Chapter 72 Return to Beijing Airlines (25 additional updates for leader flankerr)

With the cooperation of the two people, it only took about 20 days to complete the design optimization of the heavily modified new wing of Project 83.

The final simulation results show that the improved wing can greatly improve the maneuverability of the aircraft. The position where the aileron reaction occurs when the bomb is loaded is greatly delayed. The stall angle of attack and the available overload at large angles of attack are also significantly improved. improve.

Of course, the specific performance data will not be known until the wind tunnel test is completed and the new wing is built and installed on the No. 04 demonstration aircraft for test flight.

In fact, if the Bayan Project is simply replaced with double delta wings, then there is potential for further improvement in performance in this area.

But this deviates from the original intention of the development of the J-8 model.

You know, the performance of the 1471G radar that the Bayan San Project is expected to replace is almost comparable to the APG66 (V). It may even be directly replaced with the 1473 type derived from it in the future, which is the same radar of the J-10, plus It is a twin-engine heavy interceptor, so the cost is not low.

With both Project 10 and Project 11 progressing smoothly, Project 83 can only be positioned as a specialized high-altitude, high-speed interceptor aircraft for the People's Air Force. It will follow a differentiated competition route. It is not easy to build two third-generation aircraft. things.

Therefore, all changes currently made must be to optimize other performance as much as possible while ensuring its high-altitude and high-speed capabilities.

If it is turned into an aircraft with no obvious strengths and weaknesses, it will have no advantage at all compared to the future J-10 and J-11.

Under the guidance of this idea, combined with the current level of China's aviation industry, Chang Haonan thought that he was already the best in wing design.

In addition, while waiting for the calculation results, he also completed the explanatory document he had promised Xu Yang and handed it to him on the last day before leaving the Institute of Computing Technology.

……

Originally, Chang Haonan should have followed Yang Xia back to Shengjing after finishing work here.

But if I count the days, it’s only a few days before Beijing Hang University’s postgraduate interview is recommended.

Although based on his current achievements, even if the confidential part of the 603rd Project is excluded, he can only rely on the first grade point in the whole grade, a paper in the "Journal of Aeronautics and Astronautics", and most importantly, the application. As the first person to complete advanced technological achievements, this interview is just a formality.

But this cutscene still has to go.

Just like more than 20 years later, a professor from Beihang University became an astronaut and had to hold group meetings and preside over students' graduation defenses in the space station.

At this time in 1996, there were not many places with Internet access. The upper limit of Internet speed was generally 56K, and in better conditions it could reach 128K. It took a while to open the simplest web page, so online interviews and so on...

Don't even think about it.

Of course, considering Chang Haonan's special situation, the college also said that if he really can't come back, he can use a camera to record a video of a few minutes and play it on site.

However, he himself is in the capital now. After the wing improvement is completed, there seems to be nothing special to worry about in a short period of time.

More importantly, the very act of using video to participate in an interview has a sense of beauty that is worthless.

So after thinking about it again and again, I decided to explain the situation to Yang Fenghata and go back to school to handle the matter of direct examination.

"Sister Xia, I want to have a phone call with Chief Yang."

Although this call had nothing to do with the specific content of the wing improvements, it did involve his and Yang Xia's schedules, so it was safer to contact them in a confidential manner.

"Telephone? But we are going back to Shengjing tomorrow or the day after tomorrow." Yang Xia looked at Chang Haonan with confusion and asked.

"Well... I have something going on at my school, and I may need to stay here in the capital for a few days."

Yang Xia was assigned the task of assisting Chang Haonan, so she would not interfere with the other party's decision. She just led the latter to an office at the Institute of Computing Technology, which contained several red phones.

"You can use whichever one you want. I'll wait for you outside."

After speaking, Yang Xia turned and left the room.

Chang Haonan quickly called Yang Fenghao's office and explained the situation to the other party.

"Of course that's no problem."

The reply there was also very pleasant.

After all, Chang Haonan is not from Institute 601, and in the past month or so, he has made great contributions to the entire August rd Project.

Even just discovering wing design flaws in advance is equivalent to saving several months of time on the project.

Not to mention that he directly solved this problem and even optimized the low-altitude and low-speed control problems that have troubled the J-8 for many years.

"In that case, I'll ask Engineer Xu Jinxu to come over and help you, and let him and Yang Xia bring the data back."

Obviously, due to the importance of this data, it cannot be brought back by Yang Xia alone. It must be accompanied by a second person with the same secret level.

Xu Jin is the old engineer Lin Shikuan mentioned before, and he met Chang Haonan at the first progress seminar.

The arrangement was quite thoughtful, so the latter naturally couldn't have any objections.

In addition, perhaps considering that after the wing design improvement work is completed, it will take some time to manufacture a new wing, Yang Fenghao even specially approved a half-month vacation so that Chang Haonan can concentrate on handling matters at the school. By the way, Have a good rest.

Of course, if there is an emergency in the meantime, you still have to ensure that you are on call.

So, the next morning, after completing the handover with Xu Jin, who rushed to the capital after a long journey, Chang Haonan finally returned to Beijing Hang University.

It was already mid-August, just in time for the freshman class of 1996 to register——

Because of military training, they arrive at school about half a month earlier than the older students.

As a result, the school gate was crowded with some bewildered new students as usual, as well as parents who came to see off their students. It took Chang Haonan a lot of effort to finally squeeze into the school.

"Hello classmate, may I ask if you need..."

Before he could recover, he heard a somewhat familiar voice.

"Old Wu?"

Chang Haonan raised his head and saw Wu Yifan standing under a parasol on the roadside, obviously thinking that he was a new student with a suitcase in his hand.

"I'll go, Nan Shen?"

The other party obviously recognized Chang Haonan: "Why are you here so early this year?"

Then he immediately realized something and answered himself: "Oh, yes, you have to prepare for the postgraduate interview..."

"Ahem... don't talk about this." Chang Haonan waved his hand: "What are you doing?"

Not far behind Wu Yifan, there were twenty or thirty junior students who looked like they should be sophomores or juniors at the beginning of school.

A little further away were three tables, filled with several cardboard boxes, which seemed to be small things such as IC phone cards, tape recorders, and electric kettles.

"Well, I'm not as capable as you. I want Academician Du to attend graduate school, so I can only take advantage of this opportunity to make some money..."

That’s it for today, I’ll continue to add more tomorrow