Chapter 320 Ground Test Acceptance, and the General Armament Department

After determining the crux of the problem, the supporting manufacturers quickly received relevant instructions to update the product process. At the same time, they were sent the set of drawings drawn by Chang Haonan.

Since there was no need to make any improvements to the workpiece itself, just three days later, several new spherical one-way valves were delivered to Factory 132, which had disassembled the aircraft and was conducting a comprehensive inspection of the aircraft cavity.

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

Thanks to the upgraded new testing equipment, the foreign objects detected by Factory 132 from various deep holes and narrow cavities include but are not limited to broken rivets, bolts and nuts, metal shavings...

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

Moreover, considering that all aviation industry system manufacturers use the same old processing and quality inspection standards, I am afraid that the situation of several other brother units is not much different...

In the past, those second-generation machines were relatively rough, with low craftsmanship and quality requirements, so the problem might not be big.

Now that everyone is busy switching to the production of new generation combat or auxiliary aircraft, it is unacceptable to continue like this.

So the "Quality Culture Month" activity of Factory 132 was quickly extended to the entire system...

Putting aside this movement that will have a profound impact on the future development of the aviation industry, for the Project 10 project team, the next core task is to restart the previously interrupted engine operation.

Prototype No. 1001 was once again pulled out of the assembly workshop and delivered to the test workshop of the flight test station.

It’s still the same work station and the same preparation process.

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 person here, so he is naturally familiar with these processes.

Except for some parts that must be signed by the relevant person in charge of the 611 Office, he can direct many contents.

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

Just like last year in Shengjing.

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

"Are you using the same engine this time?"

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

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

The latter smacked his lips and replied with trepidation,

"It's really scary... The blades of the AL31FN engine actually have a relatively high tolerance to foreign objects. Without your system, even if the ground test car is completed, the engine has suffered irreversible damage, and there is a high probability that it can still continue. Persevere even though you are sick. If there is no problem with the data on the surface, we may not dismantle the aircraft for inspection. If the prototype aircraft comes into the sky with such hidden problems..."

This is a cognitive problem that will inevitably be 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...

This type of upgrade is no longer entirely a quantitative change brought about by technological progress, but involves completely new areas that have never been explored in the past. It is normal for some mistakes to occur and even some costs to be paid.

In the original timeline, this hidden danger was eventually discovered by Lin Hui, who volunteered to get into the air intake to inspect, and was resolved at the cost of scrapping two AL31FN engines.

But now with the help of Chang Haonan, Project No. 10 did not cause too serious losses in the same place.

The saving of two engines is secondary. More importantly, it is conservatively estimated that the first flight node will be advanced by at least half a year as a result.

"That's good. In this way, the progress of Unit 1003 will not be affected. After the first flight, the progress can be accelerated..."

While the two were talking, the engine of Unit 1001 had started successfully again and was running at idle speed.

10%...20%...30%...

Following Zhou Ziquan's command, the engine speed increased steadily, and soon reached the previous threshold of 60%.

Zhou Ziquan, holding the walkie-talkie in his hand, took a deep breath.

Although intellectually speaking, the problems that caused the failure of the previous experiment have been completely eliminated, there is still a bit of a psychological shadow in this place.

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

In mid-June, the temperature in Chengdu was already quite high. Everyone was wearing the required long-sleeved work clothes and crowded into a control room that didn't even have air conditioning. The environment was really bad.

"The speed increases by 70%!"

There wasn't much nervousness that could be heard in Zhou Ziquan's voice.

As a test commander, he must be a good "Dinghai Shenzhen".

On the screen of the data recording computer, the engine speed was stable at around 70%.

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

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

The subsequent part is naturally a matter of course.

"The speed increases by 100%!"

When the engine finally reached full power and ran smoothly for five minutes according to test standards, the entire control room finally erupted in cheers.

Turning it on will not further increase the speed, but only injects fuel into the high-temperature gas in the afterburner behind the turbine for supplementary combustion to increase the gas flow rate. Therefore, the engine startup test of the prototype is completed when the speed reaches 100%. .

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

The roar in the workshop outside gradually stopped.

As the engine speed and thrust return to zero, the power supply to the entire machine is released, which also means that this test is officially over.

Song Wencong, who finally had a smile on his face, picked up a loudspeaker from the side and shouted loudly at the scene:

"Now, I announce that the J-10 aircraft engine start test was a complete success!"

A huge crowd quickly surrounded Chang Haonan, and then...

I don’t know who took the lead, but in short, he was lifted up and then thrown into the air...

After some celebrations, Chang Haonan, who finally broke away from the crowd, straightened his messy clothes and found Song Wencong and Yang Wei who had already gathered together to analyze the data.

"Once the ground test is completed, can the preparations for the first flight and the setting of the estimated timetable be put on the agenda?"

It goes without saying that the significance of the J-10 to China's aviation industry is no less important than the first "Type 40" fighter that rolled off the production line 56 years ago. Therefore, Chang Haonan is naturally looking forward to sending the No. 1001 prototype into the sky as soon as possible.

"The progress of the flight control upgrade here is relatively optimistic. The active stability control system written by Chang Gong uses very sophisticated mathematical principles, so the control idea is not too complicated and there are no particularly difficult parts to handle. It is expected that by the end of this month, It will be done by the beginning of next month at the latest.”

Needless to say, Yang Wei's ability in flight control is difficult to catch up with even Chang Haonan now without cheating.

Later, Song Wenchong also raised his head and added:

"Well, the No. 02 ground verification machine has been completed. I contacted the comrades from the Strength Institute two days ago. They will rush over from Haojing to complete the ground vibration test and static test of the whole machine, and then pass the National Defense Science and Technology After acceptance by the Working Committee and the General Equipment Department, preparations for the first flight can begin.”

"This process will not take too long. According to my experience, if it goes well, it will be expected to be from August to September."

For the people of China Airlines of his generation, it is a surprise that there are no surprises in the ground test, so the current efficiency can definitely be regarded as a surprise.

"General Armament Department?"

Chang Haonan caught a noun from the answer just now.

When we were working on the August 3rd Project, the only party responsible for accepting these processes was the Science and Technology Commission.

In his impression, the General Armament Department at this time was still a part of the General Staff Department, so work including the acceptance of key military projects was carried out by the Chief of General Staff. This position was not specifically responsible for military technology, so Reviews are generally only conducted during finalization and delivery to the troops.

The independent General Armament Department should not appear for another two years.

"Yes, the newly established department of the military in April this year is responsible for the research, development, production, and use of weapons and equipment in the entire army. In other words, all kinds of things used in war, except clothes, hats, shoes, and socks, are all They take care of it.”

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

"Speaking of which, the higher-ups have actually had the idea of ​​setting up such an organization for a long time, but the quick action is largely due to you."

"Clam?"

Chang Haonan's head was filled with questions.

He asked himself that he had not had much direct interaction with the military system since his rebirth, so how could this be related to him?

"Originally, Director Ding Gaohengding should have resigned from the Science and Technology Commission at the end of last year, but because of you, the superiors believed that the Science and Technology Commission is currently in a stage of rapid development and change, and it is not suitable for a sudden change of generals, so even the transfer order was not The Minister Cao Gangchun who got it suddenly had no place to go, and his original position was already occupied by someone else. In the end, in order to solve this personnel problem, the General Armament Department, which had been discussed for two years but was still in the process of being established, was simply replaced. It's been pulled..."