Wu Changcheng did not deliberately lower his voice, and it came out through the hollow porthole of the plane, and Professor Ding and the others outside heard it very clearly.

They quickly glanced at each other, and they both saw a look of surprise on each other's faces.

They may not know about aluminum-lithium alloy, nor do they know aramid paper, but France's Mirage 2000 fighter is like thunder, as one of the few third-generation fighters in the United States and the Soviet Union, the Mirage 2000 fighter has attracted the attention of the aviation circles of various countries as soon as it came out.

Among them is China.

So much so that for a certain period of time, the country almost introduced this fighter back as a new generation of main fighters, but unfortunately the French asked for too high a price, and in the end it was lost.

And Wu Changcheng was one of the members of the domestic technical expert group who went to France to inspect the Mirage 2000 fighter, and because of this, when it comes to understanding the French fighter, Wu Changcheng can be described as an authority, so it is not surprising that Ding Laixiang and others were surprised.

"Old Wu, are you sure that the materials of the improved Y-5 are the same as those on the French Mirage 2000 fighter?" Researcher Qian, who was standing behind Ding Laixiang, was anxious, and after a short period of surprise, he immediately asked loudly at Wu Changcheng in the cabin.

Wu Changcheng poked his head out of a porthole: "Listening to Xiaolin's narration, it is somewhat similar to what I saw in France last year, of course, I don't know much about the specifics, after all, this technology is also at the forefront of the field in France, and they have only used some of it on the ailerons of the Mirage 2000, and they are ready to achieve large-scale application before the mid-nineties." ”

As soon as these words came out, the questioning researcher Qian frowned deeply, even France, whose aviation technology far surpassed China, did not put this technology into large-scale use, but only used it on a small scale on small load-bearing structures such as ailerons.

The more I think about it, the more I think about it, the more I think about it, the Tengfei Aviation Manufacturing Corporation takes it for granted.

So he wanted to open his mouth to say a few words of criticism, but he didn't want to say it yet, so Lin Guanghua poked his head out of another porthole and took the first step and said: "The French are still too conservative, and the American F-15 and F-18 have applied similar materials to almost all control rudder surfaces.

After research, our Tengfei Aviation Corporation found that under high overload, the honeycomb structure body may not be suitable, but in the small general aircraft that pays attention to stable flight, the honeycomb structure body is enough to compete. ”

As he spoke, he patted the outer skin with his hand, and continued with a clanging sound: "The aluminum-lithium alloy plates on the inner and outer sides are all finely treated by chemical milling process, and the thickness is controlled in the range of 0.025mm, and all of them are formed at one time; ”

After a pause, Lin Guanghua walked out of the cabin quickly, and his voice became louder and louder: "I dare not say that these series of technologies are groundbreaking, but they are definitely very forward-looking in China, not to mention anything else, just to do a comprehensive test of the honeycomb structure, I think it is also a breakthrough in the field of domestic aviation, you must know that similar materials have been applied in Europe and the United States, why can't we?"

Even if our improved Y-5 proved to be a failed attempt in the final test, but at least we have worked hard and struggled, aviation technology is a very practical discipline after all, although our Tengfei Aviation Manufacturing Company is not large, but for the development of aviation technology, the necessary material sacrifices are still dare to bear. ”

Lin Guanghua spoke very quickly, from the production and manufacturing technology applied by Tengfei Aviation Manufacturing Corporation, to the explanation of the entire honeycomb structure, and finally expressed his heartfelt words of daring to sacrifice for scientific research.

It is said that it is a righteous and awe-inspiring one, with a slightly flickering gaze, but like a warrior who is about to go to the battlefield, impassioned and messy.

As if he Lin Guanghua and Tengfei Aviation Manufacturing Corporation were going to suffer a great deal of hardship, he knew that he could not do it, so he almost immediately dedicated himself to scientific research.

However, in fact, Lin Guanghua was annoyed by Wu Changcheng and a group of old professors, you said to explain advanced materials to them, they were skeptical, explain the advanced manufacturing technology of the head office, the tone of doubt is even greater, in this case, Lin Guanghua simply did not want to waste saliva, simply hoisted the plane directly onto the static test bench, and directly spoke with facts.

Ding Laixiang, Wu Changcheng and others knew that Lin Guanghua learned from Zhuang Jianye, glanced at each other, and then bowed their heads to discuss, feeling that Lin Guanghua's words were quite reasonable, no matter what the aircraft type, the practice of new materials and new processes has always been the core element of the continuous development of the field of aviation technology.

Therefore, there was no nonsense, and the hoisting equipment was directly transferred to the improved Y-5 to the static test bench, and then the officers and men of the test bench began to add counterweight lead blocks to the upper and lower parts of the aircraft fuselage in accordance with the technical samples obtained in advance.

......

Tengfei Aviation Manufacturing Corporation, Zhuang Jianye accompanied two old men, one tall and one short, from the headquarters office building in Huancheng, and saw that they were about to stop the two old men, and one of the short and fat old men in military uniforms looked back at Zhuang Jianye: "I saw your new product just now is really good, it is of great help to the logistics of the troops, and I will report to my superiors when I go back." ”

As he spoke, he looked at the tall thin old man next to him and asked with a smile, "How is it?"

The tall and thin old man is the leader of the health department, Professor Hong Xiaosong, who once gave the medical department of Tengfei Factory an inscription "Keep improving", listened to the words of the head of the Humpty Dumpty Army, Hong Xiaosong smiled and shook his head: "Things are good, but we don't have a big demand for this kind of thing, and it is better to improve the county-level medical institutions with the money to purchase this thing." ”

Listening to Hong Xiaosong's words, the short and fat head of the unit couldn't help but smile, and nodded in agreement: "That's true, seriously, if it weren't for the fact that the medical support equipment of the army has not improved for so many years, I don't want to spend such a large amount of money." ”

The voice fell and looked up at Zhuang Jianye: "Xiao Zhuang, do you want to tell me the truth, those things that you show us really apply the latest aerospace technology?"

"It's true. Zhuang Jianye hurriedly patted his chest and promised: "You two also saw just now, all the plates are imported aviation materials from Germany and France, which are not only warm, dry, soundproof, and most importantly, have part of the function of the pressurized cabin, and only aerospace technology has such an effect." ”

The short and fat head of the army nodded after hearing this, and then chatted with Zhuang Jianye for a few more words, and then got in the car with Hong Xiaosong and left.

Zhuang Jianye, who was about to complete a big business, was in a good mood, until the car disappeared for a long time, he put down his hand and waved goodbye, looked at his watch, it was almost six o'clock in the afternoon, so he stretched his waist and prepared to go home from work, but before he could turn over and go upstairs to pack his things, the assistant Xiao Zheng hurriedly ran down: "Mr. Zhuang, Lin Gong phone." ”

Just a sentence, Zhuang Jianye went home from work, immediately left it behind, turned over and rushed upstairs, pushed the door to his office and picked up the phone on the table, but before he could speak, he heard Lin Guanghua over there shout first: "Lao Zhuang, the head of the army asked us to change the plane......"