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

As for Zhou Xiangming, he glanced at Wu Hao, and after getting his permission, he replied: "It is very difficult, especially in the process of descending, there is wind, so it is difficult to re-ignite."

However, we have taken advantage of a new ignition technology that has increased the re-ignition rate of their engines to more than 98 percent.

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

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

If ignition is inconclusive, the standby ignition method is activated as soon as the weight tied to the rope hits the ground, so that emergency ignition can be achieved. ”

Very clever way! The old horse couldn't help but admire. This method may seem primitive and backward, but it is very reliable and effective.

Xiao Ma Ge threw out another question he was more concerned about: "Is the whole process a little too cumbersome, why not try to use the direct recycling method of Falcon rockets?" ”

Zhou Xiangming shook his head with a wry smile when he heard this: "Of course we want to use it, but with our current technical level, we can't achieve that direct landing and recovery method."

In fact, the technical aspect 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.

The second is the cost aspect, no matter which way, everyone's goal is the same, that is, recycling, and reducing costs to the greatest extent.

So combining these two aspects, we chose a technical approach that is more in line with our own.

Of course, we will not be satisfied with this, the relevant scientific research projects have been approved, and I believe that soon, everyone will be able to hear the good news. ”

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, there is no effective shortcut to material technology, and it is completely dependent on time. The developed countries in the West have used it for hundreds of years, while we have only a few decades in this regard, and the gap is still relatively large.

However, what Zhou Xiangming said was right. Either way, the ultimate goal is to reduce costs. So from this point of view, this way is also very good. Not only is it realistic, but it can also further reduce costs, which can be described as a double benefit.

This retractable launch vehicle is a bit less expensive than the low-cost single-use launch vehicle that you had before. The old horse turned his head 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, so it offsets this part of the cost.

Therefore, on the whole, the cost of the retractable launch vehicle is relatively lower. However, this rocket can not be used on any occasion, like some satellites with special orbits, the first-stage rocket body is difficult to recover, so this low-cost disposable rocket is needed for launch. ”

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 orbital altitude, whether it is an independent launch or a joint launch and other comprehensive factors."

According to the calculation of a 100-kilogram small satellite in earth orbit, the launch cost of such a satellite is about 3 million. Of course, the bigger the satellite, the cheaper the unit.

No matter what kind of satellite it is, it needs to be launched by a rocket, so we have to calculate the launch cost of a rocket to calculate the price of the satellite. If there are more satellites launched at one time, the launch price of each satellite will be cheaper. ”

Lao Ma nodded when he heard this, 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 price per kilogram of launch that Wu Hao confided before, it is still very cheap. So not only the old horse, but even the little brother Ma also calculated in his heart to see if he wanted to launch a few satellites to play.

If you build a communication satellite, how much will it cost? Brother Pony couldn't help asking.

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

However, Wu Hao still shook his head and said: "It's the same, there are many things that affect the price of a satellite." To put it simply, it depends on the weight of your satellite, as well as the designed in-orbit operating life.

The heavier the quality and the longer the operating life in orbit, then 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 is also the manufacturing process of the whole satellite, etc., which has a great impact on the price of the satellite.

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

Lao Ma nodded after hearing his introduction 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 build and launch our own optical remote sensing satellites like G-song.

Truth be told, the map team was very eager and came up with their carefully prepared plan and workable report.

However, when they looked at the cost, everyone was silent. The feasibility report proposed the launch of 12 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 12 satellites are as high as more than one billion dollars.

Among them, the launch cost is still very low, accounting for the majority of the satellite R & D and manufacturing costs, a single satellite R & D and manufacturing costs reach hundreds of millions of US dollars.

Among them, the launch cost is still very low, accounting for the majority of the satellite R & D and manufacturing costs, a single satellite R & D and manufacturing costs reach hundreds of millions of US dollars.

That's it, people say it's still very cheap, and it's more expensive to change it to an expensive one. ”