Siheyuan: I eat melons while doing scientific research

Chapter 1096 The minority obeys the majority
Hey, even if you didn't ask, I was just about to say it, Gao Zhendong laughed. This comrade thinks very quickly and accurately, and he knows a lot about electronics and mechanics.

"Well, that's a good question. You probably know about the detailed technologies regarding chip reinforcement, circuit design, electromagnetic compatibility, connection reliability, and software automatic troubleshooting. Some of these are solved by component equipment manufacturers, so I won't go into details here..."

"Yes, I didn't learn much about electromagnetic compatibility design until I studied your book on electromagnetic compatibility design."

This comrade's words made other comrades look at him with new eyes. Very good, comrade. He asked questions and flattered others.

Gao Zhendong changed the subject: "But even if all these measures are taken, the reliability of the electronic system is still not as good as that of the mechanical system, and it cannot be completely solved..."

The comrades were stunned by Gao Zhendong's words: "Then..."

Gao Zhendong shook his head: "If we can't solve it completely, then don't solve it. We will work hard to make it happen and use the redundancy system to ensure it."

"Redundancy? Do you mean using a backup system or redundant design?" The comrades all understood. They understood that the traditional method is useful and should be used more often. Anyway, the wiring of fly-by-wire control is very economical. Even the decoding control unit is actually not that big and heavy. It is worth it to arrange several sets compared to the effect that can be achieved.

Look, Chief Engineer Gao’s main goal is to save where necessary and spend where necessary.

"Not exactly. As for the backup system, even if it is a hot standby, it is difficult to achieve perfect timing and speed of taking over the main system in the current technical environment. It is still very dangerous for the aircraft."

Gao Zhendong's words brought the comrades back to reality from their excitement. Judging the timing and accepting speed are two things that may not sound difficult at first, but are actually very troublesome.

"Then how should this redundancy be used?" The comrades were very curious. If redundancy is not based on primary and backup, what other methods are there?
Gao Zhendong laughed and said, "Let's make airplanes democratic too. Let them vote!"

vote?

Comrades were confused at first. How could this thing be democratic? Then they gradually realized what was going on.

"This is a good idea. As long as the reliability of a single system is improved to a certain level, the majority consistency of multiple systems can be used to ensure overall reliability."

“The minority obeys the majority. This is a simple and honest principle, but it can really solve problems.”

"Yes, yes. Think about it. As long as the reliability of one system reaches 70%, the reliability of the three systems together will be 210%!"

"Fuck, what the hell are you?"

"It's just a joke, hahahaha, but Chief Engineer Gao's idea is really good, simple and crude, but it can solve the problem."

"..."

Listening to the discussion of his comrades, Gao Zhendong smiled and said, "For fighter jets, under the current technical environment, my suggestion is at least 4 degrees of redundancy. For bombers and transport aircraft that do not have much maneuverability, 3 degrees of redundancy can be used."

The comrades nodded one after another. This was very down-to-earth. If the requirement for high mobility was high, they should do more; if the requirement for low mobility was low, they should do less. Anyway, there was still time for small movements.

Seeing the comrades' uniform movements, Gao Zhendong added: "In addition, not only can the fly-by-wire control be arranged in a redundant manner, but some important sensors can also be arranged in a redundant manner, especially when it comes to life safety."

At least there can't be only one sensor responsible for pitch, and it can't be competing with the pilot for the stick, Gao Zhendong thought.

Look, Chief Engineer Gao still puts life safety first. Comrades wrote down Gao Zhendong’s words in their notebooks.

Seeing that there were comrades here who were not engaged in fighter jets, Gao Zhendong also made a suggestion for them: "By the way, for low-maneuverability aircraft, the specific system architecture can even be fly-by-wire in the vertical direction and mechanical in the horizontal direction, especially when improving work."

After all, there are usually only one or two rudders that need to be controlled in the horizontal direction, and there is not much benefit from making large-scale improvements. After all, if the improvement is too big, the cost may be much higher than the benefit. Specific engineering is always the result of trade-offs and compromises.

These comrades all laughed. Chief Engineer Gao has never given up the idea of ​​saving where necessary and spending where necessary.

As the discussion went on, Gao Zhendong explained and answered questions. When the meeting ended, the comrades who were working on the aircraft all had very satisfied expressions on their faces. Hehe, fly-by-wire control is a good thing. Especially the comrades from the China Aircraft Factory, their eyes lit up when they saw this thing. If it can be really developed, the weight and other paper performance of the Z-7 can be improved by at least one or two points. Add in the advantages of controllability and maintainability, and there will be even more.

The other wave is the comrades who imitated the Tu-16. This thing has a long fuselage, the weight of the whole system is not small, and it is fully rigid hydraulically operated, which is amazing.

From the perspective of design and production, the layout problem was solved by the Russians, but the trouble of production and maintenance was not reduced at all.

You don’t have to consider modifying old aircraft, but it is still worth considering new imitation aircraft.

Just this one item, at least hundreds of kilograms can be saved without any problem, and it can also bring a lot of other benefits. As for other comrades, they are temporarily willing but unable to do so, after all, there are not many comrades who have new projects on hand.

What the comrades working on Tu-16 did not expect was that Gao Zhendong specifically sought them out when the meeting was about to end.

"I suggest that you work hard on the fly-by-wire control system for this type of large and medium-sized transport aircraft. If you have any difficulties in establishing the project, you can contact me and I will explain it to the Defense Work Committee and help you push it forward."

Bombers are also transport aircraft, except that they carry bombs and can drop them mid-flight. However, in terms of size and usage characteristics, bombers and transport aircraft are similar. The Russians also modified the Tu-16 into a Tu-104 passenger aircraft. Of course, Gao Zhendong was not very interested in the Tu-104.

Although no one knew what Gao Zhendong was up to, he personally cared about this matter and even came to our unit specifically to discuss the matter. The comrades who were copying the Tu-16 were still very happy.

They knew very well that if their unit's request to improve the Tu-16 copy model to fly-by-wire control had a - chance of getting approval, then with Gao Zhendong, the success rate of this matter would be very high.
They simply hammered the matter out: "How about this, Chief Engineer Gao, we write the application and you sign it? Haha."

They probably knew that Gao Zhendong didn't directly ask to file a report together because he was afraid of misunderstanding, so he just left a loophole for himself. But leaving a loophole is definitely not as direct as signing the report directly. If you miss this opportunity, you will never get it again.

Gao Zhendong nodded: "Okay!"

The comrades did not have their meal at Factory 1201. For those comrades who had come from afar, it was much more appropriate to have their meal at the Defense Work Committee, mainly because they could talk freely there.

Factory 1201 is certainly not as good as the Defense Working Committee in terms of confidentiality management, and there are many people of varying kinds. Many topics are difficult to discuss when eating in the cafeteria here. However, after listening to Gao Zhendong's ideas and thoughts, the comrades who had been in the meeting for most of the day all had a lot to say and wanted to discuss with their comrades.

After seeing off the comrades from the Defense Work Committee, Gao Zhendong turned and walked towards the Computer Equipment Research Institute.

In a small conference room in the research institute, Gao Zhendong found Lin Lianwei, Su Weihua and Xue Chongli.

Director Xiao Gao was a sensible man. After receiving the three people, he chatted with them, showed all courtesy, and left his contact information. Then he left on the pretext of work, leaving the three students here to chat nonsense.

If I want to build connections, I can't do it today. Today is the day of their classmates' reunion. If I stay here all the time, I will be an eyesore. If I accidentally hear some secret of Director Da Gao, it will be even worse. I will have to live in fear for the rest of my life.

Therefore, the best way to deal with it is to slip away when the time is right and leave space for these old classmates.

"Now we're waiting for you. We've been drinking so much water that our stomachs are full." Lin Lianwei joked when he saw Gao Zhendong coming in.

"Haha, work is important, work is important. The tea here is pretty good." Xue Chongli added.

Gao Zhendong smiled and said, "That can't be helped. The comrades have come from afar, so we must take the opportunity to resolve all the issues. We can't let them make another trip. Do you think others are like you, staying in the capital."

Faced with Lin Lianwei's joke, Gao Zhendong showed no weakness and directly fired back at Lin Lianwei.

"Yes, yes, I know you're busy with work. Let's go, let's eat! I'm starving."

"Yes, yes, yes, eat, eat." Su Weihua didn't say much and went straight to the point.

Gao Zhendong smiled and said, "Do you want to go to the Third Rolling Mill or eat here? We can eat here right away. As for the taste, the Third Rolling Mill is silly... well... Master He's cooking skills are pretty good."

Xue Chongli didn't feel anything, as he had only eaten Sha Zhu's cooking a few times, but Lin Lianwei and Su Weihua knew about it.

This put Lin Lianwei in a dilemma. Master He's craftsmanship was really good...

After hesitating for a long time, he tightened his belt and said, "Let's go to the Third Rolling Mill. What do you think? Lao Su, Lao Xue."

Su Weihua agreed readily. He also felt that Master He's cooking skills were worth going hungry for a while. Xue Chongli, on the other hand, was indifferent and just followed the crowd.

The four of them got into Gao Zhendong's car and headed straight for the third rolling mill.

"Hey, you're here? I saw you didn't come to the factory this morning." Sha Zhu was happy to see Gao Zhendong. He saw Gao Zhendong's car going in another direction when he went out in the morning.

"Old He, since you don't want your cooking skills anymore, you just drag Zhendong over here. Hahaha." Lin Lianwei and Sha Zhu are quite familiar with each other, as is Su Weihua.

"Hey, just think about my cooking skills. Next time you want to eat, you don't have to bring Zhendong, you can come by yourself. I will sort out the stock that Zhendong has stored for you, hahaha." Sha Zhu laughed, and after just a few laughs, he slapped his head.

(End of this chapter)