Chapter 1020 It Was Obviously Me Who Came First

Liu Yongquan's addition made both Vista and Elinor stunned at the same time.

The former was trying to show off but failed to show off, and was simply a little embarrassed about being slapped in the face——

Replacing the rotor bearings with non-contact magnetic bearings can indeed increase the effective work, but this part of the effective work cannot be directly converted into thrust.

Generating electricity is pretty much the only option.

Of course, if I have to say it, with this part of power, the power calibration of the genuine motor can be reduced, which can indeed squeeze out more potential for increasing thrust.

But it's not like what he just explained.

Fortunately, at the moment, no one pays attention to this little detail.

Because the latter had no idea that the question he asked casually as a foreshadowing would lead to such a big and cruel thing.

Magnetic bearings are nothing new for Elinor, who is British.

This thing was first researched by Newcastle University.

The actual product is also the first to be put on the market by S2M, a subsidiary of the British Edwards Group.

Even the technical route of combining magnetic bearings and permanent magnet fault-tolerant motors to build a permanent magnet fault-tolerant power generation system based on H-bridge was first promoted by Lockheed Martin in the JSF project, but the concept itself It was proposed by British Aerospace Corporation, one of the predecessors of BAE Systems.

But what happened?

Why did the French suddenly use it?

Whether it’s a product or a concept, I obviously came first, right?

You know, the biggest difficulty with this technology is not actually the hardware, but that magnetic bearings are a brand-new product and no one knows how to calibrate them——

Although this thing can basically be considered to have no friction, if you want to use it to generate electricity, the act of cutting the magnetic coil itself will generate resistance.

In fact, in the earliest design concepts, this resistance was even used as a tool to efficiently regulate engine speed.

Truly killing several birds with one stone.

However, the problem is that once there is a problem with the electromagnetic control, it will affect the whole body.

Specifically, fluctuations in power consumption may lead to fluctuations in power generation, which may further lead to resistance fluctuations, which may further lead to speed fluctuations, which may then lead to rotational stalls. The final development is surge...

In short, the permanent magnet fault-tolerant power generation system requires an optimal current control method to achieve fault-tolerant control.

But it becomes a huge problem to make the control strategy effective in a quite wide operating range.

The installation and application of the entire set of technologies happens to be stuck here.

Even according to the most optimistic expectations of Lockheed Martin and Pratt & Whitney, JSF will not be able to solve the reliability problem of the permanent magnet fault-tolerant power generation system and install it until 2008.

In fact, few people who know the inside story believe this timetable.

result.

in Geneva.

In this business aviation show that seems to have no bright spots, someone actually came up with a solution?

"Professor Elinor, the brochure in your hand was modified based on the maintenance manual we previously modified. The content is actually not very comprehensive..."

As if sensing the other party's doubts, Liu Yongquan took out another slightly thinner booklet with a different cover from nowhere:

"This is the second version that has just been revised. It has deleted some operational details that are of little significance to non-maintenance personnel, and added descriptions of several key new technologies on our products... Although it is not very detailed, it is I think it’s enough.”

Elinor's mind still hadn't fully recovered at this time, so he took it in his hand somewhat numbly, and then opened it.

"About page ten is about the magnetic bearings and permanent magnet fault-tolerant power generation system..."

Liu Yongquan reminded thoughtfully.

Sure enough, a few pictures and schematics were used to explain the performance of this set of things and its advantages over traditional solutions in just a few words.

It is also specifically noted that in order to ensure reliability, SeA650 is equipped with a mechanical backup at the first support point.

Once the magnetic bearing fails, the rotor bearing, which was originally in a non-contact state, will enter work.

Of course, this is certainly not normal.

But the emergency mode can also ensure that the aircraft engine runs at a lower speed for at least two hours.

In short, from a performance perspective, there are no flaws at all.

but……

As for promotional materials, that’s all the content is.

It's impossible for people to write down the specific design and calibration for you.

So Elinor read it over and over several times, but still felt a little unsatisfied.

But it was impossible for him to ask directly.

The expression on his face was twisted.

During this twisting process, Elinor suddenly realized that he seemed to have a fixed mindset just now.

Regarding content related to magnetic bearings, the Chinese people in front of me have always been communicating with myself.

Dr. Vesta on Snecma's side remained invisible throughout the entire process...

This seems to indicate that at least the technology of magnetic bearings should have a greater relationship with Chinese partners.

It is even possible that it was developed by the Chinese.

…

at the same time.

Seeing Elinor's performance, Liu Yongquan couldn't help but smile as if his plan had succeeded——

In fact, after he failed to answer the first question just now, he quickly observed a detail about Elinor.

Although the personal information written on the latter's badge was flawless, the ballpoint pen in his hand was the same style as the one in the pockets of the Rolls-Royce group just now.

So Liu Yongquan reasonably inferred that this Roger Eleanor actually came here on behalf of Rolls-Royce.

It's just a different strategy.

Or maybe he is the red face among the red and black faces.

However, Liu Yongquan did not reveal the other party's identity.

There is no need.

First of all, the question asked by the other party was not a particularly sensitive question.

After the Falcon Z is delivered to the user, which parts of which specific technologies you use are things that can be seen at a glance.

There is no possibility of confidentiality, nor is there any need for confidentiality.

Secondly... the French and the British have a bad relationship, what does it have to do with him, a Chinese?

Aviation Power Group and Snecma are partners, that's right.

But it's also with Rolls-Royce on the opposite side!

The Xiluo Group is still there.

So, he chose to take the initiative and directly point out the technology used.

And he gave Eleanor a copy of the brochure that had just been finalized, of which he had only brought a few copies, so that he could read it clearly.

As for the specific design method you want to know...

It's not impossible.

It just costs more money.

And it also requires more projects.

Of course, Rolls-Royce is an absolute leader in the design and manufacturing of aero engines, especially high bypass ratio aero engines. It may not be so easy to get them to agree to joint research and development.

Then, as a second choice, it is also OK to be a supplier of solutions or subsystems.

Not only can it make China's aero engine products famous by using the Rolls-Royce brand.

It can also gain some experience in the research and development of high bypass ratio aero engines.

More importantly, it can further deepen the closeness of China's ties with Europe in the field of aviation technology.

This is also one of the most effective means to fight embargoes and sanctions.

Moreover, the highlights in the brochure are far more than that...

Sure enough, after being convinced that he could not find any new useful information from it, Professor Eleanor continued to read the following content half reluctantly and half curiously.

Soon, his core question, where the strange 100℃ temperature rise came from, was answered.

"The SeA650 engine uses mature and reliable film cooling technology, combined with a newly developed three-dimensional channel structure and variable interface aperture, to increase the turbine front temperature by 93.7℃ without affecting the service life..."

"Note that since the internal structure of the three-dimensional channel is more complex than that of the traditional film hole, the mid-term maintenance must be carried out by a designated supplier..."

"..."

As usual, after a concise description, there are several photos and diagrams, as well as a series of test results.

There are not many details, but it can be seen that the cross-section of the film hole is dustpan-shaped, rather than the traditional circular, elliptical or fan-shaped.

This just fits the characteristics described by Norris and Dr. Lapworth before.

Of course, the specific design parameters must be different.

But the technical solution...

I'm afraid it's really the same.

"S..."

Professor Elino thinks he has good self-cultivation, but at this time he can't help but want to use a word starting with F or S to speak sweetly -

Come again?

Although he couldn't guarantee who was the first to research the air film hole, it was essentially the same as the magnetic bearing just now.

He made a lot of noise on the PPT.

In the end, it was realized quietly by others...

This matter is still a bit embarrassing...