Chapter 1853

Of course, Qin Guan knew that Su-27's soft bone disease was not completely overcome until Su-35. Therefore, people can change the model of Su-27 to Su-35.

Compared with the two, the Su-35 is more advanced, equipped with phased array radar, a higher thrust 117s engine and an improved body structure. After focusing on improving the wing, the soft bone disease of this fighter was finally solved.

In the past, because of drilling holes in the girder, the maximum overload in the most needed transonic range was only 7.5G. If it was larger, it might lead to the disintegration of the aircraft. What about the Su-35? The maximum overload reached 10g!

The soft bone disease of Su-27 is definitely a worry of Sukhoi Design Bureau, which is caused by the huge radar on the nose. If the radar is not too overweight, they don't need to do such work at all. Now, Qin Guan's words of soft bone disease are simply stabbing Simonov's heart, and Simonov's face immediately becomes very ugly.

There was no such term for rickets before. Now, the title of Su-27 was given by Qin Guan. Unfortunately, the language of Xiong state is different from that of Han state. Otherwise, it has another title, crisp-27

Looking at Simonov's appearance, Qin Guan was very proud. He continued: "this aircraft is roughly similar to the shape of MiG-29, but its volume is larger. The whole fuselage is a huge lifting body. Under this layout, there will be another problem."

Looking at the Xiong Guoren present, Qin Guan said firmly, "its flight control design is a huge problem. If the design is not good, the pilot just pulls the operating lever a little and the fighter shudders, and then he will completely raise his head."

This guy is a devil. He knows everything? When Qin Guan said so, Simonov's eyes were filled with awe.

Yes, the question raised by Qin Guan has always been accompanied by the whole process of the test flight of Su-27 fighters. Because of this problem, several Su-27 prototypes fell off!

In particular, at the beginning, they didn't know what was going on. In the t-10-2, that is, the second aircraft, the test pilot yevgeni did a pulse test when flying flat at a height of 1000 meters and a speed of 1000 kilometers. With a little pull rod, the aircraft whizzed up, and then he put the push rod. In this way, it induced the shock of the fighter and went back and forth, The plane disintegrated in the sky.

Where's the test pilot?

The steel planes disintegrated. The body of the test pilot was a body, and he couldn't stand the vibration. Then he disintegrated. After the accident, only one helmet was found.

Later they found that the plane was too flexible.

Of course, this problem lies not only in the Su-27, but also in the F-15 fighter. The wings of this kind of aircraft are wide, but if you look carefully, you can find that there is only a pair of pylons under the wings! Compared with other fighters, it is definitely a wonderful work.

Why is this? When McDonnell Douglas was doing it, it was found that as long as the hanger was added, the plane began to shake and couldn't be done. As a result, we simply clicked and didn't add the hanger.

Therefore, the most advanced F-15 fighters of the Eagle Air Force became such goods. Until later, happy desert country spent a lot of money to buy the latest batch of F-15. In order to add some gimmicks and deceive customers, Boeing patted its chest and promised to add a second pair of pylons.

At this time, 40 years have passed since the first flight of F15 fighter. It should be very simple to add a pair of pylons? It turned out that the wings shook badly. In the end, they could only delay it for two years!

This makes the young designers of Boeing also very angry. These old men of McDonnell Douglas company are really fuckers. They are not negotiable!

The F-15 fighter was originally designed by McDonnell Douglas. Later, McDonnell Douglas was about to go bankrupt and was merged by Boeing. How can those designers of Boeing know about the past? Like the ashes code of some websites, they must not move, and there will be endless problems.

Now, Qin Guan also knows that a big problem of this Su-27 fighter is flight control. This kind of aircraft with the whole fuselage is a lift body layout. If you look up, it will be too fast and can't be controlled at all.

Qin Guan's words are definitely pointed to the blood. Every word is straight to the point, which surprised Simonov. Qin Guan's vision is so unique. How did he know?

These problems are not a problem on the MiG-29, because the MiG-29 is light and compact. On the Su-27, these shortcomings are magnified indefinitely.

"President Qin, do you have any good ideas?" Simonov asked. Since Qin Guan said it, you might as well see what he could say.

"Of course, this is flight control. As long as the boundary setting is added to the flight control, there will be no problem." Qin Guan said, "however, if this feature can be used, it may give this fighter unparalleled mobility."

It's unstable, but it's just because it's unstable, so its mobility is good.

Simonov nodded. He was very happy with these words.

"Of course, if we want to further control, there are still ways." Qin Guan continued: "On the one hand, a vectoring nozzle can be added at the tail of the engine to control the vector propulsion of the fighter. On the other hand, a small canard wing can be added at the front edge wing to further control. In this way, the advantages of the fighter can be effectively utilized and the danger can be avoided. Of course, this is a great challenge to flight control After all, there are too many things to control. Moreover, all of them must be added to the flight control, so that they can really play a role. They must not be controlled manually like the MiG-23 fighter. "

Qin Guan's words constantly brighten Simonov's eyes, because what Qin Guan said is exactly what they want to do! Now Su-27 fighters have begun to enter the army in large quantities and are ready to serve. For Sukhoi Design Bureau, the task has not been completed, and various modifications of this fighter are in progress, such as the two seat trainer su-27ub, which is better than For example, the fighter bomber improved on its basis, and even the sliding jump take-off carrier aircraft transformed for the Navy, and so on.

These aircraft are developed based on Su-27, but their performance has not changed completely. If you want to greatly improve the performance of this aircraft, you can start from two angles, one is to use vector engine, the other is to add a front canard wing to turn this aircraft into an advanced fighter with three wing layout!