I really didn't expect that I was so cheap, and I had nothing to do to run around and tell the truth, now it's okay, find something for myself.

The backwardness of the domestic cockpit cover technology is obvious, even the chief engineer Wen has said that now the entire industry and the whole industry chain are backward, so who can blame him, now Wang Zhengguo said this, he has no benefit, and he has to waste more saliva in vain, the main problem is that he has to be a god stick again this time.

He is really not very keen on being a god stick, especially in front of professionals like Mr. Wen, it is even more difficult to pretend, and if he is not careful, he will be exposed.

But now there is no way, things are already like this, fortunately, Mr. Wen is not necessarily very strong in optical engineering, and he can still have the courage to talk and talk, no matter how much he doesn't want to be a magic stick, he has to grit his teeth and be a once, he inadvertently pretends to be a force, and he has to continue to pretend with tears, just say it simply.

"The cockpit canopy problem, we can barely continue to use PMMA in terms of materials, but I personally suggest that it is best to follow the route of the Americans and seize the time to develop new PC light-transmitting materials, which is the first choice for the next generation of fighter cockpit canopy materials. ”

PC material is a technology that must be taken, whether military or civilian, its range of use is too wide, the country has no reason not to pay attention to it, but because of the lack of domestic funds, all aspects of waste to be revived, only for a while and a half did not follow up the relevant research and development work.

Considering the specific situation now, the optical laboratory is taking the PMMA material route in organic optical glass materials, and there will be no more energy and resources to open another PC material technology line for a while.

But he also knows very well that in more than ten years, PC materials will further develop into optical-grade PC, which will be widely used in cameras, microscopes, telescopes and optical testing instruments, and even glasses and optical discs.

The problem is that the optical laboratory does not have enough funds to develop a new PC resin material family, the field involved in that thing is too wide, and it can only be developed by the state.

For the time being, I can only hope that through my influence on Mr. Wen, the country will pay attention to this aspect first, and start the research of relevant materials as soon as possible, and when I have the money and am ready to invest in this research, I will not start from scratch completely.

Wang Zhengguo's point of view is clearly proposed to develop a new PC material, and there seems to be an idea of abandoning the traditional PMMA material in his words, which makes Mr. Wen a little surprised, not to mention that the advantages and disadvantages of these two materials are still being debated in China, and there is no unified opinion even abroad, Mr. Wen is a little curious about this.

"PC materials, that thing is indeed the mainstream material choice of the cockpit cover of the American aircraft, we have submitted this problem to the higher departments, and we also hope that the country can organize relevant departments to tackle key problems and complete the research and development of new materials as soon as possible. But PC materials and PMMA materials actually have their own advantages, why do you think PMMA materials can't be sustained?"

For the two most widely used plexiglass materials in the aviation industry, the United States used the newly developed PC material to make the cockpit cover in the era of the second-generation aircraft, and the Soviet Union used the newly developed branch on the basis of PMMA material, and the new polyfluoroacrylate material is based on PMMA material to add some new chemical elements, so that the high temperature resistance of the material has been greatly increased, so as to obtain even higher heat resistance than PC material.

The two technical lines represent the different positions of the two sides of the Cold War, Wang Zhengguo is now outspoken in promoting the capitalist line and supporting the development of PC materials, if it is about ten years back, as long as there are people who want to engage him, he can properly put on the hat of a capitalist capitalist roader, fortunately, the times are different now, these are just disputes on the technical route, and everyone can also look at it rationally.

I was a little surprised to hear that the problem of the dispute between PC and PMMA materials was brought out, but I was soon relieved, this is actually a very simple question, as long as the thinking can break through the limitations, the answer is very simple.

"With regard to the two very different material routes of the United States and the Soviet Union, it now seems that each has its own advantages, but if you analyze it a little more, you will find that the Soviet Union has reached a dead end. Although polyfluoroacrylate strengthens the ability to withstand high temperatures, it also brings new disadvantages such as small hardness, poor wear resistance, and changes the material properties after long-term sunshine, so the Soviet Union uses silicate glass and polyfluoroacrylate composite material route, which is made thicker and heavier, which is not a good thing for aircraft. ”

Obviously, Mr. Wen did not know that the Soviet Union's cockpit canopy technical route was carried out in this way, and he only knew that the Soviet cockpit canopy used a new branch of PMMA material, which overcame the original shortcomings of PMMA material, but he did not expect that the new material brought new shortcomings.

And what is even more incredible is that the Soviets actually turned back the clock of history and took out such a thing as silicate glass to make a fuss, which is simply amazing....

Suddenly found that this guy still learned something in college, at least in terms of optical engineering, he is much better than himself, the chief designer of the aircraft, but you can take a look at it again, if it is good, you can leave people in Shudu, after all, the development of the new J needs new technical support in all aspects, and the cockpit canopy is an indispensable link.

"I don't know what you're talking about, but I believe that you, as a professional in this field, have been doing scientific research with your professors for several years, and you should still have real materials, so you can continue to talk about the differences in technical routes between the United States and the Soviet Union, and I will continue to listen. ”

When it comes to work, Chief Wen is energetic, and there is nothing to do on the train, so it is better to listen to the views of professionals in optical engineering on the cockpit cover of the fighter, which is still very useful for the development of the new J, and any technology that is conducive to the development and maturity of the new J is of interest to Mr. Wen.

In this situation, if you don't continue to talk about it, it will definitely not work, Wang Zhengguo simply let go of the chatterbox, and he is not worried about whether some new thinking can be accepted when he speaks, anyway, Chief Wen's new annihilation project is mainly bold and radical, and he will not mind his cockpit canopy material route.

"The Soviet route will definitely be a dead end, but the American PC material route is not very good, after all, PC materials are exposed to ultraviolet rays for a long time, there will be yellowing, poor wear resistance, soluble in organic solvents and other shortcomings, and these shortcomings happen to be made up for by PMMA materials, so I boldly speculate that the future fighter cockpit canopy material is likely to be PC/PMMA material composite manufacturing. ”

It's very simple to say, it's just a matter of touching the skin of the mouth, but the related technology is very difficult to do, even if Wang Zhengguo knows that this composite material is the trend of the future, it is even used in the manufacture of the cockpit canopy of the F-22 fighter, but it is not easy to do.

Different resin materials are composite, and the traditional method is made by layer by layer, but the cost of this method is terrible, not to mention the complex curved shape of the cockpit canopy, so it is almost impossible to use it for large-scale manufacturing.

This calls for a new low-cost manufacturing solution, which, if successful, will mean that within the next 40 years, the canopy will be processed at the world's top level.

It is a pity that the Republic has not even made a breakthrough in basic aviation-grade PC materials, let alone the processing and manufacturing of PC/PMMA material composite materials.

Moreover, even if there is a process that can composite the two materials, it is not enough, and the processing of this composite material into the complex curved surface of the fighter canopy requires a related material forming process, which is also a big problem.