Dominate South Asia

On the other hand, it is the operating system. The previous second-generation aircraft were all hydraulically operated. Even the Soviet third-generation aircraft, the MiG-29, was hydraulically operated. The Su-27 was a fly-by-wire system, but it was a three-redundancy simulation. telex.

Now, the advanced control is digital telex. Only with digital telex, the flight control computer can be used to handle various situations unexpectedly through the flight control program. This is a new field.

The No. 10 project developed by Chengdu Aircraft adopts a canard layout. This layout is inherently unstable, which requires the use of digital telex to control the aircraft stably. Therefore, Chengdu Aircraft needs to overcome the problem of digital telex. Difficulties, they have built a test bed called Iron Bird to study digital telex systems.

Historically, Feibao first used an analog telex with three redundancies, and then switched to a digital telex with three axes and four redundancies in the Feibao A. Now, after seeing the flight control of advanced military aircraft, the West Aircraft also decided to use three-axis four-degree digital telex and jointly developed it with Chengdu Aircraft. After the development was completed, both parties shared these technologies.

Now, hydraulic operation is used to conduct airframe test flight. After the airframe test flight is completed, the telex system has been developed and will be replaced with digital telex.

Hamad couldn't help but frowned, as if he had taken a detour.

Hydraulic operation is very different from digital fly-by-wire. If we do a test flight now, then after the fly-by-wire system is equipped, many subjects may have to be re-tested, which will cause waste.

"We are now conducting test flights and can master first-hand flight data. When the time comes, we will write the fly-by-wire flight control software, which will be more accurate and effective based on the data obtained from these flights."

Listening to Chen Yijian's words, Hamad nodded: "Yes. This is also a good idea."

After all, they built this aircraft. From the beginning of the design, they have been constantly exploring and mastering all its functions. Through test flights, they have thoroughly mastered the flight data, and then they will program the digital telex. Easier and reduces the risk of digital telex flights.

after all. Digital telex is very dangerous. Many countries have experienced crashes due to problems with digital telex during test flights. Even the most advanced F-22 in the United States is no exception.

"The test flight of any fighter plane is full of hardships. Mr. Chen, did this fighter plane have a lot of twists and turns during its first test flight?" Mhamad asked.

He had already remembered that later documents recorded that this fighter plane once had its rudder fly off. However, there are two theories. One is that it flew off on the first test flight. The other kind is that after a few years, when you want to study some subjects, you will fly away.

Mhammad is not a scientific researcher and cannot find out which statement is correct. Now, seeing that this kind of fighter plane has begun test flights, I can't help but ask.

"Yes, there was a difference of 60 kilometers between the front and rear speedometers. The front and rear speedometers were different. There was also a fire alarm light flashing. It was later found to be a false signal." Chen Yijian said: "It was Captain Huang who was conducting the test flight at that time. Everyone I was all sweating."

"Is the rudder okay?" Mhamad asked.

Rudder? Chen Yijian said: "It's okay. The rudder has always been intact. If the rudder gets stuck, there is no other option except parachuting."

The Flying Leopard is a single-vertical tail fighter aircraft with only one rudder. If the rudder fails, it will fly. Then the plane can't turn. Of course, everything has exceptions. The Israeli Air Force had a collision during flight training, and half of the wings of a fighter plane fell off. The pilot was still flying the plane without wings, but it suddenly flew back.

Five thousand meters in the air.

"Check the status of each meter. Prepare for a high-speed test flight." The ground commander's voice came from the earphones.

The Flying Leopard fighter is a supersonic fighter. In modern times, low-altitude and high-speed penetration is already an effective means of penetration. The Flying Leopard must have this ability.

During the test flight, the subsonic flight will be carried out first, and then it will gradually transition to supersonic speed. The test flight in the previous stage is over, and now the supersonic test flight will begin.

"Understood." Huang Bingxin's eyes scanned all the instruments. All the instruments were normal, so he aimed at the airspace and turned on the afterburner.

The two Spey engines exploded to their maximum thrust, and the flames at the tail became hot. The fighter jet began to accelerate continuously, and the pointer of the speedometer in front turned to the right.

When the sound barrier is broken, you can feel the whole body tremble, and then continue to accelerate!

What's going on? It seems like the fighter plane is shaking a little? Huang Bingxin felt that the muscles on his face were shaking. Could it be that he encountered a special airflow?

"Lao Yang, what's going on?" Huang Bingxin asked the navigator behind.

"I don't know, our fighter plane is shaking badly." Yang Buxin said from the back cabin.

The fighter plane is trembling! After exceeding the speed of sound, the fighter plane began to tremble! This shows that the airframe has serious design problems, and supersonic speeds induce tremors!

All the instruments in front of Huang Bingxin were trembling, and all the indicators were unclear. He stretched out his hand to turn off the afterburner and slow down the fighter plane.

At this moment, a bang came from the rear.

"Lao Yang, what's going on?" Huang Bingxin asked: "Can you see smoke coming from the tail?"

Huang Bingxin was most worried about the engine catching fire.

"No, the tail is normal." Yang Buxin said. Because the back blocked his view, he tried to turn his body, but he couldn't see the rudder at the back. He could only see that there was no black smoke behind him.

At this time, Huang Bingxin's hand had reached the front panel, turned off the afterburner, and then stepped on the right rudder. Oops, there was no response!

The familiar feedback force came from the joystick. Pulling back, the fighter followed up, pushing forward, lowering, and gently pressing the stick. The fighter began to turn sideways, but the rudder did not respond!

It must be that the rudder at the back was faulty! Huang Bingxin frowned and said, "Old Yang, the rudder is faulty. I'm flying the plane and must drive it back. If something unexpected happens, you will parachute and report this news to Mr. Chen."

The huge vertical tail is also connected to a very high frequency communication antenna. At this time, the buzzing sound of the radio in the headset has disappeared, indicating that even the antenna has failed.

"I'll fly back with you!" Yang Buxin in the rear cabin also looked determined.

When the fighter plane slowed down, it finally stopped shaking. However, without the rudder, the route back became extremely difficult.

The rudder is a rudder on the vertical tail. When it turns right, it blows the airflow to the right. Under the reaction force, the tail will turn to the left, and the plane will turn. When a large angle is needed, the plane needs to turn sideways, relying on the combined force of lift and gravity to provide centripetal force.

Now, without the rudder, the steering can only rely on the two engines at the tail. Changing the thrust of the two engines, one large and one small, can make the nose deviate at a small angle.

There is only one chance to aim at the airport runway!

Huang Bingxin felt sweat constantly flowing down his back. It doesn't matter if he sacrifices himself. He has this awareness since the first day he became a test pilot. However, he needs to drive the plane back and let the scientific researchers study it to see where the fault occurs, why this fault occurs, and find a solution!

"001, received, please reply." The commander in charge of the tower kept calling, but he didn't hear any answer, and he couldn't help but worry.

"Back, back!" At this moment, a person in the tower saw the fighter plane in the distance.

It was swaying, just like being drunk. Looking at this fighter plane, Chen Yiqian was suddenly shocked. What happened?

"Chairman, President, please leave here immediately. Our plane may have a malfunction." Chen Yiqian said.

The test flight of this fighter plane was full of twists and turns. Almost every 20 minutes, there would be a malfunction. Now many have been eliminated. Now it is flying swaying, maybe there is a big malfunction again!

Muhammad held a telescope in his hand and looked at the flying leopard in the sky. Sure enough, there was a missing rudder behind the vertical tail!

"The rudder has fallen off." Muhammad said, "Mr. Deng, it is more important to save people than planes. Let them parachute!"

The life of a test pilot is the most precious. Everyone has a family and children. In Muhammad's opinion, he never wants to hear that a certain pilot lost the opportunity to parachute and died gloriously in order to save a faulty plane and protect the country's property. If the plane is gone, it can be rebuilt, but if the people are gone, then they are completely gone.

"Yes." After hearing Mr. Deng's order, Chen Yijian immediately replied and asked someone to convey the order to the tower. At this time, the plane had already reached the opposite side of the runway, aimed at the runway, and landed.

It is a fearless spirit to sacrifice oneself to save the plane. Although Muhammad disagrees, he still admires it very much.

When the rear wheels of the fighter plane landed, there was no chance to change the course. Seeing that the fighter plane was accurately aimed at the runway, Muhammad showed an appreciative expression.

The front wheel touched the ground, the parachute was released, and the fighter plane was still sliding forward. It almost stopped at the end of the runway.

The fire truck on standby had already started over, and the ground crew carried the ladder and followed.

"Mr. Chen, I brought the fighter plane back for you." Huang Bingxin opened the hatch and came down the ladder. His face was pale and full of sweat. He was still very calm: "After our fighter planes went supersonic, they began to induce vibrations. As the speed increased, the vibrations would become greater and greater."

As a test pilot, he faithfully fulfilled his responsibilities.

Muhammad on the side was also moved. An advanced air force is not bought, but must have its own research capabilities. This requires the dedication of countless personnel, even at the risk of their lives. (To be continued ~^~)