Chapter 76 Pay attention to the engine (added 45 for leader flankerr)
After saying goodbye to Zhou Shuwan, Chang Haonan did not wait too long when he saw Du Yishan and Liu Zhenxiang carrying things from the stairs. The mouth came over.
The three of them walked into Du Yishan's office together.
"Xiao Chang, I heard Yang Fenghao tell me two days ago that you helped them find out a hidden danger in the overall design just over a month ago?"
Two The two academicians are all within the aviation system and are directly or indirectly involved in the 83rd Project, so it is natural to discuss this issue.
"Yes, it's about the efficiency of rudder control." Chang Haonan nodded: "But it's not difficult to solve."
This is his contribution in an upright manner, and there is nothing to be embarrassed about.
"Isn't it difficult to solve?" Du Yishan and Liu Zhenxiang looked at each other: "I heard that the 601 Institute has revised the overall design, and is even preparing to build a new full-state aircraft for this purpose. The prototype aircraft, this movement is quite big.”
“Oh, this is because Senior Sister Yao and I made some other modifications to the aircraft, especially to improve the aircraft’s large elevation angle operation at subsonic speeds. Performance..."
Chang Haonan then took a few minutes to briefly explain the work he had done at the Institute of Computing Technology of the Chinese Academy of Sciences in the past twenty days.
After listening, Du Yishan looked at Chang Haonan sitting on the sofa opposite and fell into silence.
Even though he has a lot of life experience, he still doesn't know what to say when faced with this situation.
He suddenly felt that language was such a weak thing that he could only express his current mood through silence.
In the past, the progress of program improvements like this was basically calculated in years, or at least in months.
But since accepting a student like Chang Haonan, the unit "Tian" seems to have become more common.
You can even occasionally see counting in hours...
"Alas..."
"Alas..."
Two almost identical sighs at the same time sounded.
Du Yishan glanced at Liu Zhenxiang, and it could be seen from the latter's expression and eyes that he had the same idea as him.
"The waves behind the Yangtze River push the waves ahead..."
But this sadness of spring and autumn only lasted for a moment.
Both of them know very well that at their age, no matter how high their hats are on their heads, they are already at the end of their scientific research careers.
The future must belong to young people like Chang Haonan.
When young people are strong, the country is strong!
After a long period of silence, Du Yishan finally spoke again, but this time it was a different topic:
"Xiao Chang, from your perspective, do you think the August 3rd Project can be completed before the end of this year? A breakthrough?"
"A breakthrough..."
Chang Haonan was keenly aware that this problem was unusual.
So he did not choose to answer immediately, but thought about the general situation of the entire August 3rd Project - not only what he knew now, but also what he knew in his previous life.
Neither academician bothered him verbally.
A few minutes later, Chang Haonan raised his head again:
“I think that if we just talk about the J-8-3 aircraft, we should be able to come up with one this year. It is more optimistic. The progress of the project."
"In fact, the design of the Eighty-three Project is already very complete. The only risk is the insufficient turbojet 14 engine."
"Although it is because of the engine. Due to the major wing modification, the flight test progress of the full-state prototype has been delayed to a certain extent. However, through my previous work, I have basically figured out the situation of this aircraft, and I can obtain more accurate results through calculation and simulation. Test flight conditions and improve test flight efficiency”
"Considering that there are still more than four months left before the end of the year, it may still be difficult to finalize the design, but it should not be a problem to complete the test flights of the main subjects." After listening to Chang Haonan's analysis, Du Yishan raised his hand and touched Touched his temples:
“You just said about the J-8-3 aircraft, does that mean you think there are other parts that may have problems?”
"Well... then of course it is an airborne weapon." Chang Haonan replied after thinking for a while:
"I heard from comrades in the 601 Institute that the progress of replicating the Thunderbolt 11 is not optimistic, and from Italy The number of imported Aspads is very small. If this is the case, even if we have new fighter jets, we will be faced with the situation of having no ammunition.”
The field of airborne weapons and ammunition is an almost completely unfamiliar part to him. Although everything is possible with the system, his energy is limited after all, and it may be difficult to spare in the remaining more than 100 days of this year. Take the time to think about air-to-air missiles.
"Is this your opinion?"
"That's right." Chang Haonan's tone was full of confidence.
At this time, Liu Zhenxiang, who had just been listening silently, suddenly interrupted:
"As for the situation of Turbojet 14, Xiao Chang, you can do more after returning to 601 this time. Serve snacks.”
"I would like to hear the details."
Chang Haonan cheered up instantly.
As a leading figure in the field of aviation development in my country, although Liu Zhenxiang has not directly participated in the turbojet 14 project, his judgment is obviously very valuable.
“In this matter, the progress of my work is a bit slow.”
Liu Zhenxiang’s tone contained a hint of self-blame:
"When the turbojet 14 was being designed overall, the high-altitude platform at the Turbine Research Institute was still in the development stage and its functions were not perfect, so there was no condition for comprehensive ground testing, especially in the absence of complex air intake conditions at high Mach numbers. The test data. "
"Although the turbojet 14 has not had any serious accidents on the J-8-3 in recent years, neither we nor the 606th Institute are still relieved. "
"I heard Lao Du say before that you have also done some research in the field of flow channel simulation of impeller machinery. Originally, even developed countries in Europe and the United States highly rely on testing and experience in this regard. But I think if you do it, you might be able to find something.”
Obviously, Chang Haonan’s previous brilliant experience in the MA-60 and 83 projects gave Liu Zhenxiang full confidence in him. .
“Is that so?”
After listening to Liu Zhenxiang's explanation of the ins and outs, Chang Haonan immediately felt a little unable to sit still.
"Teacher, I am going to go back to Shengjing early tomorrow morning!"
Originally, he chose to go back to Beijing Airlines to rest for a few days. A big reason was that he felt that there was nothing urgent to do later. You have to do it, and now that you have a goal, it is not appropriate to stay in the capital anymore.
"Okay, I'll prepare a ticket for you tomorrow."
Du Yishan nodded. When he heard Liu Zhenxiang talk about the engine problem just now, he knew what he, a student, would do next. .
After saying that, he stood up and walked to a cabinet in the corner of the office. He opened the door and took out a brand new black computer bag and handed it to Chang Haonan:
“This is purchased from abroad some time ago. "It's the latest model this year. Consider it an undergraduate graduation gift from me, the teacher, in advance."
Chang Haonan unzipped the corner of his computer bag and looked down.
ThinkPad560.
The pioneer of portable thin and light notebooks.
Of course, this is all from the perspective of 1996.
The weight of 1.9kg and the thickness of 3cm are quite exaggerated in this era.
If this was another gift, Chang Haonan might choose to refuse.
But he really needs a laptop of his own.
"Thank you, teacher."
"It doesn't matter. If you can use it to make more contributions to scientific research, it will be the best thank you to me."
(End of this chapter)