Chapter 47 Active flutter control, success!
After passing the first phase of verification, Yi Yuanhe immediately organized manpower and began to prepare 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 No. 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, the situation of aircraft 01 is very good."
Zhou Yonghang put down the phone and looked at Hogent, who was breathing heavily probably because he went upstairs too fast and was a little nervous. He said with a smile, and took out the tea cup to get a glass of water for the latter.
Hearing this answer, Hogent was obviously relieved, took the tea cup and sat on the sofa next to him:
"Since there is no problem, why should the aircraft return to the assembly workshop? After all, Now 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 Hawkint does not have to bear any responsibility, as a senior member of British Aerospace Corporation. As an engineer, 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 aircraft such a huge change that can be seen at a glance, and there is no need to hide it, so Zhou Yonghang, who sat back behind his desk, answered directly:
"After 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?"
Hawgent, who was relieved just now, 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 create a high-performance aircraft. It is an advanced passenger aircraft, but before you want to run, you must at least learn to walk. Such recklessness may cause the aircraft to crash and kill people!”
Hokgent’s Chinese is very good, only when discussing technical issues, Because he was worried about expressing himself inaccurately, he only used English, so these two sentences really made him speak with a bit of 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 control the aircraft while ensuring safety. Get new wings.”
When he said these words, Zhou Yonghang felt unprecedentedly relaxed.
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.
We have already realized what others are still doing on paper.
This experience...
Comfortable!
"New technology for flutter control..."
The expression on Hogent's face changed:
"But I am the technical consultant responsible for 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?
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, and we are not obliged to inform you of all the details of the aircraft design."
"As for the principles and implementation methods of the new technology, these are the technical secrets of our China Aviation Industry. , I don’t think you can hand over the core technology of your British Aerospace Corporation to us casually, Mr. Hawking, 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, who was so excited, didn't bother to report his home address, and his voice was a little Slightly deformed, Du Yishan was even stunned for a moment before he realized who was on the other side of the phone.
"Yes... is it Lao Zhou? Have you successfully verified the active vibration control?"
Although I had great confidence in Chang Haonan before, when I really heard the news, the latter's voice Still a little trembling.
After all, this is the first time that Chinese people have been 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 critical flutter 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 started to replace the wings and flight controls of the aircraft, so that the performance of the new Yun-7-200A will definitely be better. Beyond ATR42, 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 Chinese aviation industry!”
"Lao Du, you didn't see it. Just now the British man Hawkint came to ask me what happened with the new wings. When I said it was a technical secret and had no comment, his face . ”
“In the past, foreign experts blocked our technology. 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 feel 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 journey of a thousand miles begins with a single step.
(End of this chapter)