After a long time, Wang Yongzhi clapped his hands, which can be regarded as pulling everyone's attention back.

But even so, there are still many people who will turn over and glance at Chu Hao from time to time.

There was no doubt that although it was only the first time they met, Chu Hao had already left an extremely deep impression in their hearts.

At the end of the meeting, Wang Yongzhi ordered Chu Hao and a few others to stay.

"Professor Chu, this is Zhang Yu, the commander-in-chief of the spacecraft system, and this is the commander-in-chief of the launch vehicle system, Jing Zijun. Wang Yongzhi pointed to two men in their forties and said.

"I won't introduce this Professor Chu, anyway, you know about him, even if you don't know it well, you will know everything when you go back and read the newspaper, it is definitely more detailed than what I said. Wang Yongzhi pointed at Chu Hao and said with a smile.

Chu Hao and the other two exchanged two words, and Wang Yongzhi went directly to the topic, "Professor Chu, you take a two-day rest first, and then enter work when the state eases up." ”

Who knows, Chu Hao waved his hand, "Academician Wang, no need, I can start working now." ”

Seeing that Wang Yongzhi wanted to persuade him, Chu Hao said directly: "I have solved the problem of the thermal insulation layer, you can see if it is appropriate." ”

Hearing this, several people were dumbfounded, not to mention Wang Yongzhi, even Jing Zijun and Zhang Yu knew very well that from the time Wang Yongzhi talked to Chu Hao to the present, a total of five days have not even passed.

In other words, Chu Hao really had the opportunity to study the thermal insulation problem, and he didn't even have five days, so it was absolutely impossible to study the thermal insulation.

It's not that they want to underestimate Chu Hao, let Chu Hao become the deputy chief designer of the two major systems all of a sudden, which has already shown that the Shenzhou spacecraft plan attaches great importance to Chu Hao.

This is just that Chu Hao's speed is a bit fast and people can't believe it, normally speaking, it takes only five days, not to mention researching it, even if he can have a little clue, it is already a great achievement.

Before Wang Yongzhi could speak, Jing Zijun opened his mouth and said, "Professor Chu, this kind of thing is not a joke, you should know very well how important the thermal insulation layer is to the entire Shenzhou spacecraft program. ”

Chu Hao nodded, "I know very well, and what I took out this time is not just a thermal insulation layer, but a complete set of spaceship temperature coating schemes." ”

"Temperature coating solution?" said the three of them almost in unison.

They have been working in manned spaceflight, including launch vehicles, and even missile systems for at least twenty or thirty years, but they have never heard of any temperature coating schemes.

"We all know how important temperature is for launch vehicles, especially manned spacecraft. ”

Wang Yongzhi and the three nodded.

If we talk about launch failures, then in addition to the engine system, including the ignition device, and the entire electronic circuit control system, the most likely problem is the temperature.

I don't know how many rockets and manned spacecraft have just taken off or burned up during re-entry.

It's not that they don't want to solve this problem, it's really not easy to solve, and the working conditions of rockets and spacecraft are just too harsh.

Let's talk about heat resistance first, after the rocket takes off, it reaches the first cosmic velocity, and when it detaches from the earth, even if it is resisted by the shell, the internal temperature is still as high as five or six hundred degrees.

Therefore, it is necessary to manufacture a layer of thermal insulation layer composed of many layers of reflective screens and polyester nets at intervals and overlaps, which can efficiently isolate the heat exchange between the space environment and the orbital bulkhead, greatly reduce the heat leakage on the surface of the cabin, and reduce the influence of drastic changes in heat flow outside the track on the temperature of the cabin.

This material is the thermal insulation material that Wang Yongzhi asked Chu Hao to study before.

But on top of the thermal insulation layer, there is also a gorgeous composite membrane, whose function is to improve the spacecraft's ability to protect against particles such as atomic oxygen in orbit.

In the insulating layer, an additional layer of anti-ablative material must be installed, and then a specially designed organic thermal control coating must be sprayed on it to improve the external heat absorption capacity and reduce the infrared radiation capacity.

As for the propulsion module, there is a high-thrust engine, and the heat-resistant temperature of the insulation layer must reach more than 900 degrees Celsius.

At the same time, it is also necessary to know that in order to carry as much load as possible, it is necessary to reduce the weight of the rocket body, and these thermal insulation layers must be as light as possible in addition to reaching sufficient heat-resistant temperatures, and some thermal insulation materials are even lighter than foam.

If that's all, in addition to enduring high temperatures, the spacecraft also has to endure ultra-low temperatures.

Generally speaking, the trajectory of the spacecraft is at an altitude of 400 kilometers from the earth, the air is very thin, close to a vacuum, there is no protection of the atmosphere, and it has to withstand the radiation of the sun and the earth's atmosphere.

However, the lowest temperature can be as low as -269°C.

This is an extremely frightening number.

In this way, that is to say, the thermal insulation layer of the rocket and the spacecraft has to endure not only high temperatures of hundreds or thousands of degrees Celsius, but also low temperatures of more than minus 260 degrees Celsius.

According to the effect of thermal expansion and contraction, the materials required by rockets and spacecraft are ten times more difficult to develop than normal, or even more.

"This set of temperature coating schemes includes the specific formulation and situation of the shell material of the three sections of the orbital module, the return module and the propulsion module of the rocket and spacecraft, as well as the specific formulation and situation of the thermal insulation material covered under the shell, and the specific formulation and situation of various nano coatings. ”

As he spoke, Chu Hao took out a USB flash drive from his pocket.

Wang Yongzhi was a little stunned, and subconsciously took the USB flash drive in Chu Hao's hand.

Jing Zijun and Zhang Yu were also silent, only the excited look in their eyes could express their mood at the moment.

Although they were suspicious of Chu Hao just now, everyone was not stupid, looking at Chu Hao's troubled appearance, and even taking out the USB flash drive, they would never think that Chu Hao was joking.

If what Chu Hao said is true, then it really solves a big problem for them, and it can even be said that the second take-off of the No. 2 spacecraft can be carried out immediately.

The shadow that hangs over everyone's hearts can finally dissipate.

If that's the case, it's too powerful, too powerful, and they don't know how to express their feelings in words.

"Zhang Yu, you now arrange it first, according to the formula given by Professor Chu, make a little bit of all kinds of materials, and then conduct experimental analysis, if it is qualified, we will immediately apply for the manufacturing project of the second No. 2 spacecraft. ”

Wang Yongzhi forcibly suppressed his excited heart and commanded calmly and forcefully.