020 update for d-day

When Liu Yijiu heard that the pilot was fine and should be able to fly, he relieved a lot of self-blame in his heart.

However, this test flight still touched him very much. He found that many things were not completely controlled as he thought.

Why does this happen

It was obvious that the Cobra maneuver was done well at the beginning. Logically speaking, the output power of the engine was much stronger than the original engine, so there was no problem in completing the super Cobra maneuver. The backward flip behind also proved this problem.

Yin Qingyuan has too little information to give feedback.

Only when the fighter plane is thoroughly inspected and the test pilot is awakened can we draw a conclusion on why.

The wounded were transported away by ambulances and helicopters, and the fighter began to be dragged back to the assembly workshop for inspection. Liu Yijiu kept inferring in his mind what caused it.

"I'm waiting for your explanation. If the explanation is not good, take off your clothes yourself." Long Yaohua's cold eyes when he left made Liu Yijiu feel scared for the first time.

Yes, since this era, he has always felt insecure because he knows the changes in the country's top leaders and the direction of policy inclination. This sense of insecure is not because of fear, but because things that are too far away cannot be controlled by him, and he instinctively has a sense of crisis.

He has never been afraid of anyone.

Whether it is the old man, Long Yaohua, or Li Yunlong, even Ziyang Zhenren could not do anything to him.

The original Boss Hua was an obvious example.

This time, he discovered that there were many things that he could not do whatever he wanted. This was the Republic in the 1980s. Various foundations were backward, pilot training methods were seriously not scientific enough, and the intensity was not high enough. The material technology was backward, the processing and manufacturing technology was not good, and the fighter design ability was also not good.

Liu Yijiu was personally guarding the assembly workshop, so he wanted to know the test results of the fighter plane as soon as possible. At the same time, he also asked Li Rui to go to the hospital to take care of many wounded people in order to get the news as soon as possible.

After falling out of coma, Yin Qingyuan woke up several times after being rescued, but each time was very short. There was no way to effectively express the situation on the fighter plane. Time was too urgent at that time, so there was no time to report all the situations encountered. In addition, he had to concentrate on controlling the fighter plane, otherwise it would be a solution to the destruction of the plane.

"Director Liu, you'd better come and take a look." When the haggard Liu Yijiu was smoking and thinking about where the problem appeared, Zhu Houdao's eyes were also covered with blood.

This accident reminded them of it.

When doing projects, you must not be blindly arbitrary. Although the engine flew for hundreds of hours at the beginning, the engine was different from the original production process.

At least, you should fly for dozens of hours before performing these actions.

How could they know? Liu Yijiu was not worried that the engine could not bear it, but that the F4 would be disassembled and assembled countless times.

Originally, he took Iraqis to watch flight tests, but Liu Yijiu forgot the Iraqis to Java because something happened, and directly gave them the video taken on the scene.

Although the video was not as shocking as it was on the spot, it was missing the scene of the fighter jet losing control in the end. This video shocked the Iraqis very much.

I wanted to talk to Liu Yijiu in detail, but I couldn't see Liu Yijiu at all.

They were so anxious that they were like ants on a hot pan.

"Damn it turns out that f4 is just a show, and he is not patient at all." Liu Yijiu looked at the situation in front of him and immediately breathed a sigh of relief.

There are already fine cracks at the connection between the roots of the wings on the f4 of the engine, and even the many skinned riveting parts on the fuselage have small cracks. It is estimated that after the force is activated, the fighter will disintegrate directly in the air.

Due to the unique aerodynamic design, the main bearing structure is positioned higher and becomes an upper single wing. Because it is a swept wing, the wing bearing is strong and the wing roots are thick. The main landing gear is naturally arranged at the wing roots, but the area with the greatest structural strength on the entire body is obviously ruined because this super maneuver test is covered with cracks.

"This is not necessarily a problem with F4 itself. We have disassembled and assembled this fighter many times, and have also made some modifications to the internal avionics system. Now we are not sure, because F4 itself cannot withstand such a huge overload, or because our assembly accuracy cannot pass," Zhu Houdao said with some embarrassment.

"It should be a design defect of the F4 itself. The maximum flat flight speed of this fighter at an altitude of 290 meters is only Mach 2.34, and a speed of Mach 2 above the sea level. You checked, how fast did the computer actually achieve when it was driven after the force was started?" Liu Yijiu shook his head. The American one was not the Soviet Union.

Moreover, the f4 fighter itself is a variable sweep wing, and the hydraulic system is very complex. When performing super maneuvering, in order to obtain smaller drag or greater lift, the variable sweep wing is constantly changing the angle during the entire maneuvering process.

This can be understood by the wingspan seen on the ground.

If Yin Qingyuan had not minimized the wing angle and maximized the wingspan, it would have been impossible to complete the maneuvering action.

"It is close to Mach 2.9, and the overload exceeds g, which is more than twice as much as when using a cobra maneuver. At the same time, it is nearly 2g more than when using a super cobra maneuver. Because of this, the test pilot will be unbearable."

"What do you think if you don't communicate with Simon?" Liu Yijiu suddenly asked Simon Lov's attitude.

All of this in front of them subverts their perception of f4, which Liu Yijiu didn't know before.

Perhaps because the Americans discovered these problems, they finally retired this fighter jet that had not been in service for too long amid strong opposition from the military.

"Simon has also seen it, but he took some data and has not given a reply yet." Zhu Houdao did not exclude Simon from the outside because of a conflict with Simonlov.

The problems in this accident must be found out as soon as possible, otherwise, for the entire project, whether it is the imitation f4 or the giant panda project where Simonolov is modifying it with f4 as a circle, it will be a huge disaster.

"Then continue to analyze," Liu Yijiu said gritting his teeth.

If f4 really has major hidden dangers, imitation things will not be of much use.

Of course, if used as the US military does, these hidden dangers will not occur.

The problem is that the Republic cannot be equipped with too many fighter jets like the US military.

After saying that, Liu Yijiu thought that the engine test had not been sent to him, so he said to Zhu Houdao, "You can analyze it with Feng Lun and others, and I will check the situation on the engine. If the engine does not have any faults, then the problem lies with the fighter itself. At that time, let's analyze whether it is caused by our poor assembly technology or its own design defects. Use the computer to do more analysis, so that comrades can work hard during this period."

Although the problem may have been found, it has indeed hit Liu Yijiu a big blow.

At the beginning, he deliberately wanted to get the f4 because this fighter is classic for too many people.

It is not because it can be sold for US$0 million in this era, but because this kind of fighter is an epoch-making product.

This is the world's first third-generation fighter, and it is also the most advanced third-generation fighter. However, due to the US government, it was finally retired just because the maintenance cost was too high.

The US government has never been afraid of the military spending money, and has always maintained the world's largest aircraft carrier fleet and nuclear submarine force.

F4 was originally a carrier-based aircraft. The contemporary F5 and F6 have been carrying the flag for the US military for decades. If it were replaced with the F4 with better performance, it would probably be in service for a longer period of time. In fact, there was no such thing as the F4 at all.

Even variable sweeping wings have not adopted this design since the retirement of F4.

He hurried to the Dynamics Research Institute next to Taiping Temple Airport, and Qi Hai was about to go to Liu Yijiu to report the situation.

On that day, they disassembled the engine from the fighter jet, pulled it back to the assembly workshop overnight, and started disassembly for inspection overnight.

There was a result just now.

Compared to Zhu Houdao's face, Qi Hai said excitedly to Liu Yijiu, "Director Liu, our engine has not had any problems with the afterburner for a long time, but the assembly accuracy has not changed at all. Even the engine impeller has no problem."

"There is no root of the impeller welding at all. Is it possible to observe with a microscope?"

Liu Yijiu's mouth twitched.

It seems that all news is confirming that the strength of f4 will fail in super maneuver that needs to withstand greater overload.

F4 really has huge hidden dangers in structural strength

If this is true, it is covered by the advanced pneumatic layout, then where should the imitation project go?

If the above knows this news, Johnson, the new director of the National Defense Science and Technology Commission, holds the handle, the project will be dismissed and there is absolutely no room for negotiation. Unless they do not report this hidden danger to the top

To be continued.
Chapter completed!