Chengdu, 611.

Chen Nian, who gave the information, can be regarded as letting go of a big stone in his heart, and that feeling of uneasiness is gone, which also shows that he has indeed solved a potential risk.

It was only then that he had free time to inspect the system interface for the first time.

Sure enough, as he expected, this time he launched a two-pole counter-rotating lift fan, which also brought him a source point increase.

Moreover, the number of increases reached a staggering 2.3 points.

Now, the number of source points he has reached 4.98.

Judging from the situation in the past two days, the number of daily average source point growth is also increasing.

According to his speculation, in the future, the number of his source points in the J-20 project team will increase significantly.

Of course, the premise is that he continues to learn at the current pace and output results independently.

But that's another story.

As for now, after the number of source points reaches above the safety line, he should think about how to spend the source points at hand.

According to the progress of each project displayed on the "Task Manager", whether it is the Deep Blue 16 project or the high-speed rail project, they are all in the stage of digesting the early results at this time, and it is unrealistic to let them continue to accept new technologies.

Because, both projects have almost reached their limits, both in terms of infrastructure and personnel preparation.

Even if Chen Nian comes up with technology now, it is difficult to actively promote the progress of the project.

Therefore, the strategy of investing the source in these two projects was first abandoned by Chen Nian.

Then, if he does not use these two projects, his best choice is to continue to strengthen the J-20B project.

Didn't you say that the STOVL fighter didn't?

Doesn't it mean that it can only play with the wind, and can only bully and bully small countries that have been crushed?

Then give it a solution!

Judging by the situation of the F-35B in its previous life, its main drawbacks are nothing more than several:

The flight range is short, the bomb load is small, and the structure is complex.

Among them, the core is the problem of short range.

The reason for this problem is mainly that in the take-off and landing stage of the aircraft, the engine running at full power will consume a lot of fuel, resulting in even if the aircraft is fully fueled, the actual amount of fuel available after going to the sky is only one-third.

There are only two ways to solve this problem.

First, expand the capacity of the fuel tank.

This is the simplest and most crude approach, but there are many different ways to implement it.

For example, conformal fuel tank, vertical tail fuel tank, spinning ceramic thin-walled fuel tank technology. And so on and so forth.

These options can be used individually or in combination, but either one requires a trade-off between the overall performance of the aircraft.

If in the case of the pursuit of extreme combat effectiveness, the first path is not the best choice.

The second way, then, is relatively much more advanced.

That is, variable-cycle engines.

The so-called variable-cycle engine is a multi-design point engine.

By changing the geometry, size, or position of some components, it is possible to adjust their thermal cycling parameters such as boost ratio, turbine inlet temperature, air flow and bypass ratio, to name a few.

The engine cycle mode is then changed to ensure that the engine works optimally in all flight conditions.

To explain in the most intuitive language, a traditional turbofan engine must be designed to make a trade-off between high thrust and high efficiency, not both, nor can it be switched at any time, but a variable-cycle engine can.

In this way, the engine can actively adapt to various operating conditions as needed to maximize fuel efficiency.

According to the information that Chen Nian had in his previous life, the fuel efficiency of some models of advanced variable-cycle engines can even reach more than twice that of ordinary engines.

That is, the same tank of oil, if it can fly 1000 km with a turbofan engine, then with a variable-cycle engine it is possible to fly up to 2000 km, or even more.

Therefore, solving the problem of variable cycle engine is equivalent to solving the problem of insufficient range of more than half of STOVL aircraft.

Thinking of this, Chen Nian nodded with satisfaction.

He silently opened the system interface in his mind, and then entered the analysis, silently reciting a term in his heart.

【XA-100 Adaptive Variable Cycle Engine】

After a short pause, the system immediately gives the requirement for parsing.

【XA-100】

[Parse source point requirements: 2.4]

Seeing this number, Chen Nian was disappointed at first, and then sighed with relief.

At first, he had some expectations, thinking that after mastering the technology of the F119 engine, the variable cycle engine technology would be able to significantly reduce the price.

It's best to reduce it to within 1 source point, so that he won't feel distressed when he buys it.

But apparently, it wasn't as simple as he thought.

Although the core principle of the variable cycle engine is to adjust the size and caliber of the three ducts, it is necessary to do this under the conditions of extreme high temperature, high pressure and high speed, and to ensure the stability of the engine structure, and its requirements for materials and processes are still improved compared with F119.

In this way, the price given by the system of 2.4 points is actually discounted

Chen Nian hesitated for a moment, and finally made up his mind.

A thought quickly flashed through his mind:

"Let's start parsing!"

Subsequently, the source point was deducted, and a large amount of information poured into his mind, and began to merge with the original F119-related information at a rapid speed.

In just 10 minutes, Chen Nian had already received all the information.

At this moment, he truly mastered the most advanced aviation technology at this point in time.

Even the United States at this time could not be compared with him.

Chen Nian let out a long breath, he knew that mastering theory and technology did not mean that it was so easy to make things, but at least, he had taken an important step in the "solution" part.

The rest is just going to take some time.—

However, now that the problem with the engine has been solved, and the budget has been overspent, why not just spend a little more and piggyback on other small problems?

This kind of thought is like shopping in the mall, I was going to buy a bed sheet, but I thought it didn't look good, so I simply bought a four-piece suit.

Now that the four-piece set has been bought, the pillow has to be changed to a comfortable one.

The pillows have been changed, and the mattress has simply been changed and pulled down.

The mattress was changed, the bed had to be changed, and the bedroom was smaller, so the villa had to be changed

And now, Chen Nian is the other way around.

The variable-cycle engine has been bought, and the conformal fuel tank must also be repaired, right?

It's not enough to have a conformal fuel tank, but also to have ceramic thin-walled technology.

Both things are available, and the lightweight materials are also arranged, and the structural materials cannot be sloppy.

Also, didn't it say that the bomb load was insufficient? Isn't it enough to increase the power of a single-shot missile?

Parse, parse!

PL-15 is what kind of stinky fish and rotten shrimp, give it to the master PL-17!

After one operation, Chen Nian's nearly 5 source points saved during this period of time were clean, and it was not even enough.

In desperation, he had to postpone the analysis of the conformal fuel tank, saving 0.2 source points for the PL-17.

Looking at the dazzling source number of "0.05", Chen Nian regretted and was relieved.

Damn, I'm spending impulsively again.

However, this time the impulse consumption is at least worth it.

On the other hand, the core members of the J-20 project team were at the regular working meeting.

Yang Wei looked at the latest materials submitted, and his expression was a little solemn.

He looked around in silence for a week, and then spoke:

"Now the outside world is very skeptical of us, especially after the US side publicly announced that it would abandon the F-35B project, and many people doubt whether it is necessary for us to engage in STOVL fighters at this stage."

"Among them are some of the leaders who can influence our projects."

"They are all experienced specialists, and some of them even serve in the Army and Air Force."

"From their point of view, an aircraft with a combat radius of less than 300 kilometers is really a bit of a chicken rib."

"Especially when our territorial waters are very large, such a range is really not enough."

"So, today, the superiors launched an inquiry about our project."

"The subject of the inquiry is whether this aircraft can be built, when it can be built, and whether it can exert its combat effectiveness."

"I think it's hard for me to answer this question, not just me, but everyone in this room."

"Because frankly, we don't know."

"In a word, no one knows whether an aircraft will work or not without actual combat testing."

"So, I'd like to hear from you."

"No matter what kind of opinion you have, you can put forward it, even if you say that you want to turn around now, stop doing STOVL, and focus on the optimization of J-20A, it's okay."

"Because, we're still in time."

After he finished speaking, the entire conference room fell silent.

No one spoke, but it was not because they were afraid to be the first bird, but because they were also confused at the moment.

At the beginning of the additional launch of the J-20B branch project on the J-20 project, in fact, everyone voted for it, and almost everyone voted in favor.

The reason is very complicated, in addition to benchmarking the F-35 project, which had already obtained some information at that time, and trying to gain an important advantage in the stalemate stage strategically, there is another reason that everyone knows, but it is not convenient to say.

That's the pride of being a aircraft designer.

Everyone wants to make something new, and they all want to make a "Killer product", completely throw off the Loma who has been riding on their heads, and then chase after the 601 Institute that has already made the J-22.

Essentially, there is nothing wrong with this thinking.

After all, scientific research is a process of exploration and a process of trial and error.

STOVL, not only for the aircraft itself, but also for the accumulation of technology born in it, will also provide a lot of help for future research and development work.

——

That's what they originally thought.

But for now. They seem to suddenly realize that maybe this idea of their own is not so right?

Even the Americans don't do it anymore, and we continue to do it, does it really make sense?

For a while, sighs rang out in the conference room.

After a long time, someone spoke:

"My advice is that the project has come to this point, and a breakthrough has been made, and it should be done."

"After all, if you withdraw at this time, all the resources invested in the early stage will be wasted."

"But does it really pay off?"

Before he could finish his sentence, someone interrupted him directly.

"The result I am talking about is not whether the plane can be built, but whether it will be useful after it is built?"

"A combat radius of 300 km . In fact, in the case of a real full fuel and full bomb, it may not even reach two hundred kilometers. ”

"To really make a difference, you have to rely on tankers"

"You can take off taxiing and land vertically."

"Then the significance of this plane will be lost by at least 80%!"

"So what can be done? Do you really give up? Are you willing? ”

"I'm not reconciled. But I want to be sure one more thing, are the Americans really serious? ”

"Are they really not doing F-35Bs anymore?"

Hearing his words, Yang Wei shook his head lightly and replied:

"This information has not yet been 100% confirmed, but judging from all aspects of information, it is still relatively likely."

"Of course, we can't rule out that they deliberately released false information to lure us to follow up."

"But in any case, I think we shouldn't be influenced by them – we should be realistic, and have the final say in our own affairs!"

If Yang Wei's sentence is placed on other occasions, it must be extremely inspiring.

But unfortunately, everyone was in a bad mood at this time, so there were few responses to him.

After another long silence, the sound of speech resounded in the corner of the room.

"I don't think it's wrong to be realistic."

"We should not only look at the problem itself, but also take a long-term view and look at it extensively."

"For example, the question of whether the STOVL fighter is useful or not, in fact, the core is the range, so do we have a way to solve the problem of range?"

"The answer is yes."

"The optimization of the engine, fuel tank, and aerodynamic layout can all lead to an increase in range."

"Shouldn't we think about how to solve these problems?"

"But isn't the problem that can't be solved?"

Another voice interrupted him, and asked in a gloomy tone:

"How do you do a variable-cycle engine? Pneumatic layout optimization has reached the limit, how can it be optimized? Fuel tank. Unless there is new material, there is no need to discuss it at all. ”

"In a short period of time, we simply won't be able to solve these problems."

"My advice is to stop in time and reduce the loss."

As soon as these words were spoken, everyone who was still thinking about it all looked at Yang Wei, as if they were waiting for him to make a final decision.

Looking at their gaze, Yang Wei gritted his teeth and said:

"Today is just a discussion and no decision will be made."

"Still. Now that we've discussed it all at this point, let's just spread it out. ”

"Xiao Zhang, you go and call Chen Nian over and ask his opinion."

"Okay, Mr. Yang."

The assistant turned around and left the conference room, Yang Wei looked at his back expectantly, and his expression gradually became calm.

If this path is really wrong, then let him decide life and death.

The young man. He is a ruthless man who can open up a new path on his own.

If even he can't say no, forget it.

But, would he say that?

I don't think I've ever heard the word "no" from his mouth

A few minutes later, Chen Nian walked into the conference room.

And his words made everyone stunned in place.

"I've got the situation."

"Isn't it a variable-cycle engine? Oh, the core technical principle is here, do you want to see? ”

"I also have conformal fuel tanks, spin-molded ceramic thin-walled fuel tanks, new over-the-horizon air-to-air missiles PL-17, lightweight structural connection materials, and lightweight titanium-aluminum alloy TC4-2 materials. technical documentation. ”

"Together, these things should be enough for us to continue this project, right?"

(End of chapter)