Chapter 989: So Horrible

When Wen Xueyou finished his last page of PPT, he turned around and looked around while standing on the podium.

The technicians from the navy and other fields were either bowing their heads in deep thought, nodding their heads, or writing furiously...

In short, they all showed an attitude of great importance.

Apparently, this round of his introduction was quite effective.

Seeing this scene, Wen Xueyou couldn't help but breathe a sigh of relief.

He put his hands behind his back, looking as if he was looking down on the world.

Although the foundation of GT25000 is indeed not as good as that of 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 extreme compactness.

After changing to marine power, this aspect has become a shortcoming that is difficult to optimize.

However, Wen Xueyou felt that, regardless of what would happen in the future, since he had taken over the power system of the subsequent 052 series ships today, there should not be any major problems.

On the one hand, the 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 more important.

He has seen the gas turbine designed by the 606 Institute for the Type 14 frigate based on the turbojet 054.

From a technical point of view, it is indeed close to impeccable.

But it can be seen that the other party is still using the same ideas as designing aircraft engines to design gas turbines.

For example, in order to improve fuel economy under normal conditions, a relatively low design point speed has to be selected, resulting in a certain impact on the maximum power and corresponding speed efficiency.

That is why he specifically mentioned the adaptive processing technology of the receiver today that can expand the working range.

After all, even in a diesel-fuel alternating power system, the gas turbine cannot always operate at a high speed.

A cruising diesel engine can generally only provide a speed of just over 10 knots. If you want to go faster, whether it is 20 knots or 30 knots, you have to start the gas turbine.

With this thought in mind, Wen Xueyou slowly walked down the podium amid warm applause.

Even on the way back to his seat, he took a detour and passed by Yan Zhongcheng.

It turned out that although the other party was also looking down and taking notes, the content was not quite the same as what he had imagined.

Although it was just a passing moment, Jacky Wen was able to catch a glimpse of some of the content thanks to his excellent dynamic vision.

"The treatment of the casing has little impact on the core part of the whole machine, and the effect is poor compared to xxxx technology..."

"Can we consider combining receiver adaptation with xxxx technology?"

"..."

"hiss……"

Wen Xueyou held his breath almost subconsciously.

Yan Zhongcheng's handwriting is very vigorous and flamboyant, and given the short time it took to complete the work, many of the words can only be half-recognized and half-guessed.

But since we are all working on gas turbines, most of the content is not difficult to guess.

There's only that xxxx technology, but I have no idea what it is.

Wen Xueyou spent a few seconds picking out all the proper nouns in his mind and comparing them, but he couldn't find a single one that matched.

This time, he who was full of confidence just now finally realized that something seemed to be wrong.

Regardless of what the xxxx is specifically, the other party's 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...

Prepare countermeasures.

This countermeasure was not even something that was thought up on the spur of the moment.

But it was prepared in advance.

Yan Zhongcheng would not make up a technical term on the spur of the moment to deceive everyone, right?

Just like that, when Wen Xueyou sat back in his seat, a thin layer of sweat even appeared on his forehead.

He didn't even hear an engineer from 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 a cruise main engine, but an auxiliary power generation engine.

"Mr. Wen."

The other party leaned over and said:

"Is it possible to use the technology you developed in the intake rectification of internal combustion engines?"

Wen Xueyou had no choice but to temporarily shift his attention away from Yan Zhongcheng:

"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 there is enough air intake, it will be fine..."

"Of course it is generally true, but if it is a diesel engine equipped with a sequential supercharging system, some adjustments to the airflow are still required in some special cases, but they do not need to be as precise as those made by you in steam turbines..."

"..."

While the two people were discussing the issue, Yan Zhongcheng had already stood on the podium.

The conference room, which had been a little noisy just now, became quiet again.

"I just listened to Mr. Wen Xueyou's introduction, and it was very beneficial to me..."

After a brief opening speech, Yan Zhongcheng directly praised Wen Xueyou.

However, in the latter's view, this flattery seemed to have a bit of sarcasm, or even gloating.

This made him frown.

The inner uneasiness became more and more intense.

"Compared to the GT25000, which is already very mature and has even been installed on a ship for sea trials, our QC300 should be considered a new face for our colleagues in charge of power system research and development."

Yan Zhongcheng's tone was slightly smiling at first, but he immediately changed the subject:

"However, judging from the performance indicators alone, the comrades in the navy may find it somewhat familiar..."

As he spoke, he turned to the second page of the PPT.

The first thing that comes up is a fairly detailed performance data table.

The content was naturally what Chang Haonan had said before.

QC300 has not yet officially entered the research and development stage, so it is naturally impossible to have detailed content such as the power-speed curve.

However, given the current situation, it is sufficient.

Almost at the same time as the form was released, several exclamations were heard in the conference hall.

It's not because of basic data like power and efficiency -

Although these data are equally dazzling, Chang Haonan had already made a promise when he founded the Aviation Power Group.

This is the part that everyone has been mentally prepared for.

The key is the characteristics of this model.

Size, weight, box-type design, and partial modularity.

Even a layman can see at a glance that the QC300 and the core machine are structurally very different from the TF39 and have no technical lineage connection.

But in terms of installation, use and maintenance, the shadow of LM2500 can indeed be seen.

This is also the advice given by Chang Haonan a few days ago——

For the Chinese Navy, LM2500 is the undisputed white moonlight as a ship power source.

If the acquisition channels had not been locked, there would most likely be no GT25000.

Although QC300 is not LM2500, it can compete with it in all aspects and even surpasses the LM2500+ that has just been installed on the ship in key indicators.

Even from an emotional perspective, it has enough destructive power.

After deliberately pausing for a while, Yan Zhongcheng continued to use his ultimate move:

"Comrades, you should know that the WS-10, which I was in charge of designing, has been installed on the J-10A and J-11B models and has officially passed the production finalization at the beginning of the year. It took less than five years from the start of the project. Therefore, there is actually no need to worry too much about the R&D cycle of the QC300..."

"At present, the first two Type 052C destroyers are close to being launched, but as far as I know, there is no clear plan for the construction of subsequent ships. Judging from the schedule, the QC300 is fully capable of catching up with the progress of subsequent ships and even subsequent models..."

For the navy, this sentence is absolutely lethal.

The speed with which China's aviation equipment has been innovated in recent years has been witnessed by everyone.

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 rather, it was stimulated by it.

Now that Yan Zhongcheng has spoken out directly, he has naturally gained a lot of recognition.

As for some minor details in this passage, such as "WS-10 is under the overall charge of Institute 606", few people care about them.

Jacky Wen was sitting in the audience and adjusted his posture awkwardly.

He knew that if he only judged from the current situation, the opponent could only have some advantages on the field at most.

Just relying on mobilizing emotions and playing the emotional card may win you temporarily but not forever.

After all, when it comes to the final selection, everyone has to come up with a detailed technical plan.

But the words Yan Zhongcheng had just written in his notebook made him unable to put his mind at ease.

Thinking of this, Wen Xueyou moved his gaze away from the curtain in front of him and turned to the seat where Yan Zhongcheng had just sat.

The notebook was quietly placed on the small table next to it.

At the same time, Yan Zhongcheng's introduction happened to come to this part.

"In fact, after the QC130 was finalized, we also learned a lot of lessons from it..."

He certainly couldn't say that he had just met Chang Haonan a few days ago for some last-minute help, so he had to attribute the source of this technical idea to the reflection on QC130.

However, this explanation is almost flawless, and people who don’t know the inside story cannot find out what’s wrong.

"This includes what Mr. Wen just mentioned, that ship-based gas turbines need to operate at a speed far below the design point for a long time, so special attention needs to be paid to the actual performance under low operating conditions..."

Hearing this, Wen Xueyou’s heart suddenly tightened.

He knew that this was the point.

"In order to fundamentally solve this problem, we plan to use multi-stage adjustable stator blade matching technology on the QC300 high-pressure compressor to ensure its stability and high performance under all operating conditions. The basic principle is to select different stator blade attack angles and blade tip clearances according to the intake flow characteristics of the compressor at different speeds..."

"..."

With the sound of "click".

The pen in Wen Xueyou's hand fell.

He has now figured out that the "xxxx" that he couldn't understand before is actually the four words "adjustable stator blades".

Obviously, I had greatly overestimated the negative impact that my lack of experience would have on the other party.

In other words, they greatly underestimated the other party's ability to correct themselves.

As for the imperfections on QC130, others have already started making adjustments before the 054's sea trials have even begun.

It can almost be said that the celebration banquet and the reflection and summary meeting were held together.

Such efficiency and execution...

A sense of crisis suddenly came over me.

"What a formidable opponent..."

He bent down to pick up the pen, thinking silently at the same time.