The inauguration ceremony of the Academy of Sciences ended.

Su Han called Su Xinghe over.

Secretly handed him a set of lists.

Let him secretly deal with a few people with backbones.

If you have enough time.

Su Han thought about secretly observing a few people.

Let's see what the problem is.

But the problem is that he himself cannot stay at the Mercury base for a long time.

I didn't have that time.

What kind of big data survey.

The best thing to do right now is to vaporize these people from the world.

So as not to create instability for the Mercury Academy of Sciences.

Of course, Su Xinghe was loyal to Su Han.

Although he didn't know why he wanted to clean up these people.

But no matter what the other party asks him to do.

He will also obey unconditionally.

However, this incident also sounded the alarm for Su Xinghe.

Usually and amiably the Academy of Sciences.

It's not as simple as you think.

At least this dean of his own arrangement has some secret power hidden in it.

He didn't know at all.

It seems that it is better to be careful when doing things on your own in the future.

So as not to even know how he died in the end.

……

Su Han lived at the Mercury base for a while.

It wasn't until the Jiaolong returned to the base after completing the tests.

He boarded the ship again and took a look.

In the end, I left satisfied.

The Dragon Academy of Sciences has also officially invested in research work.

……

Two years later.

The prototype of the new Brontosaurus B working fluid engine rolled off the production line.

Of course, Su Han was very happy about this.

Although there is a working fluid, the engine performance is very strong.

But there is a fatal flaw.

It's just that the fuel is running out too fast.

Su Han is currently building mining machines.

The annual production of helium-3 has reached 2,000 tons.

But in the state of working fluid, it is not enough for a Jiaolong.

The working engine was destined not to be an important reliance for him to cross the stars.

The working fluid engine will become one of the most important cards in Su Han's hands.

After the start of the test.

The thrust of the engine is constantly rising...... In the end, the ultimate thrust of 230 tons came.

Although this thrust is far inferior to that of a working engine.

But the problem is that the key is to be more fuel-efficient.

This is the meaning of the existence of work-free engines.

Su Han said: "That's right, Shenlong! How many Brontosaurus B WD engines can be installed on a Jiaolong? ”

Shenlong said: "The volume of the Brontosaurus type B motive is smaller than that of the A-type. A fusion unit can accommodate about 40 engines. The Jiaolong has two fusion devices, which can be matched with 100 Brontosaurus B engines. ”

Su Han said: "If our Jiaolong is equipped with a Brontosaurus B engine, how fast can it fly?" ”

Shenlong said: "The Brontosaurus B engine is to cut the magnetic inductance lines of stars and planets for flight. Now although the thrust of the engine has reached more than two hundred tons, the test site is on Mercury, and it is close to the sun, which itself can cut a strong magnetic field. The normal situation should be that the farther away from the star, the less thrust there is. Of course, the smallest cannot be without. Because even if there are no stars, there is still the magnetic field of the galaxy, but the thrust is not so great.

As for how fast the fastest can fly. Calculated, without taking into account the cost of time. It should be able to push the Jiaolong-class battleship to half the speed of light. ”

Half the speed of light!

Of course, Su Han was a little excited when he heard this.

Half the speed of light.

That's already an astonishing speed.

If your own spaceship can really have half the speed of light.

Then it is entirely possible to fly to the closest star system to the Sun within ten years.

Su Han, who was a little excited in his heart, suddenly thought of something again: "That's right, Shenlong!" How many tons of helium-3 would it take to accelerate to 50 percent of the speed of light? ”

Shenlong said: "It will take about two thousand seven hundred tons. ”

"So much!" Su Han also frowned when he heard this!

There are 10,000 tons of working fluid.

2,700 tons without working fluid.

It doesn't seem to have saved much.

However, considering that 10,000 tons is only 30% of the speed of light.

Two thousand seven hundred tons is fifty percent of the speed of light.

It's a lot faster.

It made him a little tangled.

In fact, even if it is 10,000 tons, Su Han's current mining capacity is not unacceptable.

But the problem now is that this is only a 500,000-ton Jiaolong-class battleship.

If you build a multi-million-ton mothership in the future.

Wouldn't it take 270,000 tons of helium-3 to push it to 50 percent of the speed of light?

270,000 tons of helium-3.

Where are you going to find so many helium-threes?

The point is that another 270,000 tons are needed for the deceleration.

Together, 540,000 tons of helium-3 are needed.

What an exaggeration!

Su Han thought of this: "That's right, Shenlong! How much fuel would it take to push a spacecraft to ten percent of the speed of light? ”

Shenlong said: "About ninety tons!" ”

Su Han was stunned when he heard this! said: "How can it be so bad? ”

Shenlong said: "The faster the speed, the greater the mass, and the greater the energy required." ”

Su Han thought for a moment.

Ten percent of the speed of light is undoubtedly the most cost-effective speed.

Although the mothership released to tens of millions of tons also needs nearly 10,000 tons of helium-3, it is still within its own tolerance range.

It's a big deal to mine helium-3 on the moon and Mercury.

I believe that there will be more than 100,000 tons of helium-three.

It's enough for your own fleet to accelerate and slow down once or twice.

Su Han suddenly thought of something and said, "That's right! Accelerate to ten percent of the speed of light. How long will it take? ”

Shenlong said: "It will take about ninety years!" ”

"How many years?" Su Han was shocked when he heard this! Did he think he had heard it wrong?

"Ninety years!" Shenlong repeated.

Su Han was a little dumbfounded when he heard this!

It takes 90 years to speed up!

That's an exaggeration, isn't it?

Su Han said: "Divine Dragon! Are you sure you're not kidding me? How does it take that long to accelerate? ”

Shenlong said: "The acceleration efficiency has a lot to do with the strength of the magnetic field of the star system. Acceleration can be a little faster at the beginning! But after a long time, the strength of the magnetic field decreases, and the thrust will also decrease, and the thrust will not be so strong in the later stage. ”

Su Han said: "What about accelerating to fifty percent of the speed of light?" How long does it take? ”

Shenlong said: "It will take about two thousand years!" ”

Two thousand years!

Su Han was speechless when he heard this.

It has only been 2,000 years since the first year of the public government.

Acceleration costs two thousand.

Isn't it still going to take 2,000 years to slow down?

Four thousand years have passed since acceleration and deceleration.

The Chinese civilization is only 5,000 years old.

Isn't all this time wasted on accelerating and decelerating?

Su Han was also a little speechless.

It seems that the problems of the universe are much more complex than I imagined.

The key is that do you really have that much time?

Fortunately, it only takes fifteen years to accelerate to one hundredth of the speed of light.

Seems to be a good option as well.

But the problem is that a region of hundredths of a light spanning a few light-years is acceptable.