Chapter 428 The aviation industry is gradually taking shape
After all, matters in the European market are long-term plans. The most important thing for Chang Haonan right now is to handle the several projects at hand.
Fortunately, for him today, helping Liang Shaoxiu complete the overall design of the Air Police 200 is no longer a particularly difficult task.
Although it has been less than a month since the Air Police 200 project was officially established, the aerodynamic and structural design of this aircraft actually started after Chang Haonan first proposed the plan of Yun-8 platform plus T-shaped antenna. .
At that time, Liang Shaoxiu led the factory-affiliated design office of Factory 182 to promote it.
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 means.
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 parameterize modeling.
But this is exactly what Chang Haonan and TORCMultiphysics are good at.
As far as the aerodynamic design is concerned, the T-shaped antenna used is a relatively simple type, and the damage to the aerodynamics of the original aircraft, especially the more difficult-to-handle longitudinal stability, is far less than Disk antennas are even somewhat smaller than conformal array antennas like Falcon.
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 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 The seemingly exaggerated antenna ultimately only reduced the wind requirements of the Air Police 200 by about 2m/s during takeoff and landing.
About three-quarters wind.
Quite acceptable.
In the supercomputer operation room of Beijing Hang 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 if I put it aside, 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..."
"Well...on the one hand, the platform itself is ready-made On the other hand, the antenna you provided 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 the model. Come down.
It’s not that he was complimenting the other party.
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, the design of any transport aircraft, especially tactical transport aircraft and passenger aircraft, is mainly to consider loading cargo evenly throughout the cargo warehouse. situation, rather than large concentrated loads - that is an issue that only 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, there will be too many problems involved in affecting the whole body, even for Chang Haonan. It cannot be solved in a short time.
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 is almost completely different from its previous life. It 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:
"It's a regular job 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."< br>
“Gong Liang, don’t belittle yourself too much.”
Chang Haonan turned around and signaled the other party to start packaging the data files, and at the same time comforted:
“In terms of engineering, it’s still outstanding. It’s a step-by-step process. With this experience, you will become more proficient when doing other projects in the future. After all, the 182 Factory Design Office used to be just a small unit responsible for imitation models. Now it is able to gradually take on the design task. It is already very good. The progress is so fast.”
Liang Shaoxiu sat in front of the computer and began to process the saved 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 planes, and helicopters are becoming prosperous. Even Guihang, which has always been a close friend of us, Recently, a new model of training aircraft has been launched. A few days ago, some comrades from our factory went on a business trip to Zhucheng. I heard that they are about to build the front fuselage. "
Chang Haonan didn't want to talk about Guihang. That trainer aircraft was also my own handiwork to a certain extent, but when I heard the last sentence, I almost subconsciously said:
"Are they making progress so fast?"
You must know that Sun Huizhong is I just 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 is quite shocking.
This is a new plane.
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, you also know about this training aircraft project ?”
"Uh..."
This question made Chang Haonan speechless for a moment:
"It's better to say that I took the lead in entrusting this model to them. It is nominally a technical verification and project for Project No. 10. Matching.”
“…”
“…”
Wang Xiaomo and Liang Shaoxiu looked at Chang Haonan almost at the same time, showing uncomfortable expressions on their faces.
Why are you everywhere...
After a while, Liang Shaoxiu opened his mouth again and explained:
“I heard that it was obtained from Yunma Factory A sum of money was allocated to pay the wages for the first half of the year, and there was no mention of being laid off, so all employees took the initiative to work three shifts, with food and accommodation in the factory, and 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, during the time when several people were chatting, the progress bar only jumped about two spaces.
A few more minutes of silence.
"Chang Gong."
In the end, it was Liang Shaoxiu who broke the silence:
"Do you think Air Police 200 has a chance to build a full prototype before October 1999?"< br>
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, we can have a backup, and it is great but it means losing a person. If the plane fails, it will be a big deal...
"If you ask me to say it, it is not hopeless."
Chang Haonan touched his chin and thought for a while, then added:
"I mean hopefully finalized."
(End of Chapter)