Vol 2 Chapter 1744: This technology will certainly be of interest to the military

Hearing Wu Hao's words, everyone immediately understood what he meant. It was nothing more than a cost issue. If the cost is too high, then this technology has no value in implementation.

　　 Qin Xinghe waved his hand at him and said, "Let’s not talk about this, let’s talk about the technology. What stage have you developed?"

　　Wu Hao took a look at Qin Xinghe when he heard the words, then nodded his head and replied: "Currently, the technology development work is progressing very smoothly. Some of the technical problems that have plagued me have been resolved, and a series of verification and field experiments can be carried out."

　　 Hearing what he said, everyone also had a basic understanding. In other words, there are no technical problems with the Jianmu-2 special launch vehicle, and now only the problem of cost control is left.

　　 The second-stage rocket of your Jianmu-2 special rocket uses the same flying-wing structure as the Russian aerospace department. An expert immediately asked Wu Hao.

　　 Indeed, Russia is developing a recyclable and reusable rocket, and its secondary rocket also adopts this flying-wing design layout.

　　Wu Hao smiled and nodded, "Yes, but the specific design idea is based on the flight and landing method of the space shuttle when it returns, and the aerodynamic shape of the cruise missile when it is flying."

　　 can you tell me more! A leader suggested at the scene.

Wu Hao glanced at the crowd, then nodded and talked: "In fact, we have thought of many plans regarding the landing method of the second-level rocket. No. 1 rocket landed on a parachute, and also landed on this kind of flying-wing gliding.

　　 Each of these programs has its own advantages, and of course each has its own limitations. After conducting a comprehensive discussion, we first ruled out the first landing method.

The second-stage rocket flies at an altitude of several million kilometers. If you want to land, you must first return to the atmosphere. If you carry too much fuel, it is likely to cause the fuel inside the rocket to overheat and deflagration. This is definitely not acceptable. .

　　 Even if this problem is solved, the rocket engine must continue to ignite and decelerate for landing at such an altitude, and its working time is greatly extended. As a result, not only will it consume too much fuel, but it will also damage the rocket engine.

Excessive fuel consumption means carrying more fuel when launching. For example, it will sacrifice the rocket’s load carrying capacity, which used to be six tons. It may now be reduced to three tons or less. Now, this is obviously not cost-effective.

　　 The long-term operation of the engine means damage to the engine. The solution is nothing more than two, one is to enhance the quality of the engine, so that it can work longer vision. The other is to replace the engine with a new one after landing. No matter where these two methods are, they will add a huge cost, so that it is not much cheaper than building a new rocket, and it is not cost-effective.

　　 So, we have focused our attention on the parachute landing method. We have successful experience in this regard, and it should be said that we are most confident. However, if you use a parachute to land, it's okay to say that the first-level rocket, and the second-level rocket, using this method is a bit like landing a manned spacecraft.

　　The altitude is too high, and it is difficult to control the landing point and can only be predicted. Therefore, the uncertainty of the landing location of the rocket limits the application of this technology. Secondly, the second-level rocket is so high that if it is not chosen to land on a flat landing field, it will fall. The rocket is no better than other ones. Such a dumping and violent impact will inevitably bring some failures, and it will not be easy to repair, and the cost will naturally increase. NS.

　　 And carrying such a large set of parachute sets will inevitably increase the weight, which will also seriously squeeze the weight of the load, thereby reducing the carrying capacity of the rocket. It is also a disguised cost of extra cost, which is not very cost-effective.

　　 So, we focused our attention on using flying wings to glide and land.

　　 Compared with the previous two, it adopts flying wing gliding and landing structure, one can not rely on long-term use of the engine, thereby extending the working life of the engine. Second, there is no need to carry such a medium parachute set, so there is no need to squeeze the weight of the load.

　　 Three, the structure of the flying wing is less affected by the weather and is easy to control, so that its flight attitude, route, landing field, etc. can be controlled, increasing its overall reliability and safety. "

Speaking of this, Wu Hao paused, looked at the crowd, and then said, "Of course, this method also has many shortcomings. For example, first of all, it is technically difficult. It can glide from a few hundred kilometers of space. The way to re-enter the atmosphere, and then glide back to the landing surface, the technology used in this process is undoubtedly top-notch.

　　 This orbiter re-entry and return technology is a top-secret technology that the military of all countries is actively developing, and only a few fingers currently master this technology.

　　It's not that other countries don't want to, but because this technology is too difficult.

　　 And the gliding landing technology we are going to use can be said to be comparable to the orbiter reentry and return landing technology, and it may even be more difficult in some respects.

　　 For example, when it first re-enters the atmosphere, how to control its speed so that it avoids friction with the atmosphere too fast, so as to avoid being burned in the atmosphere.

Secondly, when landing, landing from a few hundred kilometers with a relaxed gliding, this speed is undoubtedly very fast, how to slow down, how to land, etc., this is also a big problem in front of us~www.readwn .com~ Of course, these are technical door-to-door problems, and we can all solve them. But the solution to these problems is undoubtedly the increasing costs. As a commercial company, as a commercial project, we have to consider the cost factor.

　　If the cost is too high, then it would be uneconomical to implement this technology. After all, our original intention of developing this technology is to make money. "

　　 Hearing Wu Hao's explanation, everyone present nodded to express their understanding. Wu Hao is right. The biggest purpose of this kind of rocket return and reuse technology is to reduce the cost of a single rocket launch and thus achieve profitability. If the cost is too high, then this technology is no longer necessary in this way.

　　 But such a good technology has to be discarded because of the cost, and everyone present must be a little reconciled. But everyone is short of money, so they can't think of any good attention for a while.

　　 At this time, Qin Xinghe smiled at Wu Hao and said: "Xiao Wu, I think you can open your eyes more, not just confined to the clear water yamen like our aerospace system."

you mean? Wu Hao thought of something in his heart, but he didn't react for a while.

　　 Qin Xinghe said with a smile: "Military, I believe the military will definitely be interested in such a project, you might as well look for them. You have a good relationship with them, so I don't need to teach you how to do it."

　　 Ha, Wu Hao just came here suddenly, and then burst into laughter. Indeed, how could he forget this.