Zhenren Ziyang glared at his subordinates fiercely, while Liu Yijiu looked at Zhu Houdao with a serious face, but secretly gave him a thumbs up. He was very uncomfortable now.

There are people like this everywhere, but now they are scolded by Zhu Fangdao. I wonder if they will become more honest in the future.

Even the cleaners understand something, but these officials think it is not important, and it is not that easy for laymen to guide their experts.

A comrade like Johnson is a real good comrade. If you haven't seen it, Johnson doesn't understand or not, and there is no problem at all? Besides, no matter whether this test is important or not, whether it is wasted time or not, it will take a test flight tomorrow, and the previous time and other things cannot be retrieved.

In the past, Liu Yijiu would continue to attack, but now there is no.

Not everyone is like Johnson.

Moreover, although some officials have a low status, they hold grudges. Once they are bad, they will not cause any serious consequences or effects. This is a troublesome and a waste of time for Liu Yijiu.

"If you don't understand, ask, but don't evaluate the technology! You comrades are like this. You have to ask everything, and you are not humble..." Seeing everyone staring at him, especially Long Yaohua and Liu Yijiu, especially Liu Yijiu's little bastard's eyes, Ziyang Zhenren, who originally wanted to say nothing, had to teach a lesson to the middle-aged man who followed him.

However, this sounds very heavy, but in fact it is just like holding a stick high and gently putting it down.

No one cares, maybe this is the attitude that wants.

In order to let them divert their attention as soon as possible, Ziyang Zhenren restored the topic to its original track, "Comrade Zhuhoudao, please continue. Tonight, let us give us some popular science on the importance and role of fighter jet testing. In this way, comrades can understand the difficulties in their future work. They will not consider problems with the eyes and thinking of laymen..."

Zhu Houdao did not start directly, but stared at Liu Yijiu.

Liu Yijiu was so angry that he seemed to not let him say anything. Is he that cruel?

He immediately said dissatisfiedly, "General Zhu, the leader asked to introduce the low, medium and high-speed ground sliding experiment. Although this is very simple for those of us professionals, there are some complicated things and why we do this. The leader and the others don't know..."

It’s good to explain it so as not to see people who don’t understand each other again to do things that should be professional but cannot be professional.

Zhu Houdao rolled his eyes from Liu Yijiu, felt depressed, and stared at the guy who was interrupting again, before starting to introduce him.

"Low, medium and high-speed taxiing, each type of taxi has different detection contents. After the ring test is completed on the plane, all the faults encountered are solved, and the low-speed taxiing test is started. Low-speed taxiing mainly depends on the flexibility of the aircraft to taxi on the ground. During the design process of the fighter, the take-off conditions of the fighter need to be considered. Therefore, the ground taxiing ability of the fighter, such as turning radius, taxi speed, etc. must be required. Low-speed taxiing is used to detect whether these indicators of the fighter are in line with our design. At this time, our fighter is a tricycle, but our tricycle is more expensive than ordinary tricycles and is only worth hundreds of millions of dollars..."

These things are definitely not explained clearly in just a few sentences.

But it is impossible not to explain that Zhu Haotao uses the simplest language to explain the most professional content, but this last metaphor made many people laugh.

"Your tricycles are really too expensive!" This was the first time Johnson heard this theory.

Fighter jets and tricycles are one of the most advanced weapons and equipment in the world, and the other is just the most ordinary thing. No matter how advanced it is, it is impossible to fly in advance.

"The low-speed scooter test has resulted and no faults are met and meets the requirements of our design indicators, medium-speed scooters will be performed. Medium-speed scooters use speeds within a range of 60-100 kilometers per hour, and each speed must be tested to examine the corrective ability of the fighter. This kind of experiment, which has been imitated by the F-14 from the beginning to now, has been carried out 134 times, eliminating 228 hidden dangers and design problems..." When Zhu Houdao introduced the medium-speed scooter test, he particularly emphasized the important role of this test on the existing hidden dangers of the entire fighter system failure.

"Isn't it because I tested it many times at the beginning, so why does it still have a fault? Why can it be found during such an experiment?" Zi Yang Zhenren couldn't understand.

According to his ideas, or according to everyone's ideas, the fighter jet will let the pilot simulate flying in the cockpit from the beginning. Shouldn't it be possible to check out all the hidden dangers and faults of the fighter jet?

The low-speed scooters behind are all designed to detect the performance of the fighter.

Shouldn't it be possible to detect performance when sliding at medium speed?

"It is indeed for the purpose of detecting performance, which is the ability to detect the corrective deviation of the fighter. The difference between medium-speed taxiing and other taxiing tests is that after the fighter is started, it begins to taxi on the airport runway. During the entire taxiing process, the pilot will not do any operation of the fighter, place the fighter on the runway, and taxi forward with the engine thrust alone. If the aircraft is biased to one side and cannot walk in a straight line, it means that there are problems with the fighter! There are many factors that lead to deviation, which may be due to the asymmetry of the appearance, which may be aerodynamic asymmetry; or there may be problems with the landing gear - including the installation position of the landing gear, brakes, etc., which may cause the aircraft to deviate. It must be improved to allow the fighter to run out of a straight line, and a long straight line to enter the next high-speed taxi test."

Hearing Zhu Ke Tang's explanation, many leaders did not breathe.

They knew that the development of fighter jets was very complicated and difficult, but they absolutely did not expect it to be so.

Just the ground test before the test flight, there are so many ways.

Moreover, during these tests, it is also a process of making subtle modifications to the entire design plan. The entire project team does not hand over the design drawings to the production unit for production after they are completed.

"The problem of deviation has always troubled us for a long time, and the progress has been delayed for about half a year. It is because of this experiment that our first flight work has to push back again and again..." Liu Yijiu sighed and explained to Long Yaohua, Ziyang Zhenren and others.

All over the world, it is estimated that China has conducted the most trials in this regard.

"This is not caused by our insufficient design capabilities. Of course, there are also factors in this regard. More because our industrial foundation is not good, the processing and manufacturing accuracy is not high enough, and the assembly capability is not strong enough. Therefore, in the process of developing fighter jets, we must also solve the problems of producing various top-level processing and manufacturing equipment and even materials."

A fighter jet is not only related to design and production, but also to a high degree of integration of the entire industrial system.

The reason why Liu Yijiu said these words was to tell the boss above that if you want to have better weapons and equipment, you should not just let the project run, but also to allow the various basic industries related to this project to make the same improvement.

"The industrial foundation is very important, we all know this. Comrade Xiao Liu, now our fighter jets can have their first flight. Does this mean that our related supporting industries have also been improved?" Zi Yang Zhenren cares most about the industrial foundation.

If it weren’t for China’s industrial foundation that was too poor, Americans would dare to say that?

"Relatively speaking, it's a bit improved. Chief, although we can manufacture it, it does not mean that our foundation is already very good. The United States and the Soviet Union have good industrial foundations. Their fighter jets can be equipped in large quantities in a short period of time, and may produce hundreds of aircraft a year. Even if we make it, because our talent reserves and industrial foundations are insufficient, the number we can produce will not exceed 25 aircraft a year..." Liu Yijiu was very helpless.

The paths here are really too deep.

For the leaders above, they cannot figure it out, at least, in a short period of time.

Just tell them the impact or importance of the industrial foundation to these advanced manufacturing industries.

Then Liu Yijiu asked Zhu Houdao to continue talking about the issues about the high-speed scooter test.

"The high-speed taxiing experiment is used to determine the degree to which the aerodynamics of the fighter aircraft match the design value. Only fighters that fully match will dare to conduct flight tests!" Zhu Houdao explained the role of the last ground test before the test flight.

Without high-speed scooter experiments, fighter jets will never fly!

"Under the requirements of aerodynamics, the experiment of lifting the front wheel and then lowering it during the high-speed taxiing stage. That is to say, the pilot pulls the rod and lifts his head after he taxied to a certain speed. At this time, the aerodynamic power of the aircraft should be able to lift the front wheel. Then push the rod and the front wheel of the aircraft can return to the ground. Then take the aerodynamic parameters recorded by the relevant equipment on the aircraft and compare it with the data of the wind tunnel blowing, correct the calculation model, and make the fighter's first flight. At present, these work has been completed, and all the results have reached the best level of design. We imitated the f-14 and are waiting to fly!"

Indeed, for this day, they conducted various experiments over two years.

Even now, the fighter jets parked in the assembly workshop are still conducting operation tests in various parts.

In order to let the Chinese giant panda soar into the sky!
Chapter completed!