Military Technology

Looking at the white arrow body quietly standing next to the launcher, the two couldn't help but picked up the host of the customized version of the smart AR glasses that Wu Hao had specially given them before and took pictures. Is this method of landing reliable? The engine needs to be re-ignited during the landing, which is very difficult. The old horse asked.

As for Zhou Xiangming, he took a look at Wu Hao, and after getting his permission, he replied, "Yes, it is very difficult, especially when there is wind during the descent, so it is very difficult to restart the ignition.

However, we have used a brand new ignition technology, which can increase the refiring rate of its engine to more than 98%.

And we also have a backup plan, when the rocket launcher is opened, there will be a rope attached to the weight and it will fall.

If the ignition is successful, the rope will be blown by the flames ejected from the engine.

If the ignition fails, the backup ignition mode will be activated immediately after the heavy object tied with the rope falls to the ground, so as to achieve emergency ignition. "

Very smart way! The old horse couldn't help admiring. This method seems very primitive and backward, but it is very reliable and effective.

Brother Xiao Ma raised another question he was more concerned about: "Is the whole process a bit too cumbersome, why not try to use the direct recovery method of the Falcon rocket?"

Zhou Xiangming shook his head with a wry smile and said, "Of course we want to use it, but with our current technical level, we can't realize that kind of direct landing and recovery method.

In fact, the technical aspects can also be overcome. The important thing is the material problem, especially the special materials used in the engine. Our country is still relatively insufficient in this regard.

Secondly, in terms of cost, no matter which method is used, everyone's purpose is the same, that is, to be recyclable and to reduce costs to the greatest extent.

Therefore, combining these two issues, we chose a technical method that is more in line with our own.

Of course, we will not be satisfied with this. The relevant scientific research projects have been established. I believe that everyone will hear the good news in the near future. "

After listening to Zhou Xiangming's words, everyone nodded. Indeed, this is also an important problem that has plagued our country's major technological development for a long time.

Compared with other technologies, there is no effective shortcut in material technology, and it is completely dependent on time. Western developed countries have used it for hundreds of years, but we have only decades in this area, and the gap is still relatively large.

However, Zhou Xiangming was right. Either way, the ultimate goal is to reduce costs. So from this point of view, this approach is also very good. Not only is it in line with the actual situation, but it can also further reduce costs, which can be said to kill two birds with one stone.

Compared with the low-cost single-use launch vehicle that you have produced before, this retractable launch vehicle is cheaper. The old horse turned to Wu Hao and asked.

Seeing this, Wu Hao replied with a smile: "The positioning of these two rockets is different, and the carrying capacity is also different. In terms of manufacturing costs, the cost of this low-cost disposable launch vehicle is of course lower, but The first-stage rocket body of the retractable rocket is reused by customers, so this part of the cost is offset.

So in general, the cost of the retractable launch vehicle is relatively lower. However, this rocket can not be used in all occasions. Like some satellites in special orbits, it is difficult to recover the first-stage rocket body, so this low-cost disposable rocket is needed for launch at this time. "

If we want to launch a satellite, how much will it cost? The old horse said with interest.

Wu Hao shook his head: "This should be calculated according to the actual situation, such as the weight of your satellite, the altitude of the orbit, whether it is an independent launch or a joint launch, and other comprehensive factors.

Based on the calculation of a 100-kilogram small earth-orbit satellite, the launch cost of such a satellite is about 3 million. Of course, the larger the satellite, the cheaper the unit price.

No matter what kind of satellite it is, it needs a rocket to launch into space, so we have to calculate the launch cost of the regular rocket,

In order to calculate the price of the satellite. If too many satellites are launched at one time, they will be spread out equally, and the launch price of each satellite will be cheaper. "

The old horse nodded when he heard the words, and there was nothing wrong with Wu Hao's words. Indeed, there are many factors that affect the price of satellite launches, and it is really impossible to give an accurate figure.

However, judging from the launch price per kilogram disclosed by Wu Hao before, it is still very cheap. So not only the old horse, but even the little Ma was thinking about whether he should launch a few satellites for fun.

How much would it cost to manufacture a communication satellite? Brother Xiao Ma asked involuntarily.

Wu Hao and Lao Ma were not surprised that Brother Ma asked such a question. Since Penguin's main business is instant messaging, it's understandable that it would want to launch a communications satellite of its own.

However, Wu Hao shook his head and said: "The same, there are many factors that affect the price of a satellite. To put it simply, it depends on the weight of your satellite and the design lifespan in orbit.

The heavier the quality, the longer the service life in orbit, so the price will naturally rise.

In terms of complexity, the quality of all the instruments and equipment in your satellite depends on what level you use, whether it is cheap or expensive. There are also the manufacturing process of the entire satellite, etc., which have a great impact on the price of the satellite.

However, the state now encourages private enterprises to invest in space projects, so there will be relevant discounts and subsidies in terms of satellite manufacturing prices, which should be much cheaper. "

After hearing his introduction, Lao Ma nodded and said: "I really have some understanding of this aspect. We had a meeting with our map business team a while ago. The content of the meeting was to discuss whether to Like, build and launch our own optical remote sensing satellites.

To be honest, the map team was very eager and came up with their well-prepared plans and feasible reports.

However, looking at the cost, everyone was silent. The feasibility report proposed to launch twelve optical imaging remote sensing satellites to establish its own commercial remote sensing map system of the earth. However, the manufacturing and research and development costs and launch prices of these twelve satellites are as high as more than one billion US dollars.

Among them, the launch cost is still very low, and the R\u0026D and manufacturing costs of satellites account for the majority. The R\u0026D and manufacturing costs of a single satellite reach hundreds of millions of dollars.

Among them, the launch cost is still very low, and the R\u0026D and manufacturing costs of satellites account for the majority. The R\u0026D and manufacturing costs of a single satellite reach hundreds of millions of dollars.

As far as this is concerned, people say that it is still very cheap, and it is more expensive to replace it with an expensive one. "