Chapter 775 Commemorative Medal

There is no need to elaborate on the testing process. The first Qinshan engine has been running for 600 hours. Although there were various minor problems along the way, they were all solved one by one.

Now the first engine is being disassembled, all parts are thoroughly inspected, and then evaluated.

The original engine life of the Su-27 is 900 hours, the first overhaul time is 300 hours, and then two overhauls are completed.

Later, after our country introduced it, the engine life was successfully extended to 1500 hours, and the first overhaul time was 500 hours.

According to the earliest engine production standard of Fei Xiong at that time, if the life can reach 50 hours, it can be mass-produced. The early M88 engine of Rafale was also mass-produced after 50 hours.

This is mainly related to the average combat life of aircraft during the war. When Liu Hai traveled through time, the minimum standard for engine life was 4000 hours.

Liu Hai originally wanted to set the first overhaul time of the Qinshan engine to 1000 hours, but thought it would be better not to be too conspicuous, so he set it to 600 hours, and then overhauled the parts for comprehensive inspection and evaluation.

Setting a thousand hours by yourself and having a service life of 1,000 hours after inspection are two different concepts.

Setting 1,000 hours by yourself feels a bit too advanced, so be conservative.

As for the first stable operation of 600 hours, it is already the world's leading engine level.

In 2020, some engines have reached a full life of more than 6,000 hours.

Liu Hai estimates that his engine can also reach a full life of 3,000 hours.

The long life of the engine behind is actually related to various aspects of control.

The full electronic system behind can grasp the performance and temperature of each part of the engine.

Adjust the entire system in time, such as the amount of fuel injection and other things.

Keep the engine in a good state at all times, so the thrust of the engine behind is getting higher and higher, and the service life is getting longer and longer.

After all, the material will greatly reduce its life after exceeding a certain high temperature for a certain period of time.

Of course, there are certain factors in the material.

Soon Sun Aiguo also came, and the deputy director in charge of military industry also came.

To be precise, this was not the first test. Liu Hai stared at a notebook, which was filled with data about the various contents of the test.

These are all procedural things, and Sun Aiguo also knows it.

Everyone at the scene was a little nervous.

It was already one o'clock in the afternoon, but no one was worried about eating because the test was about to be completed.

Finally, at half past one, the person in charge of the test announced that the test data had completely met the factory standards.

At this moment, everyone applauded. Although this was not the first engine, everyone knew that the plane was waiting for this thing.

"This is good news. It delayed everyone's meal time. Everyone hurry up and eat." Liu Hai felt hungry.

"When will the assembly start?" Sun Aiguo asked.

"The assembly will start in a while. The workers who hoisted the engine have been waiting for a long time." Liu Hai said.

"If everything goes well, we can finish hoisting the two engines today." Liu Hai did not say that the first engine shipped from the factory would be installed first.

This is not possible. On the one hand, the assembly process does not allow it. On the other hand, the weight of an engine will cause the internal structure to change if it is hung on one side for a long time. No one can explain this situation clearly.

So the two engines are installed together when hoisting.

In this regard, Liu Hai has learned from the design experience of some fighter jets on aircraft carriers.

Liu Hai had a meal here. The engine has been packed and sent to the hoisting workshop.

Although there is not much distance between the two, this must be done.

This is a responsibility issue from one department to another. Who dares to say that this is not packed, and who will be responsible for the problem during transportation.

Liu Hai, Sun Aiguo and others put on new work clothes again, and everyone ate a little at noon.

These tasks of hoisting the engine have been simulated and trained many times.

All the staff looked at the two engines with shining eyes, and the person in charge of assembly command also took a deep breath and issued an order.

One engine was placed on a special trolley.

The trolley directly pushed the engine under the aircraft and then lifted it up.

Because it was the first actual operation, it was a little more complicated. The engine was transported to the right place and checked before continuing to lift the engine. After the engine was lifted to the right place, it had to be checked again, and then the next step was taken.

The same is true for connecting various pipelines.

One person operates, one person checks, one person supervises, and one person is responsible for registration.

Who operates this project? Who checks? And who supervises?

Although the process is a bit complicated, it is the first time to actually operate it.

Of course, when it comes to later maintenance, most of them will follow this, because an engine is not cheap.

Of course, there is no need to do this in an emergency, and it is none of Liu Hai’s business how their ground staff will be trained later.

Because the actual training may be somewhat different from the current operation.

However, in Liu Hai’s concept, it is like now preferring to wait one more minute instead of rushing this minute, because if you rush this minute, no one knows what will happen.

There is no need to have a time-shortening competition to see who is the fastest, because if this thing really has problems, it will be a big trouble.

Liu Hai and Sun Aiguo did not intervene in anything and let the people on the scene operate it themselves.

All the process steps were completed and the installation was completed.

"You can't catch up with the news when you go home, but you can watch TV series." When the assembly was completed, Sun Aiguo saw Liu Hai signed, looked at the time and said with a smile.

"Then I'll get off work." Liu Hai smiled and said that there must be more than one person to witness the appearance of the new generation of fighter jets tomorrow and conduct ground tests.

"Then I'll get off work." Sun Aiguo also nodded.

Liu Hai was a little nervous and excited. He was a test for himself, and tomorrow would be the time to get the results.

I was so excited that I couldn't sleep at night. I cooked several dishes with my junior sister. Liu Hai was energetic at work the next day, but my junior sister was not energetic. She found an excuse to sleep all morning at work. The main reason was that her children were on vacation and she was embarrassed to sleep at home.

There were more people coming the next day, and the main leaders came. After all, it was our country's new generation of fighter jets.

"Liu Gong, we meet again." When the main leader came, Liu Hai and his men were waiting. The main leader greeted Sun Aiguo first, and then went straight to Liu Hai.

"Hello, leader." Liu Hai shook hands with a smile.

"This is your territory, you do your job, we are just spectators." The main leader then spoke. In fact, this sentence was also said to other leaders, no matter what happened, just shut up.

As the factory gate slowly opened to both sides, the twin-engine heavy fighter J-10 officially debuted.

Of course, at this time, the fighters were all yellow-skinned, that is, a layer of material was applied to the outside of the fuselage to protect the fuselage, because during flight testing, it is inevitable that the fuselage will be contaminated.

When the paint is applied later, the surface of the aircraft can be polished before the paint is applied.

In addition, through the wear of this material on the surface of the aircraft, it can also be known where the wear is the most serious.

Because when the aircraft is flying, there is always a place that bears the greatest resistance.

Many leaders saw the appearance of this aircraft for the first time, especially the high arched back.

"The pilot of this fighter must have a good field of vision!"

"That's for sure."

"You can see it from front to back, left to right." Many leaders whispered when they saw this fighter.

"Twin-engine heavy fighter, wow!"

"It is said that the combat radius can reach 1,600 kilometers."

"1,600 kilometers is enough, enough!"

The combat radius of a fighter jet can be divided into many situations.

There is the combat radius under the tanker, and the combat radius under the support of the auxiliary fuel tank.

In addition, it also depends on the ammunition load. Generally, it will not be fully loaded during training, because a fully loaded fighter jet is very dangerous.

Especially in terms of ammunition, some ammunition may have problems during landing.

Generally, when flying, it is the same as a civil airliner, adding a safe amount of fuel to the required fuel consumption.

And most fighter jets are simulated ammunition training.

Although the weather in Kyoto today is cold and windy, everyone present is excited.

On the one hand, this fighter jet itself brings surprises to everyone, and on the other hand, this fighter jet is made by Liu Hai.

If other factories make fighter jets, the leaders will not have such good confidence, because they may not have excellent designs.

But Comrade Liu Hai is different. The actual objects he manufactures are often better than the designs.

Although the wind was cold, the sun rose as usual. Today was a rare sunny day. The plane moved to the runway in the first ray of sunshine in the morning.

Except for the fuel, everything in the plane was filled.

Fuel was added by a vehicle, because the amount of fuel added in the ground taxiing test was different according to the test content.

Liu Hai designed a two-seat, two-engine heavy fighter. In history, we imported single-seat in the early days, and then introduced two-seat.

The two pilots climbed onto the plane and sat in the cockpit according to the process.

The two pilots also had a notebook in their hands and followed the steps on the notebook.

At this time, the leaders and Liu Hai and others had already arrived at the warm tower, where they could look down and see the yellow fighter on the runway.

The tower here can also command the aircraft to land, but most of them are used for flight tests and aircraft factory tests.

The tower was replaced with a professional test commander, and there was also a notebook in front of him.

Both parties followed the steps on the notebook and went step by step.

After one engine of the fighter was ignited, the pilot reported all the engine data, and then started the second engine under the command of the tower.

After the two engines were ignited, the test pilot reported various data of the two engines.

Then, under the command of the tower, the fighter began to taxi on the runway, which had been cleared long ago.

When the fighter taxied a circle according to the predetermined route, of course it was slow at the beginning, and returned to the starting point.

Warm applause rang out in the tower.

"Congratulations, congratulations!" The main leader said while clapping his hands.

"This is the joint effort of all of us." Sun Aiguo also said modestly.

The ground test of the fighter is even more complicated because this fighter uses the fly-by-wire mode.

In the first ground taxiing just now, no extra actions were made. After a preliminary inspection, the second ground taxiing was immediately started after refueling.

This time, the fighter ran two laps and began to consciously increase the throttle.

The two test pilots found that the view of this fighter was too good when they sat in the fighter. It was like sitting on the back of the plane, which was completely different from other fighters.

"This view is simply invincible, plus the bubble-shaped cockpit." It made the two test pilots feel that it was so comfortable to see the scenery in the plane for the first time, although everything outside was withered now.

The test pilots have tested many aircraft, not to mention civil airliners, and the field of view is very narrow.

Don't mention the previous fighters. Compared with the field of view of this fighter, it is a younger brother.

And the pilots can see the various states of their own aircraft, such as wings and tail.

After the three ground tests were completed, it was almost noon, and everyone took photos together.

Of course, the fighter's first flight has yet to be finalized, which still needs time.

Liu Hai got another commemorative medal today, and Liu Hai will not participate in the subsequent tests, because he just follows the process and comes step by step.

It can be said to be quite boring, testing over and over again.

However, I must go when the ground test completes the first flight, but it is expected to take at least one month. During this period, the main purpose is to test the performance of the aircraft in all aspects, as well as control, etc., especially the fly-by-wire control program.

Liu Hai had a holiday in the afternoon. This year is considered a relatively late holiday. Of course, other people who participated in the ground test of the aircraft can't think of taking a holiday.

After a certain period of ground testing of the aircraft, the entire aircraft must be inspected and repaired as a whole.

The news media did not report this matter because it is only a ground test now.

Moreover, no outside personnel can see the internal test site of the motorcycle factory, unless someone can see it every day when the aircraft flies in the future.

"How is it?" After returning home in the evening, the junior sister asked.

"It's a success for the time being. Please keep this for me." Liu Hai took out today's commemorative badge.

The junior sister was so happy to see Liu Hai's commemorative badge that she couldn't close her mouth. She kissed Liu Hai and took the commemorative badge to the study.

The junior sister specially found a place to put Liu Hai's commemorative badges. Looking at so many commemorative badges, the junior sister admired him more in her heart. She thought of the first time she was also because of an aircraft test, and she knew that the senior brother was so capable.

My junior sister participated as a rescue worker that time, just like today's fighter ground test, there are many people on standby, including the fire brigade, ambulance doctors, etc. These people are silently on standby. Of course, there are more people, such as the Air Force and civil airliner flight routes, to prevent anyone from snooping into our secrets.