Chapter 1514

There are many records about Princess Wencheng in history, but almost no one knows her origin. So far, there is no detailed statement. It is even possible that Princess Wencheng is not the legitimate daughter of Li's collateral. It is possible that the maid may adopt a dry daughter.

All this shows that don't think about contracts. It's useless. Big fists are the truth.

All contracts are forced choices made when both parties cannot physically convince each other.

This is the current situation of mankind. There are more than 200 countries on a planet. These countries fight against each other. However, if one day, an alien civilization suddenly appears in front of the earth, and mankind will be destroyed if they do not unite.

At this time, any racial and religious contradictions have to be put at the back. I can't say that the earth can be quickly unified into a country or a federation, but at least, there is absolutely no problem in forming a united front in a very short time.

If the two sides continue to confront each other and support each other for a long enough time, it is natural that the earth will be unified into a federal state.

Without pressure, everything is futile unless the scientific and technological level of one country can suddenly rise to the point of killing all other countries.

Even so, to tell the truth, if we let China choose at present, China will not choose to engage in reunification or alliance.

Is it not fragrant to develop the Qin and song countries in the world? On the big side, isn't Mars fragrant when developing the moon?

When other countries lag behind to a certain extent, it is difficult for the other party to integrate without cultural infiltration step by step and finally eliminate the other party's culture.

Sometimes, this is the case with each other.

Human life is too short. With a history of more than 100 years, if there are enough wise leaders to make some long-term plans, it is common to destroy each other's culture as long as two or three generations.

Isn't there many examples in China? There are too many waste youths who can't get up anymore. According to the contract, it's only 99 years, actually it's only 156 years.

Therefore, Jiang Yanhai's design at the moment is more about how to return between space and the ground, as well as the design of spacecraft in space.

These designs are unprecedented, and there is no example to consult, because these designs are related to more than a spacecraft. A spaceship should have a complete environmental adaptation system. Human beings consume resources every day.

This is not just a design of a spaceship, it can be solved by providing enough power.

If the spacecraft's own internal circulation system cannot be solved, or not to mention, at least water and air can be solved by itself through internal circulation by more than 50%, then it will have the possibility of real long-term recycling and mutual development between planets.

The second is the base construction on each planet, which needs to be considered.

Energy has only solved the most basic problems, and there are still many, many remaining problems.

But at least, China has come to this step, hasn't it?

We are not just a matter of detection, we are ready to take this step.

Waiting for the emergence of this mechanical octopus, Jiang Yanhai is constantly simulating and manufacturing these space planes advancing between the ground and space in the dreamland simulation program.

If you have enough power, you can really get rid of gravity without having to reach the first cosmic speed in a very short time like a rocket.

After entering space, the air there is thin. At this time, it is easier to provide enough thrust to accelerate above the first cosmic speed.

But how to choose between the two is difficult.

Because you continue to give the aircraft a fixed thrust, even if it is as fast as human walking, it can leave the earth. However, the fuel and energy consumed continuously is undoubtedly very huge.

The rocket cannot carry so much fuel, so the rocket should use the fastest speed to improve the flight speed, but considering the weight of the transported object, there must be a qualified trade-off.

In fact, if there is controlled nuclear fusion, this will be different. It is like that the mainstream ion thrusters in the world are electromagnetic, that is, the concept of electromagnetic railgun accelerates the plasma to a certain ultra-high speed through the magnetic field, and then ejects from the nozzle to bring thrust.

However, because all satellites and spacecraft can provide limited power at present, the thrust that consumes power to provide magnetic field to generate thrust is naturally extremely limited.

At present, it is only useful in space, and it is basically used for steering in space. Only some detectors released outside the solar system will use such things to operate the main thrust, because it has a long enough time to keep it running. At the end, its speed can also reach a very high speed.

However, there is another kind of ion thruster, the arc heating type, which actually forms a high-temperature arc between the two electrodes to heat the gas. After entering the compression section of the anode nozzle, the gas is heated by the arc to a high temperature of more than 10000K, that is, ionization occurs at a high temperature of more than 5000 ℃.

Then the gas enters the anode nozzle, expands for a short time, accelerates to above supersonic speed, and finally ejects at high speed to form thrust.

Arc heated ion thruster has great development prospects. Although its thrust power ratio is lower than that of electromagnetic type, it is not known how many times higher than that of chemical type.

In addition, it has the advantages of simple structure, low operating voltage and long service life.

When the question comes to this, everyone should understand that with controllable nuclear fusion, what is this arc heated ion thruster? This thing also needs to be heated by electric discharge, but don't forget that controlled nuclear fusion itself has extremely terrible high temperature! Just say how many degrees Celsius you want!

Its core temperature can reach 100 million degrees Celsius! If the temperature of controlled nuclear fusion is allowed to heat the air and accelerate the propulsion of ions while generating power through fusion reaction, it is simply the best of both worlds.

Otherwise, why is controlled nuclear fusion the most important invention of mankind.

Now, what Jiang Yanhai is doing is how to reasonably miniaturize controllable nuclear fusion.

If we turn it into a robot sized core like that in science fiction movies, it can function, then humans can't do it at present.

But if you enlarge it to a certain volume, such as an 225, you can actually do it.