Originally, Cao Chuan's plan was that after the construction of this prototype was completed, it would be destroyed and sink into Jupiter, and the prototype was not mature enough in the end, but at the insistence of the employees of the research department, they still kept the prototype, 25 million kilowatt hours of free electricity, how many things could they do, and why waste it.

Next, Cao Chuan is considering the plan to further reduce the prototype and the matter of the deuterium-tritium reactor for the spacecraft. What a behemoth with a length, width and height of 500 meters, it's okay to put it in a vacuum, at least there is no gravity, and if you put it on Europa, the moon feels a little risky no matter how you look at it.

So after several new rounds of discussion and exploration... In fact, it has been completed before, but if it jumps to the mature version at the time of implementation, it will undoubtedly make many valuable lessons that should have been learned by the research department disappear, and the cost of the prototype is 1 million merits, so they are still building the reactor prototype step by step.

Three months later, the space station had expanded to 200,000 square meters. The extra huge astronomical telescope is on the same level as the TMT-class telescope built by the Lighthouse Nation a few years ago; There is an industrial area with a number of factories, which is responsible for extracting liquid hydrogen helium brought back by the spacecraft for collection, of which helium 3, deuterium and tritium will be used as fuel for fusion energy, accounting for the vast majority of ordinary hydrogen and helium, which also has industrial value, and is transported to Ganymede through the airport, with the help of spacecraft, and even sent to the asteroid belt, and even to the moon itself; There are two more huge spherical space stations marked with "Prototype 2" and "Prototype 3".

The size of the prototype three has been compressed to 150 meters in length, width and height, and the power generation capacity has remained unchanged at 25 million kilowatt hours.

Although the size of the reactor is still unusually large, it makes people wonder how they are going to put it on the ship, and whether it is necessary to build a spacecraft with a length of 300 meters to solve the problem.

In the face of the pressure of fully rolling out the new deuterium-tritium fusion power station, the research department and the city of Paradise gave priority to the construction of the first deuterium-tritium fusion power station on the ground 150 kilometers away from the city on the surface of Ganymede to solve the power supply problem.

What is the concept of 25 million kWh of electricity generation? According to the latest statistics as of 2030, the most prosperous magic city in the Night Rabbit Country, the power generation is only 20 million kilowatt hours, you can imagine what a terrifying number, if it supplies daily life, and even industrial production, how abundant it is, and in the Jupiter space station, there are 3 other prototypes that are also 25 million kilowatt hours of power generation, if there is a way to use it, there will be more.

Cao Chuan traveled back and forth between the Jupiter space station and the city of Heaven outside the world from time to time, although his main job during this time was to provide guidance to the research department, and it was absolutely impossible to ignore Jupiter's exploration in Jupiter.

"Hmm... It seems that the energy problem is more or less solved, and we have a way to make full use of Jupiter's big balloon to provide us with a steady stream of energy... So, it's time to look at the two technologies promised later. ”

The second technology that was promised was called fast fusion, which is essentially deuterium-tritium fusion energy, but it requires a faster energy output efficiency, which is different from reactors because fast fusion involves something extremely important to them - second-generation spacecraft.

So far, the most they have used is to travel through the hinterland of the solar system, and once they reach the 10 to 50 astronomical units of the solar system's frontier, the interstellar travel time will be as long as the moon.

Moreover, the above discussion is still the solar system, if you look a little farther away, to the boundary line of the solar system, the Oort cloud, the distance suddenly increases to 50,000 astronomical units, at this time, the spacecraft must have at least 10,000 km/s speed, can barely be regarded as free, and even to the distant star Proxima Centauri, 4 light-years away, it takes about 120 years, it is possible.

"Therefore, 10,000 km/s is a critical point, if we can't cross it, the development of human beings will be limited to the interior of the solar system..."Cao Chuan said to himself, this is what he has been worried about, just because the span is really long, from the limit speed of the Queen Nana 1000 km/s, jumping to 10,000 km/s, there must be countless technical barriers, including from materials, navigation theory, human conditions, unknown cosmic rules...

But the technical solution to fast fusion, which affects the extreme speed of second-generation spacecraft, was also solved in 50 days through regular simulations before he set off for Jupiter.

Jupiter space station, a spacecraft model composed of a simple spacecraft shell, control devices, and deuterium-tritium fusion energy reactor took off, the length of the spacecraft model is 250 meters, of which the fast fusion reactor occupies 1/3 of the volume, this number makes Cao Chuan's face not very good, I feel that we have to consider the problem of fusion energy reactor miniaturization, even if the length, width and height are reduced by half, it can be easily stuffed into the Hengyue-class spacecraft, and then reduced by half, or even accommodated in a medium-sized spacecraft with a length of 50-100 meters.

"In short, this sacred mission is entrusted to the research department...", he reminded the researchers present, so that these employees had to accept that as for whether this problem will be solved in 5 years, 10 years, or even 50 years, it depends on the progress of research later.

"Let's test it first..."Cao Chuan pulled the topic back.

The researchers adjusted the parameters to give the spacecraft model an acceleration of 100 m/s, and after three hours of acceleration, the speed of the spacecraft model reached the limit of 1,000 km/s for the Queen Nana.

However, because there was no one in the model, and because the spaceship model used stronger materials and more output, the exciting part of the test was just beginning.

"Switch to 1 km/s acceleration, verify hull changes, and the status of unmanned units in the spacecraft..."

Cao Chuan gave the order, full of hope, if their experiment was successful, it would mean that they were not far from jumping out of the blockade of the solar system.

"The hull is still stable, but it has been battered by a stream of rarefied material, showing a faster rate of wear...", a researcher's voice trembling, apparently too agitated to speak at the moment.

"The fixed unmanned unit has symptoms of various logical judgment delays due to excessive acceleration..."

……