The Military-industrial Scientific Research System of the Academic Master Chapter 1072

Chapter 1072 Strange fan design

When he was reborn many years ago, Chang Haonan would deliberately name some projects the same as in his previous life.

But as his influence on the timeline becomes more and more obvious, many models with similar positioning have completely taken a new path in technology.

In this case, inconsistent naming will become more and more common.

Therefore, Chang Haonan has no objection to the name AE1500, which is easy to understand and consistent with international practice.

Since Lan Xinzhi even came up with the name on his own initiative, he has obviously approved the plan.

After all, he actually had no other choice.

“Is there any additional process required?”

Chang Haonan asked bluntly.

“Well...the detailed steps are actually quite troublesome.”

Lan Xinzhi scratched his head in confusion.

Such projects cannot be included in the support list casually because they involve financial support.

But by inserting the turbofan 20, Chang Haonan was not taking advantage, but actually helping, just like when the Equipment Industry Department was established a few years ago.

If you still let people run the process in person, it would be a bit too impersonal.

“How about this? When the project is approved, a representative from our office can participate, and you can leave all matters related to the construction of key projects to him?”

He had no choice but to suggest tentatively.

“That's not necessary.”

Chang Haonan waved his hand:

“After all, the Aerospace Power Group is still under the business guidance of the Bureau of Science and Industry. It is not convenient for outsiders to be assigned to the project, and we are not short of one or two administrative personnel.”

Lan Xinzhi was right. Rather than making up these vain ideas, it would be better to come up with more practical ideas...

“Consultant Chang, what else does the entire project require?”

After finishing speaking, he quickly added:

"Of course, I mean that in addition to the regular funding level, such as land use approval, or other aspects that require cooperation from other industries, as long as it is within the scope of capabilities, full cooperation will be given... It is best to see that within five years, Some achievements with clear stage significance..."

Five years.

The meaning of this timetable is already very clear.

China's institutional adjustments will not be limited to the 2003 wave.

Lan Xinzhi obviously hopes to produce some convincing results before the next time.

But it is impossible to directly put pressure on Chang Haonan.

So I had to express my position in a roundabout way.

However, after all, he has been in charge of the Equipment Industry Department for too long, and his knowledge of the military industry has been refreshed a bit slowly.

Especially after the Turbofan 10 was finalized, although China has not launched the development of a new aircraft engine model, it has accumulated a lot of experience through two international cooperation projects, the M88/SeA650 and the Trent 900.

With these accumulations, even civil aviation products are far more complex in testing and certification than military products.

But five years is still relatively loose.

After all, Rolls-Royce's Trent 900, despite several revisions to the design, took five years from project proposal to planned first flight.

The rival engine alliance's GP7200 plans to make its first flight in three and a half years.

No matter what, the technical difficulty of Turbofan 20 is much lower than that of these two models.

“This model is ready for everything, all it needs is the east wind.”

Chang Haonan smiled and replied:

“As long as the planned funds are available, there will definitely be no problem with the research and development cycle.”

“As for your additional support... I'll just make a note of it for now and save it for when I need it in the future...”

Chang Haonan returned to the capital originally to wait for news about the reorganization of the Science and Technology Commission.

Now that the boots have landed, even though what he was worried about has not happened, such a big move still kept the entire aerospace power group busy for a while.

Therefore, it was not until a week later that the specific division plan of the various departments of the Industrial and Construction Commission came out that Chang Haonan was finally able to return to Haojing.

Also saw two men sent back by Ren Bingda.

“The model cannot be disclosed directly, but can you provide us with the necessary design parameters?”

At the briefing meeting, even Chang Haonan was a little nervous after hearing this statement.

“That's right.”

Jin Xu, who was introducing the situation on the stage, quickly explained:

“So Mr. Ren's speculation is that this is most likely a military model, and the reason why the design parameters can be provided is that the other party took advantage of certain loopholes in their contract.”

Chang Haonan was originally prepared to accept Luo Luo's cooperation proposal, but now he is even more interested:

“For military models, do you need to introduce a permanent magnet power generation system?”

There are not many military aircraft engine models under development in the world, and some that obviously do not meet the requirements are screened out...

The answer is readily apparent. "Then what's there to guess...isn't it F136...or F135?"

Chang Haonan immediately sat up straight. .

“Hmm...we also speculated this way at first, but after getting the data, we are not sure..."

Jin Xu clicked the mouse as he spoke.

The PPT then switches to the next page:

“They gave some data related to the fan, but to be honest...it doesn't look like a typical military aircraft engine...”

On the curtain, a design drawing is displayed. .

It is said to be related to the fan, but in fact, only the parameters of the blade part are relatively complete.

Of course, if you just use a new non-contact magnetic bearing on the first pivot point like SeA650, then you don't actually need more parameters.

Soon, Chang Haonan understood why the other party said it didn't look like a military aircraft engine...

"This size...if converted, wouldn't the diameter be about one meter and three meters?"

An engineer raised his head after doing some simple calculations on paper, showing a rather shocked expression:

“What on earth do they want to create?”

You should know that most military aviation engines do not use particularly exaggerated bypass ratios in order to ensure high-speed performance.

Under normal circumstances, the diameter of a high-thrust aircraft engine used in fighter jets is only about 1.1 meters, while the diameter of a medium-thrust engine is reduced to about 0.9 meters.

What is the concept of this 1.3-meter diameter on an aircraft engine of normal proportions?

The NK32 on the bomber in Figure 160 is only about 1.45 meters.

This size is generally designed for supersonic strategic bombers with a thrust of 20 tons or more.

But this is the 21st century, how can anyone still choose this technical route?

However, for Chang Haonan, this is not a problem.

F135/136 did choose a larger fan size in order to meet the thrust requirements of the F35 "single-engine heavy-duty aircraft" and also perform vertical take-off and landing.

If he remembered correctly, it should be 1.27 meters.

Including the structure surrounding the receiver, it is indeed around 1.3 meters.

On the contrary, it further verified the guess just now.

What really concerned him was the shape of the blade.

Chang Haonan certainly had no contact with the detailed design parameters of the F135 or F136 in his previous life, but when the F35B takes off vertically, you can directly see the lift fan.

Even with the naked eye, he could tell that the blade in front of him was completely different from what he had seen in his previous life.

At the same time, Zhang Zhenhua, who was sitting next to him, also noticed something was wrong.

But not the shape.

“Mr. Chang, are the British blades... a little too light?”

He leaned into Chang Haonan's ear and asked in a low voice:

“Although I am just estimating, according to its size, unless it is completely hollowed out and the wall thickness is designed to be very thin, even if it is made of titanium alloy, it is impossible to achieve this weight, right?”

For a time, the entire conference room fell into silence.

“Perhaps the British gave us false data to begin with?”

Soon, someone gave a non-technical guess:

“According to my experience, they were not so easy to talk to in the past. They dared to come up with design parameters before seeing any benefits.”

This view has gained a lot of recognition.

Haofei Group has had a cooperative relationship with Rolls-Royce as early as the late 1980s. It can be said that they are the group of people in the country who best understand the virtues of the British.

As long as something happens, it is most likely correct to think of the worst.

However, there are also different opinions:

“At Luoluo's level, even if it is fake data, it cannot have such obvious loopholes, right?”

“And they don't have to.”

Zhang Zhenhua added:

"If you want us to agree with the conclusion of the investigation report, you must sign the contract. They will provide the real data sooner or later. If you think it is risky to take it out in advance, you can wait until the contract is signed. There is no need to do this. A low-level fake plan came out..."

Everyone was coming and going, and their guesses were getting more and more outrageous.

In the end, naturally, there was no one, two, or three.

Having no choice but to turn his attention back to Chang Haonan, who was sitting in the first place.

But the latter was a little undecided at this time, so he had to give a compromise plan:

“No matter what, let's simulate the performance of this blade first…”

(End of this chapter)

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