Chapter 990 The adult’s choice is to have it all


    After all, it is not a formal selection, and there are not many experts in the field of gas turbines sitting below.


    Yan Zhongcheng cannot spend several hours explaining the technical points of aeroderivatives.


    ?Furthermore, he has not really started to take over the design work of QC300. Even if he wants to talk about it, he can''t say much at the moment.


    Even today, when the Turbofan 10 has been produced and finalized, Chang Haonan is still the only one who can truly understand the key points of the design of this model from the inside out.


    In short, it took Yan Zhongcheng about twenty minutes to introduce all the content he had prepared.


    As for the comparison results of the two models…


    No results.


    The core purpose of today’s symposium is still exchanges.


    ??The navy must first determine its next shipbuilding plan.


    As for the selection, that is a matter for later.


    ?Of course, everyone still has a balance in their hearts.


    Originally, after Jacky Wen finished speaking, most people thought that "the old model will still be reliable in a short period of time."


    As a result, quite a few of them have now become “the new models seem to be quite stable”…


    Let’s not say that the latter has the upper hand, at least the balance has begun to swing from side to side—


    Intermittent cooling and reheating technology was mentioned on both sides.


    Even the content is similar, and the plagiarism check rate is suspected to be unable to pass the preliminary examination of the graduation thesis.


    And they are all painted cakes.


    The special design for stable operation under low working conditions was originally thought to be the trump card of 703.


    When I looked back, I saw a...shuriken was also pulled out from next door?


    In short, the styles are different, but the functions are similar.


    ?The conference room fell silent for a while.


    Everyone is thinking.


    For Jacky Wen, the only weakness that opponents can point to at present is the uncertainty of the research and development process.


    After all, the adjustable stator vane matching technology involves modifying the high-pressure compressor, and the risk is much higher than the 703 Institute''s solution of only adjusting the casing.


    But first of all, everyone is a decent person, and it is not good to be too aggressive in this situation.


    Secondly, someone else just came up with the example of turbofan 10.


    It’s not quite the same thing, but it’s certainly very convincing.


    For the Navy and the participants responsible for the overall plan design, there are even more things to consider...


    “Mr. Zhu, do you have a mature plan for the subsequent improvement of 052C...or at least an idea?”


    ?Li Jiang, the head of the Naval Equipment Department sitting in the first place, looked at Zhu Fuying next to him and asked first.


    The latter is the chief designer of the two models 052B/C. Of course, he has now been transferred to the deputy director and chief engineer of the 701 Institute.


    Belongs to the successor of the old senior Academician Pan Jingfu.


    “Originally there was…”


    ?Zhu Fuying exhaled a breath of helplessness, and then straightened her somewhat scattered gray hair:


    “However, the design of 052C... is actually mainly ship-based equipment. It has undergone a major adjustment in the middle, which has taken up many projects planned to be deployed in the next upgrade.”


    Even for the experienced Zhu Fuying, this situation is really rare -


    In terms of improvement, there are actually a lot of improvements that need to be made on the first two 052Cs.


    First of all, the new general-purpose vertical hair has a diameter of up to 850mm. Although the rows are more densely packed, it occupies a larger area than the previous special vertical hair that was specially used for Haihongqi 9.


    Secondly, the Z-12 planned to be put on the ship has a larger footprint (mainly wider) than the Z-9 and Ka-28. In order to ensure the speed, the 052 series has a relatively narrow hull width, so even if the single hangar is Setting it up on the left side still doesn''t leave much room on the other side.


    ?? And this "universal" vertical launcher is mainly for future war considerations. Currently, there is no second type of ammunition other than Haihongqi 9 that can be installed, and the Chinese Navy is in urgent need of means to attack the sea.


    Therefore, the two inclined quadruple anti-ship missile launchers in the middle and rear of the hull are still retained... In the end, we had to squeeze in two 8-unit vertical launchers between the anti-ship missile and the hangar, and they were not even placed on the whole ship. On the central axis, a 32+16 configuration was created.


    It is not very good in terms of firepower sustainability, and it is also very unfriendly to obsessive-compulsive disorder.


    Therefore, in the future, we must develop an anti-ship missile that is compatible with vertical launches, and remove the eight eye-catching YJ-62 missiles and replace them with vertical launchers.


    He even reserved space on the ship''s hull.


    ?However, this improvement is so small that it is hard to say whether it can be singled out as 052C(M). It is impossible to have a separate 052D model.


    ??But having said that, if you want to fundamentally solve the problem of insufficient space in the ship body, the amount of work will be huge...


    After organizing the language a little, Zhu Fuying continued to explain:


    "If the Navy believes that the current technical status of the 052C is suitable for batch construction as a main ship, then our next step is to fine-tune and optimize the surface equipment of this type of ship in batches to ensure that it can be built in the shortest possible time. Form combat effectiveness and mass production capabilities.”


    "But if we can obtain more powerful power, we can also consider further modifications based on the current hull, reducing the aspect ratio from the current 8.6 to about 8.2, and correspondingly increasing the displacement to the 8,000-ton level. In this way It can completely solve the problem of tight space on the ship body, and even reset the double hangar..."


    Obviously, as a purely technical person, he did not want to show too obvious tendencies, so he introduced the two current ideas.


    “Would the technical difficulty of the second option be too great, I mean... if the hull is adjusted?”


    As the person in charge of the equipment outlet, Li Jiang is naturally interested in more advanced options, but at the same time he also has to consider risks.


    “The technical difficulty is actually not bad.”


    Zhu Fuying replied:


    “Although 052 is a series, from the earliest Type 052 to the current Type 052B/C, a large-scale change has been made to the hull in the middle, so should we change it again... We also have experience.”


    "But considering that this change is not simply amplification, but also involves internal structural adjustments, the workload will indeed increase a lot, and the research and development cycle may be longer. At least it cannot be made and modified at the same time. I am afraid that there will be a stop in the middle... Uh... about three or four years..."


    In fact, he originally wanted to refer to the development cycle of 052B and say it would be six to eight years.


    ?But after thinking about it later, I realized that the conditions now are completely different from those ten years ago.


    ??If the gas turbine itself can be developed in time, then a single hull will not take so long anyway, so I changed my mind midway.


    And this seemingly casual change of words had a huge impact on Li Jiang''s heart.


    It is perfectly acceptable for the Navy to wait three to four years.


    ?According to the plan, even if the 052C continues to be built, it will have to wait until the GT25000 is fully domestically produced before starting to increase production.


    It will probably take about two years.


    ?Now as long as you wait a year or two more, you can get a completely new and upgraded model.


    Let''s make good money with blood.


    Just like this, the choice of introducing and localizing the GT25000 back then seems a bit clownish...


    To undertake this task, we even built an upgraded 703 institute based on it...


    ??If Chang Haonan saw this situation, he would definitely exclaim NTR in his heart.


    ??Although Li Jiang does not have this concept, he also feels that it does not seem appropriate.


    ?He turned his head slightly and glanced at Jacky Wen, who had a somewhat unpleasant look on his face.


    ?At this time, another officer next to him suddenly interjected and asked Yan Zhongcheng and Wen Xueyou on the other side:


    “Mr. Yan, Mr. Wen, after I just listened to your introduction, I have an immature idea.”


    For a time, everyone''s attention was attracted to him.


    “The plan proposed by Mr. Yan is to modify the design of the stator blades of the high-pressure compressor, while Mr. Wen’s plan is to open the casing at the leading and trailing edges of the moving blades, but the ultimate goal is to achieve a very Design point performance optimization.”


    “Then…is there a possibility that you two can combine technologies and jointly develop a model with better performance…”


    After listening to his suggestion, the two principals did not immediately express their opinions, but just lowered their heads in thought and remained silent.


    But Li Jiang''s eyes lit up instantly.


    (End of this chapter)