After identifying the crux of the problem, the supporting manufacturers quickly received relevant instructions to update the product process, and at the same time, the set of drawings drawn by Chang Haonan was sent over.

Since no improvements were required to the workpiece itself, just three days later, several new spherical one-way flaps were delivered to Fab 132, which had already disassembled the aircraft and was carrying out a complete inspection of the aircraft cavity.

Although it has been determined that the cause of the failure of this engine test is not inside the body, the results of the whole round of inspection are still quite shocking.

Thanks to the upgraded new testing equipment, the 132 factory has detected foreign objects from various deep holes and narrow cavities, including but not limited to rivet breaks, bolts and nuts, and metal shavings......

In short, although it does not directly affect flight safety, it is definitely not a good thing.

And, considering that all the manufacturing plants of the aviation industry system use the same old set of processing and quality inspection standards, I am afraid that the situation of several other sister units is not much different......

In the past, the old second-generation aircraft themselves were relatively rough, and the process and quality requirements were low, so the problem may not be big.

Now that everyone is busy switching to the production of a new generation of combat or auxiliary aircraft, it will not be possible to continue like this.

As a result, the "Quality Culture Month" activity of Factory 132 was quickly promoted to the entire system......

Leaving aside this far-reaching impact on the future development of the aviation industry, for the No. 10 project team, the next core task is to restart the engine operation that had been interrupted before.

Once again, the prototype 1001 was pulled out of the final assembly hall and delivered to the test shop at the test flight station.

It's still the same as before, and it's still the same as before.

Although Chang Haonan has not been working for a long time, the number of projects he has actually participated in is even comparable to that of Song Wencong, the oldest in the group, so he is naturally familiar with these processes.

Except for some parts that must be signed by the relevant responsible personnel of the 611 Institute, he can direct many contents.

What's more, with the performance of turning the tide during the last test run, both the staff of Factory 132 and the test flight station paid more attention to Chang Haonan's opinions, and even took the initiative to find him to ask for help.

It's like last year in Shengjing.

He can get a higher starting point, but his prestige must be built slowly.

"Is it the same engine used this time?"

Chang Haonan looked at the No. 1001 prototype that was being finalized through the thick windowpane, and asked Yang Wei next to him.

"Yes, last time your surge monitoring system worked in a timely manner, and it was controlled before the engine speed was increased to 70%, so some of the large remnants that were really destructive have not been sucked out, only a small amount of metal debris affected the first two stages of compressors, and after inspection, there was no structural damage, and it can continue to be used."

The latter smacked his lips and replied not without palpitations,

"It's really scary...... The blades of the AL31FN engine have a relatively high tolerance to foreign bodies, and if you don't have that system, even if the test car is done and the engine has been irreversibly damaged, there is a high probability that you can continue to persist with illness. If there is no problem with the data on the surface, we may not have to dismantle the plane for inspection, if the prototype goes to the sky with such a hidden danger......"

This is an inevitable cognitive problem encountered in the process of cross-generation upgrades, such as propeller to jet, subsonic to supersonic, mechanical flight control to fly-by-wire flight control......

Such upgrades are not entirely quantitative changes brought about by technological progress, but involve completely new areas that have never been explored before, and it is normal for some mistakes and even some costs to occur.

In the original timeline, this hidden danger was finally discovered by Lin Hui, who had volunteered to drill into the air intake to inspect it, and was solved at the cost of scrapping two AL31FN engines.

And now, with Chang Haonan's help, Project 10 has not caused too serious damage in the same place.

Saving two engines is still secondary, and more importantly, the first flight node is conservatively estimated to be at least half a year ahead of schedule.

"That's good, in this way, the progress of the 1003 aircraft will not be affected, and after the first flight, the progress can be accelerated......"

While the two were talking, the engine of the No. 1001 machine had been successfully started again, running at idle.

10%…… 20%…… 30%……

With the sound of Zhou Ziquan's command, the engine speed increased steadily, and soon it reached the threshold of the last time - 60%.

Zhou Ziquan, who was holding the walkie-talkie, took a deep breath.

Although intellectually speaking, the problem that caused the failure of the experiment has been completely ruled out, but when it comes to this place, there is still a bit of a psychological shadow.

Chang Haonan, who was not far away, noticed that the other party's forehead was covered with a layer of fine sweat.

In Rongcheng in mid-June, the temperature was already quite high, and everyone wore the prescribed long-sleeved overalls, crowded into the control room without even air conditioning, and the environment was indeed relatively bad.

"RPM up, 70%!"

I couldn't hear too much nervousness in Zhou Ziquan's voice.

As a test commander, he must be a good "Dinghaishen needle".

On the screen of the data logging computer, the engine speed is stabilized at around 70%.

Everything was fine, and the surge monitoring system did not alarm again.

Although it was not yet time to open the champagne, the corners of the mouth of the operator in front of the computer were already unconsciously raised.

The following parts are naturally logical.

"RPM up, 100%!"

When the engine finally reached full power and ran smoothly according to test standards for five minutes, the entire control room finally resounded with earth-shattering cheers.

Turning on does not increase the rotational speed further, but only supplemental combustion of high-temperature gas-injected fuel into the afterburner behind the turbine to increase the gas flow rate, so the prototype's engine start-up test is finished at 100% rpm.

The afterburner test needs to be carried out on a more open runway, which is generally put together with the taxi test before the first flight, which is a later story.

The roar in the workshop outside gradually stopped.

With the speed and thrust of the engine returning to zero, the power supply of the whole machine is lifted, which also means that the test is officially over.

Song Wencong, whose face was finally full of smiles, picked up a loudspeaker from the side and shouted loudly to the scene:

"Now, I announce that the J-10 aircraft engine has started testing and has been a complete success!"

The surging crowd quickly surrounded Chang Haonan's side, and then ......

I don't know who led the head, but in any case, he was lifted up and thrown into the air......

After some celebration, Chang Haonan, who finally broke free from everyone, straightened his messy clothes and found Song Wencong and Yang Wei who had come together to start analyzing the data.

"After the ground test is completed, will the preparations for the first flight and the expected schedule be set on the agenda?"

The significance of J-10 to the Chinese aviation industry naturally goes without saying, no less than the first "Type 56" fighter that rolled off the assembly line 40 years ago, so Chang Haonan is naturally looking forward to being able to personally send the No. 1001 prototype into the sky as soon as possible.

"The progress of the flight control upgrade on my side is relatively optimistic, and the active stability control system written by Chang Gong uses very exquisite mathematical principles, so it is not too complicated from the control idea, and there is no particularly difficult part to deal with, which is expected to be completed at the end of this month and early next month at the latest."

Needless to say, Yang Wei's ability to engage in flight control is needless to say, even if it is Chang Haonan now, it will be difficult to catch up if he does not cheat.

Subsequently, Song Wencong also raised his head and added:

"Well, the No. 02 ground verification machine has been completed, I contacted the comrades of the Strength Institute two days ago, and they will rush over from Hojing to complete the ground vibration test and static test of the whole machine, and then pass the acceptance of the Commission of Science, Technology and Industry for National Defense and the General Armament Department, and then start preparing for the first flight."

"It won't take too long, and in my experience, if it goes well, it's expected to be in August or September."

For his generation of Huaxia Airlines people, it is an accident that there is no accident in the ground test, so the current efficiency is definitely an unexpected joy.

"General Armament Department?"

Chang Haonan caught a noun from the answer just now.

In the past, when the 83 Project was carried out, there was only one acceptance party for these processes in the middle, the Commission of Science and Technology.

In his impression, the General Armament Department of this effort is still a subordinate part of the General Staff, so the work, including the acceptance of key military projects, is carried out by the Chief of the General Staff, and this position is not professionally responsible for military technology, so it is generally only reviewed when it is finalized and delivered to the troops.

It would be another two years before the independent General Armament Department appeared.

"Yes, the newly established department of the military in April this year is responsible for the research and development, production, and use of weapons and equipment for the whole army, in other words, all kinds of things used in the war, except for clothes, hats, shoes and socks, are under their control."

Speaking of this, Song Wencong said in a joking tone:

"Speaking of which, in fact, the idea of establishing such an organization has long been there, but the fact that the action can be so fast is largely due to you."

"Clams?"

Chang Haonan's head was full of question marks.

He asked himself if he hadn't had much direct contact with the military system since he was reborn, so how could this have something to do with him?

"Originally, Director Ding Gaoheng Ding should have retired from the Commission of Science and Technology at the end of last year, but because of Ling, the above believes that the Commission of Science and Technology is currently in the stage of rapid development and change, and it is not suitable for changing generals, so Minister Cao Gangchun, who even got the transfer order, suddenly had nowhere to go, and his original position has been occupied by others, and finally in order to solve this personnel problem, he simply pulled up the General Armament Department that has been discussed for two years, but is still in the process of preparation......"

(End of chapter)