Live broadcast of my blind date with Miss Dai, sister Zhou was arrested

"Don't tease me, okay, she has no meat, she is Princess Taiping!"

"No, that's an airport with two runways."

"It's clearly a certainty!"

"Yes, yes, it's too appropriate!"

"I'll fight with you, it's a one-on-one game!"

"Yes, today's water friends competition, there will be no end to death!"

"I agree!"

"Whoever loses will leave the professor forever!"

"Orcs will never be slaves, unless they have food and shelter!"

"…………"

A group of inconspicuous fans, plus Dai Xiaomei, an inconsequential anchor.

Everyone started to mess around crazily in the live broadcast room.

They make such a fuss.

On the Shark live broadcast platform, the Super Tube, which usually controls the sky, the ground, and the air, seems to be frightened and can't see it at all.

Even if some black fans of Dai Xiaomei complained, Chaoguan would choose to ignore them all.

What an international joke!

This one is under the cover of the Security Bureau, who dares to mess with her?

Wouldn't that be deliberately causing trouble for that Professor Ye?

Crazy!

PS: Seeking automatic subscription, asking for rewards, asking for evaluation tickets!Ask for a monthly pass!three.

Chapter 159 State-of-the-art nuclear propulsion (9, please subscribe automatically!)

Dai Xiaomei misses Ye Tian very much.

But Ye Tian has no time to miss her this time.

Because he is busy.

Nuclear propulsion project is a huge project.

When Ye Tian worked in Shencheng, he knew a little about aerospace exploration.

And to Mingzhu.

Only then did he truly understand how difficult it is for human beings to explore and travel in space.

To know.

The first step in space travel is to launch a spacecraft into orbit using a rocket.

And when it escapes gravity, the rocket will consume a lot of fuel.

This mechanism will continue to play a dominant role in the foreseeable future.

And the really interesting part starts from the moment the spacecraft enters outer space.

If you want to go deeper into the universe, the spacecraft needs to accelerate again to completely get rid of the gravity of the earth's "[-]".

This is where nuclear powered propulsion comes in.

If the astronaut's goal is farther than the moon or even Mars, the spacecraft needs to reach an incredible speed.

The universe is "barren", and the distance between any objects is far away.

At this time,

Faster rockets mean safety and efficiency.

During the journey to Mars, astronauts will be exposed to high-energy cosmic rays, which can cause diseases such as cancer.

Although the spacecraft can shield most of the radiation, the protection measures required for long journeys will become a heavy burden.

Therefore, the easiest and most effective way is to complete this journey quickly.

Not only safety, but efficiency is also very important in the process of exploring the universe.

Even unmanned probes launched by major space agencies take a long time to reach their destinations.

For example, Voyager 12 took [-] years to reach Neptune.

If these probes were equipped with more powerful thrusters, astronomers could receive data and start corresponding research years in advance.

and so.

Ye Tian's nuclear propulsion test will get all the attention.

Because everyone knows it.

If he can succeed, it will make our country's space exploration a leading position in the world.

After searching a lot of information.

Ye Tian found out.

After getting rid of the gravity of the earth, the quality of the propulsion system will be judged from three aspects:

The first is thrust, that is, how much the propulsion system can accelerate the spacecraft.

The second is mass efficiency, which is the thrust that can be produced per unit mass of fuel.

At last,

It is the energy density, that is, the energy that can be produced per unit of fuel.

Today's propulsion systems are mostly driven by electrical energy provided by chemical fuels and solar energy.

Although chemical fuels can provide greater thrust, chemical rockets themselves are not efficient, and the energy density of chemical fuels is not high.

Take the Saturn V rocket, for example.

According to the information obtained by Ye Tian, ​​it carried a full 95 gallons of fuel and could generate a thrust of 500 million cattle.but,

A significant portion of that energy is just to get the fuel itself to orbit.

Electric propulsion is the use of electrical energy provided by the sun.

The most common method is to use an electric field to accelerate the ions, and then use the reaction force of the expelled ions to drive a rocket, such as a Hall thruster.

Mostly used to power satellites, this thruster is five times more mass-efficient than conventional chemical rockets.

However, the power they can provide is only three cattle.

The propulsion takes a car from rest to [-] mph in two and a half hours under ideal conditions.

Moreover, in the process of the spacecraft moving away from the sun, the energy it can provide will drop sharply.

Compared with these two schemes, the energy density of the nuclear-powered spaceship?'.1;,'8?3,2?.[-] has a qualitative leap.

Uranium fuel in nuclear reactors is 400 million times more efficient than hydrazine, which is commonly used in chemical rockets.

The rocket can carry very little uranium fuel to achieve the same effect as millions of liters of chemical fuel.

Very cool!

This was Ye Tian's first reaction after reading the information he found about nuclear propulsion.

Through Jiang Haichao's concern.

Ye Tian also got the current state of the world's mainstream research on nuclear powered space travel.

There are roughly two directions for this research.

The first is thermonuclear propulsion.

This system is powerful and has decent efficiency.

It works by using a small nuclear fission reactor to heat a gas, such as hydrogen, and using the reaction force of the gas ejected from the nozzle as it rapidly expands to propel the rocket... 0

This is similar to the nuclear reactors used in nuclear submarines.

It is also the reason why the higher-ups were very interested in Ye Tian's plan after learning about it.

According to the estimates of the Americans.

Using this method, the time for humans to travel to Mars can be shortened by 20.00% to 25%.

That's the same.

If it is used on a submarine, it can also increase the speed of the submarine so much.

After all, the efficiency of thermonuclear propulsion is twice that of traditional chemical rockets, that is, the same mass of fuel can produce twice the thrust.And the thrust is as high as [-] cattle.

Apply these forces to a stationary car, and the car will reach sixty miles per hour in a quarter of a second.

Another way is nuclear electric propulsion.

of course,

So far,

There is not yet a successful nuclear electric propulsion system in the world.

The principle is to use a high-energy fission reactor to generate electricity, and then use the electricity to drive an electric system similar to a Hall thruster.Such a system would be three times more efficient than a thermonuclear propulsion system.

And because the reactor is able to generate a lot of electricity,

A single reactor can simultaneously power several electric thrusters.

and this.

It is the working method of nuclear propulsion in Ye Tian's mind.

........................

"Ye Gong, you have read the materials for three days."

On 5.6, Xu Lin saw that Ye Tian was still looking at the materials, and asked cautiously, "When will the design start to be drawn?"

The whole project was led by Ye Tian.

Although he took a lot of data and sketches before.

But that's all fur,

The core part of the nuclear propulsion is not involved.

So everyone is actually waiting.

Wait for Ye Tian to come up with a complete design drawing.

But it has already been three days, and Ye Tian is still reading the materials, everyone is really anxious.

"Haha, it's okay."

Ye Tian laughed and said to everyone: "Don't worry everyone."

he knows,

I can finally start myself.

PS: There is a lot of theoretical knowledge in this chapter, but they are all dry goods.

1 Sixty chapters nuclear power experts! (1, ask for automatic subscription)

"here we go?"

Everyone was a little surprised when they heard Ye Tian's words.

"The direction we want to research is the nuclear electric propulsion system."

Ye Tian looked at everyone, and said slowly: "My design, if there are no accidents, our detector will successfully surpass other countries in the world and become the fastest detector!"

Everyone looked at each other.

Although the principle of nuclear electric propulsion system sounds simple.