Chapter 1219 Strange Compressor and Strange Data

When the translator conveyed Ren Bingda's answer to Bodi, the latter even looked confused for a moment.

Then he turned his head and glanced at Ren Bingda next to him.

I found that the other party looked normal and didn't seem to be joking.

"Yourselves?"

He tentatively confirmed again.

"That's right."

Ren Bingda showed a natural expression:

"Since it is an industry standard proposed by China, then as a Chinese enterprise, we should naturally take the lead in setting an example."

This time, Bodie didn't respond immediately. He just picked up the water glass and pretended to drink water with his eyelids lowered.

But even from Ren Bingda's perspective, it can be seen that the water level in the cup has not changed for a long time.

Obviously taking the opportunity to think about countermeasures.

This is actually the case.

As a technician-turned-supervisor, Bodi almost instinctively began to think about whether the Chinese people were serious about whether it would be possible to achieve it by simply modifying existing models, or at least achieve what the other party wanted on paper. Require.

The energy consumption and emission tests of aviation engines are the same as those of automobiles, and there are many specially developed "test-taking" techniques.

It’s impossible for anyone to follow a flying plane to check its emissions anyway, so as long as it can pass the testing process, everything will be fine.

But this is like a final exam in college. The paper score cannot be too far from the passing line.

Otherwise, even if the teacher intends to save it, he may not be able to get it back.

After some thinking, Bodi came to the conclusion that——

It's hard.

The Trent 900 is already one of the models with the lowest unit emissions and fuel consumption in the aviation industry, and even met the data specified in the CAEP6 standard three years in advance.

Including the NGME project he is currently responsible for, it is also designed around the requirements of CAEP6.

There are only three ways to further improve efficiency and reduce emissions.

The first is to work hard to continue to increase the temperature in front of the turbine, reduce fuel consumption per unit of thrust, and suppress the generation of thermal nitrogen oxides.

The second is to improve the combustion chamber structure to fully premix fuel and air as much as possible to improve the adequacy of combustion and reduce the generation of rapid nitrogen oxides.

The third is to directly change the fuel, such as burning aviation kerosene to burning methane or hydrogen, to solve all problems in principle.

But either way, it's easier said than done.

At least they need to start from scratch and design a new core aircraft engine.

It is not an effect that can be achieved by tinkering with existing models.

After thinking about this, Bodi relaxed.

He naturally knows that the Chinese people do have some special skills in the field of aircraft engine design and manufacturing, otherwise the two parties would not have a series of cooperation that continues to this day.

But a unique skill is a unique skill.

The above three items are all the ultimate test of the basic skills of aviation engine design.

Taking the combustion chamber structure as an example, Rolls-Royce used a three-ring cavity structure and a total of 90 fuel premixing nozzles of different sizes on the new generation product based on the plan of GE next door, and controlled combustion through a 12-way fuel control valve. , the combustion mode in the combustion chamber is accurately adjusted under different power conditions, and a newly designed split-tube combustion chamber structure is adopted to provide sufficient combustion space for premixed combustion.

Although Bodi has not seen the specific structures of China's several self-developed aviation engines, considering that at the turn of the century they also introduced and produced PS90A and D436, two aviation engines with technical levels in the early to mid-1990s, it is difficult to believe them. It took just five or six years to achieve a lead at the basic level.

This is not to mention the difficulties at the production level.

Although Rolls-Royce's technical department has not yet figured out how the air film holes of the Trent 900 turbine blades are processed, it is certain that China still does not have the ability to produce the blade bodies.

In short, like many of their other industries, it obviously bears traces of very uneven development.

Of course, considering the past experience of Panos Watson being hit by a boomerang, Bodi was not prepared to say anything to death.

Instead, he decided to wait and see.

"All right……"

He put the still almost full glass back on the table:

"While I still think this option is a bit too radical, I wish you all the best, and we are willing to provide partners with it if needed..."

Ren Bingda could tell that he was no longer prepared to continue to dwell on this topic.

Obviously after a round of analysis, Bodi did not think that he could really come up with products that met the new standards.

In fact, to a certain extent, the latter speculation is indeed correct.

Since the domestically produced turbofan 20 is intended for military use, some standards have been relaxed in terms of emissions and fuel economy.

If the AE1500 wants to achieve its goal of being put into the market before 2010, it will need help and cooperation from Rolls-Royce.

This is why Chang always sets such a high standard of reception for Bodi.

However, the cooperation methods of some previous models such as M88, Sea650, Trent 900... are all different.

This time, everything from model to technology needs to be focused on China.

Therefore, Ren Bingda had already prepared the draft.

He was not in a hurry to argue with Bodie, but continued to talk about some innocuous topics.

Then, while both parties were silent, the conversation suddenly changed:

"Mr. Bodi, I think you have almost rested. According to the principle of reciprocity, there is another trip to visit our R&D center..."

The so-called principle of reciprocity refers to the fact that when Ren Bingda went on a business trip to Luoluo, the latter also opened part of its research and development area to him.

Now that we are reciprocating the courtesy, we naturally have to express our return.

Bodi didn't make any movement on his face, he just subconsciously raised his eyebrows.

On the itinerary provided by China in advance, there is indeed an item of "visiting the production and R&D center".

But because they were written together, he thought he had finished visiting the factory area.

I didn’t expect that there would be a separate program later.

…

The development process of aero engines involves many factors. The entire industry chain includes hundreds of midstream and upstream suppliers and cooperative units, and the departments involved in R&D work are even more numerous.

The so-called "R&D center" that Ren Bingda took Bodi to visit was actually a testing workshop.

It is also relatively easy to reflect product performance without being too sensitive.

The group of people left the conference room, put on their work clothes outside, and soon arrived at a three-story building next door.

A dozen similarly dressed technicians were gathered around a hanger-type equipment, seemingly performing performance tests on engine components of a certain model.

It's just that the distance is too far and I can't see clearly what it is.

There is a row of railings behind the operating table, and a yellow and black warning sign hangs on it.

Bodi couldn't read Chinese, but it was easy to guess from the huge exclamation marks and symbols that it probably meant things like please stay away and pay attention to hot surfaces.

Ren Bingda stopped, turned around and introduced to the British delegation behind him:

"Gentlemen, our technicians are testing the cycle performance of the new high-bypass ratio turbofan engine. You can visit the blue ground area at will without disturbing their work..."

After hearing this, Bodi saw that what was hanging on the hanger should be a set of blades for a high-pressure compressor.

However, the appearance is different from any other common similar products.

He originally thought that this trip was just a routine matter, but now he became interested instantly.

The entire test workshop is very large, with almost twenty groups of workstations, but perhaps because it is already off-duty time, or perhaps specifically to welcome visitors, less than half of them are in a working state.

And only about one-third of them have staff operating or observing.

Although these workbenches are also outside the blue zone where they can move freely, they are not as strictly guarded as the components under test themselves.

At least it's not difficult to see what's displayed on the screen when you walk by.

After realizing this, Bodi immediately expressed that he wanted to take a look, and then walked around the workshop pretending to be casual.

We didn’t stop anywhere intentionally during the whole journey, and we even asked the accompanying staff some innocuous questions from time to time.

But his eyes kept glancing at the screens on both sides.

Hard work pays off.

On a computer deep in the workshop, he actually saw a page that he was very familiar with——

That is an online gas composition detection software from the Swiss company Rodronik.

The same equipment was used to detect exhaust emissions during ground tests and flight tests of the Trent 900.

So Bodi recognized it with just a glance.

It is obvious that Chinese people are indeed paying attention to aviation emission reduction technology.

I just don’t know the specific progress.

The software is running at this time, and it looks like the operator started the data processing program and then freed his hands to do other things.

Only then did Bodi seize the opportunity.

Sure enough, the man following him turned pale, and then gestured to the other engineer.

The latter understood immediately, quickly walked to the computer in three steps and switched the software window to the minimized state.

This set of actions went smoothly, but Bodi still recorded the voltage data corresponding to the RS325 and HC402 probes.

Rolls-Royce is also using the same probe and analysis program. As long as it is calibrated using nitrogen data, it can roughly calculate the gas concentration corresponding to the specific voltage.

Of course, there will be slight differences in composition between the air in the UK and the air in China, but it will not have a significant impact on the results.

After getting this unexpected surprise, Bodi was also worried that he would forget the two sets of numbers later, so the entire subsequent process was a little absent-minded.

In the end, he even excused himself from feeling unwell and offered to end today’s trip early...