Ten thousand I am across the heavens

Chapter 661 Accelerating orbit around the stars

Lan Nuo's choice to participate in the scouting team is a boost to the morale of the entire human race.However, there is still a long time for the reconnaissance team and the Trisolarans to actually contact each other. It will take nearly 50 years of voyage before they can catch up with the Trisolarans' fleet.

Considering that the acceleration process of the spacecraft modified by the accelerator is not so fast, even if the spacecraft can be accelerated to 50% of the speed of light, it will take a long time, and it may not be possible to reach it in [-] years.

Therefore, human beings still need to carry out their own construction before obtaining information feedback. In fact, it takes a long time for the spacecraft to fly out of the solar system.

The first batch of human space colonization spacecraft has not yet arrived at Jupiter, and the scout spacecraft has already set off. For human interstellar spacecraft, this is seriously premature.

If the ecological cycle system is not stable enough, even if it is lost in space, it can maintain operation for a long time. I am afraid that humans will not launch the first fleet at all.

The second and third fleets to be launched next will be launched one and a half years later, respectively. At that time, human spacecraft manufacturing technology will be much more mature, and they will be launched exclusively at the corresponding starports.

Drawing on the experience of the Earth's orbital accelerator, humans are preparing to establish an accelerated orbit in space, which is somewhat similar to the ladder plan.

The ladder plan in the original book is an attempt to use the lightest aircraft to send a human brain to the trisolaran fleet before the breakthrough of human technology.

The plan was carried out through nuclear explosions one after another. At that time, human beings had not yet separated from the working medium, the technology to accelerate the spacecraft, and there was no controllable nuclear fusion to provide huge energy.

Accelerating a man-made spacecraft to one percent of the speed of light was a luxury for human beings at that time.

Therefore, a very extreme method was adopted in the process of launching the spacecraft, that is, on the orbit of the spacecraft.Place nuclear bombs one after another, and detonate the aircraft after passing these nuclear bombs.

There is a huge sail on the aircraft, which is made of nanomaterials.After unfolding, it is somewhat like a parachute, pulling the spacecraft with the brain through the slender cable. The energy of the nuclear explosion will impact on the huge sail, which will be transformed into a strong driving force again and again. After multiple explosions in succession, theoretically It is possible to accelerate a spacecraft to one percent of the speed of light.

The space acceleration track that humans are going to build now is actually somewhat similar to this principle. To be precise, it is actually a huge electromagnetic gun, but it is built in space and used to accelerate the spacecraft.

Just like the high-energy particle colliders in space, their structure is also very simple. They are rings built in space one by one, which can propel the spacecraft through electromagnetic force. The rings are not connected to each other. , just accelerate the spacecraft in this way.

There is a considerable counterweight on each ring to ensure that the reaction force generated by pushing the spacecraft in space will not cause too much displacement to the ring.

After a launch, the thrusters on the ring will re-calibrate their position to complete the return of the ring position.

After completing these, the second round of launch can be carried out, because the ring itself is powered, and can adjust its position in space, change the orbit, and launch the spacecraft in any direction.

In the past, the acceleration of the spaceship relied more on the gravitational slingshot, but in the real interstellar war, these spaceships that must rely on the planet to accelerate are obviously too backward.

Compared with planets, electromagnetic coils that can be built in large numbers in the solar system and move freely are obviously more suitable as platforms for accelerating spacecraft.

The speed that each coil can increase is not much, but under the relay acceleration of one coil after another, the propulsion efficiency is much higher than the propulsion efficiency of the launch ship itself.

Some of these huge electromagnetic coils are distributed in the orbit of Jupiter. In the high orbit of Jupiter, a huge circular accelerator is built. The accelerator can accelerate the spacecraft and high-energy particles. When accelerating the spacecraft, the spacecraft will circle Jupiter Flying at high speed in a high orbit, it can accelerate multiple times continuously, maximizing the utilization efficiency of the electromagnetic coil, and each electromagnetic coil can provide acceleration multiple times.

But such accelerators have a flaw.That is, his acceleration has an upper limit.

The reason is very simple, high-speed circular motion needs to bear a lot of centripetal force.This is how the simulated gravity of the eco-tumbler comes about.

This calculation shows that even if the accelerator is built in a synchronous orbit, once the acceleration reaches about [-] times the angular velocity of Jupiter's rotation, it is equivalent to bearing the gravity of Jupiter's synchronous orbit. The gravity will be greater.And with the current human technology, there is far no way to counteract this gravity.

In this case, the upper limit of acceleration is actually very low. Although it is higher than the upper limit of acceleration with a gravitational slingshot, this speed is almost meaningless if you want to realize interstellar navigation.

That's why there are accelerators that exist out of the orbit of the planet. They are no longer arranged in a ring, but will be arranged in a straight line as much as possible. On this line, there will be no problem of centripetal force, and only one time is required. Accelerating the spaceship once can increase the speed of the spaceship almost without limit.

But at the same time, this also means that each acceleration ring can be used at most once, and the efficiency of acceleration is much lower.

Therefore, usually when humans need to accelerate the spacecraft, they will use two methods at the same time.Between the orbit of Jupiter and the orbit of Saturn, an acceleration channel is built with an acceleration ring.At the same time, on the synchronous orbit of Jupiter, a circular acceleration orbit is established.

The spacecraft will first accelerate to the limit that the astronauts can bear, and then leave the circular acceleration orbit and enter the linear acceleration orbit. The electromagnetic coils here are larger in size and stronger in power, and they are of the type with extremely strong instantaneous power.

Every time the spaceship passes through an electromagnetic coil, the coil will instantly consume a large amount of energy to accelerate the spaceship strongly. After hundreds of acceleration rings, even a spaceship without any power of its own can easily exceed the speed of the third universe. out of the solar system.

……

"This is the rudiment of the engineering project that I will be in charge of next." Lan Nuo 03381 explained that he is the successor of the Wallfacer. Out of respect for Lan Nuo, his "will" has been well executed.

His first clone inherited his original position and some rights, and it turned out that it was just as he said before he left.The clone has almost the same abilities as the main body.After inheriting the position, he did not disappoint anyone, successfully led the human race, and continued the technological explosion.

"Can you describe the content of the project in detail, the spacecraft highway between the orbits of Jupiter and Saturn is still in the process of construction, our colony spacecraft has just arrived at Jupiter, and many of the acceleration rings are transformed from the spacecraft on the spot If we want to continue building in deep space, it may be difficult to do it with our current space resources." Joshua has already begun to have some headaches about the huge resource consumption of the solar system defense construction.

"This is a long-term plan, and there is no need to rush. Jupiter's orbital accelerator actually gave us a good inspiration. The circular orbital accelerator is still more affordable than the linear accelerator. Each acceleration ring can provide the spacecraft with more space. Acceleration times, which allows us to build fewer acceleration rings to achieve a higher speed acceleration effect.

And this kind of acceleration orbit, why must it be arranged along the planets?
No one has considered, can this kind of accelerated orbit be arranged with the star as the center?
The circular acceleration orbit on Jupiter has given us a hint that in such an orbit, the acceleration speed has an upper limit, and the faster the orbiting speed, the greater the acceleration that needs to be endured.

Therefore, the larger the circle we draw, the higher the upper limit of acceleration. Correspondingly, we can use more energy to accelerate the spacecraft instead of correcting its flight trajectory to maintain the flight trajectory as a circle.

However, the acceleration orbit with the sun as the center of the circle has a much larger orbit radius than the orbit with the planet as the core, which is hardly an order of magnitude. Acceleration on such an orbit has a higher upper limit than our current If the upper limit is high, interstellar travel can be directly realized even after the acceleration is completed.

I think such an accelerated orbit is necessary. Considering that our productivity is relatively limited at present, we can first build an accelerated orbit in the inner circle of the earth's orbit. We only need to build a space station at the Lagrangian point of the earth, and then After completing the construction of the acceleration ring in the space station, and then launching it with very little power, it can run in the inner orbit of the earth. Because its angular velocity is faster than that of the earth, it can naturally surpass the earth a little bit.

In this way, as long as we ensure that each of our acceleration rings is produced and released at the same time interval, the distance between each acceleration ring is almost equal, and we don’t even need to spend a lot of resources to adjust their positions in space.

This is so far the cheapest way to build a circumstellar acceleration orbit. In the future, after building a small space station relying on these acceleration rings, we can also rely on this space highway to build a circumstellar accelerator. At present, we have not yet raced. Trisolarans have been defeated in China, but after winning the victory, there is no doubt that such an accelerator is necessary. "

After a certain degree of demonstration, the Planetary Defense Council found that this is indeed a quite feasible plan, and the difficulty of implementation is even lower than that of establishing an accelerated orbit between Jupiter and Saturn.

After all, it is closer to the earth, the real industrial base of mankind. Whether it is producing the acceleration ring or transporting the acceleration ring to the corresponding orbit, the difficulty is much lower.

Especially after a large number of space elevators have been built one after another, it has become easier and easier to transport materials from the ground to space, and there is even no need to deliberately launch the acceleration ring to the corresponding position, just wait for the earth's revolution to reach the corresponding position. Position, and then release the acceleration ring, the engineering difficulty can be said to be very low.

Once completed, the acceleration limit will be unbelievably high, and if it can be transformed into a circum-sun orbital accelerator, the cost of accelerating high-energy particles will also be reduced to the price of cabbage.

It's been mentioned before.The smaller the radius of the circular orbit, the more energy needs to be spent in the acceleration process to constrain the orbit of the accelerated objects and let them run in the circular orbit.

If it is said that accelerating the spacecraft requires only a small part of the energy used to correct the orbit, then most of the energy used to accelerate high-energy particles is used to maintain the constraint on the circular orbit.

Otherwise, just accelerating a few microscopic particles to close to the speed of light, no matter how much energy is consumed, it will not cause a power outage in the entire city before the advent of controllable nuclear fusion technology.Most of the energy in this is consumed in the orbits that constrain high-energy particles.

And when the circular orbit gets bigger and bigger, the energy that needs to be consumed on the constrained orbit will be less. If it is a circum-sun orbital accelerator, this part of the energy can even be ignored, and the cost of high-energy particle collisions will also drop. To the price of cabbage.

Compared with the linear acceleration trajectory planned and tried before, this new acceleration method is obviously more efficient and more practical.

"After we have the first successful construction experience, we can try to build more similar circular orbits one after another. The higher the orbital area, the higher the upper limit of acceleration, and the cost of the constrained orbit that needs to be consumed is also lower. smaller.

In theory, we can also adjust the orbit of the acceleration ring by continuously accelerating the spacecraft. " Lan Nuo gave a reverse acceleration plan on the holographic projection, that is, the spacecraft flies along the opposite direction of the orbit of the acceleration ring. The reaction force provided by each acceleration will increase the linear speed of the acceleration ring, which will bring The orbit of the accelerator rises slowly, which also realizes the fine adjustment of the orbit height by accelerating the spacecraft in reverse.

The level of detail in the plan is very high, which makes everyone in the Planetary Defense Council feel a little confused. There are too many technical details in it. It seems that Lan Nuo has developed a similar project and has dealt with various The problem, accumulated a lot of experience in general.

However, this is obviously impossible.He is just a clone, everything from birth to the present is seen, even if it is his body, it is impossible to have such an opportunity.

They naturally don't know that this is the experience that Lan Nuo has summed up in the world that covers the sky. Many planets in the world that cover the sky are as big as stars, or even bigger than stars, and they build satellites in their planetary orbits. system.The technology required is basically the same as establishing a circular acceleration orbit in the orbit of the sun. Lannuo and others have accumulated a lot of experience when they first built the satellite system on Ziwei Star. When building satellite systems for other giant life planets one after another , This experience has also become more and more abundant, and it is not too easy to handle the space highway in the orbit of the solar system.

[To be continued]

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