Chapter 989 So terrifying.jpg
After Jacky Wen finished speaking on the last page of his PPT, he turned around, stood on the podium and looked around.
The following technical personnel from the Navy and other fields either lowered their heads in thought, nodded, or wrote furiously...
In short, they all showed a very serious attitude. .
Obviously, his introduction this time has worked well.
Seeing this scene, Jacky Wen couldn't help but breathe a sigh of relief.
His hands were clasped behind his back, as if he was looking down on the world.
Although the foundation of GT25000 is indeed not as good as QC300, this is mainly reflected in its design as an industrial gas turbine.
Whether it is power generation or pipeline power, there is no need to pursue ultimate compactness.
After switching to marine power, this aspect became a shortcoming that was difficult to optimize.
However, Jacky Wen felt that, regardless of future matters, if he ate the power system of the 052 series follow-up ship today, the problem should not be big.
On the one hand, the index performance of GT25000 is not bad, and it also has considerable upgrade potential, which is completely sufficient for the 052 series.
On the other hand, it is also more important.
He has seen the gas turbine designed for the Type 054 frigate based on the 606 turbojet 14.
Technically speaking it is indeed close to impeccable.
But it can be seen that the other party is still designing gas turbines with the same ideas as designing aviation engines.
For example, in order to improve fuel economy under normal conditions, a relatively low design point speed has to be selected, which causes the maximum power and corresponding efficiency of the speed to be affected to a certain extent.
It is precisely for this reason that today he specifically mentioned the adaptive processing technology of the receiver that can broaden the working range.
After all, even in a diesel-fuel alternating power system, the gas turbine cannot always operate at high speed.
Cruising diesel engines generally can only provide a speed of just over 10 knots. If you want to go faster, you have to start the gas turbine, whether it is 20 knots or 30 knots.
With this thought in mind, Jacky Wen slowly walked off the stage amid a burst of warm applause.
Even in the process of returning to his seat, he even made a slight detour and passed by Yan Zhongcheng.
As a result, I found that although the other party was also lowering his head to memorize something just now, the content was different from what I imagined——
Although it was just a matter of passing by, Jacky Wen still relied on his excellent With the dynamic vision, I caught sight of a piece of content.
“The casing treatment has little impact on the core part of the whole machine, and the effect is poor compared to xxxx technology...”
"Is it possible to consider combining receiver adaption and xxxx technology?"
"..."
"Hiss..."
Wen Xueyou held his breath almost subconsciously Take a breath.
Yan Zhongcheng’s handwriting is very fast and the time is short, so many of the handwriting can only be half recognized and half guessed.
But everyone is engaged in gas turbines, so most of the content is not difficult to guess.
Only the xxxx technology, I have no idea what it is.
Wen Xueyou took a few seconds to pull out all the proper nouns in his mind and compared them, but he couldn't find any that matched the number.
At this moment, he who was so confident just now finally realized that something was wrong.
Regardless of what xxxx is specifically, the purpose of taking notes does not seem to be, or at least not just to learn ideas as I thought before.
It's more like...
Preparing countermeasures.
This countermeasure is not even a temporary one.
But it was prepared in advance.
Yan Zhongcheng wouldn’t just make up a technical term to deceive everyone, right?
Just like that, when Jacky Wen sat back down in his seat, a thin layer of sweat even appeared on his forehead.
I didn’t even hear an engineer from the Shanghai 711 Institute asking technical questions.
It wasn’t until the other party called him again that he reacted.
Institute 711 is responsible for the research and development of marine diesel engines.
It's just that it's not the cruise main engine, but the power generation auxiliary engine.
"Mr. Wen."
The other party looked over and said:
"Is it possible that the technology you developed can be used in the intake rectification of internal combustion engines?"
Wen Xueyou had no choice but to turn his attention away from Yan Zhongcheng for a short time:
“Of course there is no problem in theory, but I remember that internal combustion engines do not rely on airflow characteristics like gas turbines. As long as sufficient air intake is ensured, it will be fine. …”
"Of course this is usually the case, but if it is a diesel engine equipped with a sequential supercharging system, in some special cases it is still necessary to make some adjustments to the air flow, but it does not need to be as precise as your steam turbine..."
"..."
While the two were discussing the issue, Yan Zhongcheng was already standing on the podium.
The conference room, which had been slightly noisy just now, became quiet again.
“I just listened to Mr. Wen’s introduction, which was very beneficial to me...”
After a brief opening remarks, Yan Zhongcheng directly praised Jacky Wen.
However, from the latter's point of view, this flattery seems to have a bit of yin and yang, and even the meaning of schadenfreude.
This made him frown.
The inner uneasiness became more and more intense.
“Compared to the GT25000, which is already very mature and has even undergone ship trials and sea trials, our QC300 should be considered a new face to our colleagues in charge of power system research and development.” Yan Zhongcheng said in his initial tone With a little smile, but when he said this, the topic immediately changed:
"However, judging from the performance indicators alone, comrades in the Navy may find it a bit familiar..."
As he spoke, he turned the PPT to the second page.
Up above is a quite detailed performance data table.
The content is naturally what Chang Haonan said before.
QC300 has not officially entered the research and development stage at this time, so it is naturally impossible to have such details as the power-speed curve.
However, as far as the current situation is concerned, it is enough.
Almost at the same time as the form was released, there were several bursts of exclamations in the venue.
It is not because of basic data such as power and efficiency -
Although these data are equally dazzling, Chang Haonan had already drawn the pie when the Aerospace Power Group was established.
It's a part that everyone has been mentally prepared for.
The key is the characteristics of this model.
Size, weight, box-packed design, and some modular ideas.
Although even a layman can tell at a glance that the QC300 and core machine are structurally very different from the TF39 and have no technical connection.
But for installation, use and maintenance, the shadow of LM2500 can indeed be seen.
This is also the suggestion given by Chang Haonan a few days ago -
For the Chinese Navy, LM2500 is the undisputed white moonlight as a ship power.
If the acquisition channels were not locked, there is a high probability that there would be no GT25000 at all.
Although the QC300 is not the LM2500, it can benchmark in all aspects and even surpass the newly installed LM2500+ in key indicators.
Even from an emotional point of view, it has enough lethality.
After deliberately pausing for a while, Yan Zhongcheng continued to enlarge his moves:
"Comrades should know that the turbofan 10 designed by the general manager of our office has been installed on the J-10A and J-11B models and is in service. , and officially passed the production finalization at the beginning of the year. It only took less than five years from the start of the project. Therefore, there is actually no need to worry too much about the development cycle of the QC300..."
"The current development of the Type 052C destroyer The first two ships are close to being launched, but as far as I know, there is no clear construction plan for the follow-up ships. Judging from the timetable, the QC300 can fully catch up with the progress of the follow-up ships and even the follow-up models..."
For the navy, this passage is absolutely lethal -
The speed at which China's aviation equipment has been introduced over the years is something that everyone can see.
It can even be said that the reason why the Navy has the idea of continuing to improve the 052C is largely influenced by this...
Or it is stimulated by this.
Now that Yan Zhongcheng has spoken out directly, he has naturally gained a lot of recognition.
As for some of the Spring and Autumn style of writing in this paragraph, such as "Turbofan 10 is responsible for the arrest of 606" and other details, no one cares about it.
Jacky Wen sat in the audience and adjusted his posture awkwardly.
He knew that if he only judged from the current situation, then the opponent could only have some advantages on the scene at most.
Just by mobilizing emotions and playing the emotional card, you can win for a while but not for the rest of your life.
After all, when making the final selection, everyone has to come up with detailed technical solutions.
But the words Yan Zhongcheng just wrote in his notebook made him unable to let go.
Thinking of this, Jacky Wen moved his eyes away from the curtain in front and turned to the seat where Yan Zhongcheng had just been seated.
The notebook was quietly placed on the small table next to it.
At the same time, Yan Zhongcheng’s introduction also happened to come to this part.
“Actually, after our QC130 was finalized, we also learned a lot of experience and lessons from it...”
He certainly couldn’t say that he had just asked Chang Haonan to cram him two days ago, so I have no choice but to push the source of this technology's ideas to the reflection on QC130.
However, this explanation is almost seamless, and it is impossible for people who do not know the inside story to find out what is wrong.
“Including what Mr. Wen just mentioned, naval gas turbines need to work at a speed far lower than the design point for a long time, so special attention needs to be paid to the actual performance under low operating conditions..."
Hear Here, Jacky Wen's heart suddenly tightened.
He knew the point was coming.
“In order to fundamentally solve this problem, we plan to use multi-stage adjustable stator vane matching technology on the high-pressure compressor of the QC300 to ensure its stability and high performance under all operating conditions. The basic principle is to select different stator blade angles of attack and blade tip clearances based on the air inlet flow characteristics of the compressor at different speeds..."
"..."
With a "click-" sound.
The pen in Jacky Wen’s hand fell off.
He has now thought that the "xxxx" that he could not understand before is actually the four words "adjustable static leaf".
Obviously, I still greatly overestimated the negative impact that lack of experience would have on the other party.
In other words, the other party's ability to self-correct is greatly underestimated.
Regarding the imperfections of QC130, others have already begun to make adjustments before the trial of 054 has begun.
It can almost be said that the celebration banquet and the reflection and summary meeting were held together.
Such efficiency, and such execution...
A sense of crisis suddenly came to my mind.
"What a terrible opponent..."
He bent down and picked up the pen, thinking silently at the same time.
(End of this chapter)