Great Power Fighting Falcon

On August 15th, all the personnel and equipment for the logistics support were in place, and all the preparation work on the maintenance side was completed. Li Zhan's idea of ​​completing the modification training within a month was definitely in vain.

The simulated cockpit needed for modification was the last one to arrive. The Second Division used it until the new simulated cockpit assigned to them by their superiors arrived before sending the old one over. The 73rd Division not only picked up second-hand aircraft, but also picked up almost everything.

Probably because Qi Hong already knew about Li Zhan poaching him. It’s not surprising to follow the procedure strictly and give you some color to see. Otherwise, it’s not impossible to pull you over first if I know you are anxious.

Li Zhan had to face the reality, even though he wanted to form 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 pressure than ever before on tight deadlines and tasks. The third brigade modified the J-7E and was upgraded from a training brigade to a fighter brigade. They started training directly. However, the SU-27 fighters of the first brigade (the King of Destruction brigade) had been parked on the ground for more than half a month. Li Zhan could only stare anxiously.

The only good thing is that during this half-month period, 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 SU-27 fighter theory to the Destruction King Brigade, and the soldiers also It's very powerful, and it chews through those boring theoretical data.

Relatively speaking, it is much easier for them to modify the SU-27 now than the first batch of predecessors who modified this model. You must know that not only the teaching materials were in Russian, but also all the places that needed to be marked on the fighter plane were in Russian. Before the modification, I had to learn Russian, so the people who participated in the modification of the SU-27 were very proficient in Russian.

Fang Chenghe is one of them. Until now, he has no pressure at all to talk to Russians casually.

After another week in the simulated cockpit, Li Zhan finally received the order to conduct practical training in the last week of August. After a series of preparations, on August 25th, the Destruction King Brigade began ground sliding training.

Due to the heavy training tasks, the Second Brigade and the Third Brigade moved to the East Kuchang Station for training, and the North Kuchang Station became the exclusive territory of the Destruction King Brigade.

A group of sixteen fighter planes is only eight fewer than an ordinary flight group. Moreover, these are sixteen heavy fighter jets, not comparable to the original eighteen light fighter jets. In terms of maximum takeoff weight, sixteen SU-27s are almost three times the same number of J-7s.

"Just follow the procedure and be careful to apply the brakes." Nie Jianfeng in the back cabin said to Li Zhan.

Li Zhan was sitting in the front cabin, looking at the console full of instruments and performing pre-flight inspection procedures. The cockpit of the early models of SU-27 is also in a terrible state. It is not much neater than the J-7EG, and may even be worse than the J-7EG. Don't even think about it. It's all about appearance, full of the rough and arrogant style of an old man - as long as it can be used. On the right side is the radar display screen, which barely overlaps with the advanced one.

The batch of SU-27s handed over by the Second Division have been improved twice. The first time was Chineseization, and the second time was the replacement of new domestically produced Doppler airborne radars. This makes the SU-27 easier to use. In the early days, because Russia did not sell the source code of the fire control system, these flankers were unable to use domestically produced thunderbolts and other ammunition, and they were not able to access our army's identification friend or foe system. As a result, they became just fakes for a long time, and they were just used to scare people. people. Later, these problems were solved, and the imported flankers truly became combat effective.

Li Zhan followed the steps carefully and reported, "The pre-flight inspection of the two crutches is completed."

Nie Jianfeng turned his head and looked at the ground controller at the visible position on the right wing. He saw him raising the red flag. Nie Jianfeng gave Li Zhan the command, "Start the left engine."

"Start the left engine."

The left driver drove smoothly.

Nie Jianfeng checked the status of the left engine, confirmed that it was starting normally, and then ordered, "Start the right engine."

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

The SU-27 has a large fuselage and a large take-off weight, and can be equipped with a strong independent power supply, so it can often be driven without relying on ground power vehicles. However, under normal circumstances, ground power vehicles will still be used to assist.

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

"Close the canopy."

The canopy is slowly lowered.

"Unlock the front wheel steering."

"Unlock the front wheel steering."

"Throttle lever idle position, start coasting."

"The throttle lever is in the idle position and starts to coast. Damn it, the thrust is so strong." Li Zhan quickly pressed the brake button on the operating lever to brake.

Nie Jianfeng laughed and said, "You think it's still a J-7? The thrust of one AL-31F is equal to two WP-7Ps. Don't you know how powerful the thrust is? Why are you told to pay attention to the brakes? If you don't pay attention, you will run onto the grass. ”

"Aren't you used to being poor? Haha, I used to drive a 1.6-displacement muscle car and suddenly it killed eight cylinders of a 6.0-displacement muscle car. It's normal to have poor throttle control." Li Zhan said with a smile.

Nie Jianfeng said, "In the future, don't turn on the afterburner all the time. Once the afterburner is turned on and you add a dive angle, you can easily reach Mach 1.5."

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

"This is the characteristic of third-generation aircraft. Su Liangqi is still relatively difficult to control as you slowly adapt." Nie Jianfeng said.

After studying the theory, the experience gained from the army's use in the past ten years, and the response plans to 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 vertical wire control and horizontal mechanical transmission. The early prototypes developed for this aircraft used mechanical transmission control. Later, an accident exposed the problem and a fly-by-wire system was installed. This resulted in the formation of such a hybrid transmission control system.

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

The reason why the SU-27 is difficult to control refers to the fact that when the aircraft's pitch attitude changes, it is very easy to exceed the flight envelope, causing stall overload and rapid loss of kinetic energy. If it is at a low altitude, it is very easy to cause a crash.

People often say that the defect of SU-27 is rickets. In fact, rickets were no longer present when mass production was completed. The mass production machine has solved the problem of insufficient body strength.

What was terrible was the lifting body structure, which was unprecedented at the time. Because of the design of the lifting body and the side strips, a phenomenon is caused - the nose of the aircraft is suddenly raised with a slight pull, and the overload is five or six G at once. Generally, fighter planes only have about two G's in this situation, which shows how powerful the SU-27's head-up overload is.

In this case, the pilot's first reaction must be to push down the nose of the aircraft by pressing the stick, but the flight control system will automatically intervene to make adjustments, which will cause the aircraft body to vibrate back and forth, and then disintegrate in the air. This is also one of the reasons why people are misunderstood to have rickets. In fact, it has little to do with the strength of the body structure.

But after the bloody lesson, Maozi's design team learned the hard way and installed a fly-by-wire control system on the SU-27. Why is it longitudinal? The purpose is to solve the problem of the pull rod rising sharply. In fact, the simplest and most reliable way is to change the aerodynamic layout. However, in order to obtain a long range of 4,000 kilometers and excellent maneuverability, Maozi's design team refused to change the aerodynamic layout. Their persistence also created a great fighter aircraft in the history of world aviation weapons, and later achieved economic benefits beyond imagination.

Why did it take Shen Hoy so many years to domestically produce the SU-27? Lockheed Martin’s J-10 was already equipped with troops in 2004. Your big boss is still trying to develop the SU-27? The J-11A is assembled with imported parts, while the J-11B is an improved version that is completely domestically produced. Therefore, it is not known how much more advanced the B-type is than the A-type.

Why didn't Type B come off the production line until 2008? It was four years later than the J-10, which was completely independently developed!

Because Russia not only refuses to sell the fire control system code, but also refuses to sell the crucial flight control system. What I give you is a production license for 200 aircraft, and I will provide the key systems. Why do you want codes or flight control?

The flight control set that Maozi developed back then was to solve the problem of the SU-27's lifting body characteristics causing it to jerk up and down. For this reason, they sacrificed many test pilots and paid a heavy price.

Since Maozi refuses to sell, then do it yourself. Shen Hoy was gnawing at this bone over the years, and paid a heavy price, and finally came up with a three-axis, four-redundant digital fly-by-wire control system that was more advanced than Maozi. The hybrid telex system used by Maozi on the SU-27 has a lateral and horizontal mechanical rod system, which is heavy, bulky, and too complicated.

It is in line with that sentence: Whatever is restricted, we develop well and better than others. Whatever can be easily obtained, there has been no progress after decades (for example, the automobile industry is like shit).

Therefore, in fact, we wronged Shen Hoy in those years. They have been working hard because they are burdened with the important task of localizing the SU-27 and promoting it. Cheng Loma had no other political tasks except to develop some J-7 series. He also obtained some telex technology from the Israelis and was able to develop the J-10. Of course, it was extremely brisk.

However, the three-axis four-redundant digital fly-by-wire control system developed by our country is not perfect. Zhang Chao's sacrifice has a lot to do with this system, and has nothing to do with blocking the half-cent demand. The J-15 uses the same control system as the J-11B. When the arresting cable was hooked during landing, the system suddenly failed. Don't forget, the nose of the fighter plane was slightly raised when it touched the ground, and the flight control system failed. , the fighter plane reared up like a violent wild horse, Zhang Chao subconsciously pressed the lever to protect the fighter plane. Only by pressing the lever to let the front wheel touch the ground can the fighter plane be prevented from being damaged. But under the circumstances, the fighter plane was out of control.

What is sad is that Zhang Chao died after ejection because the ejection conditions were far below the minimum requirements. He almost ejected towards the ground, and the fighter plane stopped raising its head after he ejected, and the nose landing gear landed. In the end, it just Minor damage. If Zhang Chao had ejected immediately, he would have survived with a high probability, but in the end he chose to save the fighter plane with his life.

Objectively speaking, if we want to compare, the set of flight controls 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 the fatal problem with the SU-27, so he knew that the most terrifying situation would be a failure of the flight control. There is no mechanical backup for this long-legged Su. Even if it does, he likes to raise his head and lower his head suddenly. If it really happens to him, it is better to jump out of the sky to save his life. Otherwise, he will be in trouble every time he raises his head and lowers his head.

Following Nie Jianfeng's step-by-step instructions, Li Zhan slid onto the runway, pushed the accelerator and taxied to the normal take-off speed of 240, then closed the accelerator and braked, completing the first taxiing training.

As they drove off the runway, Nie Jianfeng said, "I'm really afraid you'll pull the lever and take off."

Li Zhan said with a smile, "I really have such an impulse. Anyway, I have you."

"Don't mess around. I'm telling you, I am a teacher now and you are a student. You have to listen to me. If you dare to disobey my instructions, I will never give you a pass. You can continue to drive the J-7 and earn those three melons and two dates. Come on." Nie Jianfeng threatened.

He knows Li Zhan too well, do you think he doesn't dare to fly directly? After he took off and turned around a few times, Nie Jianfeng could even guarantee that the leader of the 101st Regiment would only give him a few words of reprimand.

When Li Zhan heard this, he quickly said, "No, no, no, no, Teacher Nie, can't I just obey the order resolutely? In short, whatever you say will be what you say."

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

"Shall I run another lap?"

"no!"

After driving back to the tarmac, Li Zhan could only sigh and get off the plane. Watching Yang Jinshan climb into the cockpit as if celebrating the New Year, what he envied was Nie Jianfeng - this kid could always sit in the back cabin. From the first time he drove, the tower recorder began to calculate the time for him to draw the lever. Each ride lasts for at least half a day, and the lever fee is paid by the 73rd Division, and their teachers also have a business trip allowance paid by the 2nd Division.

Li Zhan suddenly realized that being an instructor would be quite good. When he thought that he was an expert on J-7E flight, his mind came alive.

How about going to Dongkuchang Station to work part-time as a teacher?

But when he thought about the distance of 500 kilometers, he gave up the idea. Being a human being is not like this, being a pilot is not like this, and being a pilot in the Air Force is not like this.

I have nothing else to do this morning. I will do another taxiing trip in the afternoon. I will have another day of familiarization tomorrow, and I will start arranging flying training the day after tomorrow. There are four instructors and four SU-27UBKs are practicing at the same time, which is quite efficient. Thinking that he had not yet written a summary of the "228" project, he planned to go back to the "228" office to work for a while, but Pei Lei drove over at a fast speed.

"Captain!" Pei Lei didn't even get out of the car and shouted excitedly, "Captain, get in the car quickly! Your girlfriend is here and she's at the group leader's place!"

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

"Hurry up and get in the car. Before we get in the car, the political commissar is back and they are all with the regiment leader. Hurry up!" Pei Lei shouted excitedly.

Li Zhan quickly got into the car with his helmet in hand, even though he was confused.