Chapter 1845

Now they want double insurance. For the time being, they first design according to the lift engine. At the same time, they set up a branch to demonstrate the feasibility of this lift fan.

Dongdukov nodded: "I'm also very interested. I believe this is the best way to successfully develop our fighter."

In this way, Qin Guan came to yaklev Design Bureau and achieved a pre planned goal to get in touch with the scientific researchers here. Later, when Xiong state disintegrated, it would be easier to get them in touch with each other. Now, Qin Guan has paved several channels at the same time. In the future, once Xiong state disintegrated, Scientific researchers can't live any longer. Let's all come to the state of Han. The state of Han welcomes you!

"Now, can you introduce us to the Jacques-141 fighter?" Qin Guan asked.

They didn't intend to introduce Qin Guan and others, but now, the two sides have reached a consensus and can cooperate on the modification of fighters. In this way, Qin Guan and others can naturally see this fighter. Anyway, MiG-29 can be sold to the Han country, not to mention this vertical takeoff and landing fighter that father doesn't love and mother doesn't love.

"Come on, let's go and see the all metal prototype," shuchkov said.

In the development of fighter, although computer design can be used, after all, the fighter designed on the computer does not look intuitive. Therefore, an intermediate step in the design of fighter now is to manufacture a prototype.

Ordinary prototypes are usually made of wood. After all, it is fast. The wood treatment is very simple and can be processed into corresponding shapes.

At least domestic fighters have gone through this stage. The J-8, J-10, Xiaolong and Feibao have all made wooden prototypes. Now, Xiong Guoren has also made prototypes, but Xiong Guoren are more advanced. They directly make all metal prototypes and use metal to make prototypes, which is more textural.

So we entered the interior of yaklev Design Bureau, where everyone was surprised to see the beautiful fighter in front of us.

All metal prototype of Jacques-141!

This is completely built according to one-to-one. It can be seen that this kind of aircraft is much larger than jacques-38!

The jacques-38 is only 15 meters long and has a wingspan of 7 meters, while the Jacques-141 has been enlarged to 18 meters long and a wingspan of 10 meters. If it is not to take care of the area of the aircraft carrier's elevator, it may be made larger.

Now, the fighter looks more modern. Its shape is prepared for supersonic flight. The huge rectangular inlet looks like MiG-25, and the tail becomes a double vertical tail, which is prepared for installing the circular rotatable nozzle in the middle.

Laymen watch the excitement, experts watch the doorway, Chen Rui and others have begun to speculate on the layout of this fighter, where the engine is, where the fuel tank is, how to recover the landing gear, how to design the air inlet of the fighter, and so on.

Everyone first turned to the tail, which is the biggest secret.

How to control the jet of the engine to spray downward? The simplest is the vectoring nozzle similar to the F-22, which directly uses baffles to change the air flow direction. Lockheed did the same when developing the F-35. They designed a binary single inclined expansion tail nozzle. There are two upper and lower baffles behind the nozzle, of which the upper baffle is much longer than the lower baffle, In this way, the upper baffle can be deflected downward by 90 degrees to make the jet spray vertically downward.

However, they soon found that this simple approach would bring unacceptable disadvantages, and the most important thing is the serious thrust loss caused by air flow separation.

At the same time, the weight of this nozzle is too large, the sealing is not easy to solve, and the operation structure is also quite huge.

Later, they thought of Jacques-141 of yaklev Design Bureau and decided to introduce their technology. This is a peculiar way of rotation, which is called three bearing rotating nozzle.

Specifically, the tail nozzle is divided into three sections, and the joint surfaces are at a certain angle. The circle is long on one side and short on the other side, which is connected by three sealed circular bearings. At ordinary times, it is connected horizontally. The long end of the first section is just followed by the short end of the second section. In this way, when the three sections are connected, the whole nozzle is horizontal. When necessary, just use an external motor to drive the gear on the rotating section in the middle. In this way, the front section and the rear section remain stationary, but the middle section rotates 180 degrees. The long ends of the three sections will be combined to form a structure bent down 90 degrees.

The engineer's brain is always the most ingenious!

Now, on this metal model, you can see that such a nozzle is completely different from the previous jacques-38. The main engine of jacques-38 is divided into two sides. A big circle is divided into two small circles and jet towards both sides. Now, it is a big circle. Once you turn, you turn the nozzle.

A very clever scheme.

Of course, this thing has a long life. According to the standards of Xiong Guo, 1000 cycles are already very high. It can take two landings at a time, and it can take 500 sorties, which is enough to fly for several years.

It is estimated that the nozzle has not reached its service life, and the engine is about to reach its service life.

Qin Guan made a circle around the plane, and then spoke again. How can he miss the opportunity?

"Commander shuqikov, have you considered the stealth of fighters?" Qin Guan asked.

In this era, when it comes to stealth, it is definitely ahead of schedule. For the whole people, we will not know how terrible stealth fighters are until the eagle people's F-117 shows its power.

However, Qin Guan has been promoting this all the time. Under the promotion of Qin Guan, stealth has become a very popular word in the aviation industry at least. When Qin Guan led the team to participate in the air show, he once launched the stealth model, which is quite advanced.

As for the Navy, the stealth catamaran missile boats produced by the Han state have long been on sale all over the world. It seems that the appearance is very frightening and the price is not expensive. Therefore, many navies are interested in it and order a batch.

"Yes," said shuchkov. "You have done quite well in stealth."

"I think this fighter can greatly improve its stealth capability as long as it is slightly modified." Qin Guan said: "I think we may be able to cooperate in this regard."

If the shape of the fighter plane is improved, there must be more cooperation with his own side. Qin Guan knows that if the yaklev design bureau wants to survive, it can boldly accept new ideas and adopt new technologies. For example, in the history of parallel time and space, they once modified the shape of yak-141 and have stealth ability, It was called jacques-143. Later, it was changed to jacques-201, but it hasn't been sold.

Now, if we work together, there will be more cooperation.