Siheyuan: I eat melons while doing scientific research

Chapter 1095 Already prepared
In fact, it was a chain of effects, or rather, the idea came first, and then it was discovered that fly-by-wire control was a prerequisite for this idea.

But in Gao Zhendong's case, he shot the arrow first and then drew the target, which was the reverse of the process.

Anyone who is a military fan will know what his ultimate goal is as soon as he hears it.

——Relax and stabilize.

At this point, we have to bring up the F-15 again. As the earliest third-generation aircraft, this thing is not relaxed about static stability. Its performance is so good, all thanks to one thing - the engine! It is a typical example of a powerful flying brick.

But our comrades know nothing about this. After all, the concept of relaxing stability is still in its infancy, not only in China but even abroad.

Gao Zhendong's words made the comrades present fall into a complex emotion of confusion, doubt, surprise, etc.

"Isn't this possible? What technology can achieve this effect?"

"But this was proposed by Chief Engineer Gao, and I think it's reliable."

"I think it's quite reliable. Didn't you see that Chief Engineer Gao didn't say anything more? Do you know what this means?"

"It means that his consideration is very mature and he can't say any more. If he continues, will the head of our National Defense Work Committee tell him to shut up?"

This reason sounds ridiculous, but other comrades think it is very powerful and agree with it.

"Well, don't say that. Don't say that. What you said really makes sense."

"Yes, yes, yes, this is not the first or second time that Chief Engineer Gao has covered his mouth during meetings. This is indeed the truth."

"If you ask me, even without the last reason, the weight reduction, fit, easy repair, fast response, refinement, and easy integration are enough to attract me."

"Don't your last three points overlap with the last point Chief Engineer Gao said?"

"Then you are wrong. Regardless of whether Chief Engineer Gao mentioned the last point or not, the last three points still exist and are also very obvious advantages."

The comrade who said this has seen the essence. Even if the mobility is not improved, these three points can at least improve the controllability, which is also a huge advantage. Mobility and controllability are not equal.

"Yeah, yes, yes, you do make sense..."

Amid the discussion among the comrades, the chief engineer of the Defense Work Committee turned to Gao Zhendong with great surprise and said, "Should we also keep some comrades here to attend the meeting on the last technology you mentioned?"

Anyway, I have already kept it several times, so I don’t mind keeping it one more time. The important thing is to mine quickly.

Gao Zhendong thought about it and shook his head: "I won't keep it this time. For most comrades, fly-by-wire control is enough. As for the last one, I think I can just discuss it with the comrades who are working on air superiority fighters. That must be a new aircraft to be able to make it. That thing must be designed in the womb, and it is almost impossible to improve it later."

Speaking of this, the F-15 has to be brought up again. Even if it has been improved to the F-15EX, whose number is even less than that of a small train and a large destroyer, it is still a statically stable aircraft, even with fly-by-wire control.

Because the relaxed static stability technology has to be designed starting from the aircraft structure, center of gravity, overall aerodynamic layout, and aerodynamic shape, it is an overall technology engraved in the DNA. Not to mention finalizing it, as long as the overall plan is determined, there is almost no possibility of change.

What is relaxed in the womb cannot be made calm and stable, and vice versa.

"Okay, I understand. You know what, it's about time to push this matter further. I'll start arranging it when I get back." The chief engineer understood and nodded.

"Comrades, don't worry about the technology that Comrade Zhendong mentioned today. Let's discuss the fly-by-wire control. Hahaha." The chief engineer took back the words, leaving a group of comrades feeling itchy.

What technology works so well? I'm so curious!
However, the chief engineer has said so much that the comrades have to pull their thoughts back to discuss the details of fly-by-wire control with Chief Engineer Gao. A bird in the hand is worth a thousand in the bush. If you are not allowed to ask, don't ask. Take advantage of the opportunity to clarify the fly-by-wire control. After all, fly-by-wire control itself is pleasing enough.

"Chief Engineer Gao, your idea is to use the 'military equipment data bus' you mentioned earlier to transmit data, and then control the various control surfaces. But in this case, the hydraulic system is still indispensable, right? After all, the motor that can withstand such a large force, plus the reduction mechanism, is not small in size and weight, so the hydraulic system is still necessary."

As long as a hydraulic system is needed, then some equipment to build up pressure is necessary, and this has to be connected from the engine. If this is the case, then the benefits gained will not be that great.

Gao Zhendong shook his head: "Instead of hydraulics, use stepper motors! If we still use hydraulics, the benefits of electric transmission will be at least half as good. The refinement, fast response, easy layout, and light weight will not meet the expected requirements at all."

There were no servo motors in those days, but stepper motors could be used in this matter. The comrades looked at each other and shook their heads. Chief Engineer Gao was still not familiar with the details, at least the details of the aircraft.

The only exception was the comrades from the Porcelain Aircraft Factory. They always felt that Chief Engineer Gao must have a backup plan. The main reason was that they knew very well that Chief Engineer Gao might not know every detail of the aircraft, but he should be familiar with everything he proposed.

"Chief Engineer Gao, a motor with this much power, plus a reduction mechanism, must be large and heavy. If you calculate it, it may be more troublesome than hydraulics."

Gao Zhendong did not hesitate at all: "All it takes is a suitable stepper motor, plus a reduction mechanism with a large enough transmission ratio, a high enough load, and a small enough volume and weight."

Comrades were confused by his self-righteous attitude. Isn't this nonsense? If we have this thing, why would we worry about it?

Look at the requirements you have, the transmission ratio must be large, the load must be high, these two are fine, after all, great force can make miracles, as long as it is big enough, everything will be fine, but the last requirement is that the volume and weight must be small...

It is said that comrades in the army want both and more. It seems that Chief Engineer Gao is worthy of being a military man and is not inferior in this respect.

"Comrade Zhendong, this thing...he doesn't have it. Even if it is a planetary gear transmission, it is difficult to meet the last requirement of small size and weight." Seeing that other comrades were reluctant to speak, the chief engineer of the Defense Work Committee raised the concerns of the comrades.

Gao Zhendong chuckled, looking very proud.

There is a way!
Seeing Gao Zhendong's reaction, the chief engineer and comrades from the Cifei Factory who knew him better reacted.

Comrade Zhendong never fights a battle without confidence. The fact that he dared to put forward this idea probably means that he had already considered it or even made arrangements for it.

The chief engineer patted his head and thought that he was careless and had forgotten Comrade Zhendong's habits.

"Comrade Zhendong, do you have a solution?"

This is not because the comrades are incompetent. After all, we have only just emerged from the old society and lack so many things that we cannot even think of any solutions. This is not the case decades later when we can search online and find the principles or routes for many things. This is due to the general environment, not the comrades’ fault.

Gao Zhendong still had that smug smile on his face and nodded: "Yes, do you remember Wei... In order to solve..."

Fuck, I can't seem to say...

In this case, Gao Zhendong did not explain the whole story, but just the result: "In short, we are cooperating with comrades from the 11th Ministry of Machinery to develop a cycloid pinwheel transmission machine, which is just suitable for this situation. Now the progress and results are also very optimistic. Boss, you should remember this matter."

After Gao Zhendong reminded him, the chief engineer also remembered it.

"Ahhh, yes, yes, I remember now, there is such a thing, yes! It's suitable for this situation!!"

No wonder Gao Zhendong was hesitant when talking about this matter, because this thing was related to satellites and it was really difficult for him to explain.

Holy shit! Is there really such a thing? Even something that is almost ready-made?
The comrades were full of admiration. The conversation between Gao Zhendong and the chief engineer made them certain of one thing - this thing called a cycloidal pinwheel was really suitable, and we actually had it!
Although they didn’t know what the relationship was between transmission and needlework, the comrades put aside their worries and felt safe!

With the onboard computer, reinforced single-chip microcomputer, military equipment data bus, and the needle and thread transmission machine, the hardware foundation of the fly-by-wire control has been laid. The remaining issues are design, software, debugging, summary, and improvement.

The comrades were a little ashamed, thinking that Chief Engineer Gao was not clear about the details of the aircraft and was only concerned with takeoff and not landing. They did not realize that they were on the first layer while others were in the atmosphere, and they could solve whatever was missing first.

Now that the most troublesome issues have been resolved, what remains are the details. There is no need to trouble Comrade Zhendong with these matters anymore, and we can't afford to lose face.

However, some comrades still wanted to clarify their doubts. It would be a waste of the opportunity if they did not ask clearly while Chief Engineer Gao was here.

"Chief Engineer Gao, I have a question about reliability." A comrade raised his hand.

"You said."

"We all know that the reliability of today's electronic systems is not as good as that of mechanical systems. Computer programs may run wild, equipment may stop working due to environmental factors, and so on. In addition, electrical signal transmission may be interfered with, resulting in errors and disconnections. If these situations occur, it is very dangerous to the aircraft. As an expert in electronics and computers, do you have any suggestions in this regard?"

This question was asked in great detail, and it was only asked after one had already started to consider building this system. Moreover, every word he raised was true, and they happened to be the biggest hidden danger of fly-by-wire control - this thing is really not as reliable as a mechanical one.

(End of this chapter)