Why is it that when it is dry docking, it can be docked steadily, and when it comes to wet docking, there is such an accident?

The first time, maybe it was an accident, so, after coming down, the ground staff didn't say a word, and installed a new oil pipe again, which was originally added later, and it was easy to disassemble, and after the installation, there was enough time to fly another take-off and landing.

This noon, Lao Chang didn't even eat a few bites, he has been thinking about this matter, for a long time, he has been flying, this probe rod may have been tired of metal, and then broken? The probe has been dismantled and sent back for study, if that's the case, then it's easy to say, if not, it may mean that you are in more trouble.

The new probe was installed, with a metallic luster, because it was not painted, so it looked a little dazzling, Lao Chang frowned, or decided to postpone the takeoff, first let people paint the metal probe with color, otherwise, the sky is easy to dazzle, how to complete the docking.

Half an hour later, the new air tubing with the smell of paint took off, and as last time, he continued to slowly approach, closer, and when he, as he had done yesterday, pushed the fighter plane and prepared for the final operation, the familiar crisp sound reached his plane again.

The brand-new oil pipe that had just been erected was broken again!

The first time was accidental, the second time, that is inevitable, everyone was still immersed in the joy of yesterday, and wanted to make persistent efforts to complete the wet docking, as a sign that the Air Force has the ability to refuel in the air, who would have thought that such a situation has appeared now, it is really too discouraged!

Lao Chang's fighter plane returned, and when he came down, he saw Qin Feng.

Qin Feng had already completed his test flight task, and when he heard that something was wrong with Lao Chang's side, he ran over, and now, looking at the broken probe, Lao Chang had a wry smile on his face: "Now, the problem is a bit big." ”

"Whatever the problem is, we have to solve it." Qin Feng said: "The chief teacher, they are all waiting." ”

Entering the conference room, the expressions on everyone's faces were very heavy, and now, they are facing a new problem, the last problem in the air refueling test flight, which was originally thought to be very simple, has now become a hard nut to bite, and it must be taken down!

"I think that the breakage of this refueling probe must be due to the lack of rigidity, so we need to increase its strength and use stronger materials to make this probe." It was the deputy chief engineer of the test flight who spoke this time, and the reason he mentioned was also a reason that everyone could easily think of.

Why did it break? Because its strength is not enough, this can be said to be the most direct reason, because the strength is not enough, so when it is docked, it breaks.

"So, why didn't we have this kind of problem when we were doing the docking?" Questions were immediately raised.

Yesterday was fine.,Today I changed my temper.,This device.,It's really hard to figure out the character.。

"Because when we were flying yesterday, it was a dry docking, and there was no oil in the refueling pipe, so it was relatively soft, and when we docked up, it was like hitting cotton, and this time, the refueling hose was all fuel, and the fuel was liquid, but with the outer hose, it made this device hard, so that the second time, it was like hitting the wall, and there was no buffer."

The reason put forward by the deputy chief engineer of the test flight is also reasonable, and everyone nodded again and again, yes, then, we should increase the strength of the probe of this aerial refueling tube!

"I think it's not just the strength of the gas pipe." Chang, who had been pondering all the time, finally spoke.

"It also has something to do with our operation, I think, these two times, my operation is a bit reckless."

Reckless operation? I have always been cautious, only when I docked at the end, the speed was faster, because if the speed was not fast, the refueling tapered sleeve would fly!

Yesterday I used this as a successful operation, but today, it has changed? Qin Feng thought quickly in his mind, and suddenly, he figured it out, that's right, sure enough, there is a specialization in the art industry, and he has the most experience in the test flight of refueling in the air, and he has already thought about this problem clearly.

The last time the conical sleeve flew away, it was because there was no fuel in the fuel pipe, so when the plane went up, the disturbance of the air flow caused the conical sleeve to fly away, and if you want to dock successfully, you need to be faster.

But now, there is already fuel in it, the situation is different, although the conical sleeve is still so light, but the back of the oil pipe has become heavier, so, at this time, slightly reduce the final operating amplitude, the tapered sleeve will not fly too fast, can dock successfully.

This is equivalent to hitting it, the lower the speed, the less the force of the impact.

"It seems that we think about these two aspects." The chief engineer spoke: "On the one hand, we increase the strength of this refueling pipe, and on the other hand, I reduce the speed difference between our docking. ”

In fact, the speed difference in the last one is not large, and it is almost the same as in the information given abroad.

However, the foreign air refueling pipe is long, so the buffer is better, and the air refueling pipe of the own side is relatively short, so the rigidity of the docking is greater, when it is filled with fuel, it is simply a bamboo stick, directly on it, of course, it is not possible.

At this time, it should be slower, of course, than at the beginning, it is still a little faster, this degree is too difficult to grasp, to fly a fighter plane of more than ten tons and twenty tons to the current level, it is the same as using an excavator to open a beer bottle or something.

It is very difficult and requires careful control of the fighter, but now there is no other choice, it must be done, and next time, the test flight will be more careful!

Qin Feng didn't give an opinion, he felt that the old man's opinion was very reasonable, since this was the case, then follow this plan and try again.

However, it takes time to modify the air refueling pipe with higher strength, and the delay of these days is enough to miss the precious test flight window, and for the next period of time, everyone can only wait for the weather to improve on the ground.

The days of waiting are destined to be torturous, and I often come to the airport alone, looking at the J-8 fighter on the tarmac, looking at the brand-new and improved air refueling tube above, and looking forward to the next flight.