-electric submarines 25 years ago. The French created a UNIQUE nuclear submarine (abandoning their excellent "Scorpions"), which is 1.5 times cheaper than the Japanese nuclear submarine, at a speed of 20 knots and the possibility is under water TWO months.
      For action in the coastal zone, in seas such as the Baltic or Black (with a stretch of the Mediterranean) DEPL is still suitable.
    3. +1
      8 July 2019 00: 54
      Hooray patriotism is certainly not in fashion, but you are sorry, the article says, I quote: Japan started research. If I say that I started researching the perpetual motion machine based on dandelions, this does not mean that I have it in the number of dandelions. It is clear that the guys from the country of the rising sun are serious about business, but you also read the words. For example: in 2017, Russian scientists from the A. Lyulka Experimental Design Bureau developed and tested a radically new pulsed detonation engine with a two-stage combustion of a kerosene-air fuel mixture. Using this engine will increase the thrust-to-weight ratio of the aircraft by 1.5-2 times due to the increased specific thrust and lower mass of the product. Accordingly, due to the reduced fuel consumption, the flight range increases. The new development can find application in military missiles, unmanned aerial vehicles and in supersonic aircraft. But this is already experienced. Did you know? The Japanese have just started research, feel the difference? Yes it is air and not under water, but to say and do different things.
  2. -13
    7 July 2019 13: 57
    This is good - the more money they invest in the military-industrial complex, the less they will have for industry .....
    1. +10
      7 July 2019 14: 03
      Industry in Japan is already one of the most advanced in the world.
      1. +2
        7 July 2019 14: 26
        Quote: Vadim237
        Industry in Japan is already one of the most advanced in the world.

        I am more than sure that the Japanese will "be able".
        1. +1
          7 July 2019 16: 37
          In addition, private investors invest in industry, and the state invests in submarines. And this money will go precisely to the development of industry - to the production of submarines.
    2. 0
      7 July 2019 14: 04
      That is yes. But we would have access to their technology. It would be nice to tear off jepov from the United States in the near future. It's a shame that we no longer produce but buy outboard motors moto equipment in Japan and do not produce our own. And it’s time for our State Duma to take care of this. We have plenty of people with brains and hands.
  3. 0
    7 July 2019 14: 08
    You do what you want, but I’m going to settle down and check on everyone. if there is no access to the sea in my rural pond, otherwise I wouldn’t want to wake up one day and see this miracle, his mother is judo .... God saves a person who is safe.
  4. TTX
    -4
    7 July 2019 14: 17
    Soon I think Germany and Japan will be allowed rocket systems. The United States allowed them a revenge!
    So quiet again and against whom, they are also silent. Well, gentlemen, but this time do not deceive us, where is the Nazi den soldier
  5. +4
    7 July 2019 14: 20
    The process of ejection is the suction of a more dynamic stream of bulk material from the environment into the jet. The jet pump does not mean anything. The main thing is what physical processes are involved in creating a jet - either centrifugal forces, or plunger methods for creating excess pressure, or many others. However, all these methods do not correspond to the required quality factor, and most importantly energy efficiency. Moreover, rechargeable drives are also a problematic technology. In general, there is nothing to worry especially about.
  6. +3
    7 July 2019 14: 25
    A diesel-electric ship using Stirling engines,

    Again translation problems or again problems with the competence of the author?
    1. +4
      7 July 2019 14: 34
      In a certain combination you can combine all this. Dividing the functions of each process according to its tasks. However, recent events suggest that optimally minimized technologies are needed.
  7. +3
    7 July 2019 14: 33
    And how does this fit with the Japanese constitution?
    1. +1
      7 July 2019 21: 29
      Normally combined. It is believed that this is an analogue of WebMoney.
  8. 0
    7 July 2019 15: 00
    --- "... lithium-ion batteries as a low-noise power supply" - how about?! nickel and others screaming loudly?
    1. +2
      7 July 2019 15: 19
      Hi Vladimir soldier
      So I understand that they can swim more time on one charge. Recharging, these are included diesel engines, there is no other option. A diesel engine is noise, vibration, do not drown it out, isolate it.
      By the way, new batteries charge much faster, also reducing the noisy period.
      Something like this.
      1. +2
        7 July 2019 16: 47
        Quote: rocket757
        Charging is diesel included, there is no other option.
        Viktor, read the article carefully ... Stirling's dviglo is for this purpose, in order to recharge the AB under water, or crawl at 3-4 knots, working through the EG on the propeller (more precisely on the HED, and they have it all-mode ... they did it, and their mom!). And the diesel is in the NP for an accelerated transition to the area or a change of position, when you can not hide from us ... So, everyone will do it on the sly, "without noise and dust" (c).
        1. 0
          7 July 2019 17: 38
          Honestly, not specifically interested so far.
          Purely as a specialist in everything where "kerosene flows through the wires", I understand that on board the submarine there must be some kind of propulsion device for an electric generator, to spin it up and charge the batteries !!! Powerful, efficient, and therefore more noise reproducing than anything else!
          Maybe something else is used for a quiet move ..... now I'm interested, we will delve into the topic, do not mow the Schaub.
          In short, accepted! I gave my explanation.
          And the Japanese are in this band! And they have the best cars!
          1. +1
            7 July 2019 19: 02
            Quote: rocket757
            And the Japanese are in this band! And they have the best cars!

            Colossi, of course, they are "stripes", but ours are fighting over the direct conversion of diesel fuel into electricity. There is generally solid "chemistry" and no rotating parts. Now at least 3 of our VNEU companies are mumbled. Krylovtsy, Rubin and Malachite. It seems that we came closest to the end
            The Rubin Design Bureau ... announced its readiness to present an air-independent power plant for non-nuclear submarines in 2021-2022. And in April 2018, a prototype VNEU with a closed-cycle gas turbine engine was successfully tested by the Malakhit Design Bureau.
            But, something is missing ... "The Stone Flower does not come out" ...
      2. +1
        7 July 2019 20: 29
        Hello Victor. There is a closed engine system - Stirling (it is already low-noise). I'm not talking about the correctness of the proposal - the battery is a low-noise power source - some kind of stupidity.
  9. +3
    7 July 2019 15: 29
    They will crawl like fleas in a famous place in our East under the guidance of star-striped.
    Pacific Fleet must be understaffed.
  10. +1
    7 July 2019 16: 16
    In the eleventh boat, Soryu abandoned the Stirling engine and replaced the batteries with lithium and the compartment volume, where Stirling was in the first 10 boats of the series, now also lithium batteries.

    As a result, the underwater speed increased in comparison with Stirling, and the duration of the underwater economic course at least did not decrease.

    Stirling today is like steampunk already with progress in the battery.

    Consequently, the new boat after Soryu will also be without Stirling.
  11. 0
    7 July 2019 17: 00
    With dvigalov Stirling? With its penny efficiency? Dedicate. I do not know.
    1. 0
      8 July 2019 00: 39
      Quote: Monar
      With dvigalovom Stirling? With its penny efficiency

      Stirling engine 19-th century and DC 21-th ... two big differences! For example, instead of air, hydrogen is used ... sealed with a magnetic sealant ... etc.
  12. 0
    7 July 2019 17: 05
    "Stirling" is good where you need to save on the usual fuel ... He even has palm oil, even dried seaweed .. will gobble up everything. But the Japs are saving on black, because the efficiency of the "stirling" is rather dull, and I don't think they put it solely for environmental purposes. It would be interesting to know the output power per occupied volume .. also, most likely, the figure is small.
    shl. By the way, the "stirling" has one more disadvantage ... it is a brake one in terms of starting .. it is unrealistic to instantly heat up and get the rated power without constantly maintaining the temperature difference.
  13. 0
    7 July 2019 17: 59
    Und speed 6 knots?
    How else and soundless?
  14. 0
    7 July 2019 20: 46
    We should invite this Stirling to us, let him help ...
  15. 0
    7 July 2019 20: 58
    Quote: knn54
    Matvey, why?
    The Yankees do not build diesel-electric submarines which are 1.5 times cheaper than the Japanese submarines

    Quote: knn54
    Matvey, why?
    The Yankes have not built diesel-electric submarines for 60 years, the British retired diesel-electric submarines 25 years ago. The French created a UNIQUE nuclear submarine (abandoning their excellent "Scorpions"), which is 1.5 times cheaper than the Japanese nuclear submarine, at a speed of 20 knots and the possibility is under water TWO months.
    For action in the coastal zone, in seas such as the Baltic or Black (with a stretch of the Mediterranean) DEPL is still suitable.


    Sorya costs up to $ 600 million, and 25 years ago the French launched Triomphan at 3 billion per unit. What are the numbers? The Swedes can do the latest napl with serial production in the region of 200 million. The Japanese have everything expensive and more Soryu. And our Ash-tree can also leave 1.5 billion dollars.
    We need both small submarines such as Swedish and large cruising ones like Soryu to fight on communications. There is not enough money for Ash. If they are divided between the fleets, adjusted for repairs, then there will be 1-2 combat-ready maximum in the north and tof. This is not serious. Wunderwaffe, but meaningless.
  16. 0
    8 July 2019 00: 22
    Quote: Demagogue
    We need both small submarines such as Swedish and large cruising ones like Soryu to fight on communications.

    We need strategists for guaranteed sweeping on the American continent, what remains of the attack by Satan-2,3, and generalists hunting for aircraft carrier groups. A trifle, like England, to drown together with its fleet by two dozen Iskanders.
    And let no one have the illusion that a small world war is possible, where the fleets and armored armada will chase each other. There will be a quick and final Armageddon in 20 minutes destroying 80% of the population of the participating countries.
  17. 0
    8 July 2019 00: 31
    Well ... anything can happen! Once I read a description, in my opinion, of a Soviet project, where it was argued that a Stirling engine with a thermal "battery" (melt of lithium fluoride ...) has an energy reserve 8-10 times more than a "circuit" for a submarine made of lead-acid batteries with a DC motor ....
  18. 0
    8 July 2019 02: 10
    Samurai are still bugs. They pretended to be, Hiroshima and Nagasaki do not remember exactly who bombed. They all remember. I believe they will take revenge on you.
  19. 0
    8 July 2019 10: 12
    significantly reduced sail [previously called control tower]
    Mdaa ... So it appears Щ-421 under sails in the 1942 year ...
    Pretty clumsy translation from English. Sail in relation to a submarine is not a sail, but a cabin (more precisely, the fence of sliding devices).
  20. 0
    8 July 2019 11: 03
    History teaches that teaches nothing.
    It was seen little was the Japanese Hiroshima and Nagasaki ...
    Enough for the old people, and young samurai want their Tokyo and Sapporo ....
  21. 0
    8 July 2019 14: 29
    "... The Soryu is widely recognized in the world as one of the best submarines and is often regarded as the most advanced and quietest ...." ?! I do not understand, but what about our "Black Hole" ?!
  22. kig
    0
    9 July 2019 13: 25
    Batteries, hull, water cannon ... where is the Next Generation Stirling?

"Right Sector" (banned in Russia), "Ukrainian Insurgent Army" (UPA) (banned in Russia), ISIS (banned in Russia), "Jabhat Fatah al-Sham" formerly "Jabhat al-Nusra" (banned in Russia) , Taliban (banned in Russia), Al-Qaeda (banned in Russia), Anti-Corruption Foundation (banned in Russia), Navalny Headquarters (banned in Russia), Facebook (banned in Russia), Instagram (banned in Russia), Meta (banned in Russia), Misanthropic Division (banned in Russia), Azov (banned in Russia), Muslim Brotherhood (banned in Russia), Aum Shinrikyo (banned in Russia), AUE (banned in Russia), UNA-UNSO (banned in Russia), Mejlis of the Crimean Tatar People (banned in Russia), Legion “Freedom of Russia” (armed formation, recognized as terrorist in the Russian Federation and banned)

“Non-profit organizations, unregistered public associations or individuals performing the functions of a foreign agent,” as well as media outlets performing the functions of a foreign agent: “Medusa”; "Voice of America"; "Realities"; "Present time"; "Radio Freedom"; Ponomarev; Savitskaya; Markelov; Kamalyagin; Apakhonchich; Makarevich; Dud; Gordon; Zhdanov; Medvedev; Fedorov; "Owl"; "Alliance of Doctors"; "RKK" "Levada Center"; "Memorial"; "Voice"; "Person and law"; "Rain"; "Mediazone"; "Deutsche Welle"; QMS "Caucasian Knot"; "Insider"; "New Newspaper"