The No. 01 black ribbon finally appeared in everyone's field of vision.

Chen Ming held the telescope and looked out with his head held high, and saw the No. 01 black ribbon falling down like a duck that suddenly died in the air.

Li Zhan began to make changes.

Three thousand meters was more than enough for him, and he changed his tailspin at a lower altitude. The stall tailspin sounds scary, but in fact the stall tailspin is a must-have ability for every pilot. At the beginning, in order to study the method of change, the predecessors paid a lot, even the price of their lives. Today, the army has developed a very effective approach.

Li Zhan has been thinking about whether there is a more direct and even tactical way to change for pilots with better flying skills. He thought about it for a long time, and there were many more simulations in his mind. Previously, it was not easy to work in combat units, but now there are many opportunities.

He quickly settled on a plan and began testing a new way to change it – not a two-engine shutdown and a restart, of course.

It's too easy for the Black Ribbon to change the tail spin, to be exact, a little easier than other fighters. The full-motion canard wings and full-motion vertical tail give the black ribbon extremely strong mobility. Li Zhan began to change out according to the usual operation, and the black ribbon suddenly returned to its posture obediently like a good baby.

However, Li Zhan immediately interrupted and changed, and the black ribbon suddenly returned to the tail spin state.

Chen Ming was stunned for a moment, and suddenly said, "What is he going to do?" Hurriedly called, "Dong Yu Dong Yu, what happened to you?" ”

If it wasn't for the problem with the control system, how could it be suddenly interrupted?

Li Zhan said, "No problem, I'll try another way to change it, please rest assured." ”

As he spoke, he carefully adjusted the position of the joystick, carefully testing the plane's feedback. The altitude has been falling rapidly, and now it is only a little more than a thousand meters high.

After having a grasp in his heart, Li Zhan quickly manipulated the rudder and controlled the nose of the plane first, the tail was still rotating, and the plane changed from rolling tail spin to rotating horizontally with the nose as the center point. After confirming that the nose is under control,

In this state, the tail of the aircraft is rotating at high speed, and the pointing of the nose is changing at high speed with the tail, and the speed of the fall has been eased in a very short time because the fuselage has been flattened. In air combat, if the aircraft can be made to present the current controllable attitude in the dogfight, it can almost be said that it can seize the initiative in an instant.

Chen Ming and the others were stunned, this hand was so beautiful! Chen Ming has been engaged in test flights for so many years, and it turns out that he is also working in combat units, and he suddenly keenly saw the actual combat value of this maneuver, which is similar to a falling leaf drift but is not a standard falling leaf drift.

The head of the fuselage made by Li Zhan is obliquely downward, and the tail of the fuselage is obliquely upward, which is obviously different from the falling leaves.

In fact, the change of the plane's attitude to the present means that the danger of tailspin has been basically eliminated.

Suddenly, the nose of the No. 01 Black Ribbon slammed down, and at the same time the rotation of the tail stopped, and the plane turned into a vertical dive in a very short time!

"Oh!"

There was an exclamation from the tower.

Where is this novice, it's clearly an old driver, no, it should be said that it's more powerful than the old driver, on this road sense and this driving technique, professional racers are not enough to see.

It's even accelerated!

Li Zhan pushed down the throttle stick, and the No. 01 black ribbon accelerated to the ground like a dive bomber during World War II. The data representing the relative height was declining at an accelerated rate, and in front of Li Zhan's eyes, what he saw was that the entire earth was swooping towards him.

People with slightly inferior psychological quality are likely to have a nervous breakdown under such strong pressure, which is more shocking than watching a huge meteorite fall from the sky.

At this time, people's eyes will deceive, you feel that you are about to hit the ground, in fact, there is a certain redundancy in height, but when you feel that there is still space, maybe after the blink of an eye, it will be destroyed by kissing the earth.

Neither blindly trust the eyes nor rely on the data alone, the pilot needs to make a quick and accurate judgment based on the data obtained from all sources, and then decisively decide the next step of the maneuvering action, any deviation will cause irreversible consequences.

The height is three hundred meters!

Li Zhan began to pull the lever back to lift the nose of the plane, and the huge overload pressed him to the seat, and the air marks cut out of the wingtips were clearly visible. The engine roaring fiercely at high power and the sudden increase in air resistance gave the engine a hint of unwillingness. In the midst of the powerful overload, the fuselage emitted some structural abnormal sounds, and the monitoring instrument showed that the instantaneous overload once reached nine G!

A flash of black vision made Li Zhan more vigilant, and after pulling the lever back hard, the nose of the plane was lifted up tamely although it was difficult, and the tail slowly sank gave Li Zhan quite enough confidence. This means that the plane is resuming level flight in accordance with his instructions.

Black Ribbon No. 01 completed the "L" maneuver vertically downwards at a height of about fifty meters above the runway take-off position, exactly in the opposite direction of the "L" at takeoff.

The most stunned thing is that Li Zhan actually slowed down and landed directly on the landing gear!

Vertical dive, ultra-low altitude, pull up and flatten and land directly, what the hell is this operation!

It wasn't until the No. 01 black ribbon released the deceleration parachute that Chen Ming and others reacted and hurriedly arranged the follow-up security work. Li Zhan wanted to continue flying, but after two extreme project test flights, the aircraft needed to be inspected, and the data needed to be exported and analyzed, step by step. It is not advisable to blindly test fly.

In general, this adaptive flight allowed Li Zhan to make a test flight of a high-risk project, flying two "L" routes in opposite directions, mainly far exceeding the previous ceiling data, and then flying out of the previous maximum overload data by the way.

When Yi Xiaoyi took people to export various data and saw that the instantaneous overload reached nine G, he was going crazy, and seriously suspected that there was a problem with the monitoring instrument. He walked over and asked Li Zhan, who was holding a flying helmet and talking to Bao Guanhua.

"Li Tuan, the monitoring instrument shows that the instantaneous overload has reached nine Gs, which is the moment when the vertical dive is pulled up, what do you personally think?" Yi Xiaoyi and Li Zhan are old friends, but he can't believe that someone can withstand an overload of nine G's, a great eight G's.

Li Zhan and Bao Guanhua looked at Yi Xiaoyi, Li Zhan took off his white labor protection gloves and held them in his hand, and said, "There should be, I have done ten G overloads, and I am quite familiar with nine G overloads, and I personally feel that there should be." ”

"Ten Gs?" Yi Xiaoyi's eyes are about to pop out, and the memory is ten Gs!

Li Zhan said with certainty, "Yes. ”

Bao Guanhua said to Yi Xiaoyi with a smile, "Li Zhan did a test when he was in the training base, and he was still able to maintain the state and control the fighter in the overload of ten Gs. ”

"My God, Li Tuan, you're too powerful." Yi Xiaoyi was surprised, "It seems that we can carry out the ultimate overload test flight." ”

Li Zhan smiled and said, "Arrange it." ”

Yi Xiaoyi went in high spirits.

Bao Guanhua and Li Zhan tacitly paced to the side while continuing to talk.

Looking back at the No. 01 black ribbon, twenty or thirty technicians and maintenance personnel surrounded her, and their hands were busy. Li Zhan said, "Today is the first test flight, and there are many situations that I am not sure of in my heart. The test flight plan called for a test flight of all major projects to be completed within a month, and I think it was okay in terms of time, but I was worried about the number of prototypes. ”

After listening to this, others may think that Li Zhan is pretending to be forced and can die if he doesn't drop the plane, but in fact, this is a very real difficulty. Without a certain number of prototypes, many high-risk flight test projects can not be done, the more well-known example is the Russian Su-37, only one prototype was built, so many test flight projects can not be carried out, directly apply the Su-27 flight envelope.

The problem is that Black Ribbon does not have a pre-class fighter to refer to.

Bao Guanhua nodded solemnly, "The factory has realized this problem and is working overtime to manufacture follow-up aircraft." But far water can't save near fire, and you still have to figure out how to use the limited prototype to complete the test flight in the next month. ”

Li Zhan thought for a moment and said, "How much can I use?" ”

"Two, it's better if you finish it with No. 01." Bao Guanhua said.

Li Zhan nodded slightly and said, "I'm not saying that you have to drop the plane, you need at least two planes after the test flight frequency goes up, so as to ensure the continuity of the test flight work." But despite this, two planes are still not enough. ”

"Do you have a solution?" Bao Guanhua stopped and asked.

Li Zhan looked at the environment in the outfield and said, "There is a way, as for whether it is feasible or not, the R&D team needs to make an idea." ”

"Tell me."

Li Zhan said, "Separate the systems that can be separated and replace them with other aircraft." I think the No. 037 J-7EGGH is good. ”

Bao Guanhua's eyes lit up and said with a smile, "It's still your kid's flexible brain." In my opinion, it is feasible that some of the functions of the avionics system can be separated and put on this aircraft for testing. But can't other planes work? ”

"Absolutely." Li Zhan said with a smile, "I'm mainly thinking about the cost, No. 037 still has the value of use, and the Flying Shark Force is estimated to not need to be used anymore after I leave." Instead of waiting for scrapping, it is better to make the best use of things. Moreover, No. 037 has been improved many times before and after, and now it is a test machine used by the Chengluoma Plant to test carrier-based flight technology, and the platform is good. ”

Bao Guanhua laughed, "The little prince of the lever is worthy of his name, and the account is very clear." ”

"Old leader, you have won the award." Li Zhan said modestly.

Bao Guanhua said, "Then do it." I'm going to coordinate the plane, and you and the R&D team are looking at how to make the most of it. ”

Li Zhan agreed.

Bao Guanhua asked, "The weather report of the meteorological observatory will not be very good in the next few days, are you sure to do a test flight under complex meteorological conditions?" ”

Of course, the finalization of the aircraft includes flights in various meteorological conditions, the same test flight project, but the meteorological environment will be more harsh.

Li Zhan said with a smile, "Old leader, as you know, I flew out of the combat training standards under the complicated meteorological conditions that the troops are currently imposing, and of course I am sure. I'm just going to talk to you about taking advantage of the complicated weather that is rare these days to complete the test flight in this environment. The original test flight plan was to be adjusted. ”

"It's not a problem to adjust the test flight plan, I'll coordinate these work." Bao Guanhua said.

After chatting a few more words, Li Zhan took the flight helmet and went to the No. 01 black ribbon. Of course, it will not be a matter of converting the No. 037 J-7EGGH into part of the avionics technology test platform for the fourth-generation aircraft, but it will take off again.

After discussing with Chen Ming and Yi Xiaoyi, Li Zhan decided to conduct a maximum airspeed test flight next. After flying ten overloads, the body of the No. 01 Black Ribbon showed no structural damage, which means that the fourth-generation aircraft can withstand this overload. The R&D team was overjoyed with this result and proved that their design was a success.

The strength of the body has always been a problem that makes R&D personnel very conflicted. If you want to increase the strength of the body, the empty weight will inevitably increase, although a variety of lightweight composite materials emerge in an endless stream, but this law still exists. The average fighter can withstand seven or eight G overloads, and in extreme cases, it is no problem to fly nine G overloads. There are very few fighters that can withstand ten G overloads, and to be precise, there are very few fighters that can still operate normally after ten G overloads.

Outliers like the Soviet MiG-25 take certain types of performance to the extreme, but the flaws are also very obvious, more like a fighter used to set world records.

The emergence of the fourth-generation aircraft in the field of aviation materials is of epoch-making significance, representing the beginning of a new era. In the past many years, many people have shouted that China's material industry is not up to standard, resulting in the inability to make advanced engines, good propellers, and so on.

This problem exists, the cornerstone of the material industry is basic industry research, for a long time China has a certain deficiency in this regard, after decades of accumulation, while in the new technology research and development to achieve corner overtaking, and finally concentrated on the fourth generation of aircraft explosively presented.

But research and development is one thing, and whether the design goals can be met when applied to an aircraft is another. Today, Li Zhan proved their success with an overload of ten G's.

With the support of strong confidence, the R&D team dared to let Li Zhan continue to do the test flight of maximum airspeed, which is also closely related to the strength of the airframe.

To do the maximum speed test flight, it was necessary to transfer to the second test flight airspace, and the various ground observation points and emergency rescue detachments stationed there were notified and quickly entered their respective posts.

After more than two hours of preparation, Li Zhan once again boarded the plane and manipulated the No. 01 black ribbon to the take-off position. The aircraft was loaded with a specified weight of fuel and took off at a standard weight for a test flight. This is followed by test flights at various weights, often divided into several components under a project.

The finalized test flight of a new fighter usually lasts for two or three years, four or five years, or even seven or eight years, precisely because the test flight test work is a very complicated and highly dangerous critical stage.

The No. 01 black ribbon roared up again, and this time Li Zhan took off regularly.