Black Ribbon No. 01 finally appeared in everyone's sight.
Chen Ming held up the telescope and looked up, and saw the black ribbon No. 01 falling like a duck that suddenly died in the air. Even though Chen Ming had been doing test flight work for so many years, he couldn't help but shake his head when he saw such a rapid falling momentum.
A chill.
Li Zhan began to make changes.
The altitude of three thousand meters was more than enough for him, and he had recovered from spins at lower altitudes. Stall spins sounded scary, but in fact recovery from stall spins was an ability that every pilot must have. At first
In order to study the improvement method, the predecessors have paid a lot, and even paid the price of their lives. Now the army has formed a very effective method.
Li Zhan has been thinking about whether there is a more direct and even tactically valuable recovery method for pilots with better flying skills. He thought for a long time and had many simulations in his mind. Previously, he was in the combat unit
It’s not easy to experiment at work, but there are plenty of opportunities now.
He quickly finalized his plan and began to test a new recovery method - of course it was not the method of turning off both engines and driving again.
It is too easy for the Black Ribbon to correct its tail spin. To be precise, it is easier than other fighter planes. The fully moving canards and fully moving vertical tail give the Black Ribbon extremely powerful maneuverability. Li Zhan started to correct the tail spin according to normal operations.
, the black ribbon immediately returned to its posture obediently like a good baby.
However, Li Zhan immediately stopped and corrected, and the black ribbon suddenly returned to the tail spin state.
Chen Ming was stunned and asked immediately, "What is he going to do?" He quickly called, "Dong Yao Dong Yao, what happened?"
If there was no problem with the operating system, why would it be suddenly interrupted?
Li Zhan said, "No problem, I will try another recovery method, please don't worry the tower."
As he spoke, he carefully adjusted the position of the joystick and carefully tested the feedback of the aircraft. The altitude had been falling rapidly, and now it was only over a thousand meters high.
After feeling confident, Li Zhan quickly controlled the rudder and controlled the nose of the plane first, but the tail was still rotating. The plane changed from rolling and spinning to turning laterally with the nose as the center point. After confirming that the nose of the plane was under control,
In this state, the tail of the aircraft is rotating at high speed, and the direction of the nose is changing with the tail at high speed. Because the fuselage is flattened, the falling speed is alleviated in a very short time. In air combat
, if the aircraft can assume its current controllable posture during a dogfight, it can be said that it can seize the initiative almost instantly.
Chen Ming and others were stunned. This move was so beautiful! Chen Ming had been doing test flights for so many years, and he also worked in the combat force. He immediately saw this maneuver that was similar to the Falling Leaf Piao but not the standard Falling Leaf Piao.
Practical value.
The nose of the aircraft built by Li Zhan is tilted downward, and the tail of the fuselage is tilted upward, which is obviously different from falling leaves.
In fact, the change of the aircraft to its current attitude means that the risk of tail spin has been basically eliminated.
Suddenly, the nose of Black Ribbon No. 01 was pushed down sharply, and at the same time, the rotation of the tail stopped, and the aircraft became a vertical dive in a very short period of time!
"oh!"
There was an exclamation from the tower.
This is not a newbie. He is clearly an experienced driver. No, it should be said that he is better than an experienced driver. His sense of the road and driving skills are not enough for professional racers.
It actually accelerated!
Li Zhan pushed the throttle lever, and the No. 01 black ribbon accelerated towards the ground like a dive bomber during World War II. The data representing the relative height was accelerating downward. In front of Li Zhan, what he saw was the entire earth.
Pounce towards yourself.
People with poor psychological quality will most likely collapse under such strong pressure, which is more shocking than watching a huge meteorite fall from the sky.
At this time, human eyes can be deceiving. You think you are about to hit the ground. In fact, there is still a certain amount of redundancy in height. But when you feel there is still space, maybe in the blink of an eye you will kiss the ground and be destroyed.
.
You can neither blindly trust your eyes nor rely solely on data. Pilots need to quickly make accurate judgments based on data obtained from all channels, and then decisively decide on the next control action. Any deviation will lead to irreparable consequences.
Height three hundred meters!
Li Zhan began to pull the rear rod to raise the nose of the plane. The huge overload pressed him on the seat. The traces of air cut at the wing tips were clearly visible. The engine running at high power roared fiercely, and the sudden increase in air volume
The resistance gave the engine's roar a hint of reluctance. During the powerful overload, the fuselage made some structural noises, and the monitoring instrument showed that the instantaneous overload once reached nine G!
The flash of black vision made Li Zhan increase his vigilance. After pulling the stick back hard, the nose of the plane was raised tamely although it was difficult, and the tail of the plane slowly sank, which gave Li Zhan considerable confidence. This meant that
The plane complied with his instructions and resumed level flight.
Black Ribbon No. 01 completed a vertical downward "L" maneuver at a height of about fifty meters above the take-off position of the runway, which was exactly the opposite of the "L" direction during take-off.
The most shocking thing is that Li Zhan actually put it on the landing gear and slowed down for landing!
Vertically dive at an ultra-low altitude, pull up, level out and land directly. What the hell is this!
It wasn't until Black Ribbon No. 01 released the parachute to slow down that Chen Ming and others reacted and quickly arranged follow-up support work. Li Zhan wanted to continue flying, but after two extreme project test flights, the aircraft needed to be carried out
Inspection and data need to be exported and analyzed step by step. Blind test flight is not advisable.
In general, this adaptive flight allowed Li Zhan to conduct a high-risk and difficult project test flight. He flew two "L" routes in opposite directions. He mainly achieved a ceiling that far exceeded the previous limit data, and then incidentally flew beyond the previous limit.
The maximum overload data.
When Yi Xiaoyi and his people exported various data and saw that the instantaneous overload reached nine G, he went crazy. He seriously suspected that there was something wrong with the monitoring instrument. He walked over and asked what he was holding
Li Zhan in a flying helmet talking to Bao Guanhua.
"Li Tuan, the monitoring instrument shows that the instantaneous overload reached nine G, which was caused by a vertical dive. What do you personally think?" Yi Xiaoyi and Li Zhan are old friends, but he cannot believe that anyone can carry it.
It's overloaded by nine G. It's amazing eight G.
Li Zhan and Bao Guanhua looked at Yi Xiaoyi. Li Zhan took off his white labor protection gloves and held them in his hands, saying, "There should be some. I have done ten G overloads, and nine G overloads are considered safe."
It should be familiar and have a personal feeling."
"Ten G?" Yi Xiaoyi's eyes almost popped out. There are ten G in the memory!
Li Zhan said firmly, "Yes."
Bao Guanhua smiled and said to Yi Xiaoyi, "Li Zhan did a test at the training base. He was still able to maintain his condition and control the fighter under ten G overload."
"Oh my God, Li Tuan, you are so awesome." Yi Xiaoyi was surprised, "It looks like we can conduct an extreme overload test flight."
Li Zhan smiled and said, "Let's arrange it."
Yi Xiaoyi left in high spirits.
Bao Guanhua and Li Zhan walked aside in tacit agreement while continuing to talk.
Looking back at Black Ribbon No. 01, there were twenty or thirty technicians and maintenance staff surrounding her, their hands busy with work. Li Zhan said, "Today is the first test flight. There are many situations that I am not sure about yet."
.The test flight plan puts forward requirements that it is best to complete the test flights of all major projects within one month. I think there is no problem in terms of time. What I am worried about is the number of prototypes."
After listening to this, others may think that Li Zhan is showing off and can die without crashing the plane. In fact, this is a very real difficulty. Many high-risk and difficult test flight projects cannot be carried out without a certain number of prototypes. It is relatively well known that
An example is the Russian Su-37. Only one prototype was built, so many test flight projects could not be carried out. The flight envelope of the Su-27 was directly applied.
The problem is that Black Ribbon has no front-end fighter to refer to.
Bao Guanhua nodded solemnly, "The factory has been aware of this problem and is working overtime to manufacture subsequent aircraft. But water in the distance cannot save the fire in the near future. You still have to think of ways to use the limited prototypes to complete the tasks in the next month."
Test flight.”
Li Zhan thought for a moment and said, "How much can I use?"
"Two, it's best if you use No. 01 to complete it." Bao Guanhua said.
Li Zhan nodded slightly and said, "I'm not saying that the plane must be crashed. After the test flight frequency increases, at least two planes will be needed to ensure the continuity of the test flight. But despite this, two planes are still not enough."
"Do you have any idea?" Bao Guanhua stopped and asked.
Li Zhan took a look at the outfield environment and said, "There is a way. Whether it is feasible or not depends on the R&D team to make a decision."
"Talk about it."
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 he said with a smile, "You still have a flexible mind. I think it is feasible. Some avionics system functions can be separated and put on this aircraft for testing. But, can't it be done on other aircraft?"
"
"Of course." Li Zhan said with a smile, "I mainly considered the cost issue. No. 037 still has value. After I leave, the Flying Shark Army probably won't need to use it anymore. It's better to make the best use of it than to wait for it to be scrapped.
Used. Moreover, No. 037 has been improved many times before and after, and it is now a test aircraft used by the Loma Factory to test carrier-based flight technology. The platform is good."
Bao Guanhua laughed and said, "The little prince of the pull rod is well-deserved and his accounts are calculated very clearly."
"Old leader, you have given me the reward." Li Zhan said modestly.
Bao Guanhua said, "Then let's do it. I will coordinate the aircraft, and you and the R&D team will study how to make full use of it."
Li Zhan agreed.
Bao Guanhua asked again, "The weather station reported that the weather will not be very good in the next few days. Are you sure you can conduct a test flight under complex weather conditions?"
Of course, the finalization work of the aircraft includes flights under various weather conditions. It is the same test flight project, but the weather environment will be more severe.
Li Zhan said with a smile, "As you know, old leader, I have mastered the combat training standards under complex weather conditions now implemented by the army. Of course I am sure of it. I just want to discuss it with you. I will take advantage of the rare opportunity these days."
The test flight work in this environment was completed due to the complex weather conditions. The original test flight plan needs to be adjusted."
"Adjusting the test flight plan is not a problem. I will coordinate these tasks," Bao Guanhua said.
After chatting for a while, Li Zhan took his flight helmet and went to Black Ribbon No. 01. Of course, it would not be about converting No. 037 J-7EGGH into a partial avionics technology test platform for fourth-generation aircraft now, but soon.
It's about to take off.
After discussing with Chen Ming and Yi Xiaoyi, Li Zhan decided to conduct a maximum airspeed test flight next. After flying ten overloads, the No. 01 Black Ribbon body showed no structural damage, which means that the fourth-generation aircraft can withstand it.
This result made the R&D team overjoyed and proved that their design was successful.
The strength of the airframe has always been a conflicting issue for R&D personnel. If the strength of the airframe is to be increased, the empty weight will inevitably increase. Although various lightweight composite materials emerge in an endless stream, this rule still exists. Generally, fighter jets can withstand seven or eight G overloads.
, it is no problem to fly nine G overloads under extreme circumstances. Very few can withstand ten G overloads. To be precise, there are very few fighters that can still operate normally after ten G overloads.
Outliers like the Soviet Union's MiG-25 maximize certain capabilities, but their flaws are also very obvious. They are more like fighter jets used to set world records.
The emergence of the fourth-generation aircraft is of epoch-making significance in the field of aviation materials and represents the beginning of a new era. In the past many years, many people have cried out that my country's materials industry is not up to standard, resulting in the inability to produce advanced engines and engines. Good propeller, blah blah blah.
This problem exists. The cornerstone of the materials industry is basic industrial research. For a long time, our country has been deficient in this aspect. After decades of accumulation, it has also achieved overtaking in new technology research and development, and finally concentrated on fourth-generation machines.
It appeared explosively.
But research and development is one thing, and whether it can achieve the design goals when used on an aircraft is another matter. Today Li Zhan used a ten G overload to prove their success.
With the support of strong confidence, the R&D team dared to let Li Zhan continue the test flight at the maximum airspeed. This is also closely related to the strength of the aircraft body.
To conduct the maximum speed test flight, it was necessary to move to the second test flight airspace. Various ground observation points and emergency rescue teams stationed there received the notification and quickly entered their respective posts.
After more than two hours of preparation, Li Zhan boarded the plane again and maneuvered the No. 01 black ribbon to the take-off position. The plane was loaded with the specified weight of fuel and took off at the standard weight for a test flight. Next, there were also flights under various weights.
Test flight is often divided into several components under a project.
The finalized test flight of a new fighter aircraft usually lasts for two, three, four, five or even seven or eight years, precisely because the test flight is a very complicated and highly dangerous critical stage.
Black Ribbon No. 01 roared into the air again, and this time Li Zhan took off normally.