On 15 August, all the personnel and equipment for logistical support were in place, and all the preparations for the aircraft maintenance were completed.

The simulated cockpit needed for the modification was the last to arrive, and the second division used it until the arrival of the new simulated cockpit assigned to them by the superiors before sending the old loading over. The 73rd Division not only picks up second-hand aircraft, but also picks up everything.

Probably because Qi Hong already knew about Li Zhan digging his corner. It's not surprising to strictly follow the procedure to give you some color, otherwise it's not impossible to know that you're in a hurry to pull you over first.

Li Zhan had to face the reality, although he very much wanted to build up his combat effectiveness as soon as possible. In the second half of 2010, he had a strong sense of urgency for no reason, and felt more pressed than ever before. The three major groups modified the J-7E and upgraded from the training group to the fighter group, and they started training directly, but the SU-27 fighters on the side of the first group (the destruction king brigade) have been parked on the ground for more than half a month. Li Zhan could only stare at anxiously.

The only thing that is gratifying is that in the past half a month, the instructor group headed by Nie Jianfeng and the theoretical assistance group composed of Yang Jinshan, Han Hongjun, and Li Zixin conducted systematic teaching on the theory of the SU-27 fighter against the Wang Brigade of Destruction.

Relatively speaking, it is much easier for them to modify the SU-27 now than the first batch of predecessors to modify this model, you must know that not only the textbook was in Russian, but even all the places that needed to be marked on the fighter were in Russian. Before the modification, I learned Russian, so the people who participated in the modification of the SU-27 back then were very slippery in Russian.

Fang Chenghe is one of them, and so far he has no pressure to talk to the Russians casually.

After another week of simulated cockpits, Li Zhan finally received an order to conduct practical training in the last week of August. After a series of preparations, on 25 August, the Destruction King Brigade began to train for ground skiing.

Because of the heavy training tasks, the second and third brigades were transferred to the East Reservoir Station for training, and the North Reservoir Station became the exclusive territory of the Wang Brigade.

A brigade of eighteen fighters is only six fewer than an ordinary flying regiment. Moreover, these are eighteen heavy fighters, not comparable to the original eighteen light fighters. In terms of maximum take-off weight, eighteen SU-27s are almost three times as many as the same number of J-7s.

"Just follow the process and pay attention to the brakes." Nie Jianfeng in the rear cabin said to Li Zhan.

Li Zhan sat in the front cabin, looking at the console full of instruments, and performing the pre-flight inspection procedures. The cockpit of the early models of the SU-27 is also a terrible one, not much cleaner than the J-7EG, and maybe even inferior to the J-7EG. Don't think about it anymore, it's all meters, full of the old hairy and unbearable style - just use it. On the right is the radar display, barely on top of the advanced.

The batch of SU-27s handed over by the Second Division has been improved twice, the first time is Chinese, and the second time is to replace it with a new domestic Doppler airborne radar. This makes the SU-27 a little easier to use. In the early days, because the Russian side did not sell the source code of the fire control system, these flankers could not use domestic thunderbolts and other ammunition, let alone access to our army's friend or foe identification system, resulting in a long time becoming a model product, which also scared and scared people. Later, these problems were solved, and the imported flankers were truly formed.

Li Zhan carefully followed the steps and reported, "The inspection before the flight of the two crutches has been completed. ”

Nie Jianfeng looked sideways at the ground controller in the visual position on the right wing, and saw that he raised the red flag, so Nie Jianfeng gave Li Zhan an order, "Start the left shot." ”

"Start the left hair."

Left hair drove smoothly.

Nie Jianfeng checked the status of the left hair, confirmed the normal start, and then ordered, "Start the right shot." ”

"Start the right hair." Li Zhan started the right hair step by step.

The SU-27 has a large fuselage and a large take-off weight, which can carry a strong autonomous power supply, so it can often be driven without relying on ground power vehicles. However, in general, it will be assisted by a ground power supply vehicle.

Once again, confirming that it was normal, Nie Jianfeng ordered, "Close the canopy." ”

"Close the canopy."

The canopy is slowly closed.

"Undo the front wheel steering lock."

"Undo the front wheel steering lock."

"The throttle stick slows down and starts coasting."

"The throttle stick is in a slow position, and it starts to slide, and the thrust is so big." Li Zhan hurriedly pressed the brake button on the operating lever and braked.

Nie Jianfeng said with a smile, "Do you think it's still a Jian-7, the thrust of one AL-31F is equal to two WP-7Ps, don't you know how big the thrust is, why do you pay attention to the brakes, and if you don't pay attention, you will run on the grass." ”

"Isn't this used to being poor, hehe, I used to drive a little six displacement, and suddenly blew up a muscle car with eight cylinders of six zero displacement, and it's normal to have a bad throttle." Li Zhan said with a smile.

Nie Jianfeng said, "In the future, don't turn on the afterburner at every turn, this thing will have a little dive angle as soon as the afterburner is opened, and it will be easy to relax a little Mach 5." ”

"No, also, this operating lever is also very sensitive, the transmission system reacts quickly, and there will be feedback immediately after a slight movement, which is much better than J-7." Li Zhan steadily operated the No. 27 SU-27UBK along the taxiway to the runway.

"This is the characteristic of the third-generation aircraft, slowly adapting, Su Erqi is still relatively difficult to control." Nie Jianfeng said.

After studying the theory, the experience summed up in the use of the troops in the past ten years and the response plan for various dangerous situations, Li Zhan is very clear about the advantages and disadvantages of the SU-27. The SU-27 uses a hybrid transmission control system, with fly-by-wire in the longitudinal direction and mechanical transmission in the transverse direction. In the early stage of the development of the machine, the prototype used mechanical transmission control, and the fly-by-wire installation was installed after an accident exposed the problem, so such a hybrid transmission control system was formed.

The same is true for the domestic models J-11A and J-11B.

The reason why the SU-27 is difficult to control is that when the pitch attitude of the aircraft is changed, it is very easy to exceed the flight envelope, resulting in stall overload and rapid loss of kinetic energy, and if it is at a low altitude, it is very easy to cause a crash.

It is often said that the defect of the SU-27 lies in hypochondriasis, but in fact, when the final mass production is no longer there, the mass production machine has solved the problem of insufficient strength of the body.

What was critical was the lift-body structure that had never been seen before at the time. Because of this lifting body and edge strip design, a phenomenon has been created - a slight pull dry nose lifted, overload five or six G at once. The average fighter in this case is only about two Gs, which shows how powerful the SU-27's head-up overload is.

In this case, the pilot's first reaction must be to press the lever down the nose, but the flight control system will automatically intervene to trim it, which will cause the aircraft to oscillate back and forth, and then disintegrate in the air. This is also one of the reasons why it is misunderstood for hypochondriasis, which has little to do with the structural strength of the body.

But after the lesson of blood, Maozi's design team learned from the pain and added a fly-by-wire control system to the SU-27, why it is longitudinal, the purpose is to target the problem of this pull rod raising its head sharply. In fact, the simplest and most reliable way is to change the aerodynamic layout, but in order to obtain a large range of 4,000 kilometers and excellent maneuverability, Maozi's design team stubbornly did not change the aerodynamic layout. Their persistence also created a great fighter in the history of the world's aviation weapons, and later obtained economic benefits beyond imagination.

Why did it take so many years for Shen Hoi to localize the SU-27, and Cheng Luoma's J-10 was equipped with troops in 2004, and your dignified factory is still gnawing on the SU-27? The J-11A is an imported parts assembly type, and the J-11B is a completely domestic model of the improved version, so I don't know how much more advanced the B type is than the A type.

Why did Type B not roll off the assembly line until 2008, four years later than the J-10, which was completely independently developed!

Because the Russian side not only does not sell the code of the fire control system, but also refuses to sell the vital flight control system. What I gave you is a production license for 200 aircraft, and I will provide the key systems, what do you want the code to fly for?

The flight controller that Mao Zi made back then was to solve the problem of raising his head and bowing his head sharply caused by the lifting body characteristics of the SU-27, for which they sacrificed many test pilots and paid a great price.

Since Maozi refuses to sell, let's do it yourself. Shen Huoyi gnawed on this bone in those years, and paid a great price, and finally came up with a more advanced three-axis and four-redundancy digital fly-by-wire control system than Maozi. The hybrid system used by Maozi on the SU-27 has a transverse mechanical rod system, which is heavy and bulky, and overly complex.

It is in response to that sentence: everything that is restricted, we develop well and better than others, and everything that can be easily obtained, but there is no growth after decades (for example, the automobile industry is like).

Therefore, in fact, we wronged Shen Hoy in those years, and they have been working hard, because they are burdened with the heavy responsibility of localizing and carrying forward the SU-27. Cheng Luoma has no other political tasks except for the J-7 series, and he has obtained some of the Israelis' telex technology, and the J-10 is hulala, of course, it is extremely brisk.

However, China's three-axis and four-redundant digital fly-by-wire control system is not perfect, and Zhang Chao's sacrifice has a lot to do with the system, and has nothing to do with blocking and blocking half a dime. J-15 uses the same control system as J-11B, when the landing hook the blocking cable, the system suddenly failed, don't forget, when the fighter touches the ground, the nose is slightly raised, the flight control system fails, the fighter is like a grumpy wild horse raised its head suddenly, Zhang Chao subconsciously pressed the lever to keep the fighter, only the pressure rod let the front wheels land to avoid damage to the fighter. But in the circumstances of that time, the fighter was already out of control.

What is sad is that Zhang Chao died after ejection because the ejection conditions were far below the minimum requirements, and his whole person was almost ejected towards the ground, while the fighter plane stopped raising its head after he ejected, and the front landing gear landed, and in the end it was only slightly damaged. If Zhang Chao ejected at the first time, he had a high probability of surviving, but he finally chose to save the fighter with his life.

Objectively speaking, if you want to compare, the flight control used by the J-10 is much more reliable than the one used by the J-11B in the early stage.

Let's get back to the story of Li Zhan. He knew very well what was wrong with the SU-27, so he knew that the most terrible situation was a flight control failure. There is no mechanical backup for this long-legged Su, even if there is, just the problem of loving to raise his head and bow his head violently, if you really encounter it, you should hurry up and parachute to save your life, otherwise you will have to play with the goddess between raising your head and lowering your head.

According to Nie Jianfeng's step-by-step instructions, Li Zhan slid onto the runway, pushed the throttle and slid to the normal take-off speed of 24, then retracted the throttle and braked, and completed the first sliding training.

When driving out of the runway, Nie Jianfeng said, "I'm really afraid that you will pull the lever and take off." ”

Li Zhan said with a smile, "There is really such an impulse, anyway, there is you." ”

"Don't mess around, I'll tell you, I'm an instructor now, you're a student, you have to listen to me, dare to violate my instructions, I will never give you a pass, you continue to drive Jianqi to earn those three melons and two dates." Nie Jianfeng threatened.

He knows Li Zhan too well, do you think he doesn't dare to fly directly? He took off a few laps into the air, and Nie Jianfeng even dared to guarantee that the leader of the 101st Regiment would reprimand a few words at most.

As soon as Li Zhan heard this, he hurriedly said, "Don't don't, don't, Instructor Nie, can't I resolutely obey orders?" In short, whatever you say is what it is. ”

"That's pretty much it. Alright, let's go back, it's time for the next one. ”

"One more lap I'll run?"

"No way!"

Driving back to the tarmac, Li Zhan could only sigh and get off the plane, watching Yang Jinshan climb onto the cockpit like a New Year, but what he envied was Nie Jianfeng - this kid can always sit in the back cabin. From the first drive, the recorder of the tower began to calculate the time for him to pull the rod. One sits for at least half a day, and the tie-up fee is transferred and paid by the 73rd Division, and their instructors also have a travel allowance paid by the 2nd Division.

Li Zhan suddenly realized that it was quite good to be an instructor, and when he thought that he was a flight expert in J-7E, his mind became lively.

Why don't you go to Dongkuchang Station to work part-time as a part-time teacher?

However, when he thought of the distance of 500 kilometers, he dispelled his thoughts, being a man is not like this, being a pilot is not like this, and being a pilot of the Air Force is not like this.

I have nothing else to do this morning, I will run again in the afternoon, and I will be familiar with it tomorrow for another day, and the day after tomorrow I will start arranging training with flying. There are four instructors and four SU-27UBKs to carry out exercises at the same time, and the efficiency is quite high. Thinking that there was still a summary of the "228" topic, he planned to go back to the "228" office to work for a while, but Pei Lei came over at a gallop.

"Captain!" Pei Lei didn't get out of the car, and shouted excitedly at this side, "Captain, get in the car!" Your girlfriend is here, at the head of the regiment! ”

Li Zhan was stunned for a moment, "What? What girlfriend? ”

"Get in the car, get in the car, the political commissar is also back, it's all at the head of the regiment, hurry!" Pei Lei shouted excitedly.

Li Zhan hurriedly got into the car with his helmet, although he was confused.