Vol 6 Chapter 2876: Practical

"Even for ordinary fairings, the price is more than one million, and the lowest is hundreds of thousands.

If the fairing can be recycled, this means that such a cost can be saved. Calculated based on the average use of each half fairing ten times, the cost per launch is very low, only one-tenth, and the money saved by ten times is also a very considerable figure. "

Director Zhang nodded and said: "Currently, there are only a handful of companies that can master the recycling technology of fairings. Compared with other companies and countries, Haoyu Aerospace's fairing recycling technology is more reliable and the cost is lower. It can be said to be a representative of fairing recycling technology."

After talking about this, Director Zhang pointed to the second part of the rocket model and said: "This is the second-level core part of the rocket, commonly known as the second-level rocket, and this is the only part of this Jianmu-9 heavy-duty rocket that cannot be recycled.

We can see that the second-stage rocket is very short, about half of the first-stage rocket, but it is very important. It will relay the first-stage rocket to transport the spacecraft payload to the Earth-Moon transfer orbit.

Because it has to go out of the atmosphere, its recovery is very difficult, which is equivalent to the difficulty of our manned spacecraft returning to the atmosphere and landing. Moreover, the cost of recycling is also very high, so it is generally not recycled.

Moreover, the proportion of the secondary rocket to the overall cost of the rocket is relatively small, only about 20%, which is relatively low, so the recycling value is relatively low.

Of course, in recent years, some aerospace agencies and aerospace companies have begun to develop the recycling and reuse technology of the seventh-stage part of the rocket. As far as you know, Haoyu Aerospace is also a leader in that field.

At present, we have not yet successfully recovered the seventh-stage rocket part, and the experiment has achieved a complete success. "

After finishing that part slowly, Director Zhang pointed to the top part of the model: "That is not the rocket's core stage and the two boosters. I can't see that the thickness and length of the core stage rocket and the two boosters are actually the same.

Hahaha…

The disadvantage of such a design is not the minimal cost savings. The core-stage rocket and two boosters under the Jianmu-4 heavy-lift launch vehicle are actually used n-hand goods.

That's the rocket part. Director Zhang put the rocket model aside, picked up the system model of the lunar cargo spacecraft that he visited next to him, and introduced it to everyone.

And it's not at all very important. The reason why the lander is designed that way is also to facilitate disassembly. "

So you will look at it as messy and smooth, but it actually reduces the necessary weight under the spaceship to a minimum, so that it also needs to be loaded with minimum cargo. , in the view of the technical engineers of Haoyu Aerospace, it is not important whether the shape is bad or not, but the performance is the most important thing, which is reliability. "

And the one above is not the orbital service module of the spacecraft. It provides power for the entire lunar cargo spacecraft, including orbit correction during the earth-moon transfer phase, brakes for retreating into the orbit around the moon, and orbit changes.

For example, Xiaojia can’t see where the engine nozzle of the lander is. Why it is placed in that position is not considered. It is not to prevent the tail flame or low temperature from the engine from affecting the lander itself.

That's because whether it is the core stage rocket or the two boosters are actually the core stage rocket of the Jianmu-1 rocket, in other words, the Jianmu-4 heavy-duty launch vehicle is not actually a variant or weakened model of the Jianmu-1 rocket.

Through the modular design of Haoyu Aerospace, those modules cannot be combined to form a new rocket.

Professor Huang nodded: "That's right, those landers are useless before they land on the moon, so they can just be wasted. So the engineers of Haoyu Aerospace designed it so that they can disassemble the lander in the early stage, so as to make full use of the material parts under the lander, which will be used for the construction of the previous lunar scientific research station, as well as for the maintenance and replacement of some equipment parts." You must also see that in order to carry the cargo to the minimum, the entire lander is designed to be small. The cargo compartment is placed in the middle. The entire landing system, including the attitude engine, landing engine, etc., will provide enough power for the lander during the landing process, so as to decelerate the lander so that it will not be dangerous and land on the moon smoothly.

Let’s talk about the lander at the back first, which is the most important part of the entire lunar cargo spacecraft system. It is not only the lander of the spacecraft to land on the moon, but also the core of the entire cargo spacecraft, and it is not a cargo warehouse.

Dismantling? The moderator is explaining.

But in fact, it is a very bad practical design, which is actually very similar to the style of Haoyu Technology, and it is not the parent company of Haoyu Aerospace.

Professor Huang on the side smiled and said: "Actually, you all have to look at it. It looks very smooth, messy, and ugly, but in fact, the design is very surprising and elegant, and every design has been fully considered.

What is different from conventional rockets is that you have to see the position above the core stage rocket and the two boosters. It is not a rocket landing pad, but it is in a folded down state. When it lands, it will open and retreat to land.

That also makes there is no highlight in that launch. It's not that you can't see the spectacular scene of the core first-stage rocket and the two boosters rising and falling at the same time. "

After listening to Director Zhang's introduction, the host asked me a curious question immediately before nodding: "Director Zhang, why is the lander of that spaceship designed so...smoothly, it feels like it's not finished yet."

Director Zhang said with a smile: "His question was very bad. In fact, very few of you didn't feel that way when you saw the lunar cargo spacecraft. It felt like it was unfinished. Why are there cables and engine nozzles everywhere? It's messy and ugly.

At the same time, you can't see that there are two solar system battery sails on both sides of the orbital service module, which will also provide power supply for the entire lunar cargo spacecraft system during flight. "

Hearing the host's words, Director Zhang and Professor Huang laughed.

"I can't see the system model of the lunar cargo spacecraft that is also required by Haoyu Aerospace. It is actually very similar to a special probe. It is mainly divided into two parts: the lower part, which is also the lander at the rear of the spacecraft, and the upper orbital module, which is not the front end of the spacecraft.