The military industry people arrived earlier than they planned.
As soon as I arrived, I went straight to the destination, wanting to see the specific results.
Qiu Yuling led the military representatives to the experimental base and first demonstrated it through a simulator.
"How can such a small thing be so powerful?" Someone muttered softly.
Qiu Yuling raised her eyelids and took a look.
He happened to see the home team next to him also glaring over and said, "If you don't understand, just stop talking." He shouldn't have agreed to take him out.
As the saying goes, the layman sees the excitement while the expert sees the details. Those who understand will naturally know the significance of this rotor system.
Qiu Yuling retracted her inconspicuous glance and waited patiently to be asked questions.
"Where are your engineers? We would like to communicate directly with them regarding specific technical issues."
People in the military industry certainly knew who Qiu Yuling was, but they thought she was just a factory manager and might not understand technology.
I still think it is more appropriate to let professionals do professional things.
"It's really unfortunate that you arrived early. Our engineers have gone to the factory to check the machines. But if you have any questions, please feel free to tell us.
Besides the chief engineer, the rest of us involved were able to answer a few questions. Even if we couldn't, she was there to back us up.
The military industry representative frowned, but said nothing more.
After walking around and asking some intricate questions, the military representative at the front finally raised the most important question: "The bending load on the blades and hub is too high!"
Several technicians didn't know how to answer this question. This is indeed one of the biggest disadvantages of the hingeless propeller hub.
Qiu Yuling responded in time, "During the flight of a helicopter, the blades need to withstand huge centrifugal forces, lift forces, and swinging forces.
Larger bending loads will place higher demands on the material strength and structural design of the blades and hub, which may lead to reduced fatigue life of the blades and hub and increase the frequency of maintenance and replacement.
However, it has a simple structure and fewer parts than the articulated hub, which not only effectively reduces the overall weight of the hub, but also simplifies the manufacturing process to a certain extent, reducing manufacturing costs and maintenance difficulty.
What is more noteworthy is the high control efficiency, high aerodynamic efficiency, and high reliability. Each of these advantages is enough to ignore the disadvantages brought by the load..."
Having said that, she went on to elaborate on several advantages and the effects brought about by actual application.
The leading military representative glanced sideways frequently. He had always thought that Qiu Yuling's colleagues were only performing the highest level of reception etiquette, but he didn't expect that she was the one who knew the most. She even answered technical points better than several other technicians who were working with her.
"Director Qiu also studied mechanical engineering?" I couldn't help but ask.
"That's not the case. When it comes to business, I'll learn and observe more. As for the details, our chief engineer will accompany the installation and explain everything on site. I can't help but show off my skills here, so please forgive me."
In fact, the rotor system they developed, although already of super high level at that time, did have many drawbacks.
Metal blades are prone to fatigue cracks after long-term use and require regular non-destructive testing, such as ultrasonic testing and magnetic particle testing, to check for cracks inside and on the surface of the blades. The testing process is complex and time-consuming.
In addition, the metal blades need to be treated with anti-corrosion to prevent rust and corrosion in harsh environments, which increases the maintenance workload.
The articulated propeller hub is a complex structure consisting of multiple hinges, bearings, and connectors. These components are subject to enormous loads and vibrations during flight, and are prone to wear and loosening, requiring frequent inspection and replacement.
Each inspection requires the disassembly of a large number of parts, which requires high skills from maintenance personnel. The maintenance process is also cumbersome and time-consuming.
But these are all drawbacks of the times. The development of materials and technology can only be iterated step by step.
The many shortcomings that Qiu Yuling knew in her heart were all advantages to the military representatives who came to investigate.
They did not intend to succeed on this trip, but they just did not want to miss any opportunity to strengthen themselves without relying on imported technology.
I didn’t expect that the trip was worthwhile.
The supply agreement was signed that same day.
Of course, compliance with the "Interim Provisions on Promoting Economic Integration" proposed by the State Council and subsequent supplementary agreements fully complies with the requirements of large state-owned factories and military-industrial enterprises to break down boundaries and form new production capabilities.
The installation factory, which had always been low-key, became even more secretive. Besides being mysterious, it also became very difficult to enter.
It turns out that some leaders with connections would send their own sons and nephews to installation factories with good benefits, but later they found that it was not feasible at all.
Not to mention whether Qiu Yuling would give in or not, even ordinary workers who were recruited had to undergo political review, and those who came in later were almost all top-notch students with matching majors.
Everyone suddenly realized something was wrong. They didn't know when the company under their noses became so secretive and secretive.
But no matter how curious you are, you won't find out anything. If you ask too much, you will be reported and investigated by people with ulterior motives.
Qiu Yuling was so busy that she stayed until the end of the year.
She had originally thought of not going back, but then she thought about this year's New Year's Day and the bustling atmosphere of people traveling back and forth from all over the country, and she really worried about the few old and weak soldiers.
It was thanks to her that she went, the train was unlike the deserted ones in previous years, it was practically packed.
She brought her parents with her, and Li Xingyao, one of them dragged the luggage while the other took care of the child, and they found their own berth with great difficulty.
Li Qingmei wiped the sweat from her forehead and said, "I've never seen so many people before!" It's just that the times are different now.
He touched his chest and said, "Oh, no, the thing is gone."
While putting her luggage away, Qiu Yuling asked her what was missing.
"The money I sewed into my jacket pocket is gone!" Li Qingmei was almost crying in anxiety. It was a full five hundred yuan, and she had put it all together.
"Here it is. When I was hanging up your clothes last night, I took it out and put it away separately. There are so many pickpockets these days, so don't carry valuables with you when you go out." Qiu Yuling had no intention of returning it to her now, she just explained that it was not lost.
Li Qingmei waited for a long time, but her daughter didn't return it to her, and she felt a little embarrassed to ask for it. Then she thought, her daughter bought this and that for the family during the New Year, so she should just give it to her in advance.
Qiu Yuling also discovered that money is the courage of the poor. In the past, Li Qingmei would never be so calm. If she didn't get the money back, she would definitely be sitting on pins and needles.
Now I just have to be sure that it is not lost, so I can let it go. This is a huge improvement.
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