Before, their digital design team couldn't even catch up with the progress of the project and was falling farther and farther away, but today is only an afternoon's work, Chang Haonan has directly started to look for the design problems of the 83 project, and consider ways to improve?

It's like a student who has always had the worst grades in the class suddenly counterattacked and took the first place in the exam, and he had to give a lecture to the top students in the class.

It's like a dream.

In fact, the reason why Chang Haonan can be so confident is naturally because he knew that there was a problem in the 83 Project, and he also knew that some small changes were made to the wing for this purpose when the J-8F was designed later, so as to adapt to the air-to-ground weapons with greater size and weight.

Only this time, he was no longer satisfied with just repeating the improvements made by later generations.

Judging from the situation at the end of the 90s, the J-8 airframe actually has considerable potential to be tapped, and the People's Air Force also needs a type of aircraft to complete high-altitude tactical reconnaissance and interception missions.

Of course, in the original timeline, the level of Huaxia's aviation industry was still relatively low at this time, and it was already around 2010 when it developed enough to continue to tap the potential of the J-8F, which was indeed a bit late.

But for Chang Haonan, who returned to 1996, there is still a chance!

"That...... Is there anything we can do to help? ”

Lin Shikuan asked weakly beside him.

If what Chang Haonan said is true, then this is a great opportunity for the entire digital design team to turn around.

Even if it turns out to be the other party's worries in the end, there will be no problem.

There's nothing to lose anyway.

At the beginning of last year, when this group was just established, because there was no need to frequently go down to the workshop and climb up and down to draw by hand, it also served as a fragrant dumpling for a period of time, and Lin Shikuan, as the leader of the group, could even get a front seat every time he had a meeting.

But as time passed, their status, which had never been able to produce convincing results, was declining, and Lin Shikuan himself had no face to sit in front.

Until recently, when he had a meeting, he was looking for a corner cat, for fear of being named by the leaders in front of him.

It's like a graduate student who is not optimistic about his progress at the time of the group meeting.

"Help ......"

Chang Haonan didn't think of what he needed, but after clicking the mouse twice, he found that the pointer style of the system had changed from a familiar pointer to a small funnel that was constantly rotating.

Before Windows 7 came along, this cursor indicated that the system was busy and the user should wait.

"Do you have any better computers here, such as workstations or servers?"

"There are two SUN workstations, but we usually only use them when doing complex calculations." Lin Shikuan replied.

“SUN…… Is it a UNIX system? ”

In the second half of the 90s, with the continuous development of Windows NT and linux systems, Unix has shown signs of gradual decline, but after all, it has an advantage in security and stability, so it still has a fairly high stock.

Of course, it is possible to run simulation software such as Fluent and Nastran in a Unix environment, and even for a long time, the full functionality of fluent could only be run on Unix.

But Chang Haonan is not proficient in this.

"It's Unix, and we have a manual, but it's still cumbersome to use."

"No need, you can take me there." Chang Haonan pulled out the floppy disk in the computer.

"Would you still use Unix?"

Yao Mengna next to her had a curious glint in her eyes.

"I've studied some open source Linux systems, so the operation should be fine."

"If I hadn't seen your student ID before, I couldn't believe you were only in your twenties." Yao Mengna shook her head and sighed: "Sometimes I wonder if you have 48 hours a day, otherwise how could you learn so many things?" ”

"It's all about managing your time wisely, and maybe a little bit of luck."

While Chang Haonan spoke, he quietly spent 5 points in the system to start a new project.

[Aerodynamic derivative and flight load analysis of the J-8 aircraft with bomb in Unix environment, and the influence of parameters such as aerodynamic force type, flight pressure and angle of attack on rudder surface maneuvering efficiency was studied]

In an instant, a lot of knowledge about the Unix environment poured into Chang Haonan's mind, but fortunately, he already knew about the content related to aerodynamic simulation, so he didn't find it difficult to bear.

At this time, Lin Shikuan, who was walking in front and leading the way, suddenly asked in a slightly curious tone: "I know Linux, but what does open source mean?" ”

Chang Haonan, who heard this question, reacted that the concept of open source should have been officially born in 1998.

"Uh...... It means free, after all, Unix has to charge and is very expensive, and it is impossible for computers in ordinary places to install this kind of system. Chang Haonan was not a programmer in his previous life, so he didn't know much about the details of these definitions, so he casually responded to the past.

Fortunately, at this time, the three of them also came to the room next door where the workstation was placed, and Lin Shikuan seemed to want to ask something, but in the end he didn't speak, just stepped forward and turned on the power of the workstation with a not very skillful movement.

As a command-line based operating system, no one developed a beautiful graphical interface for Unix and Linux in the 90s, so after the workstation was turned on, Chang Haonan was greeted by a monotonous command-line interface.

However, with the help of the system, although Chang Haonan is actually seeing Unix for the first time, he can use it as he commands.

Even though it's not the first time I've experienced it, the feeling is ......

It's amazing.

Although Lin Xikuan's work in the past year and a half was in the wrong direction, they were definitely not paddling, and they were very meticulous in modeling the structure of the wing of the J-8-3 aircraft, which saved Chang Haonan a lot of effort.

The native version of fluent in the Unix environment has a GAMBIT pre-processing software dedicated to meshing, which allows him to skip the time-consuming and tedious meshing process to some extent and start the calculations directly after determining the flow field model around the wing.

Yao Mengna looked at Chang Haonan, who was operating the workstation, and felt as if she had returned to the afternoon when the two met for the first time.

"Lin Gong, when we came in the morning, Mr. Yang said that we have a project progress seminar tomorrow night, is this something that all groups of the 83 Project should attend?"

After a while, Chang Haonan looked at the program that was being calculated in front of him, and turned back to Lin Shikuan, who had been watching from behind, and asked.

"That's right, it's the biggest monthly meeting of the entire project team."

As soon as he mentioned this, Lin Shikuan's expression quickly fell: "Not only must each group send people to participate, but they must also report their own work progress." ”

Obviously, for him in the past, such a time was basically equivalent to a public execution.

"Hmm...... That's good. Chang Haonan got up from his chair and moved his muscles: "Then when it's time for the meeting, can I speak on behalf of the digital design team?" ”