This makes the force that increases the linear speed of the car perpendicular to the cable, which means that this force will be the pressure exerted on the cable.

As the car runs upwards, the cable keeps putting pressure parallel to the ground, increasing its linear speed.

The kinetic energy provided by the cable is obtained at the expense of the speed and altitude of the synchronous orbital station, which makes it difficult for the synchronous orbital station to remain stationary.

Therefore, the synchronous orbital station itself needs to carry fuel, or related propulsion devices, to constantly counteract this force, so as to maintain its altitude and not be dragged down.

Since fuel needs to be replenished at regular intervals and the huge amount of energy required to transport it, it is better to have the car itself carry the fuel to provide power.

Thanks to today's breakthrough in battery technology, a 300-kilogram battery can already meet the consumption of a space elevator with full power for a month.

Therefore, the consumption of related fuel and electricity is not very short, but in the future, if the scale of the space elevator is expanded, and the construction of the outer ring of the atmosphere that encompasses the entire earth, it is not something that can be solved by the electric energy of the battery.

The second method, similar to the conventional elevator, is to increase the load by lowering the weight at the other end or by another car.

This method does not require a car to provide tangential kinetic energy for itself, and directly descends from the car on the other side to provide kinetic energy for itself.

This principle is similar to that of an elevator, but this method strictly requires weight balancing for each lift, and the upper and lower cars should still carry jets to compensate for the loss of mechanical energy, taking into account various resistances.

"Actually, master, allow me to make a comment on this anti-heaven project of the space elevator." At this time, Ye Fan's smart glasses sounded the voice of origin.

The origin itself is an intelligent life, and from the moment it was designed and born by Ye Fan, it has been constantly absorbing external knowledge to grow.

However, limited by the computing power of a thousand quantum computers, the growth of the origin is not fast, but it is also very terrifying.

When Ye Fan asked Origin to evaluate the space elevator project, the conclusion of the big data deduction of the origin was that the space elevator project itself was - (minus) SSSS level.

In other words, the priority of this project can be ranked after any existing plan and project.

"Well, what do you want to say?" Ye Fan nodded and asked.

"The budget for the space elevator is three trillion yuan, and it is a conservative estimate, such a high price is definitely beyond the limit that our Datang Technology can afford, and this is still a meaningless project."

Speaking of this, the origin directly shows a report made by himself on the smart glasses.

[Questions about the feasibility and cost-effectiveness of space elevators]

Master, let's jump out and think about the problem from a different perspective: what more valuable space projects can we do with the funds used to build the space elevator?

The geosynchronous orbit is as high as 36,000 kilometers, which is more than 100 times the height of the International Space Station and three times the diameter of the Earth.

Assuming that the cable of carbon nanotubes is one meter and one ton, not counting the counterweight and construction equipment, the rope alone weighs 36 million tons.

This is equivalent to 3.6 million 100,000-ton aircraft carriers USS Ford, nearly half of the tonnage and weight of the floating cities of our "Nantianmen" program, and nearly 180 tonnage of 200,000-ton "Jade Emperor-class" space battleships.

Master, please close your eyes at this time and imagine that if you have a fleet of 180 "Jade Emperor-class" space battleships in space, this starfleet is arranged in a matrix of dots, and the huge hulls are separated by 300 meters, which can be arranged into a black and pressed 3 km x 3 km steel carpet.

Your fleet imperial commander is standing on the summit of the cosmic city of the "South Heavenly Gate" project in the space battleship array, and seeing the swarthy steel giant ships lit up around you, stretching out in all directions of the city to the depths of the universe, you will realize that you are no longer a fleet commander, but the head of an empire, and you have formed an interstellar civilization in space.

At this time, master, what are you going to command this interstellar civilization to do?

Obviously, as a head of state, the soul and leader of a human alliance, you will not use such a huge fleet to build a space elevator, but drive a detachment to mine on an asteroid, part to collect methane on Titan, and part to perihelion orbit to launch a reflective array to build a new space city.

In other words, these 180 super space fleets can form a self-sustaining, growing and reproducing industrial system, and they no longer need to keep in touch with the earth.

For example, after the discovery of the New World hundreds of years ago, the Spaniards thought they would have to move dozens of cities to the Americas to support their colonies.

But in reality, it only took a few thousand colonists to move to the Americas to make tools, build cities, and have children in the New World.

Two hundred years later, Amejian has grown into a giant hundreds of times more powerful than Spain, and there is little need for large-scale, continuous transportation support.

Like a new continent full of forests, the resources in space can be tens of thousands of times and hundreds of thousands of times more than those on Earth.

Earth's resources are very poor, just like the minerals related to upgrading the ion engine, which need to be collected from various planets in the solar system.

In space, the transportation of objects mainly relies on inertia, and gravitational slingshots can also be used to borrow force, which is much less labor-saving than transporting resources from the ground to space.

Smashing space, the density of sunlight energy is twice that of the earth, and the closer you get to the sun, the energy can be said to be endless.

In the asteroid belt, on the moons of Jupiter and Saturn, there is no shortage of mineral resources, let alone carbon and water resources.

The space elevator was not produced during the construction period, and if this cost was not shared by the country, it would not be possible to build it all at once with our capabilities.

With the industrial level of our Datang Heavy Industry, the amount spent to build a "Jade Emperor-class" space battleship is 10 billion, and the total cost of 180 warships is only 1.8 trillion yuan.