Chen Geng looked at the back of little McDonald with a smile, he knew very well that this guy was moved.

As the big boss of McDonnell Dalwells Group, McDonald Jr. should be very aware of how serious the problems and shortcomings inside McDonnell Douglas aircraft are, and these suggestions put forward by himself have an immediate effect on McDonnell Dalwellwells now.

However, Chen Geng also understands that the old man wants to save face, of course, it is not good to promise himself, but it doesn't matter, just wait slowly, but take advantage of this effort, Chen Geng went to COMAC to see the F120 No. 1 prototype that was doing static testing.

Yes, on the basis of the Fokker F100, by lengthening the fuselage section in front of the wing and the fuselage section behind the wing by 1.5 meters, the maximum passenger capacity has been increased from the 100 seats of the F100 to the current 120-seat F120, and now the prototype has been manufactured, and the static test to be carried out is one of the many key tests before the official production of the aircraft, which is used to verify whether the aircraft meets the structural strength required by the flight, which is an important means to ensure the flight safety of the aircraft.

When Chen Geng rushed to the aircraft static test laboratory of COMAC, all the test devices of the F120 prototype that had been assembled and were to be tested next were all in place , not only does the interior of the plane not have the slightest decoration, but the exterior paint is only brushed with a layer of primer, which is awkward to look at.

Looking at the F120 with various test decorations installed on it, Chen Geng asked Fang Zhiqiang: "Chief Engineer Fang, what test items have been completed now?"

"The pre-load test and the full load test have been completed," Fang Zhiqiang hurriedly said: "What is being done now is the destruction test." ”

Chen Geng nodded.

The so-called preload test is also the first part of the aircraft static test, in short, it is to use 20% to 30% of the load to tighten the test piece, eliminate the gap, when this step is completed, the load will be unloaded, and then load to the load step by step.

The requirements of this test are that the deformation of the fuselage structure cannot hinder the normal operation of the aircraft, and after the load is unloaded, there can be no obvious residual deformation in the corresponding parts, such as the residual deflection does not exceed 5% of the total deflection under the used load, and the residual strain does not exceed 0.2%.

The destruction test is also a test of the overall design strength of the aircraft, such as the position of the wing, the design standard is 100, in order to retain enough safety margin, there is usually about 10% redundancy, that is, in the design of the design, the designers will set the design strength of the wing at 110, and the requirement of the damage test is to test the design and engineering implementation: if the wing breaks when the load reaches 105 or even 103, it is not said, it is unqualified, and the strength is not enough;

However, if the wing does not break when the load reaches 115, it is also unqualified, because it means that the wing is overstrengthened, and the excess strength means that the weight in this position is too heavy and needs to be re-weighted.

As the pressure exerted on the fuselage and wings gradually increases, the wings have begun to show obvious bending deformation, and on the monitor in front of Chen Geng and Fang Zhiqiang, the display pressure values are also constantly beating: 85%, 86%, 88%......

When the pressure exerted on the wing reached 105% of the design strength, the wing was already bent very much, but the wing was still intact and not broken, and the most important thing was that the wing skin did not appear obvious wrinkles.

"Dong Chen, shall we continue?" Fang Zhiqiang asked Chen Geng cautiously.

Chen Geng glanced at Fang Zhiqiang and did not answer, but asked rhetorically, "Why?

As soon as these words came out, Fang Zhiqiang suddenly felt a little tired.

Why sit on wax?

Because the F120 is a little more than 3 meters on the basis of the F100, and the wings, vertical tail and flat tail have not been changed in any way, the F100 passed the experiment at the beginning, and now you have no confidence in the F120?

This means that the boss is beginning to doubt the ability of his own people.

In fact, according to international practice, such as this improved type, there is actually no need to carry out a full-scale fuselage destruction test, after all, all the previous fuselage components have been tested and verified, and similar improvements need to be tested on the improved parts to determine that there is no problem.

But "any improved model must carry out a full-scale fuselage destruction test" is a rule set by Chen Geng, who can object?

Fang Zhiqiang naturally didn't dare, he didn't dare to object, where did he dare to hesitate, immediately stood up straight, and said loudly: "We have confidence!"

"It's good to have faith. ”

Chen Geng nodded, didn't say anything, just waited for Fang Zhiqiang to continue commanding.

"Each team listens to my orders," Fang Zhiqiang squeezed a walkie-talkie and ordered, "Continue the test according to the established procedure." ”

The next moment, with the change of pressure values at various test points on the fuselage displayed on the screen, the load on the fuselage and wings had reached 109%, and with a creaking and harsh metal friction sound, when the load came to 111% and 111.04%, the fuselage and wings of the F120 broke violently.

"It worked!"

Looking at the broken fuselage and wings, everyone in the command room not only did not have any loss, but a relieved joy and happiness, and everyone spontaneously and warmly applauded: the breaking strength of the fuselage and wings is exactly the same as that of the F100, which means that the improved model of the F100 carried out by COMAC Group completely independently has been very successful in terms of fuselage structure!

Chen Geng was also very happy with this result, and he announced loudly: "Everyone continue, do the follow-up work well, I will invite everyone to dinner tonight, everyone relax!"

As for bonuses, holidays and the like, Chen Geng didn't say a word.

Although Chen Geng didn't say, no one was disappointed, the current COMAC Group is already a highly mature company, employees' salaries, bonuses, holidays, etc. have clear regulations, everyone knows what they can get after doing a certain job, if Chen Geng makes decisions with his own mood at this time, it interferes with the normal operation of the company.

Coming out of the test center, Chen Geng asked Nie Guang: "Comrade Nie Guang, when can the F120 be put on the market at the earliest?"

Nie Guang pursed his lips and said, "It will take two years at the earliest." ”

"Two years?"

Two years is actually not slow, although it is only a small facelift model, but the test flight certification process should be the same. Chen Geng nodded: "On the premise of ensuring quality, let's try to speed up as much as possible." ”

In other words, he is actually a little dissatisfied with this progress.

Nie Guang is a little puzzled: F120 is now in short supply in the market, because of high quality and low price, several domestic airlines like F100 very much, and now the order has been scheduled for three years, and with the scale of the domestic aviation market is getting bigger and bigger, more and more people choose the aircraft as a means of travel, F120 and the next F150 just meet the needs of the market and major airlines, if it is bigger, then it will be based on the fuselage of the Tu-204 introduced from the Soviet Tupolev Design Bureau. The commercial aviation map-204, which is composed of the avionics system and computer system of the F100 series fuselage and the RB211 engine produced by COMAC, can just meet the needs of the market - it is a large narrow-body trunk aircraft with more than 200 seats, which is a standard large aircraft.

But Nie Guang didn't say anything, just nodded: "Please rest assured, the chairman, we will speed up the progress of the entire project as much as possible under the premise of ensuring quality and quantity." ”

Speaking of this, Nie Guang paused slightly: "In addition, chairman, there is one more thing." ”

"Oh, tell me, what's the matter?"

"That's right," Nie Guang explained, "Aren't we going to carry out the second phase of construction here, and the leaders of Jinmen hope that we can increase the scale." ”

"Huh?" Chen Geng was stunned for a moment: "What do you say? Could it be that the leaders of Jinmen want to intervene in this?"

The current COMAC Group, with an annual output of 24 Fokker F100 aircraft, this production capacity is the best in China, even if it is the Yun-7 passenger type of the West Flying Group, it can not reach such a large production capacity, and according to the previous plan, the production capacity of the second phase is an annual output of F100 series (including F120 and the future F150) 36 aircraft, so that after the completion of the second phase of the project, the annual production capacity of the Tianjin manufacturing plant of the COMAC Group will reach 60, which is already a very scary number.

And the things Nie Guang mentioned made Chen Geng unable to think about it without thinking: What does the leader of Jinmen want to do?

"No," Nie Guang shook his head and said, "According to my previous contact with the city leaders, they just want us to expand our production capacity...... Isn't the preferential tax period about to pass, the larger our production capacity, the higher the sales, and the higher the tax they can receive.

On the other hand, if we expand the scale again, we will inevitably recruit more workers, and these workers will not play a small role in driving the economy of Tianjin City......"

Got it!

Without waiting for Nie Guang to finish speaking, Chen Geng had roughly understood the thoughts of the leaders of Jinmen: they did not interfere with the idea of COMAC, but they took a fancy to the driving effect of COMAC Group's production scale on the local economy.

However, in Chen Geng's view, this is not a bad thing, COMAC and the local government help each other, which is supposed to be, and it is not surprising that the local government has put forward some requirements out of its own interests, in fact, the leaders of Tianjin have put forward this request is quite restrained.

He thought for a moment and said to Nie Guang: "In this way, if you talk to the leaders of Jinmen, you can communicate with them face-to-face, and if you have any demands, you can sit down and talk." ”

Nie Guang didn't expect his boss to be so easy to speak, so he immediately nodded: "Okay, I'll talk to them when I get back...... Boss, are you ready to scale up too?"

As the deputy director in charge of production at the original Chengfa Factory, Nie Guang quickly reacted to why his chairman had such a move: Could it be that the boss was already thinking about expanding the production capacity of the second phase?

Chen Geng smiled and did not hide it: "What era was the time when we decided to build the Tianjin Factory? Who would have thought that the domestic aviation industry had developed to this extent?"

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PS: Sorry brothers, please wait a few minutes.

The current COMAC Group, with an annual output of 24 Fokker F100 aircraft, this production capacity is the best in China, even if it is the Yun-7 passenger type of the West Flying Group, it can not reach such a large production capacity, and according to the previous plan, the production capacity of the second phase is an annual output of F100 series (including F120 and the future F150) 36 aircraft, so that after the completion of the second phase of the project, the annual production capacity of the Tianjin manufacturing plant of the COMAC Group will reach 60, which is already a very scary number.

And the things Nie Guang mentioned made Chen Geng unable to think about it without thinking: What does the leader of Jinmen want to do?

"No," Nie Guang shook his head and said, "According to my previous contact with the city leaders, they just want us to expand our production capacity...... Isn't the preferential tax period about to pass, the larger our production capacity, the higher the sales, and the higher the tax they can receive.

On the other hand, if we expand the scale again, we will inevitably recruit more workers, and these workers will not play a small role in driving the economy of Tianjin City......"

Got it!

Without waiting for Nie Guang to finish speaking, Chen Geng had roughly understood the thoughts of the leaders of Jinmen: they did not interfere with the idea of COMAC, but they took a fancy to the driving effect of COMAC Group's production scale on the local economy.

However, in Chen Geng's view, this is not a bad thing, COMAC and the local government help each other, which is supposed to be, and it is not surprising that the local government has put forward some requirements out of its own interests, in fact, the leaders of Tianjin have put forward this request is quite restrained.

He thought for a moment and said to Nie Guang: "In this way, if you talk to the leaders of Jinmen, you can communicate with them face-to-face, and if you have any demands, you can sit down and talk." ”

Nie Guang didn't expect his boss to be so easy to speak, so he immediately nodded: "Okay, I'll talk to them when I get back...... Boss, are you ready to scale up too?"

As the deputy director in charge of production at the original Chengfa Factory, Nie Guang quickly reacted to why his chairman had such a move: Could it be that the boss was already thinking about expanding the production capacity of the second phase?

Chen Geng smiled and did not hide it: "What era was the time when we decided to build the Tianjin Factory? Who would have thought that the domestic aviation industry had developed to this extent?"