What, the plane leaked oil? Everyone was stunned.

An airplane is composed of tens of thousands of parts, among which there are many hydraulic oil pipes, many fuel pipes, and oil leakage, which can be big or small.

For aircraft, oil leakage is not a big problem many times, the most representative of which is the Blackbird, SR71 reconnaissance aircraft, the shape of this aircraft is quite sci-fi, and it can also fly to more than three times the speed of sound, and at this speed, the effect of thermal expansion and contraction is very obvious, in order not to expand when it is hot, so its skin is made of gaps, which leads to this kind of science fiction reconnaissance aircraft on the ground, is constantly leaking oil, all the way to the sky, with the increase of speed, The oil spill will gradually subside, and when the blackbird becomes a bluebird, it is proud of the whole sky.

However, in many cases, an oil leak can also mean an unexpected situation, for example, if there is an oil leak in the hydraulic system and it ends up with a loss of pressure? If there is an oil leak in the engine part of the aircraft, once it hits a hot place, it may even cause the plane to catch fire!

The first flight is no small matter!

Hearing the report from the scene, everyone abandoned the meeting that was now going on and ran outside.

Now, it's late at night, the winter in Chengdu is cold and gloomy, the cold wind blows to everyone's body, and it's still drizzling outside, no one cares about this, they are running forward quickly, and finally the runway hangar.

"Is the oil leak serious?" Song Lao said to the maintenance staff.

"It's here, we found three drops of oil leaking!" The crew said.

In the position of the skin of the fuselage, it is dripping downward, only three drops of oil, and it does not continue to emerge outward.

This situation is also possible, if it is a mature aircraft, in such a situation, just continue to observe that there is no leakage again, after all, it is no longer leaking, if the observation is a little later, maybe no problems will be found.

But can it be spared like this now?

"Our fighter planes must not have any situation, no matter what suspicion there is, we cannot let it go." Song Lao said: "Open the skin and find the oil leak!" ”

Song Lao's attitude is also the attitude of other people, because of these three drops of oil, everyone is busy again.

Since the middle of World War II, many aircraft have abandoned wood and adopted aluminum alloy structure, aluminum alloy has benefits, high strength, small quality, it is simply born for aviation, however, aluminum alloy also has disadvantages, for example, aluminum alloy welding is quite difficult.

Therefore, for the fighter, the aluminum frame and the outer skin are not welded together, so it is not convenient to repair, it is in the form of riveting, no matter how the aircraft develops, this technology will always exist, not riveting, do you have to rely on glue?

Although it is a rivet, there is a difference, the Soviet plane, it looks quite rough, even if it is the Su-27, the rivets on the outside are clearly visible, this is because theirs are outcropping rivets, the rivets are exposed, and the Western fighters are quite smooth, even if you don't look carefully, after the paint is applied, you can't see the rivet head, this is the countersunk rivet, after the rivet is up, and the skin is flat.

This is not only for the sake of aesthetics, but also to reduce the drag in flight, yes, even the rivets have resistance.

Although the J-10 fighter uses the third uncle's engine, its entire system standards are Western, such as the 1553B data bus, airframe life, etc., and the failed peace model project of the year also has other benefits, for example, let Chinese aircraft designers come into contact with Western industrial system standards, according to theirs!

Now, the technicians are starting to dismantle the skin, and no one says they disagree, just three drops of oil, so forget it? Of course not, this is an attitude, an attitude of excellence, and a professionalism pursued by aviation people!

No doubt can be let go, no matter how small the doubt is!

The oil seeped out of the skin, so if you open the skin, you can find out where it leaked, right?

But when it was taken apart, everyone frowned, there were no hydraulic lines here at all, here is the location of the electronics, why is this oil here?

"The oil is not leaking from here, it is coming from other places, and I suggest that we can stick a piece of paper on it and find traces of the oil leak!" An engineer said.

The oil leaked along the skin, and now that the skin has been disassembled, then as long as you spread a blank sheet of paper on the skin and look at the traces of oil stains, you can touch the melon along the vine.

"That's right, just do it!" While the oil is not dry, you can try it to find out where the bottom leaked from.

The overnight time, just like that, followed by the next day, everyone is continuing to search, can not be blindly disassembled, the current state of the aircraft is the best, blind disassembly of equipment, may lead to unexpected failure of the aircraft, a small loose joint, may cause a big mistake.

Analyze first, judge, and have full confidence before you can do it, just like that, the day has passed again, and the night will continue to look!

No one could sleep at the place where the oil was leaking, and just like that, six days passed, six nights passed, and when dawn came, finally, a technician with red eyes shouted: "Found it, found it, it's the problem here!" ”

A small problem, and it has not been leaked, but now, the source of the problem has finally been found, and everyone's hearts are relieved, and finally found, the next plane, the design here needs to be improved, and this situation can be prevented!

"Alright, let's go to bed." Song Lao said that in the past few days, everyone was extremely tired.

"No, we're going to load the plane up first!"

I was tired, but I had to put the parts back in and restore the plane to its original state, so that I could go back to sleep with peace of mind.

Qin Feng also followed and searched together for six days, and when he saw that the problem was finally solved, he couldn't help but sigh: "Old Song, we have zero tolerance for defects, this plane, we have done the best of it, what else are you worried about?" ”

With our working attitude, the plane will definitely be able to make its first flight without fail!

I have full confidence in our plane!