My Super Black Technology Empire

The performance of polyimide can be said to be very good. It can work very well in the range of minus 200-300 degrees, and has excellent mechanical properties. one of the molecular materials.

At the same time, polyimide has a very good property, that is, it is very light.

According to Newton's second law, it can be known that under the action of the same magnitude of force, the lighter the mass of the object, the greater the acceleration, and the easier it is to be accelerated.

Especially when everyone hopes that the spacecraft can reach close to the speed of light, the possibility of mass increase due to relativistic effects must also be considered.

So even if the mass of the solar sail is reduced a little, the benefits we can get are very huge, which is why the researchers make the solar sail so thin.

In Ye Fan's black technology system, although there are a lot of cosmic engine technologies, whether it is a curvature engine or an engine that travels faster than the speed of light, it is not possible to play with the existing scientific and technological level of human beings.

Therefore, the non-working substance engine of the solar sail is currently an important means for humans to fly out of the solar system and even for long-distance interstellar voyages.

The sunlight is constantly radiating outward, so it is indeed difficult to get close to Mercury, and Ye Fan's initial plan is to install a solar sail on the mining spacecraft, so that it can reach a very high speed, and let the mining spacecraft fly directly to Jupiter. .

Then, using Jupiter's gravity, that is, the "gravitational slingshot", the mining spacecraft was thrown directly to the position of Mercury.

Planets are not stationary, they carry huge angular momentum in their rotation and revolution. In the overall angular momentum of the solar system, the angular momentum of the sun itself only accounts for 2%, and the other 98% of the angular momentum is controlled by the surrounding. Sun in astral hands.

When the mining spacecraft cuts into the planet's orbit, it also gets a part of the planet's angular momentum, and the transferred angular momentum is reflected in the speed change when the spacecraft flies out of the planet's gravitational field.

Taking the sun as a reference, the speed at which the spacecraft flew out of the planet at this time not only changed its direction, but also increased its size.

Because according to the law of conservation of energy, the kinetic energy added by the spacecraft is also the kinetic energy reduced by the planet, but the kinetic energy of the planet is too huge, and the kinetic energy shared by the small spacecraft is only a drop in the bucket compared to it. What will affect the planet.

It's as if we use wind power to generate energy from the movement of the air without worrying that the wind will stop.

Therefore, gravitational slingshots and solar sails, whether it is sailing in the solar system or interstellar sailing after going out of the solar system, are feasible.

The electromagnetic propulsion engine, although it can be propelled in a vacuum, but the fatal disadvantage of this kind of engine is that the power consumption is very terrifying.

The power consumption of this thing in a vacuum is even more than fifty times greater than that of an ion engine.

Therefore, the electric propulsion engine requires a lot of electric power. However, if the electric propulsion engine needs to meet the electric power consumption, it is inevitable to make the battery larger. After the battery is larger, the volume of the spacecraft will also increase accordingly.

In this way, it will fall into the previous "paradox" again.

So this is also why Ye Fan engages in solar sails.

Unless Ye Fan can build a spaceship of the size that can accommodate a heavy nuclear fusion reactor, and when sailing, he will constantly dig ores from the surrounding asteroids to replenish energy, and then drive the electric propulsion engine to sail in the interstellar space.

However, before the formal integration of global resources, building such a large spaceship is tantamount to nonsense.

The polyimide that makes up the solar sail is already very light, but the technology of system exchange shows that polyimide is not the best choice.

"Look, this is what makes our solar sail different from foreign solar sails. We have discovered a new material, also known as a solar sail weapon."

"Graphene."

Ye Fan's words fell,

There was an uproar in the audience.

It is not unusual to know that graphene is not uncommon, but most people associate it with batteries. After all, graphene can indeed increase the capacity of batteries.

However, if graphene is simply used to increase power storage, it would be too wasteful.

"This is our latest graphene. Its microstructure is that carbon atoms are connected to each other in a hexagonal shape, so its performance will be very amazing."

Later, Ye Fan sent another research document to the holographic projection.

Su Ying also nodded at this time. Although she is not a materials scientist, she is not unfamiliar with graphene.

"This material is indeed possible. After all, even if we have the corresponding technology, all materials can be compressed to the atomic level, but their strength cannot be guaranteed.

But in the case of graphene, it seems that there is no such concern. Its microstructure makes it still very strong on the atomic scale.

When we designed the spacecraft, we also investigated the information about graphene, so I also know some things about graphene. "Su Ying said.

"Well, regarding this graphene, a foreign research team created a tiny light sail with a diameter of only three millimeters but a mass of less than a quarter of a gram.

They then placed the sail in microgravity and irradiated it with lasers ranging from 0.1 watt to 1 watt to test its performance. "

Then Ye Fan uploaded a picture showing the latest graphene miniature light sail created by SCALE Nanotechnology.

The final experimental results show that the performance of this light sail is very good and achieves the expected effect.

"Of course, they are limited by the level of technology, and they can only do this at present, and it is difficult for them to make great breakthroughs in a short period of time, but we Datang Technology,

However, it is possible to produce an atomic-thick solar sail, which is much more advanced than foreigners. Limited by production and practical application issues, graphene solar sails with a diameter of more than one kilometer are still impossible.

However, we are working on a solar sail with a diameter of 300 meters and a width of 200 meters. Its mass is not even one kilogram, but it is limited by the area, so even if it is folded, it will take up a lot of space. "

Ye Fan projected another graphene solar sail on the table. The elites present were amazed at Datang Technology's strong scientific research capabilities and strong industrial capabilities.

Not only did the lithography machine come out, but also the graphene at the atomic level. If the latter can be realized, then for interstellar navigation, human beings really have the ability to take the first step.