After confirming that there were no problems with the improved design, Yan Zhongzhong signed his name on the documents confirming the production of two prototypes of the improved turbojet 14 engine.

As mentioned earlier, due to the complexity of the structure of the multi-stage axial compressor, even Chang Haonan could not accurately calculate and simulate a jet engine with a complete structure and no simplified model.

Therefore, the specific performance of this new Vortex 14 reborn in Nirvana will still have to go through a series of tests to know.

The two prototypes, codenamed 010001 and 010002, were produced for high-altitude and air-based tests.

Generally speaking, the time required for this process can be as short as a few months or more than a few years, but fortunately, the overhauled turbojet 14 is still a turbojet 14 after all, although there is no one to be tested, but the test process will definitely be faster than a truly new engine.

"If you count the time......"

Chang Haonan was stunned for a moment, and then realized that he didn't even know what day it was.

Habit is indeed a terrible thing.

Because he has been grabbing his phone to look at the date for more than ten years, he often forgets the specific date, even though he has been reborn for a few months.

Especially in recent times, he has often worked overtime in the windowless computer room, which has made him almost lose the concept of day and night.

Thinking of this, Chang Haonan turned his head, ready to glance at the calendar hanging behind.

At this time, Yao Mengna was standing behind him, and she happened to be casting her eyes here.

So the two looked at each other.

The other party's height was almost the same as his, completely obscuring his vision.

But before Chang Haonan could adjust his position, Yao Mengna lowered her head as if she knew what he wanted to do.

Today is September 13th.

Chang Haonan raced through the basic process of ground and air simulation, and how long each project was expected to take.

"If all goes well, it should be able to catch up......"

He was so focused on thinking that he didn't even notice that he was whispering what was in his mind.

"What's in time?"

Yang Fenghat, who was standing next to him, asked in a somewhat puzzled tone:

"If you're talking about the finalization node, then there are still nearly two years to go, and with the efficiency of you after you join the project, it shouldn't be a problem, so don't worry."

After speaking, he patted Chang Haonan on the shoulder, signaling that he could relax completely.

The stereotype that Yang Fenghata refers to naturally refers to the stereotype of design.

According to the "Procedures for the Development of Conventional Weapons and Equipment" promulgated by the four ministries and commissions in 1995, the development of conventional weapons and equipment is divided into the stage of demonstration, program demonstration, engineering development, design finalization, and production finalization.

Chang Haonan: They are now in the stage of engineering development.

In general, after the finalization of the design, it is possible to start arranging trial production in small batches and equipping the troops.

As for the production finalization, it can only be completed after continuously discovering and solving problems in this process, and it is difficult to give a specific time node.

Considering the production process, sometimes the speed of replacement is very fast.

Therefore, in practice, the small batch production of many weapons and equipment models is not "small" at all, and there will even be a situation where the entire life cycle has been retired from active service but the production has not yet been completed.

So in most cases, when a project reaches the design finalization stage, it can basically be regarded as completed.

The others around him also cast affirmative and approving glances.

If the modification of the wing design only gave him some popularity within the scope of the 601 Institute, then the design modification of the turbojet 14 this time spread the name Chang Haonan almost throughout the entire project team of the 83 Project.

"Uh...... No, it's really not too much of a problem to finalize the design. Chang Haonan shook his head, saying that he was not thinking about this:

"I'm wondering, if the test results of the turbojet-14 are smooth enough, will the J-8-3 be able to catch up with this year's air show?"

That's right, this is the main reason why Chang Haonan has been keeping an eye on the progress of the 83 project from the beginning.

The Xiangzhou Air Show, also known as the China International Aviation and Aerospace Exhibition, will become one of the top four air shows in the world in the future.

But when I first applied for this air show, the core starting point was actually Xiangzhou City, which has a population of just over 900,000, and wanted to apply for the construction of an oversized airport with a runway of 4,000 meters.

There's got to be a reason for that.

As a result, Jinwan International Airport was successfully completed, but it was not officially approved until 1995 that the air show was officially approved.

So much so that the domestic aviation units were almost unprepared for this, and in the end only one J-7MG, that is, the export version of the J-7E, was sent for a flight show, and a J-8IIM, which only made its first flight at the beginning of the year, for ground display.

But even so, Chang Haonan still clearly remembers the excitement and excitement when he and his classmates saw the J-8IIM in the magazine.

After all, this aircraft using Russian-made avionics can launch R27 air-to-air missiles like the Su-27.

Later, when I participated in the work, I learned that the flight show of the J-8IIM was originally arranged, but the left engine of the exhibitor plane stopped in the air during the transfer flight to Xiangzhou, and had to go to Jiangcheng for a forced landing, and finally changed to another plane to temporarily go on the top, and the flight show was naturally canceled.

It was not until the second air show in 1998 that the J-8IIM and the J-7, known as the FBC1, made up for this late performance.

It is also for this reason that in the original timeline, the brightest stars of the first Xiangzhou Air Show were a Su-27 and a Su-30MK on static display.

But this time, things are different after all.

The overhauled J-8-3 and the more stable turbojet 14.

Although there is still no way to completely benchmark the third-generation heavy fighter on the cards, at least it will not be completely dominated by others.

"Airshow?"

Everyone's first thought was basically that Chang Haonan got the wrong time because of long-term continuous work.

When it comes to air shows in this era, the first thing that comes to mind is the Paris Air Show and the Moscow Air Show held in odd-numbered years, and the Farnborough Air Show and Singapore Airshow held in even-numbered years.

The Singapore Airshow is held in February in even-numbered years, and it is impossible to make a mistake about it, but the Farnbrough Airshow in the United Kingdom is held in the first and second weeks of September every year.

"But the Farnborough Airshow was just done two days ago?"

Someone next to him whispered a reminder.

"It's not Farnbrough, I'm talking about ......"

"Is it Xiangzhou?"

It was Yang Fenghata who reacted first.

"Yes, Xiangzhou Air Show."

Chang Haonan nodded and continued:

"Our 83 Project is a 'fighting machine' that has been personally instructed, and if it can be unveiled at our country's own first air show, it will definitely be very exciting."

Hearing this, the eyes of everyone present instantly lit up.

Who wouldn't want their own aircraft to be in the spotlight?

"If I'm not mistaken, the Xiangzhou Air Show should open in early November, which means that there is still ...... time left for us."

"Less than two months."

(End of chapter)