A big country of aerospace with black technology

The new year has just quietly entered everyone's life.

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

On New Year's Eve, everyone made a meal of dumplings together in the cafeteria of the research institute, and it was considered Chinese New Year.

Since December last year, the propulsion system of the new recyclable rocket was initially finalized.

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

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

It takes an infinite amount of energy to maximize the integrity of the rocket.

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

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

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

"Su Xiao, how is the insulation material on the outer layer of the rocket doing? We are still waiting for the aerodynamic analysis of the shape!"

Qiao Yang, who is in charge of the rocket mechanics analysis, asked Su Xiao, who was in charge of materials, very bluntly at the meeting of the heads of various systems on Monday.

During the flight of the rocket, in addition to being affected by the shape of the rocket, the surface material will also have a certain impact.

As for the material development work that Su Xiao was in charge of, the outer insulation material developed during this period was not very effective, and could not achieve a good insulation effect, and had been overthrowing and starting over.

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

"Material development is not so easy. We have just found a suitable research direction, using a new type of organic resin coating."

"It can withstand high temperatures very well, and at the same time has good thermal insulation properties."

"It's just the research and development time. It is estimated that it will take another month or two. However, we have already estimated the approximate performance 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.

During the launch or landing of the rocket, due to the intense friction with the atmosphere and the fact that alloy materials are easier to conduct heat, it is easy to transfer heat to the interior of the rocket.

Various automatic control instruments and electronic components in it were burned, causing the rocket to malfunction.

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

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

After adding carbon boron fiber and selenium oxide, because selenium oxide will sublimate in a high temperature environment, it will take away part of the heat on the surface of the rocket while volatilizing, and leave a layer of carbonized film to isolate most of the heat from the outside world. Lose.

In this way, various control instruments and equipment inside the rocket can be well protected.

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

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

Zhang Xingyang also expressed his attitude appropriately at this time:

"I have been paying attention to the material, and there will definitely be no problems."

"Qin Ming, don't worry, your control system will definitely not be burned down."

"As for the research and development time, you don't have to worry. Su Xiao and the others have already found the direction and method of material research and development. They will definitely be able to make the material in less than a month."

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

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

He didn't pay that much attention to the control system. Of course, Qin Ming also has strong research and development capabilities in the control system.

In addition, the preliminary work of the control system is not very complicated, because it is difficult for them to carry out real development work before the propulsion system and shape design are completed, so Zhang Xingyang did not put too much energy into these aspects.

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

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

After all, there is still a certain difference between the control system this time and the previous ones.

Because this rocket needs to be reused, compared with the previous disposable rockets, there is an additional process of controlling the rocket to return to the ground.

The control system part is more complicated than the previous control system.

"Adaptive attitude perception, the current problem is that the current domestic chips cannot process so much data at the same time, and only imported chips can be used."

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

At the same time, the amount of data processing required has nearly tripled compared to previous rockets.

This has caused the current domestic industrial control chips to be unable to quickly process such a large amount of data.

"If domestic chips are used, the rocket's attitude adjustment system will experience a delay of 0.1 to 0.2 seconds."

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

"Hey, this is indeed a problem, and it's not so easy to solve."

After Zhang Xingyang heard this, he was also very helpless. These days, the domestic electronics industry is almost behind in all aspects. In this regard, Zhang Xingyang currently has no quick solution to the problem.

"Let's put this question first, how is the effect of adaptive adjustment, and how much accuracy can it achieve."

The self-adaptive adjustment of rocket attitude is mainly achieved by constantly fine-tuning the nozzle angles of each rocket engine.

The accuracy rate represents the offset of the rocket from the orbit during the entire launch process.

The higher the accuracy rate, the smaller the orbital offset.

"The accuracy rate is not bad, and the accuracy rate of the latest control scheme can reach 99.1% now."

"That's not bad, keep working hard!"

This meeting is almost over here. Zhang Xingyang said that he might not be there in the next few days, and let everyone try to resolve it through consultation.

"If you have any questions, please discuss with yourself first. If you are in doubt, please call me."

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