"Chief, look at what you said, you even used the word 'again', too much to look up to our Tengfei Group, we want to upgrade, but how can it be so easy, at most it is a slight improvement on the basis of H-ZB800 and NB-2800X. ”

Zhuang Jianye smiled modestly, and said even more modestly, the problem is that the head of the headquarters doesn't eat this at all, and squints his eyes and asks Zhuang Jianye a soul torture: "Do you want funds?"

"Think!" Zhuang Jianye did not hesitate.

"Then tell me honestly!" the head of the headquarters was silent.

"In fact, it's nothing, that is, the strength and toughness of the H-ZB1000 grade carbon fiber composite material are twice as high as that of H-ZB800, and the material properties of the American F-22 air intake lip, wing edge, vertical tail leading edge and other key positions that are prone to shock wave resistance are ......"

In fact, although the manufacturer claims to use how many carbon fiber composite materials are used by the manufacturer, and how much it accounts for, the advanced nature is self-evident, and the words are even more good, and even the decimal point of the proportion is more accurate than the report submitted to the Ministry of National Defense.

But if anyone follows these words and really makes a stealth plane by himself, he has to touch the bag at one end.

The reason is very simple, the Americans use carbon fiber composite materials on stealth fighters, the problem is that there is not one kind of household use, but as many as four.

Because according to the actual composition of the aerodynamics of the aircraft in different states and the actual forces of the fuselage everywhere, the comprehensive cost situation must be trade-offs in terms of materials.

It's the same idea that in the production of automobiles, different materials such as steel for the body frame, aluminum alloy for doors and other plates, and high-strength alloy steel for the chassis are the same.

The F-22, as the world's only next-generation fighter, also applies this idea, and the traditional T500 and T800 carbon fiber composites are used in the manufacture of horizontal tail or vertical tail panels.

The wings, back skin and some structural parts are made of ultra-high-strength, ultra-high-toughness carbon fiber composite materials equivalent to H-ZB800.

However, neither T500 and T800 nor H-ZB800 can reflect the advanced nature of F-22, because these three types of carbon fiber composites still lack a key index, that is, super heat resistance.

After all, the most typical performance indicator on next-generation fighters like the F-22 is supersonic cruise, and in the process of transonic speed, the windward side of the aircraft will produce extremely strong shock wave resistance, which is not only strong, but also produces great thermal energy to burn the key parts of the fuselage.

In order to reduce the effect of shock wave resistance, the technical route used in the past has generally been to use titanium alloys as the ideal material to counteract these critical forces.

The problem is that there is nothing wrong with titanium alloy on the third-generation aircraft, and it will have a big problem if it is rashly used in the next generation of fighters, the reason is very simple, another key indicator of the next-generation fighter is radar stealth, and titanium alloy as a metal material, the radar reflectivity is super strong.

Because of this, titanium alloy is the structural framework of the next generation of fighters, and the internal trusses are fine, and they are hidden inside the fuselage anyway, but it is not suitable to be exposed as a skin.

Unless the ground crew is willing to endure the maintenance work of changing the ~~~ state to the explosion, it will take 100 hours to apply the absorbing paint all over the body for every hour of flight.

In addition to low radar reflectivity, the subtle reflection of radar waves can also be achieved through multi-layer weaving and other technological means to achieve the so-called "wave absorption" effect.

Combined with the stealth design on the aerodynamic shape and the blessing of the absorbing coating, the overall radar stealth capability has reached a new height in an instant.

However, although carbon fiber composites are good, they have one disadvantage, that is, the heat resistance is particularly poor, which is not because of the carbon fiber composites themselves, but because of the characteristics of the epoxy resin that connects the carbon fibers.

At normal temperatures, there are no problems with the epoxy resin used for bonding and curing, but once the temperature reaches a certain value, the epoxy resin will quickly decompose under the action of high temperatures, causing the carbon fiber parts to fail quickly until they disintegrate.

That's why the third-generation combat aircraft of the past used carbon fiber composites, but only placed them in non-heat-bearing areas.

The problem is that the third-generation aircraft can not be cared about, and the next-generation combat aircraft cannot be ignored, otherwise how to achieve radar stealth?

The Americans have obviously come to the forefront of the world in this regard, and both the B-2 and the F-22 have proved with practical actions that the Americans have achieved industrial-grade mass production in this regard.

Of course, Tengfei Group can't get relevant core technologies from the United States, let alone Tengfei Group, even the British Space Company, which wears a pair of pants with the United States, is also rejected by the United States, so Tengfei Group's H-ZB1000 naturally uses its own core technology.

"Americans have a well-developed chemical industry, so they can work epoxy resin, make epoxy resin that can withstand high temperatures and oxidation, and then use automatic fiber laying machines to complete industrial production.

We don't have such good conditions as the Americans, so we can only find another way, so when we summarize the reasons for the failure of the last 'returning' satellite, we found that although the ceramic-based heat-resistant materials we are responsible for producing are indeed inferior in their resistance to high-temperature oxidation, they are not useless.

So we studied this idea, and we really found two broad application paths, one is a high-precision cutting-edge ceramic tool, which can be used as a rapid cutting tool for precision machine tools and special machine tools.

The other is H-ZB1000 carbon fiber composite material with ultra-high strength, ultra-high toughness and strong heat resistance, do not agree with the previous carbon fiber materials, H-ZB1000 internal fiber filament we use part of the ceramic matrix composite technology, into a part of the ceramic fiber, and carbon fiber curing after the formation of a new fiber material.

Then through our specially developed NB-2800X composite fiber 3D weaving equipment, it will be woven into a material that meets the specifications, and then formed at high temperature in a high-temperature solidification furnace, so that the material can meet the requirements, through our test, the torsion heat energy generated when the helicopter blade is deflected will not have any effect on our H-ZB1000......"

Zhuang Jianye babbled and talked about the new materials in a meticulous way, but the head of the headquarters frowned more and more when he listened, until finally he couldn't help but stretch out his hand to interrupt: "That's all for your summary of the failure of the 'returning' satellite?"

"Something else, that is...... It's just that there are some financial difficulties, chief, you see ......"

"I ......" The head of the headquarters was so angry that he couldn't cry or laugh, and he said a lot of things waiting for him here, so he pointed at Zhuang Jianye's head: "Can you Zhuang Jianye be a little reserved when you see Qian?

Zhuang Jianye nodded hurriedly: "Okay, but a few years ago, my cheekiness has been handed over to the state, or else, chief, do you think this is okay?