Chapter 1010 Three-dimensional reconstruction of the Air Police 2000 platform
During the month when Chang Haonan himself was busy with the QC300 project establishment, Torch Group was also dealing with the aftermath of the Numerical Algorithm and Computational Science Conference.
First of all, it is natural to officially release three different versions of the TORC Multiphysics 2.0 software——
In addition to the previously existing professional version and professional enhanced version, under the strong request of many users , Torch Group also launched the "pre-sale" of the Dawning version of the software in advance.
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 the first supercomputer in China 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 improve the performance of its products as much as possible. localization rate.
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.
After the localization rate increased, the cost not only did not decrease, but also 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 been suffering 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.
The result is that 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.
So for the Dawn 2000T ordered now, the delivery time 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 the 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 Used by Kompas, Tupolev, Snecma and Dassault.
But even so, there are still many users who are unable to obtain Proplus permissions or are dissuaded by its outrageous price, who have shown extremely high 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...
Finally , Chang Haonan, who couldn't stand the excessive enthusiasm, had 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 would be able to give him a speech on the spot. He acted like "A hero has been wandering for half his life, only regretting that he has never met his master..."
Besides the release of a new version of the software, another thing is the joint establishment of the Torch Group, Dassault Systèmes, and Kompas of the Numerical Computing-Graphical Modeling Alliance.
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 have gradually become 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 seminar on the design of Air Police 2000 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 leader of the Air Police 2000 project, and two other leaders from the General Armament Department and the Air Force Equipment Department.
Across from the three people, there are Guo Lin, who has been promoted to deputy director of the 14th Institute and director of the Antenna and Microwave Department, and serves as the chief designer of the radar system, the heads of five other 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...
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-type radome. The plan was calculated..."
Originally, this was just a monthly routine technical meeting.
But as soon as this sentence comes out, the nature is completely different.
"Comrade Shaoxiu, I remember... during the meeting last month, you also said that this work will take about 4-6 months to complete?"
In this situation, the progress suddenly became very fast, Wang Xiaomo He and Guo Lin have seen each other before.
But after all, it was Liang Shaoxiu and not Chang Haonan who stood on the stage today...
So it was indeed a huge surprise.
"What happened last month...is indeed that way."
The reason why Liang Shaoxiu chose to reveal this news during the meeting was because of the influence of Chang Haonan. At this time, he finally experienced the pleasure of "shocking his peers for a whole year":
"Because of the construction of the radome The workload of modeling and calculation is not large, the focus is still on the aircraft.”
“In fact, we have received the aircraft design data transferred to us from the Shanghai Aircraft Group before, but 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 are used to, so it was expected to take several months to correct the format. "
"And import the CATIA model into. Numerical calculation programs also require about the same amount of proofreading and modification work...Compared with these two processes, CFD and CSD calculations take up less time."
"But when we actually start. After work, we found that solving the compatibility problem was actually not as difficult as we expected, so we got the results ahead of time..."
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 heightening the vertical tail and installing two tail fins, the C909 passenger aircraft platform is still unable to carry the 10.5 diameter diameter in the planned plan 3. Meters, an ellipsoidal radome with a thickness of 1.9 meters.”
"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 Department 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 the antenna size is not too big for anyone, especially since the packaging technology is relatively backward. case.
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 short pause, he changed the topic directly:
“However, we tried to adjust the shape of the radome itself while keeping the cross-sectional area unchanged, so that it can produce partial lift, and then conducted a new test..."
As he spoke, he clicked the mouse, and the radome cross section 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 this chapter)