Chapter 1066 must reflect the role of China!
Hearing this answer, Ren Bingda instantly understood.
At least he thought he was enlightened——
Six months ago, when he just took over the turbine blade OEM task from Rolls-Royce, he once told Chang Haonan at a meeting, Responsible for the production of Trent 900 engine turbine shafts and turbine accessories are Ishikawashima Harima Heavy Industries Co., Ltd. and Kawasaki Heavy Industries Co., Ltd.
Ren Bingda clearly remembers that Chang Haonan's expression after hearing this was very intriguing.
But he didn't think much about it at the time. He just thought that the other party was considering how to replace the share of Japanese companies in this link in the future.
But looking back now, I am afraid that I had anticipated that something would go wrong at that time!
Following this line of thought, everything is already connected.
After all, Chang Haonan was the first to discover the word-of-mouth crisis among Japanese companies, and it was caused by an accident during the testing of NH90.
And the plot of Trent 900 before us...
Isn't it exactly the same?
Considering that Chang Haonan had the foresight to emphasize to Rolls-Royce in writing last year the risk of over-rotation after a broken axle, the circumstances of this accident were completely consistent with it...
Reasonable .
Too reasonable.
"Then if Mr. Chang faces this situation, the next operation should be..."
Ren Bingda began to try to put himself in another person's shoes, trying to simulate what he should do next in Chang Haonan's "plan".
It wasn't until the subordinate next to him shouted twice that he woke up from his brainstorm.
"Mr. Ren, this is absolutely irrefutable evidence. As long as you take it out, you can almost directly determine the cause of the accident. Can we..."
Obviously, after being frustrated for several times, After a few days, the former couldn't wait to feel proud.
But Ren Bingda, who almost jumped up just now, calmed down instead.
"Don't worry."
He raised his hand to stop the other party:
"As the saying goes, if you see one cockroach in the house, there may actually be a thousand. You don't know. The ones found are hiding in the dark.”
“Although it can indeed explain a lot of problems, it cannot fully reflect the role we play, and such outrageous quality problems cannot be ignored. It is very likely that it will only appear on this small section of a few centimeters."
"You and Xiao Jin will be more busy in the next two days to remove the other parts of this short pipe and the entire lubricating oil part of the medium and high pressure turbine shaft. Find out and analyze them one by one to see how many obvious substandard problems there are.”
"Yes!"
The other party nodded immediately, but then turned curious:
"So Mr. Ren..."
"I am going to hold the first technical meeting the day after tomorrow. A report came out before and completely blocked the mouths of the British..."
Ren Bingda stood up again, adjusted his work clothes and said...
...
The time came very quickly two days later.
According to the schedule, the first technical meeting after the start of the simulation restoration will be held this afternoon.
Almost everyone came to the conference room early, waiting for Wilson to appear -
More than half a month had passed since the accident.
Public opinion's reaction was secondary, but Airbus, which had been being dragged along, was already a little unable to sit still.
Even the French cannot accept negotiations initiated by the other party, but there has been no progress in two weeks.
Moreover, rival Engine Alliance has also smelled something amiss and is stepping up its public relations with Airbus.
It’s hard to say what will happen if we continue to delay.
It can be said that the outcome of this accident restoration will be directly related to the future and destiny of the entire Trent 900 model.
The atmosphere in the conference room was so depressing that it made people feel breathless.
Panos Watson raised his hand and looked at his watch.
There are still twenty minutes left before the meeting officially starts.
"Have you contacted Wilson?"
He suppressed his irritability and tilted his head to ask Tim Purdy next to him.
"Contacted, the testing center reported that..."
Halfway through the latter's answer, he heard the sound of the conference room door being pushed open.
Everyone turned their heads in unison.
Wilson was standing at the door. He didn’t even have time to put his laptop into his bag, but held it in his hand with the lid open.
From the tired expression on his face, it was impossible to tell whether the result was good or bad.
"Since Joe has arrived, let's start early..."
Pody was also very anxious at this time. He quickly motioned for Wilson to sit on the left side of Watson, and then looked around subconsciously while preparing to make an announcement. The meeting officially begins.
But before the last word was spoken, he realized that there seemed to be someone missing in the venue.
The sudden stop of the sound naturally attracted the attention of others. "Body?"
Watson looked at him doubtfully.
“Director, the representatives from China haven’t arrived yet. According to our previous regulations, the meeting cannot officially start yet.”
“Where are they?”
“The person I contacted before At that time, it was said that it had already set off from the workshop, and now... it should still be on the way. "
As a century-old super-large enterprise, Rollo's headquarters is close to a small and medium-sized town, and it came from one area. Another area that tends to take a long time.
Watson had no choice but to take a deep breath and continue to wait patiently.
"Anyway, those three people have no practical effect, why don't we start first?"
Someone soon suggested.
But Watson still maintained his sanity after all.
For these 20 minutes to lay a foundation for the subsequent accident investigation, it is obviously not worth it.
Finally, five minutes before the meeting started, Ren Bingda strode into the conference room and found a place to sit slightly behind the conference table.
Almost at the same time, Bodi finally announced the start of the meeting.
“We have now completed the first stage of the accident simulation.”
Wilson didn’t even glance in Ren Bingda’s direction, opened the PPT, and started to introduce the current work progress directly:
“Thanks to the cooperation of Dr. Lea Lapworth, we used part of the last data returned by the test sensor to restore the entire interior of the turbine from the temperature abnormality to the blade being thrown out. ”
"It is completely certain that the root cause of the accident has nothing to do with the turbine. The medium-pressure and low-pressure turbine shafts were broken by external force about 2.5 seconds after the temperature abnormality occurred, which in turn led to the loss of fan load and the rotation speed in the next 1 second. Rising to twice the maximum allowable limit, the poor-strength titanium alloy low-pressure turbine disk was the first to be unable to withstand the centrifugal force and exploded. The broken piece then penetrated the casing and was thrown out of the engine, causing more serious secondary damage..."
I have to say that the British are really good at making PPT.
With Wilson's introduction, the 3D scenes projected on the screen are constantly changing. Even a non-professional melon-eater sitting here will most likely be able to understand everything.
"So... the blade was not even the first thing to break?"
Pody was a little surprised by this result.
After all, according to intuition, when the rotational speed gradually increases, it seems that the thin and fragile root part of the blade should be the first to have problems.
"At least...that's the restored situation."
Wilson replied while operating the computer to enlarge one of the pictures:
"With high-pressure and medium-pressure turbines Differently, the most vulnerable part of the low-pressure turbine structure is the turbine disk, and even the first thing that caused damage to the casing was a broken piece formed after the turbine disk shattered.”
At this point, someone finally paid attention. We arrived at Ren Bingda, who had been sitting in an inconspicuous place and had never spoken.
After all, these two parts are produced in China.
But the latter was lowering his head and recording something in his notebook, and seemed to have no intention of interrupting.
And Wilson quickly entered the next part.
“Our next plan is.”
As he said this, he turned and looked at the colleagues in front of him:
"Conduct at least three more sets of experiments to determine where this so-called 'external force impact' comes from, whether it is outside the casing, or from the high-pressure compressor and combustion chamber."
The atmosphere has just relaxed a little, It tightened up again in an instant——
There is no problem with the turbine, but it does not mean that there is no problem with the core machine.
After all, there are two other parts.
The problem Bodi thought of was more long-term:
"Three sets of experiments...are there enough materials?"
"That's the question."
Wilson replied:
"There is only enough material for one set at the moment, and the rest are We still need to wait for the new batch of turbine parts to be delivered.”
Podi’s hand holding the pen shook violently.
The entire conference room became quiet again.
Even if the delivery cycle is not considered, the three sets of experiments will have to wait at least another half month to be completed.
It’s too late anyway.
So, the order is crucial.
At this time, Ren Bingda finally spoke:
"The next batch of blades has been declared to customs and will be delivered in about a week. It will not affect the progress of the investigation."
A sudden sentence attracted all the attention.
Including Wilson.
"In addition, in fact, it may not necessarily be necessary to do as many experiments as three times."
Ren Bingda said, taking out a document that was estimated to be about fifty or sixty pages thick from the briefcase he carried with him. File:
"Our investigation team has found some very interesting evidence through comparisons in the past few days, so... it is recommended to start from outside the casing, strictly speaking, from outside the casing of the high and low pressure turbine shaft parts..."< br>
(End of this chapter)