Chapter 47 Active flutter control, success!

After passing the first phase of verification, Yi Yuanhe immediately organized manpower and began preparing to replace the new wings of the No. 01 verification aircraft, and made corresponding adjustments and upgrades to the flight control for the new wings.

As for the director, Zhou Yonghang, he went directly back to the office and prepared to call Du Yishan to inform him of the exciting news.

But when he just picked up the receiver of the red phone on the table, a bald white man walked in from the door.

"Director Zhou, what happened? I saw that Unit 01 had just performed a test flight, and then your people dragged it into the workshop instead of the hangar. Is there any malfunction?"

"Don't worry, Mr. Hogent, Unit 01 is in very good condition."

Zhou Yonghang put down the phone and looked at Huo Gent, who was panting slightly because he went upstairs too quickly and was a little nervous, and said with a smile, and he also took out the teacup and gave the latter a glass of water.

Hogent was obviously relieved after hearing this answer, took the tea cup and sat on the sofa next to him:

"Since there is no problem, why should the aircraft return to the final assembly workshop? After all, this is the critical stage of airworthiness certification, and it is best not to make changes to the technical status."

As a technical consultant for the Y7-200A aircraft, although Hogent does not have to bear any responsibilities, as a senior engineer of British Aerospace Corporation, he still has to consider his reputation in this industry.

Therefore, he does not want to see any risks or delays in this project.

It is impossible to change the wings of an airplane, a huge change that can be seen at a glance, and there is no need to hide it. Therefore, Zhou Yonghang, who sat back behind his desk, answered directly:

"After detailed technical demonstration, we decided to upgrade the No. 01 aircraft with a newly designed wing. Considering that the new wing can bring huge performance advantages, a slight delay in the airworthiness certification work is acceptable."

"New wings?"

Hawking, who had just breathed a sigh of relief, stood up again and even spilled some water in the cup:

"But I have told you before that the new wing will easily induce flutter when installed on the aircraft, and safety cannot be guaranteed at all!"

"I understand that you want to build a passenger plane with advanced performance, but before you want to run, you must at least learn to walk. Such recklessness may lead to the plane crashing and killing people!"

Hogent's Chinese is very good. He only uses English when discussing technical issues because he is worried about inaccurate expressions, so these two sentences really made him speak with some momentum.

"Mr. Hogent, of course we are not reckless. In fact, the test flight just conducted was to verify a new technology of flutter control, so now we have the ability to replace the aircraft with new wings while ensuring safety. .”

When he said these words, Zhou Yonghang simply felt more relaxed than ever before.

To be fair, among the foreign experts invited by 603, Hawkint from the UK is considered the most responsible one, and he is not shy about imparting some of his experience to Chinese engineering staff on weekdays.

But no matter what, these foreign consultants usually look at China Aviation Industry with a more or less condescending attitude.

Who makes you lag behind others?

But this time the situation is completely different.

What others still have on paper, we have already achieved.

This experience...

Comfortable!

"New technology for flutter control..."

The expression on Hogent's face changed:

"But I am the technical consultant responsible for the aerodynamic analysis of this model. Why am I completely unaware of such a major improvement? How does this new technology work? How can I ensure that the subsequent airworthiness certification work is carried out safely?"

"Mr. Hogent."

This series of questions made Zhou Yonghang’s expression become serious:

"It's true that you are the technical consultant responsible for aerodynamic analysis, but according to the contract, the final decision on aircraft design rests with us. Your job is only to solve the technical problems raised by us. We are not obliged to inform you of all the details of the aircraft design."

"As for the principles and implementation methods of new technologies, these are the technical secrets of our Chinese Aviation Industry. I don't think you can hand over the core technology of your British Aerospace Corporation to us casually, Mr. Hawkint, right?"

"This……"

Huo Gent was speechless by Zhou Yonghang's two words. After opening his mouth, he couldn't say anything else.

……

After sending Huo Gent away, Zhou Yonghang, who was in his sixties, almost jumped back to his desk and picked up the phone receiver again.

"Lao Du, it's successful, we've succeeded here!"

After the call was connected, Zhou Yonghang was so excited that he didn't bother to announce his home address. In addition, his voice was slightly distorted. Du Yishan was even stunned for a moment before he realized who was on the other side of the phone.

"Is it... is it Lao Zhou? Did you successfully verify the active vibration control?"

Although he had great confidence in Chang Haonan before, when he actually heard the news, the latter's voice still trembled a little.

After all, this is the first time that Chinese people are at the forefront of the world in aerospace engineering applications.

For the older generation of aviation people who have learned and imitated step by step, how can they express their feelings clearly in words?

"Yes, we just conducted a test on Unit 01, and the results are indeed the same as the information you brought over that day. It can increase the flutter critical speed by at least 10%!"

Zhou Yonghang on the other side of the phone was also excitedly wandering within the length of the phone line:

"We have already started to replace the wings and flight control of the aircraft. In this way, the performance of the new Y7-200A will definitely surpass that of the ATR42, and we can finally make a turnaround!"

"No, this is not only a turnaround for the Y7-200A model, but also a turnaround for our 603 Institute and even our China Aviation Industry!"

"Lao Du, you didn't see the look on his face just now when the Englishman Hawkint came to ask me what was going on with the new wings. I said it was a technical secret and I had nothing to say."

"In the past, foreign experts used technology to block us. I never expected that I, Old Zhou, would have the opportunity to say this to foreigners!"

Zhou Yonghang talked endlessly into the phone for several minutes, and there were some tears in his eyes at the end.

As an old technician who, like Du Yishan, has followed the new China's aviation industry from scratch, he is really looking forward to a day when he can be proud and proud.

Although many parts of this Y-7-200A are made in foreign countries, even the prototype of this aircraft is copied.

But at least, now we finally have our own core technology on it.

A thousand miles begins with a single step.