Chapter 428 The aviation industry is gradually taking shape

After all, the European market is a long-term plan. The most important thing for Chang Haonan right now is to handle the several projects at hand.

Fortunately, for him now, helping Liang Shaoxiu complete the overall design of the Air Police 200 is no longer a particularly difficult task.

Although the Air Police 200 project was officially established less than a month ago, the aerodynamic and structural design of this aircraft actually started after Chang Haonan first proposed the plan of transporting an 8 platform with a T-shaped antenna.

At that time, Liang Shaoxiu led the factory-affiliated design office of Factory 182 to promote the project.

Many structural and trim problems have been solved, and what really remains are some key issues that are difficult to solve using traditional tools and methods.

For example, calculation details involving antennas and turboprop engines.

These parts are typical dirty models, that is, models with irregular surface shapes and a large number of bends that make it difficult to parametrically model.

But this is exactly what Chang Haonan and TORCH Multiphysics are good at.

In terms of aerodynamic design alone, the T-shaped antenna used is a relatively simple type. The damage to the aerodynamics of the original aircraft, especially the more difficult-to-handle longitudinal stability, is far less than that of a disc-shaped antenna, and even It is also smaller than a conformal array antenna like Falcon to some extent.

The only hidden danger may be that the larger antenna area along the axis of the body, and the resulting heightened vertical tail and increased ventral fins, cause the entire aircraft to be more affected by cross winds.

In fact, this failure to fundamentally solve the problem may even cause the T-shaped antenna to be unable to be installed on a small platform (because the large area is the advantage of the T-shaped antenna).

Fortunately, although the Yun-8 platform looks terrible everywhere from Chang Haonan's perspective, its 35-ton empty weight is definitely enough. After specially increasing the area of ​​the vertical tail action surface, this antenna looks very exaggerated. In the end, it only resulted in the air police 200's wind requirements being reduced by about 2m/s during takeoff and landing.

About three-quarters wind.

Quite acceptable.

In the supercomputer operation room of Beihang University, Wang Xiaomo stood next to Chang Haonan, looking at the 3D model on the screen in front of him and the simulation calculation results flashing line by line, and said with some emotion:

"Even a year ago, it was hard for me to imagine that comrades in the aviation system could come up with a new aircraft in less than half a year..."

"Is this... on the one hand, the platform itself is ready-made, and on the other hand, the antenna provided by you is more friendly to our work, so the design is not difficult."

Chang Haonan said and hit the Enter key to save the data and model together.

Not that he was complimenting the other person.

The high-performance radar design and packaging solution provided by Wang Xiaomo ensures that the antenna itself is relatively lightweight, which indeed saves a lot of structural design work for the aging Y8 platform.

Although the Y-8 Category III platform has a maximum load capacity of 20 tons on paper, any transport aircraft, especially tactical transport aircraft and passenger aircraft, are mainly designed to consider loading cargo evenly throughout the cargo warehouse, rather than large items. Concentrated load - that is a problem that An124/C5 or at least An22 will consider.

If the weight of the antenna itself is too large, additional reinforcements will be needed to the structure of the Yun-8. In that case, if a single move affects the whole body, there will be too many problems involved. Even Chang Haonan cannot do it in a short time. solve.

The current transformation mainly only needs to consider aerodynamic changes, and the difficulty is much lower.

This is the beginning of a virtuous cycle.

It is true that the amount of water a barrel can hold depends on the length of the shortest plank.

But if the length of the other boards is okay, or even slightly exceeded, then you can still pack more by tilting the barrel in a direction without short boards.

The Air Police 200 in front of us, which is almost completely different from its previous life, uses the advantages of radar antenna design to make up for the shortcomings of the Y-8 as a carrier aircraft to a certain extent.

Although it is definitely not as good as directly changing to a reliable platform, it is not bad at the moment when I am in a hurry to use it.

Liang Shaoxiu, standing behind Chang Haonan, pushed up his glasses:

"He is a regular worker after all... If we leave it to our factory, just these few minor problems may delay it for a year or two. If the project schedule is delayed, then I will be guilty."

"Gong Liang, don't belittle yourself too much."

Chang Haonan turned around and signaled that the other party could start packaging the data files, while comforting:

"When it comes to engineering, it's better to focus on a step-by-step approach. With this experience, you will become more proficient when doing other projects in the future. After all, the 182 Factory Design Office was just a small unit responsible for copying models before, and now it can gradually assume the responsibility. When it comes to design tasks, the progress is already very fast.”

Liang Shaoxiu sat in front of the computer and began to process the stored project files, and then sighed:

"I'm still a little scared..."

"Seeing that other brother units are making rapid progress one by one, third-generation aircraft, passenger aircraft, and helicopters are becoming popular. Even Guihang, which has always been a close friend of us, recently launched a new model of trainer aircraft. A few days ago A comrade from our factory went on a business trip to build a city, and I heard that they are almost finished building the front fuselage."

Chang Haonan originally didn't want to say that Guihang's trainer aircraft was also his own handiwork to some extent, but when he heard the last sentence, he almost subconsciously said:

"Are they progressing so quickly?"

You must know that Sun Huizhong only went back last month.

Of course he knows that in the last life, Guizhou Airlines also set a speed record in the process of producing FTC2000G - 9 months from design to first flight, and 4 months from start of construction to first flight.

The prototype production progress is broadcast live on the public account almost every day.

But when you really feel it intuitively, it's quite shocking.

This is a new airplane.

And that’s Guihang, Yunma Factory.

It is the place with the worst conditions in the national aviation system.

To be able to reach the point where the front fuselage is almost off the production line in one month is not an exaggeration to say it is a miracle.

"It's really fast..."

Liang Shaoxiu just said half a sentence before he realized:

"Wait a minute, Chang Gong, do you also know about this training aircraft project?"

"Uh……"

This question made Chang Haonan speechless for a moment:

"It would be better to say that I took the lead in entrusting this model to them. It is nominally a technical verification and project support for Project No. 10."

"..."

"..."

Wang Xiaomo and Liang Shaoxiu looked at Chang Haonan almost at the same time, showing uncomfortable expressions on their faces.

How come you are everywhere...

After a while, Liang Shaoxiu spoke again and explained:

"I heard that the Yunma Factory received an allocation and paid the salary for the first half of the year, and there was no mention of being laid off, so all the employees took the initiative to work three shifts, and had food and accommodation in the factory. They had no days. Worked day and night for a month.”

"In addition, Qian Province also intends to support this province's only high-end manufacturing industry, so the provincial party committee personally takes charge to provide logistical support. In short, the battle is quite exaggerated..."

That's reasonable.

After all, I am afraid of comparison in everything.

Surrounded by the tragic situation of laying off employees, relocating the entire factory, and even going bankrupt, I not only have a stable job but can even pay wages, but it would be a life-threatening situation for anyone else.

The project files in the computer are actually not very big, but due to the file transfer speed of this era, the progress bar only jumped about two bars while the few people were chatting.

There was another few minutes of silence.

"Regular worker."

Finally, it was Liang Shaoxiu who broke the silence:

"Do you think there is a chance for the Air Police 200 to build a full prototype before October 99?"

Speaking of this time point, it is obvious that he has an idea.

According to the requirements of Project 9910, the military parade does not need to be truly finalized. In fact, each military parade has a lot of equipment that is still in the prototype stage.

But you must at least ensure that the technology is mature.

Especially aviation units.

If the ground equipment fails, there will be a backup, and it is great but it will be a personal loss. If the plane fails, it will be a big deal...

"If you ask me, it's not hopeless."

Chang Haonan touched his chin and thought for a while, then added:

"I mean hopefully finalized."