"Yes, I mean that the cause of the accident must be inseparable from the fact that the two shafts have different speeds." Long Derong said his inference, and set the cause of the accident on two main axes.

The reason for the axis? Hearing this, the group of people who were about to lie down on the table leaned their heads closer and carefully observed every tiny detail of the entire connection of the spindle.

When everyone here had enough observations, Yang Hui gathered people together again, and followed Long Derong's train of thought to think about what might lead to the final accident.

"Comrade Long Derong has already said his thoughts just now, and everyone has carefully observed the axis of the accident, so let's speak freely and express our thoughts."

As soon as Yang Hui finished speaking, Xie Lianfa couldn't wait to say his conjecture, just now he inadvertently thought of a possibility, and then the more he thought about it, the more reliable it became. Now he wants to put this idea out there, and everyone will refer to it together.

"I just said that one is to realize different data on the two spindles, and there are many differences between the two axes, but I have ruled them out, and finally there is one of the most possible points: rotational speed."

Pick up the white paper on the table and write the words "different speeds", and then slowly write "melt at high temperatures". Then the pen was still on the table.

Seeing these six key words, I finally had a feeling of sudden enlightenment.

"You mean, the bearing rubs against the rubber washer at high speed, and then the high temperature is generated, and the rubber washer melts and finally burns out?" Yang Hui first said the meaning of the six words.

Seeing that Team Leader Yang said what he wanted to express, Xie Lianfa continued to explain Yang Hui's words.

"That's right, because the rotational speed of the two mid-week rotations is different during the start-up period, and the later period of time is different, so the rubber on the turbojet spindle is more seriously damaged."

If you think about it in this way, you can explain why the two rubber rings are damaged to different degrees. However, as the designer of the whole starting system, Long Derong knew that the reason for this explanation was different, the two spindles in the design are impossible to have relative friction with the rubber washer, and the rubber ring is directly sleeved on the spindle by its own good elastic performance, and the spindle will not rotate on the rubber contact surface.

Unless the spindle is slipping, the frictional resistance of the bearing and rubber ring is less than the force that the motor is going to transmit to the washer. But this question is clearly untenable.

This idea does not make sense, according to this idea, the only reason is that the friction resistance between the spindle and the rubber ring is less than the force that the motor has to conduct to the gasket. But this does not explain the fact that we successfully started the turbojet, which means that the force to be transmitted by the motor is transmitted to the turbojet spindle here. ”

Hearing this, Yang Hui thought of another small detail in the test, when the spindle of the vortex was fully rotated, it took a long time to use force. However, this small problem did not attract everyone's attention, as long as the motor here drives the spindle to rotate, it is normal to be a little slower, it comes down to the fact that the new engine is not running-in, and the friction resistance in some places is relatively large, and it is normal for the motor to drive it more hard.

But this small detail is a key point in solving the problem on this side. Yang Hui spoke his mind again.

"Not necessarily, I noticed a small detail at the time, the time it took for the whole turbojet to start to reach the predetermined speed was much longer than the design expectation."

Yang Hui took the accident spindle on the table next to him, pointed to the spindle and continued to explain, "This means that the output power of the motor at that time was not all transmitted to the spindle of the turbojet, so where is the remaining part of the power loss?" ”

After a pause, I gave everyone a time to think, but seeing that everyone still hadn't figured it out, Yang Hui could only continue to say, "Here I will make a bold assumption: in fact, the friction resistance between the motor spindle and the rubber ring and the force to be conducted are just in a critical range, and the output power can be completely conducted after this range; If it doesn't, it will slip, and there will be no conduction of force, and it will not be able to transmit to the main shaft of the turbojet; If it happens to be in this range, only part of the force will be conducted, and the rest of the loss will be between the motor spindle and the rubber ring. ”

At this time, I finally got through everyone's second line, and I understood it at once. Long Derong stood up and patted his thigh, excitedly saying what he understood Yang Hui meant.

"What Team Leader Yang means is that we are exactly in this range, right?"

What Yang Hui said was so obvious, of course, it was not only Long Derong who understood the meaning, but others also understood, Zhong Jian agreed and agreed: "Yes, it should be this reason." ”

At this time, I finally figured out a possibility, although I didn't test it, I don't know if it's the reason, but now that I've found a possibility, I should be happy.

Yang Hui was very relieved to see that everyone understood their thoughts. He happily stretched out his hands and applauded slowly, nodding his head while clapping, matching his smiling expression. No matter how you look at it, if the three kings of North Korea see it decades later, they will definitely sue him for infringement.

"For reasons like this, we don't need to do any more testing, just modify the design slightly, and we can test it again."

There are many ways to change the friction resistance, all of which are relatively simple, and it is also very simple to increase the resistance. A few additions to the drawing are all you need, and you don't even need to redraw them.

At this time, although the project team had several ways to modify the design, no one said it. looked at it and didn't speak, everyone looked at themselves, Long Derong was moved for a moment. This is a team, at this time still thinking about themselves, hoping that the designer can personally modify this small design.

"Thank you."

Long Derong couldn't help but be moved, silently opened the drawing, picked up the drawing ruler, and deliberately marked a very low roughness technical requirement at the junction of the rubber gaskets of the two spindles.

That's right, this modification is so simple, you only need to reduce the roughness of the joint, you can do it at once, increasing the roughness can directly and effectively increase the friction resistance, this is the easiest way.

In the end, the solution of this problem is not far from ten, and they are relieved, and now they need to find a factory tomorrow to modify the roughness of a bearing and then go to the test again.

After a night of all-night research, as soon as the problem was found, I was relieved in one breath, and I was drowsy.

Seeing that the time was almost dawn, Yang Hui directly announced the disbandment. Now he can't do it, he has to lie down on the table and sleep immediately, this night is too draining, the pressure is too much.

Yang Hui directly fell asleep on the table, and as Yang Hui began to take the lead in sleeping, the others were also tired and began to sleep on the table, and no one went back to the dormitory to sleep, for Ha, because tonight is overtime, who dares to leave the army and go back to the dormitory to sleep.

In this way, there were six or eight young men sleeping in the office groggily, until Yang Yue walked into this office and saw a room of people lying here.

Yang Yue knew that Yang Hui was working overtime all night, so she went to the cafeteria early in the morning to bring six portions of food and mentioned it to the office. The person in charge here is his future husband, and his starting team, and now it's time to take care of them himself.

Gently put down the food, walked behind Yang Hui and looked at the man who was still asleep, Yang Yue gently woke Yang Hui up.

"Hurry up, everybody's coming to work."

Yang Hui, who was in a daze, heard someone call him to get up, and slowly opened his eyes. I saw a beautiful face. Thinking that he was dreaming, he immediately buried his head and continued to sleep.

Seeing that he had just woken up and had started to fall asleep in a few seconds, Yang Yue had to rub Yang Hui's face vigorously. Now I finally came to my senses.

"Oh, it's Yueyue, you're so early?"

"Well, I see that you are going to stay up all night, so I brought you something to eat, for six people, go and call your comrades-in-arms up."

Bang Yang Hui up, Yang Yue sat on Yang Hui's chair and watched Yang Hui go to call someone.

"Bang bang," Yang Hui slammed the table with a shocking sound, and anyone who slept to death would wake up, unless he really slept to death.

"Get up, get food, go quickly."

This is really a simple and rude, but it is useful, and a few people who are still sleepy when they get up run to the faucet outside to take cold water, and they are awake at once.

By the time they returned to the office, Yang Hui had already eaten. Yang Yue greeted these people on the side.

"Come on, the food is all on the table, enough for six people, I went to help you get it early in the morning, and then I will make up the food stamps myself."

It's good to hear that there is something to eat, and it's good to have someone to come. At this time, these adolescent boys also began to think about objects. But it's really difficult in this base.,There aren't many girls who can go to college.,College schools generally don't assign women to the aerospace industry.,Even if there is.,Don't try to take care of it when it's distributed.,Where will it be assigned to the ravine of the southwest.。

So speaking of which, this is also a dedication to youth.