Chapter 214 Ideas and Landing

Seeing Huang Xiuyuan walking out of the room, Zhang Lei hurriedly followed him: "Chairman, you haven't eaten yet..."

"Pack one for me and I'll come back later to eat it."

Facing the resolute Huang Xiuyuan, Zhang Lei stretched out his hand: "Uh... okay!"

Walking to Zhang Peicai's dormitory in three steps and two steps, Huang Xiuyuan arrived at the door and immediately knocked on the door and found that the person who opened the door was Zhang Mingliu.

"Mr. Huang, why are you here when you have time?"

"General Engineer Zhang, is Academician Zhang here?"

An energetic voice came from inside the room: "Xiu Yuan, I'm here, come in and talk!"

Entering the room, not only Zhang Mingliu was here, but also Academician Wang Kan and several other heads of core technologies were also here.

"Everyone is here?" Huang Xiuyuan was a little surprised.

Academician Wang Kan smiled: "It's an old habit. We are used to having a small meeting after the launch mission is completed."

"Do you mind adding me a share?" Huang Xiuyuan pulled out his chair and asked.

Academician Zhang Peicai smiled and shook his head: "It's not too late to welcome you, so why would you mind."

Everyone talked about the gains and losses of this launch mission for a while, and summarized their experience for the next launch.

The Chang 11 launch vehicle has a payload of about 14 tons in low-Earth orbit and 7.5 tons in synchronous orbit. It is a very important launch vehicle for the Beidou satellite that will be launched next.

The weight of Beidou satellites is about 3.1 tons. When properly prepared, Chang 11 can carry two Beidou satellites into synchronous orbit at one time.

The more important thing is that the Chang 11 launch vehicle can be stored for a long time and serve as a strategic projection force for rapid replenishment of satellites.

Under normal circumstances, the filling of liquid oxygen and liquid hydrogen is very slow. In normal space launch missions, there is no big problem, and at most it wastes some time.

But once an emergency comes, it takes about 4 to 24 hours to refill liquid fuel. Plus other inspections and testing times, it won't take a day or two to complete.

This time is obviously too long and contains too many variables, which may be destroyed by hostile forces finding loopholes.

Under the emergency mechanism, the Chang 11's rapid launch capability has very important strategic value.

After discussing for a long time, Zhang Mingliu suddenly seemed to remember something and asked, "Mr. Huang, do you have something to do with Zhang Yuan?"

Huang Xiuyuan reacted immediately and patted his head: "I almost forgot."

He placed the draft on the table and spread it out.

"This is?" Academician Zhang Peicai took out his reading glasses and carefully observed the contents of the draft paper: "Huh? This is the sketch of the launch vehicle..."

Several other people gathered around and looked at the contents of the sketch carefully. They soon fell into deep thought. Academician Wang Kan took out his pen and made calculations in his notebook from time to time to verify what they were verifying.

They had thought about the nanoparticle jet solution before, but during the test, the effect was very unsatisfactory.

The nanoparticle jet solution uses the nanoparticle characteristics of N20 fuel and adds a device similar to a turbofan to suck the fuel particles into the combustion chamber.

The problem is that the fluidity of nanoparticles is too poor. Even with a turbofan suction and injection, there is still no way to meet the high power output in a short period of time.

In addition, this system also has the problem of fuel residue, that is, the turbofan is not completely inhaled and ejected. In the atmosphere, there is also the blessing of Blue Star's gravity, which can make the fuel fall toward the engine; and in the microgravity of space, some of the fuel will not be able to The phenomenon of being inhaled.

At the same time, if the microfluidity of nanoparticle fuel is to be ensured, the fuel volume cannot be compressed and the fuel must be kept in a "fluffy state".

Originally, the small size was the advantage of solid fuel, but this change actually eliminated this advantage, which was obviously not worth the gain.

After careful verification, Academician Zhang finally spoke: "Xiuyuan, your plan is to use multi-level allocation. Will this make the system too bloated?"

Huang Xiuyuan explained: "I have calculated that this system can enhance security. Take a look here..."

On the scratch paper, he quickly drew the emergency escape states of core bodies at all levels.

Huang Xiuyuan's plan is to use multi-stage amortization, because the solid fuel rocket engine is much simpler than the liquid fuel engine. To put it bluntly, it is just a big cylinder.

Through multi-level apportionment, the material requirements of the engine will be directly reduced by at least one level.

To put it simply, when that level of fuel is used up, the core shell is thrown away and the next level of fuel is started.

Generally speaking, the probability of solid fuel engine failure is much smaller than that of liquid fuel. The multi-stage sharing of solid fuel will not cause the control system to be too bloated.

According to Huang Xiuyuan's calculation data, a rocket engine designed in this way only needs a few layers of tungsten silicon inside to basically meet the heat resistance needs. Anyway, it is just throwing it away after use, which is the behavior of a scumbag.

By reducing the number of tungsten silicon layers, these reduced weights can be used in grading systems or even in engine casings, where material thickness and heat resistance requirements can be further reduced.

Academician Wang Kan agrees with this plan, but he is still very cautious: "This needs to be re-verified and tested to find a suitable time."

"It really needs to be verified." Academician Zhang Peicai also had the same idea.

Although Huang Xiuyuan and their calculation data can theoretically compress the weight of the rocket engine casing to only about 34% of its original value, no one dares to guarantee the theory.

What they need to do now is to build a prototype and test the limit of the single-stage engine. They only need to ensure that the engine can be maintained within 50 to 200 seconds of engine use.

Then Huang Xiuyuan said again: "This graded allocation plan can actually be used for precise control."

He pulled out one of the scratch papers, which showed a rocket engine in a honeycomb structure, turning a single large cylinder of solid fuel into a dense honeycomb structure of solid fuel column.

"Please see, we can choose to ignite part of the fuel pillars according to the required power power, thereby achieving relatively precise power output. We can even modify part of the flight attitude through the position of the honeycomb fuel pillars."

Academician Zhang Peicai raised his reading glasses: "This solution is very feasible, but there are several issues that need to be paid attention to. The higher the density of the honeycomb structure, the greater the overall dead weight will be."

"This is a matter of trade-offs. It is not unacceptable to sacrifice part of the payload for precise control." Academician Wang Kan expressed his thoughts.

Huang Xiuyuan smiled: "We don't need to be too entangled. After all, the honeycomb structure engine must be used for flights after low-Earth orbit. In the atmosphere and low-Earth orbit, large cylinders will suffice."

Everyone discussed for more than 8 hours, and it was not until late at night that Huang Xiuyuan was ready to return.

At this moment, the internal broadcast system of the space city rang.

[The Chang-11 launch vehicle core first-stage recovery work was successfully completed at 3:21 on June 16, 2010...]

Zhang Mingliu, who was sending him back, laughed: "Double happiness!"

"General Manager Zhang, are you going back to Magic City the day after tomorrow?"

Zhang Mingliu nodded: "Yes, I will hand over the work here and then you can go back."

"I'm almost done. There are too many things going on in the company, so I can't leave for too long." Huang Xiuyuan said helplessly.

The two talked about cooperation in developing satellites, and then went back to their dormitories.

Let’s talk about the anti-theft chapter. I usually update the anti-theft chapter in the early morning. If you see the chapter updated in the early morning, you can choose to watch it after half an hour. Generally, the content will be restored after half an hour. This will cause inconvenience to everyone. Tolerance.

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