said that he let himself come, to help find the reason, although Qin Feng is a test pilot, but Qin Feng has extraordinary talent, his intuition is simply innate, and his sensitivity to machinery is also natural.

So, when he came to find him, he might really be able to help.

But now, they have all been found, and this reason is very common.

The engine is very hot, the internal parts have a high temperature of thousands of degrees, the outer shell also has hundreds of degrees, and the problem of overheating of the rear fuselage has plagued the J-7 for a long time.

And now, the J-8 is twin-engine, and the problem of overheating of the rear fuselage is also serious.

At the same time, the engine is rotating, since it rotates, it must have lubricating oil, there are various pipes outside, once the pipeline is broken, the lubricating oil drips to the shell of the engine, it will definitely cause a fire immediately, and the fire will burn to the aluminum alloy shell outside, and the aluminum alloy will be like wood, helping to burn, this fire, naturally this will come down.

The cause has been found, but is it not easy to solve it?

Which tube is broken, why not replace it?

Do you still need to look for me?

I'm afraid that with this name, you want to leave me here, hmph, I really don't want to stay here, thinking that the cannon can achieve hot-wire aiming, Qin Feng's heart is hot, and he can't wait to fly to such a plane immediately.

It's cool to fire a cannon in the sky like that.

After Qin Feng finished saying this, Mr. Gu's face showed solemnity: "This is just the direct reason, but why this pipe will break, we haven't found the reason yet." ”

As soon as Mr. Gu said this, Qin Feng also froze the smile on his face: "Just change the pipe, is there any more problem?" ”

Qin Feng had already thought of something, and it might be very troublesome to find this reason.

"No, we have already done the test, there is no problem with the pipe, even if it has burned out, we test the remaining oil pipe, the pressure it can withstand is much higher than the actual pressure, it should not be broken."

This fault is very evil.

If the pipe collapses, just replace it, but if it is replaced, what if it is still like this? One has already been burned, what if you can't find the exact reason and the second one burns again?

Don't look at the first one, the country can bear it, if the second one burns down again, I'm afraid someone will be removed from their posts or even go to prison because of this.

This can't be messed up.

The actual reason must be found, why did that pipe burst?

A high-pressure lubricating oil pipe, the inside is a small channel, the outside is thick steel, is quite strong, according to the internal pressure, it should never burst, there must be other problems, this problem can not be found, then you can not go to the next step.

Everyone was dizzy about it.

"However, the J-8 we flew before has never had this kind of problem." Qin Feng said.

This plane, not with a changed engine, or with the original engine, how could there be a problem here?

"That's right, this is also our strangeness, this J-8, like the original, still uses the original turbojet-7 engine, so it should not have such a problem."

If the problem is simple, why are you still looking for it, think of a way for everyone, these days, Mr. Gu has been tortured so much that he can't sleep at night.

Qin Feng also frowned, it was still the original engine, it was clear that the test flight was good, now, how could there be a problem?

Impossible, absolutely impossible, there must be something changed!

"What has changed about our current engine compared to the one we used before?" Qin Feng asked.

If it is exactly the same, if the pipe is blown out, then the quality of the pipe must be not good, and you can rest assured and boldly reassemble a plane to fly.

Engine, has it been altered?

Hearing Qin Feng's question, a technician said: "The hydraulic pump of the hydraulic system has been replaced with a YB-20B pump. ”

It was originally a problem with the hydraulic oil pipe, and now, it is said that the hydraulic pump has been replaced, so do you need to say it?

"Mr. Gu, it must be a problem with this newly replaced hydraulic pump." Qin Feng said.

Hydraulic oil flows in the pipeline, which requires pressure, and this pressure, which is generated by the hydraulic pump, is not a high-tech thing for a long time.

There are many places where hydraulic pumps are used on the plane, the operating system is hydraulically controlled, there must be hydraulic pumps, engine lubrication systems, fuel systems, etc., hydraulic pumps are needed everywhere, there is no technical content, and the pressure is not high anyway.

"We also doubted," Mr. Gu said: "We also got a brand new YB-20B pump from the manufacturer, and through testing, it was found that the pressure of the oil in this pump was completely within the normal range. ”

What has been changed, just follow these to find it, this is a basic idea, if Mr. Gu is really helpless, he didn't think of going to Qin Feng.

If the pipe bursts, it must be under high pressure, but after testing this hydraulic pump, the pressure inside is normal, even if its speed is twice as high, the pipe can withstand it, how can it burst out?

Qin Feng followed Tu Lao and negotiated with the British, he was also very busy, and this introduction project was a key project that the superiors paid attention to.

Now, there's really no way around it.

Qin Feng looked at the pump in Mr. Gu's hand: "Have you changed anything else?" ”

"No, everything else is the same."

"Well, that must be the hell it is!" Qin Feng was sure.

Qin Feng was so sure, and Mr. Gu was also curious: "How do you say it must be its problem." ”

"Elimination method, Mr. Gu, is there anything else besides it? Since it has been replaced, if you don't look for this major accident that has occurred, who else will you look for? ”

Qin Feng said this, it also made sense, Mr. Gu said: "Then what do you say is wrong with it?" ”

Qin Feng shook his head: "I don't know. ”

Everyone suddenly showed a look of disappointment in their eyes, and they thought that this Qin Fenglai could point out some big problems, and after talking for a long time, isn't this in vain?

I thought you were a god.

"I don't know what the problem is, but now, we can imagine that if it was the problem with the hydraulic pump, and it wasn't the oil pipe burst caused by his excessive pressure, what else could have happened? We take all the situations into account, and then we do the experiments in a targeted manner, and that's it. ”

Even if Qin Feng said this, there was distrust in the eyes of everyone present, in addition to the pressure, what else could there be?

"Director Wang, tell us about it." Qin Feng cooperated with many people in the previous test flights, and Director Wang in front of him could be regarded as not knowing each other.

1 second to remember Aishang:. m.