The new year has entered everyone's lives quietly.
Although the country began to establish statutory holidays last year, for units with heavy scientific research tasks like the Rocket Research Institute, there are basically no holidays.
On New Year's Eve, everyone made dumplings together in the cafeteria of the institute to celebrate the New Year.
Since last December, the propulsion system of the new recyclable rocket was initially finalized.
The development of the entire new rocket has entered a full-system integration stage that requires constant adjustment.
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 Rockets.
Because the people in charge of each system basically have their own ideas, and coordinating the conflicts between them is what Zhang Xingyang spent a lot of time on during this period.
That is to say, Zhang Xingyang showed unparalleled scientific research strength last year and convinced these young people who almost only have technology in their eyes.
Coupled with the relatively good personal relationships between several major system leaders, conflicts between various systems were not intensified.
"Su Xiao, how is the outer insulation material of the rocket going? We are still waiting for the aerodynamic analysis of the shape!"
Qiao Yang, who is the person in charge of rocket mechanics analysis, asked Su Xiao, who was in charge of materials, very rudely at Monday's meeting of the heads of various systems.
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 is responsible for, the outer insulation materials developed during this period are not very effective and cannot achieve good insulation effects, so they have been overthrowing them and starting over.
This also resulted in the delay in determining the specific materials used for outer insulation, which brought great trouble to Qiao Yang, who was responsible for the mechanical analysis of the rocket.
"Material development is never that 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. It's estimated to take another month or two. However, we have already estimated the approximate performance of the material and can give it to you for use first."
Rocket shell materials are generally made of titanium alloy, beryllium alloy or aluminum alloy.
During the rocket's takeoff or landing, due to the severe 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 were burned, causing the rocket to malfunction.
Therefore, the rocket's outer insulation material, or ablation-resistant insulation coating, is very important.
Su Xiao's materials laboratory has recently developed ablation-resistant heat-insulating coating materials. The main body is made of organic resin synthesized from silicon, phosphorus, nitrogen, boron, chlorine and other elements. It also has the characteristics of high temperature resistance and self-extinguishing.
After adding carbon boron fiber and selenium oxide, selenium oxide will sublimate in a high-temperature environment, taking away part of the heat from the surface of the rocket while volatilizing, and leaving 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.
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 more reliable, otherwise our control system will be burned out and the rocket will fall!"
Zhang Xingyang also expressed his attitude appropriately at this time:
"I have been paying attention to the materials, and there will definitely be no problems."
"Qin Ming, don't worry, your control system will definitely not be burned."
"As for the development time, you don't have to worry. Su Xiao and the others have already found the direction and method of developing the material. They will definitely be able to produce the material in no more than a month."
"Qin Ming, how is the current progress of the control system, especially the attitude sensing and adaptive aspect, has it been completed?"
During the previous period, Zhang Xingyang's main time and energy was focused on the propulsion system and the rocket's ablation-resistant and heat-insulating coating.
He doesn’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 early work on the control system was not very complicated, because it was difficult for them to carry out real development work before the propulsion system and appearance design were completed, so Zhang Xingyang did not invest too much energy in these aspects.
But now the rocket's propulsion system and appearance design 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 still some differences between this control system and the previous one.
Because this rocket needs to be reused, compared with previous disposable rockets, there is an additional process of controlling the rocket to return to the ground.
The control system part is more complex than the previous control system.
"The current problem with adaptive attitude sensing is that current domestic chips cannot process so much data at the same time, so we 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 needs to be adjusted in angle.
The amount of data processing required at the same time has increased by nearly three times compared to previous rockets.
This results in the current domestic industrial control chips being unable to process such large amounts of data quickly.
"If domestic chips are used, the rocket's attitude adjustment system will have a delay of 0.1 to 0.2 seconds."
This delay time may not be a big deal in other industrial fields, but in the aerospace field where time requirements are as strict as thousandths of a second, it is a very large number.
"Hey, this is indeed a problem, and it's not that easy to solve."
After Zhang Xingyang heard this, he was also very helpless. The domestic electronics industry was lagging behind in almost all aspects these days. In this regard, Zhang Xingyang currently had no way to quickly solve the problem.
"Let's put this question aside for a moment. What is the effect of adaptive adjustment and what is the accuracy rate?"
Adaptive adjustment of rocket attitude is mainly achieved by continuously fine-tuning the nozzle angle of each rocket engine.
The accuracy represents the offset of the rocket's orbit during the entire launch process.
The higher the accuracy, the smaller the orbit deviation.
"The accuracy rate is not bad. The latest control scheme now has an accuracy rate of 99.1%."
"That's not bad, keep working hard!"
This meeting is almost over here. Zhang Xingyang mentioned that he might not be there in the next few days and asked everyone to try to resolve any issues through negotiation.
"If you have anything, please discuss it with yourselves first. If you are really unsure about anything, call me."
As for Zhang Xingyang's next stop, it is Tianfu City.
