The Military-industrial Scientific Research System of the Academic Master Chapter 1010

Chapter 1010 Three-dimensional reconstruction of the Air Police 2000 platform

During the month when Chang Haonan himself was busy establishing the QC300 project, Torch Group was also dealing with the aftermath of the Numerical Algorithms and Computational Science Conference.

First of all, it is natural to officially release three different versions of TORCH Multiphysics 2.0 software—

In addition to the previously existing professional version and professional enhanced version, Torch Group has also launched the "pre-sale" of the Sugon version of the software in advance at the strong request of many users.

That is the version bundled with Sugon 3000T.

In fact, when Chang Haonan announced the Dawn Edition at the opening ceremony of the conference, he didn't think that many people would actually buy it.

After all, although Sugon 3000T is a streamlined supercomputer, it is still a behemoth with 10 sets of cabinets and a weight of 5 tons.

For most small and medium-sized users, as well as foreign users, it is not convenient to purchase such a set of things.

In addition, as China's first supercomputer that has truly reached the international mainstream level, it has very strict performance requirements for components. At the same time, Sugon Group, as the current leader in the domestic semiconductor industry, needs to increase the localization rate of its products as much as possible.

And high performance means difficult production.

For the nascent domestic semiconductor industry, even if it uses the same imported equipment and raw materials as others, the yield rate is still not optimistic.

As a result, after the localization rate increased, instead of falling, the cost actually increased.

Of course, this problem is still secondary.

After all, Torch Group's products have never focused on cost-effectiveness, and the core user base doesn't care much about price.

The key is lead time.

In the Dawn 1000 era, Jinghang University inadvertently set off a wave of universities buying supercomputers and servers.

However, at that time, the mainstream was still importing foreign products, and Shuguang Group only got some soup.

Even so, it still helped Shuguang Group, which had suffered huge losses for many years, turn losses into profits.

Avoiding being sold to the Dream Group is second to none. More importantly, for the first time, it has opened up a complete circuit of product research and development - market launch - revenue generation - continued investment in product research and development.

In the Dawn 2000 era, due to the influence of the Qinghai-Tibet Railway and the West-East Gas Transmission Project, this craze was inherited by many central enterprises in monopolized industries.

Shuguang Group has also accumulated a considerable number of users in this process.

As a result, before the Sugon 3000 series supercomputer passed the project acceptance, more than 30 users, including Torch Group and Aerospace Power Group, had placed orders for more than 50 units.

It has not been delivered yet.

Therefore, the delivery time of the Sugon 2000T ordered now will not be until the end of the year at the earliest.

For many users, this cycle seems a bit too long.

Taking these factors into consideration, Chang Haonan initially planned to release both Pro and Proplus versions first.

As for the Dawn version, we will wait until the end of the year when it can be delivered.

However, the situation was far beyond his expectation.

In fact, as exchanges between China and Western countries have become closer in recent years, even the Proplus version, which was only available to some domestic units in the past, has gradually opened up its rights to foreign partners with sufficient specifications, such as Kompas and Tupolev. , Snecma and Dassault used.

But even so, there are still many users who are unable to obtain Proplus rights, or are dissuaded by its outrageous price, who have shown great interest in the Sugon Edition—

Although the Sugon version is sold in a bundle, the Sugon 3000T itself is a supercomputer with performance among the top 100 in the world, and the software is equivalent to a gift, so it is not a loss at all.

It's even more cost-effective than buying a Sugon 3000 alone.

Before the end of the two-day Algorithm and Computational Science Conference, the number of users who came to inquire about this version and clearly expressed their intention to order was close to three figures...

In the end, Chang Haonan, who couldn't stand his over-enthusiasm, had no choice but to open the reservation channel in advance and promised to deliver products in the scheduled order starting from the end of the year.

Compared with the colleagues who sold cars at press conferences before the rebirth, the only difference is the policy of "50,000 deposit equal to 100,000 advance payment".

However, the situation faced by Chang Haonan is that there are too many orders and he is worried that the orders will not be delivered, so there is no motivation in this regard.

In short, when the conference was over and Chang Haonan saw Academician Li of Shuguang Group one day in early April, he had no doubt that if the age difference between the two was not so far apart, the latter could perform a "Jie Piao Ling" for him on the spot. For half of my life, I just regret that I have never met the Lord..."

In addition to the release of new versions of software, another thing is the numerical computing-graphical modeling alliance jointly established by Torch Group, Dassault Systèmes, and Kompas.

In the past, TORCMultiphysics also supported direct import of models from modeling software in various mainstream formats.

However, anyone who has experienced the barbaric period of the software industry at the beginning of the 21st century knows this.

Compatible does not mean easy to use.

Especially after Torch Group upgraded their mesh generation technology many times, some old 3D models gradually became seriously "acclimated".

So much so that before automatically generating the mesh, it is necessary to specifically adjust the model building nodes.

but.

After the formation of this software alliance, the three companies will completely open interfaces to each other to achieve maximum data compatibility.

In fact, this has been implemented in the new version of TORCMultiphysics. For users, there is no change in the performance of the software itself.

But it has doubled the user experience and work efficiency.

The first project to benefit from this software alliance is exactly what Chang Haonan has been thinking about -

Air Police 2000…

Almost at the same time the QC300 project review meeting was held.

Jinling.

A conference room in the 14th Institute of Electrical Engineering.

A technical discussion on the Air Police 2000 design plan is being held.

It was said to be a technical seminar, but not many people attended.

There were less than 10 people sitting on both sides of the long conference table.

On one side is Academician Wang Xiaomo, the chief scientist of the National Early Warning Detection Project and the general manager of the Air Police 2000 project, and two other leaders from the General Armament Department and the Air Force Equipment Department.

Opposite the three of them were Guo Lin, who had been promoted to deputy director of the 14th Institute and director of the Antenna and Microwave Department and chief designer of the radar system, five other heads of key subsystems, and an empty seat.

This seat originally belonged to Liang Shaoxiu, who was seconded to Haofei Group as the chief engineer of the platform.

He stood behind the desk from the beginning of the meeting, and then never found time to sit down and rest again...

The reason for all this has to go back to Liang Shaoxiu's first sentence after the opening:

"Dear leaders, our platform design team has successfully completed the three-dimensional reconstruction of the C909 carrier aircraft itself and the disc-shaped radome, and has separately calculated the carrier aircraft and the plan after the radome is installed on the carrier aircraft..."

Originally, this was just a monthly technical meeting.

But as soon as this sentence came out, the nature was completely different.

"Comrade Shaoxiu, I remember... during the meeting last month, you said that this work would take about 4-6 months to complete?"

Wang Xiaomo and Guo Lin have seen this kind of situation where progress suddenly becomes very fast.

But after all, it is Liang Shaoxiu and not Chang Haonan who is standing on the stage today...

So it was indeed a huge surprise.

"What happened last month...that's true."

The reason why Liang Shaoxiu chose to reveal this news during the meeting was because he was influenced by Chang Haonan. At this time, he finally experienced the pleasure of "shocking his peers for a whole year":

"Because the modeling and calculation workload of the radome is not large, the focus is still on the aircraft."

"Actually, we have received aircraft design data transferred to us from Hufei Group before. However, these data all came from Tupolev. Although the annotations have been translated into Chinese, the file format is not fully compatible with the CATIA we used in the past. , so it was expected to take several months to correct the format.”

"And importing CATIA models into numerical calculation programs requires about the same amount of proofreading and modification work... Compared with these two processes, CFD and CSD calculations take up less time."

"But after we actually started working, we found that solving the compatibility problem was not as difficult as we expected, so we released the results ahead of schedule..."

This explanation made several people sitting below not sure how to evaluate it.

After a while, Wang Xiaomo waved his hand and signaled Liang Shaoxiu to continue.

The latter didn't talk nonsense and continued to refer to Chang Haonan's habits.

Let's start with the big conclusion:

"Judging from the results, after the C909 passenger aircraft platform has raised the vertical tail and installed two tail fins, it is still difficult to carry the ellipsoidal radome with a diameter of 10.5 meters and a thickness of 1.9 meters in the planned plan 3."

"When the radome is set 2.8 meters away from the fuselage, the degree of downwash airflow generated by the wing will increase, resulting in a reduction in the angle of attack of the horizontal tail relative to the actual airflow, and a reduction in the lift generated by the horizontal tail. The maximum effective lift coefficient of the aircraft will be reduced to 1.107..."

When he said this, the air in the entire conference room almost froze.

The 14th Institute of Electrical Engineering has preset three radar plans for the Air Police 2000, with diameters of 10.5 meters, 9 meters and 8 meters respectively.

Although after changing the three-sided array to a double-sided array, the array area that can be accommodated by the same radome has increased by about 30%, but no one will find the antenna size too large, especially when the packaging technology is relatively backward.

Therefore, the project team still regarded the 10.5-meter radome as a priority solution.

And if the calculation results prove that it is not feasible, then there is a high probability that the next best option will be made.

However, Liang Shaoxiu did not worry everyone for too long.

After a brief pause, he immediately changed the subject:

"However, we tried to adjust the shape of the radome so that it could generate some lift while keeping the cross-sectional area unchanged, and then conducted a new test..."

As he spoke, he clicked the mouse, and the cross section of the radome on the curtain immediately turned into an ellipsoid with a slightly flatter bottom:

"After lift compensation, the influence of the radome on the maximum lift coefficient of the entire aircraft is reduced, only from 1.193 in the clean configuration to 1.178, which fully meets the design requirements!"

(End of chapter)

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