Chapter 1425

As a cross era fighter, only having an invisibility is certainly not enough. After all, the fourth generation aircraft requires the ability of 4S.

Stealth is just a kind of. Supersonic cruise and super maneuverability need to be realized by powerful engines.

At present, supersonic cruise must be abandoned. Without a strong engine, you can't get the supersonic capability without opening afterburner. Although this capability is very strong, you must wait until the engine with greater thrust appears. Don't think about it now.

After all, it is unprecedented to master the technology of three-generation engine. It may take ten years to further improve it, which is still the conservative estimate of Mr. Song.

Using the current F110 engine to test fly is the safest way. This engine can not make your own supersonic capability or super maneuverability.

Because the super maneuverability depends on the vectoring nozzle.

Fighter nozzle, whose scientific name is exhaust emission system, is commonly known as chrysanthemum. It looks very small, but it can bring great effect.

At present, the convergent divergent nozzle is commonly used. With the change of flight state, the motor drives the pull rod to change the critical cross-sectional area and outlet cross-sectional area of the nozzle, so as to make the air flow fully expand at the outlet as much as possible.

A good nozzle can improve the jet efficiency by about 8%, which is definitely a lot.

This is also a common technology of the third generation aircraft, which is no less than the ejector nozzle of the second generation aircraft. However, in the fourth generation aircraft, what is needed is the vectoring nozzle.

Vector can change the direction. This kind of nozzle can not only make the aircraft engine jet backward, but also deflect, so as to replace the control surface of the original aircraft or enhance the control function of the aircraft through the thrust component generated by the deflection of the nozzle or tail jet, so as to control the flight of the aircraft in real time, which can greatly improve the maneuverability of the aircraft.

The nozzle of harrier fighter can deflect downward, which is a thrust vectoring technology. Of course, it is not to improve mobility.

The vectoring nozzle of a fighter can provide more powerful deflection torque without 90 degrees of deflection, even 30 degrees of deflection, so as to make the mobility of the fighter more excellent.

Now, the vectoring nozzle has been pre researched by various engine manufacturers. Later, the engines used in F-22 fighters are equipped with binary vectoring nozzle, which can deflect the direction up and down.

The Su-35 of Xiong state has an omni-directional vectoring nozzle, and even applies this technology to the Su-30, which is exported to Baixiang state. It seems to be high technology.

But Qin Guan knows that it's not difficult to study this thing. It's hard to be reliable. The life of the vectoring nozzle exported to the white elephant country is only 30 hours. No matter how advanced it is, it is useless because its reliability is too poor.

In later generations, although the j-20 fighters of the Han Dynasty were also studying the vectoring nozzle, they had not been installed on the aircraft, which was a problem of reliability.

What if you want to achieve first-class mobility without vectoring nozzle? Of course, it is to continue to work hard on the aerodynamics and make the aerodynamics of this aircraft so complex. I just want to make it compete with foreign fourth generation aircraft even without vectoring nozzle!

We don't have enough engine technology. We use pneumatic to make up for it! This is what song Lao thought.

Qin Guan nodded: "yes, it's a good idea. I look forward to your good news. If the funds are insufficient, our northern industrial company can also provide funds."

The research and development of fighter planes requires a large amount of funds. Now we only have a wooden model. If we come up with a prototype in the future, it will require a large amount of funds.

It's too difficult for enterprises to study by themselves, but now Qin Guan doesn't need money. It's no problem to provide some.

Song Lao shook his head: "in terms of funds, it is not an urgent problem for the time being. Now we have a more urgent difficulty."

It's not easy for Qin Guan to come once. Since he came, he certainly wanted to find Qin Guan for good things.

What are the difficulties?

"In terms of aerodynamic layout, we have tried our best to use the model calculation of radar reflection to get a good result. However, even if we do so, we can't achieve the optimal effect. We still need stealth coating."

Stealth aircraft is not only the design of appearance, but also the stealth coating. It is also a project invested by many countries.

There are even some legends. For example, the people of the chicken country want to do it, but they can't do it. Therefore, they thought of a way, asked to see the F117 of the eagle country, and said a good compliment. As a result, the people of the eagle country let him go. After going, the people of the eagle country said that they can only see and can't touch it. However, the people of the chicken country still touched it with their hands, A little invisible coating was pulled out of their fingernails. They brought it back to the chicken country. As a result, they got their invisible coating out.

Of course, this brings too much magic. Qin Guan also looks at this with the psychology of reading third rate magazines.

At the same time, another example is that the F-117 of Eagle country was knocked down by the old Sam missile. Later, it is said that the fragments were sent to the Han country. On this basis, the Han country carried out research and development, and the stealth coating of the Han country began to shine.

Of course, these are some third rate Xiaobian's statements. The stealth coating is not so easy to handle. Even if there are samples, the process is unknown, or it is useless. Just like the chobam armor, it is useless to get the samples. If the process is unknown, it is impossible to make it.

Now, our research on stealth coating is still zero. What should we do?

Of course, there are some ways. Qin Guan's mind has thought of a good thing. In the past, he planned to exchange F-117. He hasn't taken care of it. This time, he took advantage of this opportunity to exchange F-117. It's good to give old song a better sample study.

F-117, a big lie told by the eagle countrymen in later generations. What did they say in public and destroy it? What happened? They are sealed up secretly and can be opened at any time. This kind of aircraft is delicate and needs an air-conditioning hangar. It must not be in the aircraft cemetery they are familiar with.

The stealth aircraft of the eagle people are very delicate. The B-2 bomber is dispatched once every time, and even needs to spray the stealth coating of the aircraft again. Only the rich Eagle people are willing to do so. Even the F-35 has been seen to explode the stealth coating.

Thinking of this, Qin Guan couldn't help but go in and look for it!