Great Power Technology: Domination Of The World Starts With Chips

"Introduce yourselves," Ye Cheng said.

Hua Dongji said: "Boss, I mainly research engines, including aero engines, automobile engines, electric propulsion engines, etc."

"Electric drive?" Ye Cheng frowned.

"Well." Hua Dongji said: "Electric propulsion engines, including the most common Hall thrusters, can be mainly used on spacecraft."

Ye Cheng couldn't help being surprised.

The Hall thruster is already a science-fiction thruster.

Generally speaking, in many science fiction novels, it is liked to use it as the engine of the spacecraft to realize the operation in the universe.

It is mainly an electric propulsion system, which can be called an electric rocket engine. It uses the principle of the Hall effect and uses ions as a working medium to achieve propulsion, which requires the use of a magnetic field to accelerate.

The Huaguo space station uses Hall thrusters.

The Huaguo space station is equipped with four Hall thrusters, each of which can bring a thrust of 80 millinewtons, and the four Hall thrusters have a thrust of 0.32 Newtons.

Someone may ask, what can such a small thrust do?

What is the concept of 0.32N? Let’s do the math. On the earth, 0.32N is almost equivalent to the gravity of a 32-gram object.

An egg has 50 grams.

But to be clear, acceleration is equal to force in the same direction divided by mass, and velocity is equal to acceleration multiplied by time.

No matter how small the acceleration is, even if it is an acceleration of 0.01mm/s?, if the acceleration lasts for one or two days, it is equivalent to accelerating the speed to 864mm/s to 1728mm/s.

As for the space station, it is originally a long-term operation in the universe, and there is no problem at all in accelerating for such a long time.

Compared with chemical thrusters, Hall thrusters have another biggest advantage, that is, higher specific impulse.

Specific impulse refers to the impulse brought by a unit of propellant.

Hall thrusters generally have a specific impulse ten times higher than chemical thrusters.

In a simple way to understand, this is equivalent to, for two identical rockets, including the same mass of the propellant, when they consume all the propellant, the rocket using the Hall thruster, get The total thrust will be ten times that of chemical thrusters.

In addition, there is another advantage, that is, the service life of the Hall thruster is also higher than that of the chemical thruster, which will help realize the reuse of the rocket.

Of course, having said so much, there is still one thing that cannot be avoided, that is, the thrust of the currently researched Hall thruster is too small.

It is impossible to use it to propel the rocket launch, because its thrust cannot even overcome the gravity of the rocket.

Its thrust is limited by its theory and structure. If you want to amplify its thrust, you must either strengthen the internal electromagnetic field, or make it bigger, but if you make it bigger, its own weight must be considered. Considering its thrust size, so there is no need to make it bigger.

Therefore, if you want to launch a rocket with a Hall thruster on the surface of the earth, you may not be able to do it until thousands of years later.

Unless some new theory is born, it can continue to greatly increase the impulse generated by the ejected working fluid per second, perhaps ten thousand times that of the Hall thruster, before it can be electrically pushed from the ground to the sky above the universe.

From this perspective, it seems more reasonable to build a space elevator first than launch a rocket with electric propulsion.

Of course, this is not to say that the Hall thruster is useless. Another way of thinking is to use chemical thrusters to let the rocket go to the sky. more effective.

Ye Cheng thought for a while and said, "How much can you increase the thrust of the Hall thruster? With room temperature superconductors and lithium-air batteries."

Hua Dongji was taken aback: "A room temperature superconductor?"

"Yes." Ye Cheng nodded.

These system characters generally have the same understanding as the general public in this world except for the knowledge they themselves know.

So before Ye Cheng has decided to announce that room temperature superconductors have appeared in the world, he can know what will happen in the world.

Hua Dongji seemed a little surprised for a while, but as a system character, his ability to accept is relatively strong, and soon he said: "If I use room temperature superconductors, and consider the volume and mass conditions, I can make the Hall thruster The thrust of the engine can be increased to more than 20N, if it can be made bigger, it will be no problem to increase it further.”

"20N?" Ye Cheng couldn't help being surprised.

Although, on the earth, 20N is only equivalent to the weight of an object with a mass of 2 kilograms, but in the universe, this is a relatively objective force.

Think about it, the four HET-80 Hall electric thrusters currently used on the Huaguo space station add up to a thrust of 0.32N. As a result, Huadongji can directly increase it to more than 20N!

That means sixty times the thrust of those four HET-80 Hall electric thrusters!

And if you also get four of these Hall thrusters, that's two hundred and forty times.

The acceleration brought about is two hundred and forty times.

That would be an excellent propulsion.

The HET-80 Hall electric thruster is originally used to adjust the orbit. Now if the thrust of 20N can be achieved, it will be able to play a greater role in adjusting the orbit. Like the previous Huaguo satellite avoiding the American satellite, it can also be used. Use this thruster.

And if the number of thrusters continues to increase, the thrust can continue to increase, and it may be possible to use Hall thrusters to achieve the possibility of landing on the moon in the future.

"Okay, the Hall thruster thing, we can do it later when we have time. When Huaguo launches satellites, the 20N Hall thruster will definitely be favored." Ye Cheng said: "After that, you should study the aeroengine first. .”

"Good boss." Hua Dongji nodded.

At this time, Lao Dianbo on the side couldn't help asking: "Boss, you just said that there are already room temperature superconductors?"

"Yes." Ye Cheng said.

Lao Dianbo said excitedly: "In this way, we will be able to easily understand what information is transmitted by human brain waves!"

Ye Cheng's eyes lit up. It seems that this brain wave master is really engaged in this area, so he continued to ask: "Then what if the information is transmitted to the brain from the outside? How do we achieve it?"

"It's a complicated question, but I know the theory," Laudianbo said.

"There is a special part of the cerebral cortex. After stimulating this part of the cortex with a weak current, it can activate some special neuron cells in this part, so that it can receive electromagnetic waves at a specific frequency, thereby receiving external information. The difference in the amplitude of electromagnetic waves determines what kind of information is received.