Military Technology

Looking at the white arrow body quietly standing next to the launcher, the two couldn't help picking up the host of the customized smart AR glasses that Wu Hao had previously given them to take a photo. Is this method of landing reliable? The engine needs to be re-ignited during landing, which is very difficult. Lao Ma asked.

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

However, we have used a new ignition technology to increase the engine re-ignition rate to over 98%.

And we have a backup plan. When the rocket launcher is opened, there will be a rope tied to the heavy object to fall.

If an ignition is successful, then the rope will be burnt by the flame ejected from the engine.

If the ignition fails, the standby ignition mode will be activated immediately after the heavy object tied to the rope falls to achieve emergency ignition. "

Very clever way! Lao Ma couldn't help but exclaimed. This method looks primitive and backward, but it is very reliable and useful.

Xiao Ma raised another question that he was more concerned about: "Is the whole process a bit too cumbersome? Why not try to use the direct recovery method of 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, the direct landing and recycling method cannot be realized.

In fact, the technical aspect can also be overcome. The most important thing is the material problem, especially the special materials used in the engine. Our country is still relatively inadequate in this respect.

The second is the cost aspect. No matter which method is used, everyone's goal 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 approach that is more in line with our own.

Of course, we will not be satisfied with this. Related scientific research projects have been approved. I believe that everyone will hear the good news soon. "

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

Compared with other technologies, material technology does not have any effective shortcuts, it depends entirely on time. Western developed countries have used it for hundreds of years, but we have only a few decades in this area, and the gap is still relatively large.

However, what Zhou Xiangming said was correct. Either way, the ultimate goal is to reduce costs. So from this perspective, this method is also very good. Not only is it in line with the actual situation, but it can also further reduce costs.

This collapsible launch vehicle has a lower cost than the low-cost one-off launch vehicle that you have made before. Lao Ma turned his head and asked Wu Hao.

Seeing this, Wu Hao smiled and replied: "The two rockets have different positioning and carrying capacity. In terms of manufacturing costs, the cost of this low-cost one-off launch vehicle is of course lower, but But the first-stage rocket body of the retractable rocket is reused, so this part of the cost is offset.

So on the whole, the cost of the retractable launch vehicle is relatively lower. However, this rocket is not suitable for all occasions. Like some special orbit satellites, the first-stage rocket body is difficult to recover, so this low-cost disposable rocket is needed for launch at this time. "

If we want to launch a satellite, how much does it cost? Old Ma said with interest.

Wu Hao shook his head: "This should be calculated based on actual conditions, such as the weight of your satellite, orbital height, whether it is launched independently or jointly, and other comprehensive factors.

Calculated on the basis of a small earth-orbiting satellite of 100 kilograms, 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, a rocket needs to be launched into space, so we have to calculate the cost of launching a single rocket to calculate the price of the satellite. If more one-time satellites are launched, the price of each satellite will be cheaper. "

Lao Ma nodded when he heard this, Wu Hao's words were fine. 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 that Wu Hao confided before, it is still very cheap. So not only Lao Ma, but even Xiao Ma is thinking about it to see if he wants to launch a few satellites for fun.

How about the cost of manufacturing a communications satellite? Xiao Ma couldn't help but asked.

Wu Hao and Lao Ma were not surprised that Xiao Ma asked questions like this. Because Penguin’s main business is instant messaging, it’s understandable to want to launch a communications satellite of its own company~www.readwn.com~ However, Wu Hao still shook his head and said: "The same, affect a satellite There are a lot of prices. In simple terms, it depends on the weight of your satellite and the designed operating life in orbit.

The heavier the quality and the longer the operating life in orbit, the price will naturally rise.

In terms of complexity, the quality of all the equipment in your satellite depends on what level you use, whether it is cheaper or more expensive. There is 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 concessions and subsidies in satellite manufacturing prices, which should be much cheaper. "

After hearing his introduction, Lao Ma nodded and said: "I really have some understanding in this regard. A while ago, we had a meeting with our map business team. The content of the meeting was to discuss, that is, whether you want G song. The same, manufacture and launch our own optical remote sensing satellite.

To be honest, the map team was very eager, and came up with their carefully prepared plan and feasible report.

However, when 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 for the earth. However, the manufacturing 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. The satellite's R&D and manufacturing cost accounts for the bulk, and the R&D and manufacturing cost of a single satellite reaches hundreds of millions of dollars.

Among them, the launch cost is still very low. The satellite's R&D and manufacturing cost accounts for the bulk, and the R&D and manufacturing cost of a single satellite reaches hundreds of millions of dollars.

In this regard, people say that this is still very cheap, and it is more expensive if you change it to an expensive one. "