In the new year, it quietly entered everyone's life.

Although last year, the state began to establish statutory holidays, but for units with heavy scientific research tasks such as the Rocket Research Institute, there are basically no holidays.

On Chinese New Year's Eve, everyone made a dumpling meal in the canteen of the research institute, even if it was the New Year.

Since December last year, the propulsion system of the new recoverable rocket has been preliminarily finalized.

The development of the entire new rocket has entered the stage of full-system integration that requires continuous running-in.

This work is basically a process of continuous adjustment of the various systems.

It takes an infinite amount of effort to make the rocket as a whole the best it can be.

Because the person in charge of each system basically has his own ideas, and coordinating the contradictions between them is the work that Zhang Xingyang has spent a lot of time doing during this time.

That is, Zhang Xingyang showed unparalleled scientific research strength last year, and subdued these young people who almost only have technology in their eyes.

Coupled with the relatively good personal relationship between the heads of several major systems, the contradictions between the various systems have not intensified.

"Su Xiao, how is the outer insulation material of the rocket, the aerodynamic analysis of the shape of our side is still waiting!"

Qiao Yang, who is the person in charge of the mechanical analysis of the fire rocket, asked Su Xiao, who is in charge of materials, very unceremoniously at the meeting of the heads of various systems on Monday.

In the process of rocket flight, in addition to the influence of the shape of the rocket, the surface material will also have a certain influence.

The material development work that Su Xiao is responsible for, the outer insulation material developed during this period of time, the effect is not very good, and it cannot achieve a good thermal insulation effect, so it has been reinvented.

This also caused a delay in determining the specific materials used for the outer layer insulation, which brought great trouble to Qiao Yang, who was responsible for the mechanical analysis of the rocket.

"How can material development be so easy, we have just found a suitable research direction, using new organic resin coatings."

"It can withstand high temperatures very well and has good thermal insulation properties."

"It's just the research and development time, and it is estimated that it will take another month or two, but we have already estimated the approximate properties of the material, so we can use it for you first."

The shell material of the rocket is generally made of titanium alloy, beryllium alloy or aluminum alloy.

In the process of rocket liftoff or landing, because of the severe friction with the atmosphere, and the alloy material is relatively easy to conduct heat, it is easy to transfer heat to the inside of the rocket.

Burning out various automatic control instruments and electronic components in it, which led to the failure of the rocket.

Therefore, the outer insulation material of the rocket, or the ablation-resistant thermal insulation coating, is very important.

Su Xiao's material laboratory, the newly developed ablation-resistant and heat-insulating coating material, the main body is made of organic resin synthesized from silicon, phosphorus, nitrogen, boron, chlorine and other elements, and has the characteristics of high temperature resistance and self-extinguishing.

After adding carbonobon fiber and selenium oxide, because selenium oxide will sublimate in a high-temperature environment, it will volatilize and take away part of the heat on the surface of the rocket, and leave a carbonized film to isolate most of the heat from the outside world.

In this way, it can well protect the various control instruments and equipment inside the rocket.

And Qin Ming, who is in charge of the rocket control system, has a good relationship with Su Xiao, and he is still in the mood to make a little joke at this time.

"Su Xiao, your material development must be reliable, otherwise our control system will be burned out, and the rocket will fall!"

Zhang Xingyang also appropriately expressed his attitude at this time:

"I've been paying attention to the material, and there will definitely be no problem."

"Qin Ming, don't worry, you won't burn your control system."

"As for the research and development time, you don't have to worry, Su Xiao and they have already found the direction and method of research and development of materials, and they will definitely be able to make materials in no more than a month."

"Qin Ming, how is the current progress of the control system, especially the attitude perception adaptation, has it been made?"

During the previous period, Zhang Xingyang's main time and energy were still focused on the propulsion system and the ablation-resistant and heat-insulating coating of the rocket.

There is not so much attention to the control system, of course, Qin Ming also has strong research and development capabilities in the control system.

In addition, the early work of the control system was not very complicated, because it was difficult for them to carry out the real development work until the propulsion system and shape design were completed, so Zhang Xingyang did not put too much effort into these aspects.

But now the propulsion system and shape design of the rocket have entered a stage of fine-tuning, and the overall plan has been basically determined.

Zhang Xingyang naturally wants to devote more energy to the control system.

After all, there are certain differences between this control system and the previous ones.

Because this rocket, it is necessary to take into account the reuse, compared with the previous disposable rocket, there is also an additional process to control the rocket to return to the ground.

The control system is more complex than the previous control system.

"The current problem with adaptive attitude perception is that the current domestic chips cannot process so much data at the same time, and can only use imported chips."

This matter is also related to the new propulsion system, because as many as eleven rocket engines are used, and each rocket engine has to be angled.

At the same time, the amount of data processing required is almost three times greater than that of previous rockets.

As a result, the current domestic industrial control chip cannot quickly process such a large amount of data.

"If a domestic chip is used, the attitude adjustment system of the rocket will have a delay of 0.1 seconds to 0.2 seconds."

This delay time may not be a big deal in other industrial fields, but it is a big number for the aerospace field, where the time requirements are strict to one thousandth of a second.

"Hey, that's a problem, and it's not that easy to solve."

After Zhang Xingyang listened, he was also very helpless, the domestic electronics industry was almost backward in all directions in recent years, and Zhang Xingyang currently has no quick solution to the problem in this regard.

"Let's put this question first, what is the effect of adaptive adjustment, and how accurate can it be."

Adaptive adjustment of rocket attitude is mainly achieved by constantly fine-tuning the nozzle angle of each rocket engine.

The accuracy represents the amount of offset that the rocket can offset from the orbit throughout the launch process.

The higher the accuracy, the smaller the orbit offset.

"The accuracy rate is okay, and now the accuracy rate of the latest control scheme can reach 99.1%."

"That's not bad, keep up the good work!"

This meeting is almost over here, Zhang Xingyang said that he may not be there in the next few days, so that everyone can negotiate and solve it as much as possible.

"If you have anything, discuss it yourself first, if you are really unsure, call me."

As for Zhang Xingyang's next stop, it is Tianfu City.