This is how black technology should be used

Chapter 200
After being reminded, netizens realized the intention of practical technology!
It really wants to build an "airplane"!
The aerospace plane is a new type of space transportation system that can be used for both aviation and spaceflight. It integrates an aircraft, a space vehicle and a spacecraft. It can also be used as a manned spacecraft.

It can take off horizontally like an ordinary plane, and then fly in the atmosphere at supersonic speed, and the higher the altitude, the thinner the air, the faster it can fly. In the high-level space with thin air, it can fly to more than Mach 20.

At this time, it can directly accelerate into the earth's orbit and become a space vehicle. After returning to the atmosphere, it can land at the airport like an airplane and become a means of transportation between the sky and the earth freely.

In the early days, aviation and aerospace were two different technical fields. Aircraft and aerospace vehicles moved in and out of the atmosphere respectively. The air transportation system was reusable, and the space delivery system was generally not reusable.

The aerospace plane can achieve the goal of complete reuse and greatly reduce the cost of space transportation.

Although there are reusable rockets now, the versatility, diversity and convenience of recyclable rockets are far worse than aerospace aircraft.

But although the idea of ​​an aerospace plane is good, it is quite difficult to manufacture it.

The first level that blocks the road is the engine.

Because the flight range of aerospace aircraft is from inside the atmosphere to outside the atmosphere, and the speed can also range from Mach 0 to more than Mach 20. Such a large speed span and change in the working environment are impossible for all existing single types of engines. Therefore, developing a new engine for aerospace aircraft has become the key to the entire project.

As we all know, jet engines need to inhale air in the atmosphere and do not need to carry oxidizers, but they cannot work outside the atmosphere and the speed is relatively small.

The rocket engine has its own oxidant, which can work in and out of the atmosphere, and has a wide range of speeds, but the oxidant it carries is relatively bulky and has a small specific impulse.

Each rocket engine is a big gas guzzler... no, it's a huge gas guzzler!

Even if the rocket fuel can account for more than 90% of the take-off weight, it will be over in a few minutes or ten minutes.

This amount of time is comparable to a shiver for an aircraft in the atmosphere that takes several hours of flight time, and it is only the warm-up level just after taking off.

Therefore, the power of the envisaged aerospace aircraft is generally a combination of supersonic combustion ramjet + rocket engine or turbojet + ramjet + rocket engine.

However, there are quite a lot of technical problems in the development of scramjet engines, and the simple combination of multiple engines will make the structure too complicated and unreliable, so the progress is stuck here.

No matter what it is, the more complex it is, the more fragile and unreliable it is.

And the more things are piled up, the greater the weight of the aircraft, so it needs to carry more fuel, and more fuel means heavier, so it has to carry more fuel...

If this kind of matryoshka growth occurs, then the aircraft will definitely not be able to be built.

But if there is metallic hydrogen on the side of Fanxing, the situation will be different.

Metal hydrogen, it is 200 times more energy than the best aviation fuel, and its volume is one-seventh of liquid hydrogen, but the thrust generated per kilogram of metal hydrogen is equivalent to five times that of liquid hydrogen and liquid oxygen rocket fuel per kilogram, and its specific impulse It is far beyond the 5s of hydrogen-oxygen fuel!

With such a huge batch of fuel, only "little" is enough to make the aircraft fly for a long time!
As for why the previous scientists did not consider new fuels, but insisted on smashing new engines, it is because finding and manufacturing super fuels is much more difficult than developing super engines.

But who would have imagined that Fanxing would actually make out the super fuel first!
Although the metallic hydrogen currently owned by Fanxing is solid, theoretically speaking, solid metallic hydrogen can be converted into a liquid state, but the conditions are harsher and more energy is consumed.

After all, solid metal hydrogen also existed theoretically before, and it hadn't been manufactured yet.

Many people even suspect that Fanxing has mastered the technology of producing liquid metal hydrogen, because some professionals have studied the structure and landing process of the outpost test module and found that the amount of conventional fuel it carries is simply not enough to land on the moon smoothly. It must be super fuel.

Needless to say, it must be metal hydrogen.

It's just that no one has seen what the landing engine of the outpost test module looks like, and no one has seen its working status. The landing video is only a shot of the lunar surface, and the engine is not photographed at all.

Theoretically, a solid-fuel engine could also land on the moon, but that kind of precision is too demanding.

And it is the kind of precision that needs to be calculated in advance, and one step cannot be wrong.

Just a little bit wrong, and the outpost test module will definitely fall on the moon.

At the beginning, Chandrayaan-[-] of the Peacock Kingdom ran out of control and crashed...and landed hard on the moon because the liquid fuel engine was not accurate enough.

The fault tolerance rate of liquid fuel engines is much higher than that of solid fuel engines, even that can fail, let alone solid fuel engines.

But in theory...a solid fuel engine could still perform such a task.

But if the outpost test cabin used liquid metal hydrogen fuel, then the landing would be relatively simple, and it also meant that Fanxing had mastered the method of making liquid metal hydrogen.

Although the manufacturing conditions are very harsh, it is acceptable as long as it can be manufactured and the troubles in the subsequent use process, especially after entering space, are resolved in advance.

Not to mention that outsiders don't know how difficult and costly it is for Fanxing to produce solid metal hydrogen and liquid metal hydrogen. What if... it's not very difficult and the consumption is not too great?
Anyway, after an analysis, most people already feel that this "aerospace plane" can enter orbit on a single stage, and despite its small size, its carrying capacity should be pretty good.

With super fuel, it is inevitable that there is no need to develop complex engines that combine several functions into one, and rocket engines can still be used to fly inside and outside the atmosphere.

However, the old-fashioned rocket engine cannot be used. This new engine needs to withstand high temperatures for a longer period of time, and the adjustable power output range must also be large.

After all, one of the characteristics of an aerospace plane is that it accelerates softly. Unlike rockets, which come up with full power, the G force generated is too large, which puts a lot of pressure on astronauts, and is not friendly to tight instruments.

Then... just fly!

What consumes the oxygen in the atmosphere to reduce the weight of fuel is completely unnecessary, even the air intake is not needed, and the integrated shape can also increase the strength of the body.

As for the problem of high-temperature friction, people also think that there is no problem in view of the endless emergence of new materials in practical science and technology.

So now the only question is...

"Is this a real machine?"

"Yeah, practical technology is too stupid. Watching the video is like not watching it, and there is no information at all!"

"Practical technology can give me an explanation!"

"I'm so anxious!"

"Please, tell me the truth, it's an aerospace plane!"

"I don't even feel like eating if I don't know the truth."

Not only aerospace enthusiasts and netizens want to know the truth, those aerospace professionals, as well as the military of major countries want to know!

In particular, it is necessary to name the Freedom Federation.

　(T ^ T) The seasons change, the heating suddenly stops at home, I catch a cold, cry, sneeze, runny nose... I feel like I'm going to be useless
　　
　
(End of this chapter)