Chapter 1,744 The military will definitely be interested in this technology
【Corrected version】
After hearing Wu Hao's words, everyone immediately understood the meaning of his words. The implication of his words was nothing more than a cost issue. If the cost is too high, then there is no need to implement this technology.
When Qin Xinghe heard this, he waved his hand at him and said, "Let's not talk about this for now. Let's talk about the technical aspect and what stage of development you have reached."
Upon hearing this, Wu Hao glanced at Qin Xinghe and immediately responded: "The current technology development work is progressing very smoothly. Some of the technical problems that troubled me before have been solved. Now we can carry out a series of verification and field experiments."
After he said this, everyone also had a basic understanding. In other words, there are no technical problems with this Jianmu-2 special launch vehicle, and now there are only problems with cost control.
"The second stage of your Jianmu-2 special rocket uses the same flying wing structure layout as the Russian aerospace department." Some experts asked Wu Hao.
"Indeed, Russia is developing a recyclable rocket, and its second-stage rocket also adopts this flying-wing design layout."
Wu Hao smiled and nodded: "Yes, but the specific design concept was developed based on the way the space shuttle flew and landed when it returned, and the aerodynamic shape of the cruise missile when it was flying."
"Can you tell me more specifically?" a leader asked at the scene.
Wu Hao glanced at everyone, and then nodded and said: "Actually, we have thought about many plans regarding the landing method of the second-stage rocket. For example, there are direct use of engine reverse thrust landing, and use of the same method as our Jianmu-2
They land like parachutes like rockets, and there are also flying-wing gliding landings.
Each of these options has its own advantages, and of course each has its own limitations or shortcomings. After a comprehensive discussion, we first eliminated the first landing method.
The flight altitude of the two-stage rocket is millions of kilometers. To land, it must first return to the atmosphere. If it carries too much fuel, it is likely to cause the fuel inside the rocket to overheat and cause deflagration. This is definitely not possible.
Even if this problem is solved, when landing at such a height, the rocket engine must continue to ignite and decelerate, and its working time will be greatly extended. This will not only consume too much fuel, but also cause damage to the rocket engine.
Consuming too much fuel for landing means carrying more fuel during launch, which will inevitably sacrifice the payload transportation capacity of the rocket. It used to be six tons, but it may now be doubled to three tons or even more.
Anything less is obviously not cost-effective.
Long-term operation of the engine means damage to the engine. There are only two solutions. One is to enhance the quality of the engine so that it can work for a longer time. The other is to replace the engine with a new one after landing. These two solutions
No matter where this method is used, it will add huge costs. Calculated in this way, it is not much cheaper than building a new two-stage rocket, which is very uneconomical.
So, we focused our attention on the parachute landing method. We have successful experience in this aspect, and it should be said that it is the most confident. But if you use the parachute method to land, the first-stage rocket is okay. For the second-stage rocket, this method is used.
It's a bit like landing a manned spaceship to return to the capsule.
The height is too high. If you use a parachute to land, the landing point is difficult to control and can only be predicted. Therefore, the uncertainty of the landing location of the rocket limits the application of this technology. Secondly, the second-stage rocket is so high, if it is not on a flat surface
It will tip over when it lands at the landing site. Rockets are no better than other rockets. Such a tip over and a violent impact will inevitably cause some failures, which will not be easy to repair, and the cost will naturally go up.
Moreover, carrying such a large set of parachutes will inevitably increase the weight, which will also seriously squeeze the load transportation weight, thereby reducing the carrying capacity of the rocket. It is also a disguised increase in cost, which is not very cost-effective.
So, we focused our attention on the method of landing by flying wing gliding.
Compared with the previous two types, the flying wing gliding landing structure does not rely on the long-term use of the engine, thus extending the working life of the engine. Second, it does not need to carry such a large parachute group, so it does not take up the weight of the load transportation.
Third, the flying wing structure is less affected by the weather and is easy to control, so that its flight attitude, route, landing site, etc. can be controlled, increasing its overall reliability and safety."
Speaking of this, Wu Hao paused, looked at everyone, and then changed the topic and said: "Of course, this method also has many shortcomings. For example, first of all, it is technically difficult to glide from hundreds of kilometers into space.
It re-enters the atmosphere and then glides back to the landing ground. The technology used in this process is undoubtedly top-notch.
This orbiter re-entry and return technology is a top-secret technology currently being actively developed by the militaries of various countries. Currently, there are only a few fingers that master this technology.
It's not that other countries don't want to do it, it's because this technology is too difficult.
The gliding landing technology we are going to use can be said to be comparable to the orbiter re-entry and return landing technology, and may even be more difficult in some aspects.
For example, when it first re-enters the atmosphere, how to control its speed to avoid friction with the atmosphere at too fast speed, thereby avoiding being burned in the atmosphere.
Secondly, when landing, the speed of gliding from hundreds of kilometers to a relaxed landing is undoubtedly very fast. How to slow down, how to land, etc. are also a big problem before us.
Of course, these are all technical problems that we can overcome. However, solving these problems will undoubtedly bring continuous increasing costs. As a commercial company and a commercial project, we have to consider cost factors.
If the cost is too high, then it will not be cost-effective to carry out this technology. After all, our original intention of developing this technology is to make money."
After hearing Wu Hao's explanation, everyone present nodded to express their understanding. Wu Hao was right. The biggest purpose of this rocket return and reuse technology is to reduce the cost of a single launch of the rocket and thereby achieve profitability.
.If the cost is too high, then there is no need to continue using this technology.
But for such a good technology to be abandoned due to cost reasons, everyone present must be a little reluctant. But everyone is short of money, so they can't think of any good ideas for a while.
At this time, Qin Xinghe smiled at Wu Hao and said, "Xiao Wu, I think your vision can be broader, and don't just limit it to Qingshui Yamen like our aerospace system."
"What do you mean?" Wu Hao thought of something in his mind, but he didn't react for a while.
Qin Xinghe smiled and said: "Military, I believe that the military will definitely be interested in such a project. You might as well look for them. You have a good relationship with them. I don't need to teach you how to do it."
Oh, Wu Hao suddenly came to his senses and immediately burst into laughter. Indeed, how could he forget this?